Side by side

MDR 36 versus 50 versus 68

Which Mini Delta Ribbon position count and series does the exact component specify?

Computer-generated illustration, not a photograph. — P248 · Connector36-contact MDR / IEEE 1284C form

How they differ

36-contact MDR / IEEE 1284C form Distinguish the compact MDR shell from the larger CHAMP-36 outline and confirm the interface designation in the equipment documentation.
50-position Mini Delta Ribbon (MDR) connector Look for the compact MDR shell/latching arrangement and confirm the 50-position variant from the component or equipment documentation.
68-position Mini Delta Ribbon (MDR) connector Confirm the MDR series and 68-contact variant from markings or component documentation; do not identify it from contact count alone.

Then askWhich Mini Delta Ribbon position count and series does the exact component specify?

At a glance

Source-scoped form facts; counts, variants and unknowns are distinct
Field	36-contact MDR / IEEE 1284C form	50-position Mini Delta Ribbon (MDR) connector	68-position Mini Delta Ribbon (MDR) connector
Type	Connector	Connector	Connector
Family	Legacy computer	Legacy computer	Legacy computer
Shape	ribbon	ribbon	ribbon
Nominal contacts	36S268Source-backed nominal position/contact count: 36.	50S264Source-backed nominal position/contact count: 50.	68S265Source-backed nominal position/contact count: 68.
Positions / cavity span	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Contact rows	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Connector role	plug (10136-52X2 (normal right-angle ordering family))S904Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. Named series only, not every family part: 10136-52X2 (normal right-angle ordering family). Documented role: plug. Full PDF text read; direct403. Dimension table A-D remains an unmapped drawing axis and is not proposed. Normal and reverse D-interface variants must stay separate.	plug (10150-3000PE)S902Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. 10150-3000PE. Documented role: plug. New connector source corrects scope beyond existing10350-1230-00junction-shell source. No shell dimension adopted as connector dimension.	plug (10168-900AXX (ordering family))S265Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. Named series only, not every family part: 10168-900AXX (ordering family). Documented role: plug. No complete suffix chosen without order record. Linked TS-0698 PDF has no web text and direct403, so drawing dimensions and rows remain unverified.
Key distinction	Sharing a 36-contact count does not make MDR/1284C and CHAMP-36 the same connector.	The MDR family name and contact count identify a mechanical form only; cable signaling and equipment role remain implementation-specific.	A 68-contact MDR shell is not the same mechanical family as VHDCI merely because both can expose 68 contacts.

Full evidence ledger and sources ↓

Illustrations are computer-generated with prior AI visual review; independent technical and rights review pending. A comparison is not a compatibility verdict.

This comparison stays within one evidence layer.

All selected records are Connector records. Similar layer does not mean compatible, interchangeable or safe to mate.

Families represented: Legacy computer

The reference ledger

Read the same question across.

3 selected records · 13 fields
No score. No compatibility verdict.

On a narrow screen, scroll the table sideways or open the field-by-field reading view below. Illustrations are not a size comparison.

Comparison of selected field notes; source links accompany each documented specification
What you are comparing	P248 / Connector36-contact MDR / IEEE 1284C form Identification schematic · not to scale · drawing review pending	P244 / Connector50-position Mini Delta Ribbon (MDR) connector Identification schematic · not to scale · drawing review pending	P245 / Connector68-position Mini Delta Ribbon (MDR) connector Identification schematic · not to scale · drawing review pending
Layer	Connector	Connector	Connector
Key distinction	Sharing a 36-contact count does not make MDR/1284C and CHAMP-36 the same connector.	The MDR family name and contact count identify a mechanical form only; cable signaling and equipment role remain implementation-specific.	A 68-contact MDR shell is not the same mechanical family as VHDCI merely because both can expose 68 contacts.
Nominal contacts	36S268Source-backed nominal position/contact count: 36.	50S264Source-backed nominal position/contact count: 50.	68S265Source-backed nominal position/contact count: 68.
Positions / cavity span	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Populated contacts	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Contact rows	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Contact pitch	1.27 mm 0.050in series pitch (10136-52X2 (normal right-angle ordering family))S904Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. Named series only, not every family part: 10136-52X2 (normal right-angle ordering family). Documented role: plug. Full PDF text read; direct403. Dimension table A-D remains an unmapped drawing axis and is not proposed. Normal and reverse D-interface variants must stay separate.	1.27 mm published connector pitch (10150-3000PE)S902Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. 10150-3000PE. Documented role: plug. New connector source corrects scope beyond existing10350-1230-00junction-shell source. No shell dimension adopted as connector dimension.	1.27 mm 0.050in published series pitch (10168-900AXX (ordering family))S265Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. Named series only, not every family part: 10168-900AXX (ordering family). Documented role: plug. No complete suffix chosen without order record. Linked TS-0698 PDF has no web text and direct403, so drawing dimensions and rows remain unverified.
Dimensions / axis	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Connector role	plug (10136-52X2 (normal right-angle ordering family))S904Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. Named series only, not every family part: 10136-52X2 (normal right-angle ordering family). Documented role: plug. Full PDF text read; direct403. Dimension table A-D remains an unmapped drawing axis and is not proposed. Normal and reverse D-interface variants must stay separate.	plug (10150-3000PE)S902Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. 10150-3000PE. Documented role: plug. New connector source corrects scope beyond existing10350-1230-00junction-shell source. No shell dimension adopted as connector dimension.	plug (10168-900AXX (ordering family))S265Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. Named series only, not every family part: 10168-900AXX (ordering family). Documented role: plug. No complete suffix chosen without order record. Linked TS-0698 PDF has no web text and direct403, so drawing dimensions and rows remain unverified.
Coupling / latch	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Keying / polarization	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Documented identification	36-position/contact recognition fact in the cited implementation.C248A	50-position/contact recognition fact in the cited implementation.C244A	68-position/contact recognition fact in the cited implementation.C245A
Evidence	C248A → Independent review pending	C244A,C244B → Independent review pending	C245A,C245B → Independent review pending

Read field by field — no sideways scrolling

The same selected records, fields, values and source links as the table. Missing fields remain non-equivalent; no values are merged.

Layer

36-contact MDR / IEEE 1284C formP248 / Connector: Connector
50-position Mini Delta Ribbon (MDR) connectorP244 / Connector: Connector
68-position Mini Delta Ribbon (MDR) connectorP245 / Connector: Connector

Key distinction

36-contact MDR / IEEE 1284C formP248 / Connector: Sharing a 36-contact count does not make MDR/1284C and CHAMP-36 the same connector.
50-position Mini Delta Ribbon (MDR) connectorP244 / Connector: The MDR family name and contact count identify a mechanical form only; cable signaling and equipment role remain implementation-specific.
68-position Mini Delta Ribbon (MDR) connectorP245 / Connector: A 68-contact MDR shell is not the same mechanical family as VHDCI merely because both can expose 68 contacts.

Nominal contacts

36-contact MDR / IEEE 1284C formP248 / Connector: 36S268Source-backed nominal position/contact count: 36.
50-position Mini Delta Ribbon (MDR) connectorP244 / Connector: 50S264Source-backed nominal position/contact count: 50.
68-position Mini Delta Ribbon (MDR) connectorP245 / Connector: 68S265Source-backed nominal position/contact count: 68.

Positions / cavity span

36-contact MDR / IEEE 1284C formP248 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
50-position Mini Delta Ribbon (MDR) connectorP244 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
68-position Mini Delta Ribbon (MDR) connectorP245 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Populated contacts

36-contact MDR / IEEE 1284C formP248 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
50-position Mini Delta Ribbon (MDR) connectorP244 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
68-position Mini Delta Ribbon (MDR) connectorP245 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Contact rows

36-contact MDR / IEEE 1284C formP248 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
50-position Mini Delta Ribbon (MDR) connectorP244 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
68-position Mini Delta Ribbon (MDR) connectorP245 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Contact pitch

36-contact MDR / IEEE 1284C formP248 / Connector: 1.27 mm 0.050in series pitch (10136-52X2 (normal right-angle ordering family))S904Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. Named series only, not every family part: 10136-52X2 (normal right-angle ordering family). Documented role: plug. Full PDF text read; direct403. Dimension table A-D remains an unmapped drawing axis and is not proposed. Normal and reverse D-interface variants must stay separate.
50-position Mini Delta Ribbon (MDR) connectorP244 / Connector: 1.27 mm published connector pitch (10150-3000PE)S902Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. 10150-3000PE. Documented role: plug. New connector source corrects scope beyond existing10350-1230-00junction-shell source. No shell dimension adopted as connector dimension.
68-position Mini Delta Ribbon (MDR) connectorP245 / Connector: 1.27 mm 0.050in published series pitch (10168-900AXX (ordering family))S265Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. Named series only, not every family part: 10168-900AXX (ordering family). Documented role: plug. No complete suffix chosen without order record. Linked TS-0698 PDF has no web text and direct403, so drawing dimensions and rows remain unverified.

Dimensions / axis

36-contact MDR / IEEE 1284C formP248 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
50-position Mini Delta Ribbon (MDR) connectorP244 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
68-position Mini Delta Ribbon (MDR) connectorP245 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Connector role

36-contact MDR / IEEE 1284C formP248 / Connector: plug (10136-52X2 (normal right-angle ordering family))S904Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. Named series only, not every family part: 10136-52X2 (normal right-angle ordering family). Documented role: plug. Full PDF text read; direct403. Dimension table A-D remains an unmapped drawing axis and is not proposed. Normal and reverse D-interface variants must stay separate.
50-position Mini Delta Ribbon (MDR) connectorP244 / Connector: plug (10150-3000PE)S902Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. 10150-3000PE. Documented role: plug. New connector source corrects scope beyond existing10350-1230-00junction-shell source. No shell dimension adopted as connector dimension.
68-position Mini Delta Ribbon (MDR) connectorP245 / Connector: plug (10168-900AXX (ordering family))S265Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. Named series only, not every family part: 10168-900AXX (ordering family). Documented role: plug. No complete suffix chosen without order record. Linked TS-0698 PDF has no web text and direct403, so drawing dimensions and rows remain unverified.

Coupling / latch

36-contact MDR / IEEE 1284C formP248 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
50-position Mini Delta Ribbon (MDR) connectorP244 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
68-position Mini Delta Ribbon (MDR) connectorP245 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Keying / polarization

36-contact MDR / IEEE 1284C formP248 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
50-position Mini Delta Ribbon (MDR) connectorP244 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
68-position Mini Delta Ribbon (MDR) connectorP245 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Documented identification

36-contact MDR / IEEE 1284C formP248 / Connector: 36-position/contact recognition fact in the cited implementation.C248A
50-position Mini Delta Ribbon (MDR) connectorP244 / Connector: 50-position/contact recognition fact in the cited implementation.C244A
68-position Mini Delta Ribbon (MDR) connectorP245 / Connector: 68-position/contact recognition fact in the cited implementation.C245A

Evidence

36-contact MDR / IEEE 1284C formP248 / Connector: C248A →
Independent review pending
50-position Mini Delta Ribbon (MDR) connectorP244 / Connector: C244A,C244B →
Independent review pending
68-position Mini Delta Ribbon (MDR) connectorP245 / Connector: C245A,C245B →
Independent review pending

Your next step

Use the distinction in context.

Open the field notes Read source-linked facts and limitations.Compare another pair Start from a common confusion.Check a connection A comparison is not a compatibility verdict.

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68-position MDR versus 68-contact VHDCIIs the 68-contact legacy interface MDR or the narrower VHDCI family? Connector-family identity is only the first layer; implementation-specific electrical and protocol requirements still need exact documentation.34-, 40- and 50-position IDC ribbon headersWhich 2.54 mm two-row position count and keying does the exact header use? Connector-family identity is only the first layer; implementation-specific electrical and protocol requirements still need exact documentation.CHAMP 36 versus CHAMP 50Is the full-size CHAMP/Centronics-style connector the 36-position or 50-position form? Connector-family identity is only the first layer; implementation-specific electrical and protocol requirements still need exact documentation.DE-9 versus DB25Find the exact documented interface before choosing a cable.PS/2 form versus S-Video formCompare the contact pattern and keying, not only a circular shell.BNC vs TNC coaxial connectorsBNC uses bayonet coupling while TNC uses threaded coupling. Connector family, impedance and application still need to be verified independently.

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Evidence behind this page

Scope first. Source second. Approval separate.

4 linked sources · 5 scoped claims · 0 sources with inspection/access flags.

Page scope: Evidence behind the compared records; the editorial comparison still needs separate review.

Assessment 2026-10-22 · earliest scheduled source review 2027-01-04. This is a recorded-date assessment, not a live source check. Page-level independent review is not established by this panel.

Inspect 4 source scopes, access limits and dates

S264 · 50-position 3M Mini Delta Ribbon junction shell

3M · Manufacturer / product-owner domain · inspected 2026-10-06 · due 2027-01-04

Within inspection window

Scoped support: Identifies a 50-contact Mini Delta Ribbon (MDR) junction shell compatible with the 10150-series plug.

Not established / limitations: Identification/reference scope only. V43 does not convert this source into a universal pinout, fabrication drawing, electrical approval, protocol guarantee or end-to-end compatibility verdict.

Locator: Product highlights

S265 · 3M Mini Delta Ribbon 101XX-900AXX series

3M · Manufacturer / product-owner domain · inspected 2026-10-06 · due 2027-01-04

Within inspection window

Scoped support: Identifies Mini Delta Ribbon variants including 68 contacts; V43 uses the family/count fact only.

Locator: Product highlights

S268 · 3M Mini Delta Ribbon 101XX-X2X2XC series

3M · Manufacturer / product-owner domain · inspected 2026-10-06 · due 2027-01-04

Within inspection window

Scoped support: Identifies a 36-contact MDR implementation for IEEE 1284C; V43 uses only family, interface label and count.

Locator: Product highlights

S902 · 10150-3000PE MDR solder plug product specification

3M · Unclassified publisher domain · inspected 2026-10-22 · due 2027-01-20

Within inspection window

Scoped support: Current primary-document research for P244 / 10150-3000PE. Each normalized fact retains its exact part/family, role and document scope.

Not established / limitations: No independent technical review, hardware validation, specimen measurement or general interoperability approval. Exact scopes and unresolved fields remain controlling.

Locator: Exact product title; specifications; details

Trace 5 claims to their source records

C244A · P244

3M identifies its 10350-series Mini Delta Ribbon junction shell as a 50-contact MDR form.

Claim scope: V43 catalogue-expansion identification fact only; not independent technical approval, fabrication data, wiring instruction, protocol guarantee or end-to-end compatibility proof.

Source links: S264 · Evidence trail → (private workspace)

C244B · P244

Exact source example 10150-3000PE: contacts: 50. construction: Shielded wiremount solder-cup plug; wiper-on-wiper contacts. wire acceptance awg: 24-30 (acceptance only, not geometry). New connector source corrects scope beyond existing10350-1230-00junction-shell source. No shell dimension adopted as connector dimension. No physical compatibility, pin map or hardware validation is established.

Claim scope: Exact named component/family technical construction reference from the full current primary document; geometry, ratings and implementation limits do not transfer to other variants.

Source links: S902 · Evidence trail → (private workspace)

C245A · P245

3M lists 68 contacts among the offered configurations of its 101XX-900AXX Mini Delta Ribbon plug series.

Claim scope: V43 catalogue-expansion identification fact only; not independent technical approval, fabrication data, wiring instruction, protocol guarantee or end-to-end compatibility proof.

Source links: S265 · Evidence trail → (private workspace)

C245B · P245

Exact source example 10168-900AXX (ordering family): contacts: 68. construction: Shielded straddlemount solder-tail plug; wiper-on-wiper contacts. mounting: Straddlemount. No complete suffix chosen without order record. Linked TS-0698 PDF has no web text and direct403, so drawing dimensions and rows remain unverified. No physical compatibility, pin map or hardware validation is established.

Claim scope: Exact named component/family technical construction reference from the full current primary document; geometry, ratings and implementation limits do not transfer to other variants.

Source links: S265 · Evidence trail → (private workspace)

C248A · P248

3M identifies the 36-contact configuration of its Mini Delta Ribbon boardmount plug as an IEEE 1284C interface.

Claim scope: V43 catalogue-expansion identification fact only; not independent technical approval, fabrication data, wiring instruction, protocol guarantee or end-to-end compatibility proof.

Source links: S268 · Evidence trail → (private workspace)

Prepare this page for review →Read the evidence method →

Recorded evidence only. An inspection date, publisher label, source link or generated packet is not independent technical review, hardware testing, fabrication approval or a compatibility verdict.