Side by side

I-PEX MHF I vs MHF 4

I-PEX documents distinct height families (MHF I 2.5/3.0 mm maximum variants versus MHF 4 1.2 mm). MHF 4L has manufacturer-described MHF 4 mating; do not extend that to MHF I.

Computer-generated illustration, not a photograph. — P354 · ConnectorI-PEX MHF I micro-coaxial RF connector

How they differ

I-PEX MHF I micro-coaxial RF connector Identify the labeled I-PEX assembly and cable-size variant, then check the maker matrix for an MHF I plug and matching board receptacle.
I-PEX MHF 4 low-profile micro-coaxial RF connector Verify the board receptacle and cable-plug manufacturer part numbers against I-PEX MHF 4 documentation instead of guessing by a tiny snap outline.

At a glance

Source-scoped form facts; counts, variants and unknowns are distinct
Field	I-PEX MHF I micro-coaxial RF connector	I-PEX MHF 4 low-profile micro-coaxial RF connector
Type	Connector	Connector
Family	Micro RF coax	Micro RF coax
Shape	miniature rf snap	miniature rf snap
Nominal 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.
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.
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.
Connector role	SMT coaxial RF receptacle (20279-001E-03); Coaxial cable plug (20278-112R-13)S465Source-scoped examples are separate; select the exact variant and measured axis. 20279-001E-03. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use. 20278-112R-13. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use.	SMT coaxial RF receptacle (20449-001E-03); Coaxial cable plug (20611-001R)S466Source-scoped examples are separate; select the exact variant and measured axis. 20449-001E-03. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use. 20611-001R. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use.
Key distinction	MHF I is not the same family identity as MHF 4; appearance and cable diameter alone do not certify mating.	The manufacturer separately documents MHF 4L mating with MHF 4; that specific qualification is not a general MHF I or U.FL compatibility statement.

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: Micro RF coax

The reference ledger

Read the same question across.

2 selected records · 16 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	P354 / ConnectorI-PEX MHF I micro-coaxial RF connector Identification schematic · not to scale · drawing review pending	P355 / ConnectorI-PEX MHF 4 low-profile micro-coaxial RF connector Identification schematic · not to scale · drawing review pending
Layer	Connector	Connector
Key distinction	MHF I is not the same family identity as MHF 4; appearance and cable diameter alone do not certify mating.	The manufacturer separately documents MHF 4L mating with MHF 4; that specific qualification is not a general MHF I or U.FL compatibility statement.
Nominal 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.
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.
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.
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.
Contact pitch	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.
Dimensions / axis	Not recordedNo qualified value remains for this contact/body field. Source context is retained in variant_notes; no value inferred from artwork or names.	Not recordedNo qualified value remains for this contact/body field. Source context is retained in variant_notes; no value inferred from artwork or names.
Connector role	SMT coaxial RF receptacle (20279-001E-03); Coaxial cable plug (20278-112R-13)S465Source-scoped examples are separate; select the exact variant and measured axis. 20279-001E-03. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use. 20278-112R-13. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use.	SMT coaxial RF receptacle (20449-001E-03); Coaxial cable plug (20611-001R)S466Source-scoped examples are separate; select the exact variant and measured axis. 20449-001E-03. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use. 20611-001R. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use.
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.
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.
Family height options	2.5 / 3.0 mm maximum, model-specificC354A	Not an equivalent field
Examples, not a verified assembly	20278-112R-13 plug; 20279-001E-03 receptacleC354B	Not an equivalent field
Documented height	Not an equivalent field	1.2 mm max. for MHF 4 manufacturer familyC355A
Examples	Not an equivalent field	20611-001R plug; 20449-001E-03 receptacleC355B
Evidence	C354A,C354B,C354C → Independent review pending	C355A,C355B,C355C,C355D → 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

I-PEX MHF I micro-coaxial RF connectorP354 / Connector: Connector
I-PEX MHF 4 low-profile micro-coaxial RF connectorP355 / Connector: Connector

Key distinction

I-PEX MHF I micro-coaxial RF connectorP354 / Connector: MHF I is not the same family identity as MHF 4; appearance and cable diameter alone do not certify mating.
I-PEX MHF 4 low-profile micro-coaxial RF connectorP355 / Connector: The manufacturer separately documents MHF 4L mating with MHF 4; that specific qualification is not a general MHF I or U.FL compatibility statement.

Nominal contacts

I-PEX MHF I micro-coaxial RF connectorP354 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
I-PEX MHF 4 low-profile micro-coaxial RF connectorP355 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Positions / cavity span

I-PEX MHF I micro-coaxial RF connectorP354 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
I-PEX MHF 4 low-profile micro-coaxial RF connectorP355 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Populated contacts

I-PEX MHF I micro-coaxial RF connectorP354 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
I-PEX MHF 4 low-profile micro-coaxial RF connectorP355 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Contact rows

I-PEX MHF I micro-coaxial RF connectorP354 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
I-PEX MHF 4 low-profile micro-coaxial RF connectorP355 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Contact pitch

I-PEX MHF I micro-coaxial RF connectorP354 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
I-PEX MHF 4 low-profile micro-coaxial RF connectorP355 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Dimensions / axis

I-PEX MHF I micro-coaxial RF connectorP354 / Connector: Not recordedNo qualified value remains for this contact/body field. Source context is retained in variant_notes; no value inferred from artwork or names.
I-PEX MHF 4 low-profile micro-coaxial RF connectorP355 / Connector: Not recordedNo qualified value remains for this contact/body field. Source context is retained in variant_notes; no value inferred from artwork or names.

Connector role

I-PEX MHF I micro-coaxial RF connectorP354 / Connector: SMT coaxial RF receptacle (20279-001E-03); Coaxial cable plug (20278-112R-13)S465Source-scoped examples are separate; select the exact variant and measured axis. 20279-001E-03. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use. 20278-112R-13. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use.
I-PEX MHF 4 low-profile micro-coaxial RF connectorP355 / Connector: SMT coaxial RF receptacle (20449-001E-03); Coaxial cable plug (20611-001R)S466Source-scoped examples are separate; select the exact variant and measured axis. 20449-001E-03. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use. 20611-001R. Named primary-source example only. Identification facts do not certify mating, electrical compatibility, fabrication or powered use.

Coupling / latch

I-PEX MHF I micro-coaxial RF connectorP354 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
I-PEX MHF 4 low-profile micro-coaxial RF connectorP355 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Keying / polarization

I-PEX MHF I micro-coaxial RF connectorP354 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
I-PEX MHF 4 low-profile micro-coaxial RF connectorP355 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Family height options

I-PEX MHF I micro-coaxial RF connectorP354 / Connector: 2.5 / 3.0 mm maximum, model-specificC354A
I-PEX MHF 4 low-profile micro-coaxial RF connectorP355 / Connector: Not an equivalent field

Examples, not a verified assembly

I-PEX MHF I micro-coaxial RF connectorP354 / Connector: 20278-112R-13 plug; 20279-001E-03 receptacleC354B
I-PEX MHF 4 low-profile micro-coaxial RF connectorP355 / Connector: Not an equivalent field

Documented height

I-PEX MHF I micro-coaxial RF connectorP354 / Connector: Not an equivalent field
I-PEX MHF 4 low-profile micro-coaxial RF connectorP355 / Connector: 1.2 mm max. for MHF 4 manufacturer familyC355A

Examples

I-PEX MHF I micro-coaxial RF connectorP354 / Connector: Not an equivalent field
I-PEX MHF 4 low-profile micro-coaxial RF connectorP355 / Connector: 20611-001R plug; 20449-001E-03 receptacleC355B

Evidence

I-PEX MHF I micro-coaxial RF connectorP354 / Connector: C354A,C354B,C354C →
Independent review pending
I-PEX MHF 4 low-profile micro-coaxial RF connectorP355 / Connector: C355A,C355B,C355C,C355D →
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.

Continue the distinction

Compare next

Browse every comparison →

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Add a field note

Evidence behind this page

Scope first. Source second. Approval separate.

3 linked sources · 7 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 2027-01-07. This is a recorded-date assessment, not a live source check. Page-level independent review is not established by this panel.

Inspect 3 source scopes, access limits and dates

S465 · I-PEX MHF I product page and part matrix

I-PEX · Unclassified publisher domain · inspected 2026-10-09 · due 2027-01-07

Within inspection window

Scoped support: Identifies I-PEX MHF I series, example cable plug and SMT receptacle, no cross-series mating endorsement.

Not established / limitations: Up-to-9GHz manufacturer claim is not a tested performance rating for any unnamed assembly.

Locator: Mated-height variants; RECOMMENDED PART NUMBERS: 20278-112R-13, 20279-001E-03

S466 · I-PEX MHF 4 product page and part matrix

I-PEX · Unclassified publisher domain · inspected 2026-10-09 · due 2027-01-07

Within inspection window

Scoped support: Identifies I-PEX MHF 4 low-profile parts and explicitly supported MHF 4L mating qualification from I-PEX, not MHF I/U.FL.

Not established / limitations: Only manufacturer-described MHF 4 / 4L intermateability; exact OD, plug/receptacle, height and harness variants require confirmation.

Locator: Product header and MHF 4 RECOMMENDED PART NUMBERS: plug 20611-001R, receptacle 20449-001E-03; 4L note

S481 · 20449 MHF 4 receptacle drawing

I-PEX · Unclassified publisher domain · inspected 2026-10-11 · due 2027-01-09

Within inspection window

Scoped support: Exact receptacle and plug-dependent assembly-height distinction.

Not established / limitations: Only the exact named source/example supports the observation. No universal mating, wiring, maximum rating or mechanical tolerance is inferred. Drawing 20449 revision 16, 2022-05-27. Publicly linked drawing carries a confidentiality marking; no source bytes or traced geometry are redistributed and rights review stays open.

Locator: Sheet 1 of 7: 20449-001E-03 recommended; receptacle top/side views and mated-height table.

Trace 7 claims to their source records

C354A · P354

I-PEX describes MHF I as a miniature RF antenna connector family with 2.5 mm and 3.0 mm maximum mated-height variants.

Claim scope: Manufacturer-named series/part-number identification only, not generic mating, powered operation, radio performance or electrical safety validation.

Source links: S465 · Evidence trail → (private workspace)

C354B · P354

I-PEX recommends MHF I plug 20278-112R-13 for 1.13 mm outside-diameter cable and receptacle 20279-001E-03 as a 3-pad surface-mount part.

Claim scope: Manufacturer-named series/part-number identification only, not generic mating, powered operation, radio performance or electrical safety validation.

Source links: S465 · Evidence trail → (private workspace)

C354C · P354

I-PEX MHF I manufacturer feature-table family: smt reference size: 3.1 x 3.0 mm; cable options: Micro-coax OD 0.81, 1.13, 1.32, 1.37, 1.8 or 2.0 mm; selection depends on plug type; rf range: Up to 9 GHz; published plug VSWR limits depend on cable diameter. Only the I-PEX MHF I manufacturer feature-table family feature table; no exact individual part properties or mating approval are established.

Claim scope: Only the I-PEX MHF I manufacturer feature-table family feature table; no exact individual part properties or mating approval are established.

Source links: S465 · Evidence trail → (private workspace)

C355A · P355

I-PEX MHF 4 is identified as a 1.2 mm maximum mated-height low-profile micro-coaxial RF family, distinct from MHF I.

Claim scope: Manufacturer-named series/part-number identification only, not generic mating, powered operation, radio performance or electrical safety validation.

Source links: S466 · Evidence trail → (private workspace)

C355B · P355

I-PEX identifies MHF 4 plug 20611-001R and receptacle 20449-001E-03; I-PEX explicitly lists MHF 4L as intermateable with MHF 4 under its published series scope.

Claim scope: Manufacturer-named series/part-number identification only, not generic mating, powered operation, radio performance or electrical safety validation.

Source links: S466 · Evidence trail → (private workspace)

C355C · P355

I-PEX drawing 20449 gives 1.2 mm maximum mated height for listed MHF 4 plug pairings and 1.4 or 1.7 mm for other listed MHF 4L pairings.

Claim scope: Use the actual plug pairing in the manufacturer table; not a universal height for every intermateable assembly.

Source links: S481 · Evidence trail → (private workspace)

C355D · P355

I-PEX MHF 4 manufacturer feature-table family: mated height: 1.2 mm maximum, family mated-configuration feature; cable options: Micro-coax AWG 36, outer diameter 0.81 mm; rf range: Up to 9 GHz; plug VSWR limits are separately tabulated by frequency. Only the I-PEX MHF 4 manufacturer feature-table family feature table; no exact individual part properties or mating approval are established.

Claim scope: Only the I-PEX MHF 4 manufacturer feature-table family feature table; no exact individual part properties or mating approval are established.

Source links: S466 · 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.