Family reference

Micro RF coax connectors

Browse the documented Micro RF coax connector forms while keeping identification separate from implementation-specific capability.

3 forms 3 engineering profiles 3 related comparisons

Recognition & reference

Browse the forms

Read as a table ↓

Recognition illustrations are not to scale or fabrication drawings. The label-led symbols below, where present, are not interface geometry. Read the illustration limits in each exact reference; equal image boxes do not establish equal physical sizes.

P353 / Micro RF coax / Connector form

Hirose U.FL micro-coaxial RF connector

A tiny round antenna snap does not identify its series or prove that it mates with a similarly shaped I-PEX part.

Shape label: miniature-rf-snap
Common aliases: U.FL, U.FL-R-SMT-1, U.FL coax, Hirose UFL
Reference depth: Engineering profile →

Read reference ↗Compare →

P354 / Micro RF coax / Connector form

I-PEX MHF I micro-coaxial RF connector

MHF I is not the same family identity as MHF 4; appearance and cable diameter alone do not certify mating.

Shape label: miniature-rf-snap
Common aliases: I-PEX MHF I, MHF I, MHF1, MHF I antenna cable
Reference depth: Engineering profile →

Read reference ↗Compare →

P355 / Micro RF coax / Connector form

I-PEX MHF 4 low-profile micro-coaxial RF 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.

Shape label: miniature-rf-snap
Common aliases: I-PEX MHF4, MHF 4, MHF4 antenna connector, MHF 4 receptacle
Reference depth: Engineering profile →

Read reference ↗Compare →

Reference table3 connector forms · names, shape labels & reference depth

An alternate overview of the same facts shown in the cards. On narrow screens, scroll the table horizontally or read the cards above. Alias lists retain the existing first four entries; the full record has further detail. This is not a dimension, pinout or compatibility table.

Connector forms in the Micro RF coax family
Connector form	Shape	Common aliases	Engineering
Hirose U.FL micro-coaxial RF connector	miniature-rf-snap	U.FL, U.FL-R-SMT-1, U.FL coax, Hirose UFL	Engineering profile →
I-PEX MHF I micro-coaxial RF connector	miniature-rf-snap	I-PEX MHF I, MHF I, MHF1, MHF I antenna cable	Engineering profile →
I-PEX MHF 4 low-profile micro-coaxial RF connector	miniature-rf-snap	I-PEX MHF4, MHF 4, MHF4 antenna connector, MHF 4 receptacle	Engineering profile →

Tell them apart

Useful Micro RF coax comparisons

Related pages may include forms from another family. They explain distinctions, not permission to connect.

Hirose U.FL vs I-PEX MHF ITwo manufacturer-named miniature RF families. Round snap appearance is not a mating approval. Check the exact manufacturer connector and cable assembly codes; do not trial-fit.I-PEX MHF I vs MHF 4I-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.U.FL, MHF I and MHF 4 identificationDifferent manufacturer families can share a miniature coax snap appearance. Part numbers and a documented plug–receptacle match govern selection, not how close they look.

Before choosing a reference

Micro RF coax names and terminology

Resolve abbreviations, informal names and legacy labels without treating an alias as an additional connector identity.

Open Micro RF coax terminology and aliases →

Continue with the evidence

From the form to the task.

A family name is a starting point. Use the exact record and device documentation before choosing cables or planning a connection.

Still identifying?Use the visual Finder →Working through a connection?Choose the task, without prefilled answers →