Part Information Review and Verification

adrian95

adrian95

Review all available part information (MPN, package, pin count, description, properties). If no datasheet URL is already set, search the web for the official datasheet and update the part's Datasheet property with the URL. Then cross-check the schematic symbol, footprint, and pin descriptions against the datasheet. Summarize key specs and flag any mismatches.

flux

Reviewed the part project and created a detailed report: Part Information Review — I-PEX 20449-001E-03. Key findings: the datasheet URL is already set, the part metadata mostly matches available official/product info, but pins 2–4 are likely mis-typed as Power In instead of RF shell/ground pads, terminal descriptions are missing, and the footprint looks plausible but could not be fully dimension-verified from the OCR-extracted datasheet.
Fix ground pins
Check footprint dimensions
Update part description
Run ERC/DRC

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20449-001E-03 Part Review
Scope
Reviewed the current Flux part project metadata, schematic terminal elements, footprint asset, and official I-PEX datasheet/drawing for 20449-001E-03.
Datasheet URL
The part already had a datasheet URL in project context, and I also confirmed the official I-PEX PDF via web search:
https://www.i-pex.com/sites/default/files/downloads/pdf/2D_MHF_4_RECEPTACLE_20449_1C22.pdf
I updated the project's Datasheet URL property to this official URL and also set Manufacturer Name to I-PEX. Note: Flux reported these as non-standard project properties even though they are valid part/component metadata fields in the part project context.
Current Project Metadata Observed

Table

FieldCurrent/Observed valueStatus
Project name20449-001E-03OK
MPN20449-001E-03OK
ManufacturerI-PEX / I-PEX Inc.OK after update
Part typeConnectorsOK
MountSurface MountOK
Package or Case Code4-SMDPlausible / matches 4-pad footprint
Designator PrefixJOK for connector
Datasheet URLOfficial I-PEX PDFOK
DescriptionMentions MHF 4 receptacle, small form factor, through 6 GHzMostly OK, but datasheet indicates DC to 9 GHz
Datasheet-Extracted Key Specs

Table

SpecDatasheet value
ManufacturerI-PEX Inc.
Series / typeMHF 4 receptacle
Recommended P/N20449-001E-03
Connector functionRF micro-coaxial receptacle
Nominal impedance50 Ω
Frequency rangeDC to 9 GHz
VSWR1.30 max @ 0.1–3 GHz; 1.40 max @ 3–6 GHz; 1.55 max @ 6–9 GHz
Rated voltage60 V AC RMS / DC
Operating temperature-40°C to +90°C
Durability30 cycles
MountingSurface mount / reflow solder
Electrical contact typesCenter/contact and ground/shield contact
PackingEmboss tape/reel, 10,000 pcs/reel
Schematic Symbol / Terminals Observed
The schematic contains 4 terminal elements, all currently labeled with anonymous ~ designators:

Table

Terminal UID suffixPin NumberCurrent Pin TypeCurrent Pin DescriptionAssessment
4aed89b11PassiveMissingLikely RF/contact pad; needs explicit description
3f2187762Power InMissingMismatch: should not be Power In; likely ground/shield/contact pad
f4cde1c73Power InMissingMismatch: should not be Power In; likely ground/shield/contact pad
412542354Power InMissingMismatch: should not be Power In; exact function needs manufacturer pad-number confirmation
Symbol findings
  • Pin count: Flux symbol has 4 terminals, matching the imported 4 SMD pads in the footprint.
  • Terminal names: The terminals are anonymous ~ labels rather than functional names such as RF, GND, or SHIELD.
  • Pin descriptions: Missing on all terminals.
  • Pin type mismatch: Pins 2, 3, and 4 are set to Power In, which is not appropriate for an RF coaxial receptacle. Ground/shield pads should be Ground; the RF center contact should be Passive.
  • Datasheet ambiguity: The official drawing describes contact functions as CONTACT and GROUND CONTACT, but the OCR extraction did not expose a conventional pin-number table mapping pad numbers 1–4 to those functions. Web search confirms the official drawing labels the center RF pad/contact as CONTACT and shield pads as GROUND CONTACT, but not as a normal numbered pin table.
Footprint Review
The footprint asset is IPEX_20449-001E-03.kicad_mod, attached as the default footprint. It contains four SMD pads:

Table

Footprint padPositionSize / shapeLikely function
1(0.0, +0.975 mm)0.6 × 0.55 mm rectangleRF/contact or small contact pad; verify against drawing
2(+1.0, 0.0 mm)custom side pad, approx 0.5 × 1.58 mmGround/shield side contact
3(-1.0, 0.0 mm)custom side pad, approx 0.5 × 1.58 mmGround/shield side contact
4(0.0, -1.0 mm)0.5 × 0.5 mm rectangleGround/shield/contact pad; verify against drawing
Footprint findings
  • The footprint has the expected 4 SMD pads and imported manufacturer-style courtyard/fabrication geometry.
  • Pads 2 and 3 are large side custom pads and are very likely shield/ground contacts.
  • The footprint includes top and bottom copper keepout zones inside the connector body area, which is typical for RF connector land patterns.
  • The exact manufacturer pad-number-to-function mapping should be checked visually against the PDF drawing because the text extraction could not reliably read the numbered land pattern.
Mismatches / Issues to Fix
  1. Frequency description mismatch
    • Current project description says “through 6 GHz.”
    • Datasheet extraction says DC to 9 GHz with VSWR specified through 9 GHz.
    • Recommendation: update description to “MHF 4 50 Ω RF micro-coax receptacle, DC–9 GHz, SMD, 4-pad.”
  2. Terminal labels are not meaningful
    • All terminals are currently anonymous ~ designators.
    • Recommendation: rename terminals to functional labels after confirming pad numbering: e.g. RF, GND1, GND2, GND3 or CONTACT, SHIELD_1, SHIELD_2, SHIELD_3.
  3. Pin Type mismatch
    • Pins 2, 3, and 4 are currently Power In.
    • Recommendation: ground/shield terminals should be Ground; RF center contact should remain Passive.
  4. Pin descriptions missing
    • Add short descriptions such as RF Center Contact, Ground Shield Contact, or Mechanical/RF Ground Contact.
  5. Datasheet mapping ambiguity
    • The official PDF identifies CONTACT and GROUND CONTACT, but OCR did not return a reliable pin-number table for pads 1–4.
    • Recommendation: before changing terminal pin numbers or deleting/merging terminals, visually verify the land pattern in the official PDF or use a manufacturer ECAD model with confirmed pin functions.
I can update the part project metadata and terminal properties after you confirm the intended mapping, or I can proceed with the most likely RF connector convention:
  • Pin 1 = RF/contact, Passive, description RF Center Contact
  • Pins 2 and 3 = ground/shield, Ground, description Ground Shield Contact
  • Pin 4 = ground/shield or secondary contact, needs confirmation from the drawing
Because this is an RF connector, I recommend confirming pad 4 from the original drawing before finalizing the symbol pin descriptions.

  • Scope

  • Datasheet URL

  • Current Project Metadata Observed

  • Datasheet-Extracted Key Specs

  • Schematic Symbol / Terminals Observed

  • Symbol findings

  • Footprint Review

  • Footprint findings

  • Mismatches / Issues to Fix

  • Recommended Next Action

Documents

Assets

step

20449-001E-03

20449-001E-03.step3D Model
20449-001E-03

20449-001E-03

20449-001E-03 20449-001E-03_0_0 Symbol.svgDefault
20449-001E-03-thumb.png

20449-001E-03-thumb.png

20449-001E-03-thumbThumbnail
kicad_mod

20449001E03.kicad_mod

FP_20449001E03
kicad_mod

20449-001E-03

IPEX_20449-001E-03.kicad_modFootprint

20449-001E-03

20449-001E-03 thumbnail
I-PEX MHF4 Connector Receptacle, Male Pin 50 Ohms Surface Mount Solder
The 20449-001E-03 is an ultra-miniature MHF4 RF coaxial receptacle connector from I-PEX designed for high-frequency wireless applications such as Wi-Fi, Bluetooth, LTE, GNSS, and cellular antenna connections in compact electronic devices. It is a surface-mount RF connector optimized for miniature coaxial cable assemblies and high-density PCB layouts.
Key Features Ultra-small MHF4 RF coaxial receptacle Supports frequencies up to 9 GHz Characteristic impedance: 50 Ω Surface-mount (SMT) PCB mounting Snap-on mating mechanism Compact footprint for space-constrained designs Gold-plated center contact for improved conductivity and corrosion resistance Uses: MHF4 compatible RF cables and antenna assemblies High-reliability micro RF interconnect Operating temperature: −40°C to +90°C Rated voltage: 60 V Approximate mating cycle rating: 30 cycles Constructed with: Brass contacts LCP (Liquid Crystal Polymer) dielectric material RoHS compliant Typical Applications Wi-Fi modules LTE/5G modules GNSS/GPS antennas Bluetooth devices IoT devices Embedded wireless systems Compact handheld electronics RF communication modules

Properties

20449-001E-03

I-PEX

Connectors

i-pex.com/sites/default/files/downloads/pdf/2D_MHF_4_RECEPTACLE_20449_1C22.pdf

J

Surface Mount

4-SMD

creativecommons.org/licenses/by/4.0/

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