What are the key specifications?

It features a 3A current rating, 250V voltage rating, and is constructed with a glass-filled PA 66 wafer and tin-plated brass contacts.

What is the pinout of B4B-XH-2(LF)(SN)?

Use the B4B-XH-2(LF)(SN) datasheet for the official pinout diagram and pin names. In PartGenie, ask Datasheet AI about B4B-XH-2(LF)(SN) pinout to locate pins, power rails, and interface signals before layout.

B4B-XH-2(LF)(SN) Datasheet, Specs, Alternatives & ECAD | JST

AI summary

The B4B-XH-2(LF)(SN) is a 4-pin, 2.5mm pitch shrouded header from JST's XH series, widely used for reliable wire-to-board connections.

Best for

General wire-to-board connectivity
Industrial control systems

Avoid if

High-vibration environments without strain relief
Applications requiring gold-plated contacts

Check before use

PCB hole diameter
Mating connector series

Key specifications

Positions: 4
Pitch: 2.5 mm
Current: 3 A

Compliance & Environment

RoHS: Compliant
REACH: -
MSL: -
ECCN: -
HTSUS: -

Application

IndustrialConsumer

Datasheet

8a41d6a1f8a6d219271c885b5cbf982c_2304140030_JST-B4B-XH-2-LF-SN_C157999.pdf

800 KB

Datasheet AI

CAD Models

Download ECAD models for B4B-XH-2(LF)(SN): KiCad symbol & footprint, Altium footprint, PCB footprint, and 3D model.

EDA Symbol

Schematic symbol for your EDA tool

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PCB Footprint

Land pattern for PCB layout

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3D Model

STEP file for mechanical design

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KiCad Library

Verified KiCad 8 symbol, footprint, and 3D model

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Where to Buy

Real-time and catalog pricing from verified distributors

Alternative components

Part	Details	Match
XH-4PSManufacturer	XH-4PS is a Redesign Alternative for B4B-XH-2(LF)(SN), because package / footprint differs; review the narrower temperature rating.	Has caveats

XHB-D-4AManufacturer	XHB-D-4A is Not Recommended as a replacement for B4B-XH-2(LF)(SN), because output current rating is below the required load and package / footprint differs.	Has caveats
ZX-XH2.54-4PZZ-YManufacturer	404 NOT_FOUND. {'error': {'code': 404, 'message': 'Publisher model `projects/still-protocol-478404-g8/locations/us-central1/publishers/google/models/gemini-3.1-pro-preview` was not found or your project does not have access to it. Ensure you are using a valid model name and that the model is available in the specified region. For more information, see: https://docs.cloud.google.com/gemini-enterprise-agent-platform/resources/locations.', 'status': 'NOT_FOUND'}}	Has caveats

Design and risk insights

Questions & answers

It is a 4-circuit, 2.5mm pitch, through-hole shrouded header connector from JST, designed for wire-to-board applications.

AI summary

Best for

Avoid if

Check before use

Key specifications

Compliance & Environment

Application

Datasheet

CAD Models

Where to Buy

Alternative components

Design and risk insights

Questions & answers

What is the B4B-XH-2(LF)(SN)?+×

What are the key specifications?+×

What is the pinout of B4B-XH-2(LF)(SN)?+×