What are the key specifications?

It features a 1A current rating, 125V voltage rating, -40°C to +105°C temperature range, and is constructed with a Nylon 6T UL94V-0 housing and tin-plated phosphor bronze contacts.

What should engineers review before using this connector?

Engineers should confirm the PCB layout against the datasheet, ensure the mating housing (A1251 series) is available, and verify that the SMT process parameters are compatible with the Nylon 6T material.

What are the sourcing risks?

The part is widely available through major distributors with high stock levels, indicating low supply risk for standard production volumes.

What is the pinout of A1251WV-S-4P?

Use the A1251WV-S-4P datasheet for the official pinout diagram and pin names. In PartGenie, ask Datasheet AI about A1251WV-S-4P pinout to locate pins, power rails, and interface signals before layout.

A1251WV-S-4P Datasheet, Specs, Alternatives & ECAD | CJT

AI summary

The CJT A1251WV-S-4P is a 4-pin, 1.25mm pitch vertical SMT header connector, ideal for compact wire-to-board applications in consumer and industrial electronics.

Best for

Compact PCB designs
Automated SMT assembly
Wire-to-board signal connections

Avoid if

High-current applications exceeding 1A
Environments requiring extreme vibration resistance without additional strain relief

Check before use

PCB footprint dimensions
Mating housing compatibility

Key specifications

Pitch: 1.25 mm
Positions: 4
Mounting: SMT
Current Rating: 1 A

Compliance & Environment

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

Application

Consumer ElectronicsIndustrial Control

Datasheet

64674c2a1b1b05d948ad1751430bcf40.pdf

800 KB

Datasheet AI

CAD Models

Download ECAD models for A1251WV-S-4P: 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
ZX-MX1.25-4PLTManufacturer	URL can't contain control characters. '/component/docs/8606f5fac6810428e2fc2be805a83eb8_2304140030_CJT-Changjiang-Connectors-A1251WV-S-4P_C225106.pdf, https://s3.lax.sharktech.net/viassion/datasheets/hqonline/64674c2a1b1b05d948ad1751430bcf40.pdf' (found at least ' ')	Has caveats

ZX-MX1.25-4PWTManufacturer	URL can't contain control characters. '/component/docs/8606f5fac6810428e2fc2be805a83eb8_2304140030_CJT-Changjiang-Connectors-A1251WV-S-4P_C225106.pdf, https://s3.lax.sharktech.net/viassion/datasheets/hqonline/64674c2a1b1b05d948ad1751430bcf40.pdf' (found at least ' ')	Has caveats
WAFER-MX1.25-4PWBManufacturer	URL can't contain control characters. '/component/docs/8606f5fac6810428e2fc2be805a83eb8_2304140030_CJT-Changjiang-Connectors-A1251WV-S-4P_C225106.pdf, https://s3.lax.sharktech.net/viassion/datasheets/hqonline/64674c2a1b1b05d948ad1751430bcf40.pdf' (found at least ' ')	Has caveats
WAFER-GH1.25-4PWBManufacturer	URL can't contain control characters. '/component/docs/8606f5fac6810428e2fc2be805a83eb8_2304140030_CJT-Changjiang-Connectors-A1251WV-S-4P_C225106.pdf, https://s3.lax.sharktech.net/viassion/datasheets/hqonline/64674c2a1b1b05d948ad1751430bcf40.pdf' (found at least ' ')	Has caveats

Design and risk insights

Questions & answers

It is a 1.25mm pitch, 4-position vertical SMT male header connector manufactured by CJT, designed for wire-to-board connectivity.

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 A1251WV-S-4P?+×

What are the key specifications?+×

What should engineers review before using this connector?+×

What are the sourcing risks?+×

What is the pinout of A1251WV-S-4P?+×