Andrew Content Marketer
On Jul 7, 2025

B4B-PH-K-S JST Wire Housing Header – 4 Pin, 2.0mm

B4B-PH-K-S (LF)(SN) Headers & Wire Housings by JST – Compact, Reliable 2.0mm Pitch Connectors for Wire-to-Board Interfaces

The Headers & Wire Housings B4B-PH-K-S (LF)(SN) by JST are high-quality wire-to-board connectors that offer compact design, secure mating, and reliable electrical contact for low-current, high-density applications. With a 2.0mm pitch and through-hole vertical mounting, these headers are part of JST’s well-known PH series—trusted for their ease of use and long-term durability. The Headers & Wire Housings by JST are widely used in consumer electronics, LED lighting systems, and industrial control units due to their low profile and dependable performance.

In this blog, we’ll explore the key specifications, features, application scope, mounting tips, and why Xon Electronics is your best global source for JST connectors.

Technical Specifications of B4B-PH-K-S (LF)(SN)

Manufacturer: JST
Part Number: B4B-PH-K-S (LF)(SN)
Series: PH Series
Connector Type: Header
Number of Positions: 4
Pitch: 2.0mm
Mounting Type: Through Hole, Vertical
Termination: Solder
Current Rating: 2A per contact
Plating: Tin over Phosphor Bronze
Operating Temperature: -25°C to +85°C
Category: Connectors, Headers & Wire Housings by JST

This 4-position connector delivers secure mating, minimal contact resistance, and easy integration into PCB designs.

Key Features of B4B-PH-K-S (LF)(SN) Connector

2.0mm Pitch with Low Profile – Ideal for compact PCB layouts
Reliable Locking Mechanism – Prevents accidental disconnects
Tin-Plated Terminals – Corrosion-resistant for long-term use
RoHS-Compliant (Lead-Free) – Environmentally friendly design
Easy Mating with PH Series Housing – Simplifies harness integration

These features make the B4B-PH-K-S (LF)(SN) Headers & Wire Housings by JST a dependable choice for both signal and low-current power applications.

Applications of Headers & Wire Housings by JST

The Headers & Wire Housings by JST are popular in industries that require compact and secure electrical interfaces:

LED Lighting Strips and Drivers
Battery-Powered Consumer Electronics
Office Equipment and Printers
Home Appliances and Audio Systems
IoT Devices and Embedded Boards
Industrial Sensors and Controllers

With high mating reliability and simple assembly, the B4B-PH-K-S (LF)(SN) Headers & Wire Housings by JST are favored in designs that require stable, vibration-resistant wire-to-board connections.

Assembly and Soldering Overview

PCB Preparation: Ensure through-hole pads are clean and pre-tinned if necessary.
Component Placement: Insert header pins into the matching 2.0mm holes.
Soldering: Use wave or hand soldering to create secure joints.
Mating: Use compatible PH-series wire housings like PHR-4 or equivalent.
Testing: Perform continuity checks to ensure reliable signal transfer.

Its keyed housing design ensures proper orientation during cable assembly and minimizes connection errors.

Use Case Scenario: Wire-to-Board Interface in Compact LED Driver

Scenario: A lighting solutions company required a compact, vibration-resistant connector for their new LED driver circuit.

Problem: Standard headers were too large and frequently disconnected under vibration.

Solution: The B4B-PH-K-S (LF)(SN) Headers & Wire Housings by JST offered a low-profile design with secure housing engagement and high mating retention.

Result: Reduced service issues, smaller form factor, and consistent power delivery in the field.

This example highlights how Headers & Wire Housings by JST help engineers meet size, reliability, and cost goals in demanding applications.

Download Datasheet for B4B-PH-K-S (LF)(SN)

Need dimensions, housing compatibility, or mechanical specs?

[Download B4B-PH-K-S (LF)(SN) Datasheet from Xon Electronics]

Why Buy from Xon Electronics?

Xon Electronics provides 100% genuine Headers & Wire Housings by JST, including the B4B-PH-K-S (LF)(SN), with:

Original JST Factory Stock
Worldwide Delivery – USA, India, Australia, Europe & more
Bulk Discounts for Manufacturers and OEMs
Application Guidance for Connector Matching
Easy, Secure Online Ordering System

Trust Xon Electronics for all your connector needs—fast, reliable, and global.

Conclusion

The B4B-PH-K-S (LF)(SN) Headers & Wire Housings by JST are reliable, compact, and easy to integrate—making them a top choice for modern wire-to-board designs. With a proven track record in everything from lighting to IoT, this JST connector ensures durability, safety, and easy assembly. Now available at Xon Electronics with international shipping to the USA, India, Australia, Europe, and other regions.