EmbeddedRelated.com
The 2026 Embedded Online Conference
SM04B-SRSS-TB(LF)(SN)

SM04B-SRSS-TB(LF)(SN)

JST
Same family in a 4-position layout for applications requiring more connections while keeping the same mating housings.
Active3,241 in stock

Overview

The SM04B-SRSS-TB(LF)(SN) is a 4-position, 1.0mm pitch SH series wire-to-board header from JST. This surface-mount, right-angle connector is designed for high-density applications where a secure connection and low profile are required. It features a shrouded 4-wall design to protect contacts and prevent mismating in compact electronics.

Why Choose This Part

The 1.0mm pitch provides significant space savings compared to standard 2.0mm or 2.54mm headers. It includes solder retention features to ensure mechanical stability on the PCB during mating and unmating cycles. The side-entry (right-angle) orientation allows for a lower vertical profile in slim enclosures.

Applications

Internal Signal Routing
Connecting peripheral modules to a main PCB in space-constrained handheld devices.
Sensor Interfacing
Providing a reliable 4-pin interface for I2C or SPI sensors requiring power, ground, and two signal lines.
Battery Connections
Linking small lithium-polymer battery packs to charging circuitry in wearable hardware.
Display Backlighting
Powering LED backlight arrays in small-scale LCD modules.

Key Specifications

Style Board to Cable/Wire
Features Solder Retention
Shrouding Shrouded - 4 Wall
Termination Solder
Contact Type Male Pin
Contact Shape Square
Mounting Type Surface Mount, Right Angle
Connector Type Header
Fastening Type Push-Pull
Number of Rows 1
Pitch - Mating 0.039" (1.00mm)
Voltage Rating 50V
Contact Material Copper Alloy
Insulation Color Natural
Insulation Height 0.114" (2.90mm)
Insulation Material Polyamide (PA), Nylon
Number of Positions 4
Contact Finish - Post Tin
Current Rating (Amps) 1A
Operating Temperature -25degC ~ 85degC
Contact Finish - Mating Tin
Number of Positions Loaded All
Material Flammability Rating UL94 V-0

Also Consider

SM02B-SRSS-TB(LF)(SN) JST - A 2-position variant from the same SH series if only power or a single signal path is required.
The 2026 Embedded Online Conference