SM20B-SRSS-TB

Crimp Style Connector

The SM20B-SRSS-TB is a crimp style connector from JST. View the full SM20B-SRSS-TB datasheet below including key specifications.

SM20B-SRSS-TB shares its datasheet with BM04B-SRSS-TB, whose page lists every part number it covers.

Official SM20B-SRSS-TB datasheet (PDF) — the source this page was extracted from.

Manufacturer

JST

SM20B-SRSS-TB Key Specifications

Parameter	Value
China RoHS	Compliant
Color	Natural
Connector Type	Male Pin
Contact Material	Copper, Tin
Contact Plating	Tin
Contact Resistance	40 mΩ
Current Rating	1 A
Depth	2.9 mm
Dielectric Material	Polyamide
Flammability Rating	UL94 V-0
Gender	Male
Height	4.25 mm
Housing Color	Natural
Housing Material	Nylon
Insulation Resistance	100 MΩ
Lead Free	Lead Free
Lead Pitch	1 mm
Length	6 mm
Lifecycle Status	Production (Last Updated: 9 months ago)
Material	Polyamide
Max Current Rating	1 A
Max Operating Temperature	85 °C
Max Voltage Rating (AC)	50 V
Max Voltage Rating (DC)	50 V
Min Operating Temperature	-25 °C
Mount	Surface Mount, Termination
Number of Contacts	4
Number of Pins	4
Number of Positions	4
Number of Rows	1
Packaging	Cut Tape
Pitch	990.6 µm
REACH SVHC	Yes
RoHS	Compliant
Schedule B	8536694040
Terminal Pitch	1 mm
Termination	Solder
Voltage Rating	50 V
Voltage Rating (AC)	50 V
Width	2.9 mm

SM20B-SRSS-TB Overview

Part: BM04B-SRSS-TB(LF)(SN) — JST

Type: Disconnectable Crimp Style Connector

Description: The world's first 1.0mm (.039") pitch crimp style connector, featuring an ultra-compact, low profile design with a 2.95mm mounting height for side entry types.

Operating Conditions:

Supply voltage: 50V AC, DC
Operating temperature: -25˚C to +85˚C
Current rating: 1.0A AC, DC (AWG #28)

Key Specs:

Current rating: 1.0A AC, DC (AWG #28)
Voltage rating: 50V AC, DC
Temperature range: -25˚C to +85˚C
Contact resistance (Initial value): 20m Ω max.
Contact resistance (After environmental testing): 40m Ω max.
Insulation resistance: 100M Ω min.
Withstanding voltage: 500V AC/minute
Applicable wire: AWG #32 to #28
Insulation O.D.: 0.4 to 0.8mm (.016" to .031")

Features:

Ultra-compact, low profile design (2.95mm mounting height for side entry type)
Compatible with SR insulation displacement connectors
Housing lances for contact lock-in confirmation

Package:

Shrouded header (Top entry type)
Shrouded header (Side entry type)

Variants on the same datasheet

These parts have exact links to the same datasheet. They are candidates to compare, not verified drop-in replacements; check package, pinout and electrical limits.

Part Number	Manufacturer	Package
BM04B-SRSS-TB	JST	—
BM04B-SRSS-TB(LF)(SN)	JST	Shrouded Header (Top Entry Type)
SHR-20V-S-B	JST	—
SSH-003T-P0.2-H	JST	Reel

More datasheets

All JST datasheets (5)

Data on this page is extracted from publicly available manufacturer datasheets using automated tools including AI. It may contain errors or omissions. Always verify specifications against the official manufacturer datasheet before making design or purchasing decisions. See our Terms of Service. Rights holders can submit a takedown request.

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