Is there a pin-compatible replacement for SM12B-GHS-TB(LF)(SN)?

Currently, no replacement has been verified as pin-compatible. While candidates share the same 1.25mm pitch and right-angle orientation, their PCB footprint and mating dimensions must be confirmed from the datasheet before use.

What risks should I check before replacing SM12B-GHS-TB(LF)(SN)?

The main risks are mechanical. First, verify the PCB land pattern (footprint) in the datasheet matches your board layout. Second, confirm the connector's housing and keying are compatible with your mating part, as different series (e.g., JST GH vs. Molex PicoBlade) are typically not inter-mateable.

SM12B-GHS-TB(LF)(SN) Alternatives, Datasheet & Cross Reference | JST

Find and compare potential alternatives for the JST SM12B-GHS-TB(LF)(SN) 12-pin right-angle connector. Review key parametric differences and mechanical compatibility risks before selection.

AI replacement insight

Package riskhigh

Footprint and mating interface of alternatives are not guaranteed to match the JST GH series.

Electrical risklow

Candidates with matching or superior voltage/current ratings are available.

Can it be replaced directly?

No verified direct replacement is available. Potential alternatives require engineering review to confirm mechanical and electrical compatibility.

Best replacement path

Cross-reference to other 1.25mm pitch, 12-pin, right-angle SMT headers, followed by rigorous datasheet comparison of mechanical drawings.

Main risk

Mechanical incompatibility, including PCB footprint and mating connector dimensions, is the primary risk.

Recommended alternatives

A potential alternative with higher voltage/current ratings; verify mechanical fit from datasheet.

View details

Alternative comparison matrix

Feature / factor	SM12B-GHS-TB(LF)(SN)	HC-1.25-12PWT	532611271	Compatibility / risk
Package	12-pin Header	1.25mm Pitch SMT Header	SMT Header (PicoBlade 53261)	1.25mm Pitch SMT Header / SMT Header (PicoBlade 53261) — Footprint and mating dimensions require verification against target's JST GH series.; 532611271: Different series (Molex PicoBlade vs JST GH). Footprint and mating dimensions require verification.
Orientation	Surface Mount, Right Angle	Right Angle	Right Angle	Right Angle — Both are right-angle SMT headers.; 532611271: Both are right-angle SMT headers.
Current	1.0 A	2 A	Missing	2 A / Missing — Candidate has a higher current rating.; 532611271: Current rating not provided; must be checked in datasheet. Target is 1.0A.
Voltage	50 V	250 V	Missing	250 V / Missing — Candidate has a higher voltage rating.; 532611271: Voltage rating not provided; must be checked in datasheet. Target is 50V.

Application & sourcing insights

Questions & answers

Potential alternatives like the Molex 532611271 (PicoBlade series) or HCTL HC-1.25-12PWT exist, but they are not verified drop-in replacements. An engineer must review the datasheets to confirm mechanical and electrical suitability for your application.