
A functional match from the same manufacturer, but with a greater height of 6mm compared to the target's 4.3mm.
The KH-6X6X4.3H-STM is a 6x6mm surface-mount tactile switch from Kinghelm, notable for its 4.3mm height and 250gf operating force. Finding a substitute requires careful matching of mechanical dimensions and electrical ratings.
Height difference is the primary concern for both top candidates, requiring mechanical verification.
Key electrical parameters like contact rating and operating force are well-matched by candidates.
Candidates are from major manufacturers like E-Switch, potentially improving availability.
Direct replacement for KH-6X6X4.3H-STM should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Start with Datasheet verified or Strong match candidates for KH-6X6X4.3H-STM, then review parametric alternatives for package and electrical fit.
Mechanical interference or misalignment due to different component height is the main risk.

A functional match from the same manufacturer, but with a greater height of 6mm compared to the target's 4.3mm.
| Feature / factor | KH-6X6X4.3H-STM | TL1105SF250Q | KH-6X6X6H-STM | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 6x6mm SMT | 6x6mm SMT (J-lead) | 6x6mm SMT | 6x6mm SMT (J-lead) — Datasheet shows compatible land pattern.; KH-6X6X6H-STM: Body size matches. | |
| Dimensions | 4.3 mm | 3.1 mm | 6.0 mm | 3.1 mm / 6.0 mm — Shorter body, verify actuator alignment.; KH-6X6X6H-STM: Taller body may cause mechanical interference. | |
| Operating Force | 250gf | ~255gf (2.5N) | 250/180gf | ~255gf (2.5N) / 250/180gf — Operating force is a very close match.; KH-6X6X6H-STM: Operating force is identical. | |
| Travel | 0.3 mm | 0.25 mm | - | 0.25 mm — Slightly less travel, may affect tactile feel. | |
| Current | 50mA @ 12VDC | - | 50mA @ 12VDC | 50mA @ 12VDC — Contact rating matches. |
Verified drop-in options for KH-6X6X4.3H-STM are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.