KTD0621-0501C0101
GANGYUAN
Needs validationmedium risk
KTD0621 is an electrical functional alternate with larger mechanics.
Best Alternatives to GT-TC029B-H025-L1N
GT-TC029B-H025-L1N is a 2-pin SMD tactile switch. Current candidates are functional alternates, not proven pin-compatible replacements.
AI replacement insight
Electrical risklow
Best candidates meet 50mA 12V.
Package riskhigh
No footprint match is proven.
Firmware risklow
Passive switch; no firmware interface.
Sourcing riskmedium
Some lifecycles are dash.
Can it be replaced directly?
No pin-compatible replacement is proven from the provided data.
Best replacement path
Start with KTD0621 for electrical fit, then verify footprint and height.
Main risk
Mechanical footprint and pinout are not confirmed.
Recommended alternatives
3Alternative comparison matrix
| Feature / factor | GT-TC029B-H025-L1N | KTD0621-0501C0101 | KAN0441C-0252B1 | KAN0644-0371C1-A | Compatibility / risk |
|---|---|---|---|---|---|
| Application | tactile SPST-NO | tactile SPST-NO | tactile SPST-NO | tactile SPST-NO | tactile SPST-NO — same function; KAN0441C-0252B1: same function; KAN0644-0371C1-A: same function |
| Voltage | 12V | 16V | 12V | 12V | 16V / 12V — higher rating; KAN0441C-0252B1: same rating; KAN0644-0371C1-A: same rating |
| Current | 50mA | 50mA | 50mA | 50mA | 50mA — same rating; KAN0441C-0252B1: same rating; KAN0644-0371C1-A: same rating |
| Package | SMD 5.0x2.9x2.5 | SMD 6x6x5 | SMD 2.5mm high | 6x6x3.7 | SMD 6x6x5 / SMD 2.5mm high / 6x6x3.7 — larger body; KAN0441C-0252B1: height aligns; KAN0644-0371C1-A: larger and taller |
| Pinout | 2 pins | missing | missing | 4 pins | missing / 4 pins — verify pads; KAN0441C-0252B1: verify pads; KAN0644-0371C1-A: not pin match |
Application & sourcing insights
Questions & answers
KTD0621-0501C0101 is the best functional candidate, but its larger body and pinout need review.