
GANGYUAN
KTD0621-0501C0101 is a same-role SMD tactile option needing layout review.
TS-1010-C-A is a 2-pin SMD SPST-NO tactile switch. Listed alternates need FAE review because pinout or mechanics are not proven.
kept parts meet 50mA and 12V where listed
pinout or footprint not verified
no firmware interface
some lifecycles are '-'
No pin-compatible replacement is proven from the provided data.
Start with KTD0621-0501C0101, then verify footprint, height, travel, and pinout.
Mechanical fit and pin compatibility.

GANGYUAN
KTD0621-0501C0101 is a same-role SMD tactile option needing layout review.
| Feature / factor | TS-1010-C-A | KTD0621-0501C0101 | KAN0441C-0252B1 | KAN0644-0371C1-A | Compatibility / risk |
|---|---|---|---|---|---|
| Application | tactile | tactile | tactile | tactile | tactile — same switch type; KAN0441C-0252B1: same role; KAN0644-0371C1-A: same switch type; KAN4541-0381B1: same type |
| Interface | SPST-NO | SPST-NO | SPST-NO | SPST-NO | SPST-NO / missing — same circuit; KAN0441C-0252B1: same circuit; KAN0644-0371C1-A: same circuit; KAN4541-0381B1: not listed |
| Voltage | 12V | 16V | 12V | 12V | 16V / 12V — higher rating; KAN0441C-0252B1: same rating; KAN0644-0371C1-A: same rating; KAN4541-0381B1: same rating |
| Current | 50mA | 50mA | 50mA | 50mA | 50mA — same current; KAN0441C-0252B1: same rating; KAN0644-0371C1-A: same rating; KAN4541-0381B1: same rating |
| Pinout | 2 pins | missing | missing | 4 pins | missing / 4 pins — not verified; KAN0441C-0252B1: not verified; KAN0644-0371C1-A: no pin match; KAN4541-0381B1: no pin match |
| Temperature | -30..85C | -40..90C | missing | - | -40..90C / missing — covers target; KAN0441C-0252B1: not listed |
KTD0621-0501C0101 is the strongest same-role candidate, but it still needs footprint and pinout review.