
SHOU HAN
Shares the same footprint and pin count but is taller and has a shorter lifecycle. Requires mechanical and reliability review.
The XUNPU TS-1009S-03826 is a popular 4.5x4.5mm SMT tactile switch. Finding a direct drop-in replacement requires matching its 3.8mm height, 4-pin layout, and 2.6N actuation force.
Most candidates have incorrect mounting type or height.
Electrical ratings are generally consistent.
No direct pin-to-pin replacement was found in this batch. All candidates have critical differences in mounting type, height, or actuation style.
Filter for 4.5x4.5mm SMT tactile switches with a 4-pin layout, height between 3.5-4.0mm, and operating force of 250-270gf.
The primary risk is mechanical incompatibility due to different mounting styles (SMT vs. THT) or component height.

SHOU HAN
Shares the same footprint and pin count but is taller and has a shorter lifecycle. Requires mechanical and reliability review.
| Feature / factor | TS-1009S-03826 | TS4565TP | Alt 2 | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 4.5mm x 4.5mm | 4.5mm x 4.5mm | 4.5mm x 4.5mm — Footprint matches. | ||
| Mounting Type | Surface Mount (SMT) | SMD (inferred) | SMD (inferred) — Mounting type not explicitly listed, inferred from part number. Requires datasheet verification. | ||
| Height | 3.8 mm | 6.5 mm | 6.5 mm — Significantly taller, may cause mechanical interference. | ||
| Mechanical Life | 100,000 cycles | 50,000 cycles | 50,000 cycles — Candidate has half the operating life. | ||
| Operating Force | 2.6 N (~265 gf) | 250 gf | 250 gf — Operating force is a close match. |
Currently, no ideal alternative has been identified. The closest functional matches often differ in mounting type (through-hole) or height, requiring board or mechanical design changes.