LS77A-H Through-Hole Tactile Push Button Switch
LS77A-H is a compact through-hole tactile switch with a 7.50 × 7.50 mm white square actuator cap. Its tall PCB-mount structure and momentary normally open contact make it suitable for control panels, appliances, instruments and other electronic equipment.
The four-terminal arrangement uses two internally common terminal pairs, providing stable PCB mounting and straightforward circuit integration. Please confirm the final electrical rating, operating force, travel, service life and material options against the approved specification before ordering.
Key Features
- Momentary SPST normally open switching function
- 7.50 × 7.50 mm square white actuator cap
- Through-hole PCB mounting
- Four terminals arranged as two internally common pairs
- Tall actuator profile for accessible panel operation
- Compact footprint for electronic control interfaces
Mechanical Details
| Model | LS77A-H |
|---|---|
| Product type | Tactile push-button switch |
| Contact function | Momentary SPST, normally open |
| Mounting method | Through-hole PCB mount |
| Actuator cap | 7.50 × 7.50 mm square cap |
| Terminal arrangement | Four terminals; two internally common pairs |
| Dimensions | Refer to the technical drawing; all dimensions are in mm |
Typical Applications
- Household appliances
- Industrial control panels
- Test and measurement equipment
- Consumer electronics
- Power supplies and electronic instruments
Ordering Support
Send ERI your required quantity, target application and technical requirements for specification confirmation, samples and bulk quotation.







