The EVQ-P9P02M is a compact tactile switch from Panasonic Industry designed for electronic devices that require dependable momentary switching in a small footprint. As a member of the EVQP9 series, this component combines surface-mount construction, a short travel distance, and a defined operating force. These characteristics make it suitable for control panels, consumer electronics, portable equipment, and other PCB-based applications where space and reliable user input are important.
What Is the EVQ-P9P02M?
The EVQ-P9P02M is a non-illuminated, top-actuated tactile switch with an SPST normally open circuit configuration. When the rectangular actuator is pressed, the switch closes the circuit momentarily and returns to its original state after the pressure is released. This makes it useful for functions such as button input, menu navigation, reset controls, mode selection, and other low-current user-interface operations.
According to distributor specifications, the component uses a surface-mount design with J-lead terminals. Its body measures approximately 4.7 mm by 3.5 mm, while the actuator height from the PCB is approximately 2.1 mm. Its compact dimensions allow designers to incorporate tactile controls without consuming excessive board space.
Key Electrical Specifications
The EVQ-P9P02M is intended for low-current switching applications. Its listed contact rating is 20 mA at 15 VDC, making it appropriate for signal-level control rather than high-power switching. The SPST-NO configuration provides a straightforward electrical interface that can be connected to a microcontroller, control circuit, or other digital input.
The switch has a momentary OFF-(ON) function. In practical terms, the electrical connection is made while the actuator is pressed and released when the actuator is allowed to return. This behavior is particularly useful for push-button interfaces where a system needs to detect a user's individual action.
Mechanical Design and Operation
One important characteristic of the EVQ-P9P02M is its tactile feedback. The component has an operating force of approximately 500 gf, or about 5 N, and a switch travel of approximately 0.25 mm. This provides a noticeable response during operation while keeping the button movement short.
The top-actuated rectangular button is designed for direct vertical pressing. Its surface-mount format also supports automated PCB assembly, which can be valuable for manufacturers producing electronic devices at scale. Components supplied in tape-and-reel packaging can be integrated into automated pick-and-place production processes.
Durability and Environmental Performance
Reliability is an important consideration when selecting a tactile switch for equipment that may receive repeated user input. Distributor data lists the EVQ-P9P02M with a mechanical life of up to 200,000 cycles on DigiKey, while some distributor listings provide different life figures depending on their specification database. For production designs, engineers should therefore confirm the latest Panasonic datasheet and qualification requirements before final component selection.
The specified operating temperature range is approximately -40°C to +85°C. This broad range allows the switch to be considered for electronics exposed to relatively demanding ambient conditions, although the suitability of the complete device will depend on the other components and environmental requirements.
Potential Applications
Because of its compact construction and momentary switching behavior, the EVQ-P9P02M can be considered for a variety of electronic products. Potential applications include control interfaces, portable electronics, consumer devices, industrial control panels, instrumentation, and embedded systems.
For PCB designers, the small 4.7 mm × 3.5 mm footprint can be particularly useful when several buttons need to be placed close together. The top-actuation design also makes it practical for front-panel or membrane-interface arrangements where a button mechanism presses directly onto the switch actuator.
PCB Design Considerations
When integrating the EVQ-P9P02M into a circuit, engineers should verify the recommended PCB footprint, terminal arrangement, actuator clearance, and mechanical alignment using the latest manufacturer documentation. Electrical designers should also confirm that the connected circuit remains within the switch's voltage and current ratings.
Because tactile switches are mechanical components, designers should consider switch bounce when connecting the device to digital electronics. Depending on the application, software debounce or an appropriate hardware filtering method may be used to ensure that one physical button press is interpreted correctly by the control system.
Conclusion
The EVQ-P9P02M provides a compact solution for momentary push-button control in space-conscious electronic designs. Its SPST normally open configuration, top actuation, J-lead surface-mount construction, short travel, and defined tactile operating force make it a practical option for many PCB-based interfaces. With an operating temperature range extending from -40°C to +85°C and a compact 4.7 mm × 3.5 mm body, it offers a useful combination of size, functionality, and design flexibility.