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PKM22EPPH4002-B0
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Product Detailed Parameters
- Description：BUZZER PIEZO 1.5V 22MM TH
- Series：PK
- Mfr：Murata Electronics
- Package：Bulk
- Driver Circuitry：Transducer, Externally Driven
- Input Type：Zero-Peak Signal
- Frequency：4kHz
- Technology：Piezo
- Operating Mode：Single Tone
- Duration：-
- Sound Pressure Level (SPL)：75dB @ 1.5V, 10cm
- Current - Supply：-
- Port Location：Top
- Operating Temperature：-20°C ~ 70°C
- Approval Agency：-
- Ratings：-
- Ingress Protection：-
- Mounting Type：Through Hole
- Termination：PC Pins
- Height - Seated (Max)：0.343" (8.70mm)
- Voltage - Rated：1.5 V
- Voltage Range：30V (Max)
- Size / Dimension：0.866" Dia (22.00mm)
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Overview
The PKM22EPPH4002-B0 is a piezoelectric sounder manufactured by Murata Electronics, designed for through-hole mounting on printed circuit boards. This externally driven transducer operates at a fixed frequency of 4 kHz and delivers a sound pressure level of 75 dB when driven at 1.5 V. The component features PC pin termination and has a maximum seated height of 8.7 mm with a diameter of 22 mm. It functions within an operating temperature range of -20°C to +70°C and complies with RoHS standards.
Feature Summary
- Externally driven piezoelectric transducer requiring external oscillator circuits
- Fixed frequency operation at 4 kHz for consistent audio signaling
- Through-hole PC pin termination for secure board mounting
- RoHS compliant construction for environmental safety
Applications
- General purpose audible alarms in consumer electronics
- Status indication in industrial control panels
- Security system sirens and warning devices
- Appliance operational feedback signals
Procurement Notes
Verify the specific suffix B0 against official Murata documentation to confirm exact acoustic and electrical tolerances. Confirm that the design requires an external drive signal, as this unit lacks an internal generator. Check for end-of-life status or obsolescence notices from the manufacturer before finalizing procurement plans.
Selection Notes
Select this component when a fixed 4 kHz tone is required without internal driving complexity. Ensure the application can provide the necessary external drive voltage and current. Compare dimensions against available PCB space, noting the 22 mm diameter and 8.7 mm height constraints.
Part Context
This part belongs to the Murata PKM22EPP series of piezoelectric buzzers. These components are distinct from self-exciting types as they require an external square wave input. The series offers various frequencies and sound pressure levels for different alerting needs.
Replacement Considerations
Direct substitutes include other Murata PKM22EPP variants with matching 4 kHz frequency and similar form factors. Verify that replacement parts maintain the same 75 dB SPL at comparable drive voltages and fit the existing through-hole footprint.
