The PKM11-4A0 MOD Murata Piezoelectric Sounder is a compact surface-mount (SMD) external drive piezoelectric transducer designed for space-constrained electronic devices, embedded systems, portable equipment, medical instruments, consumer electronics, and industrial applications. Manufactured by Murata, this high-quality sounder provides reliable audible output while maintaining an ultra-low-profile design.

Designed for external drive operation, the PKM11-4A0 MOD requires an external square wave or audio signal, allowing complete control over tone generation, pulse patterns, and alert sequences through a microcontroller or dedicated driver circuit. Operating at a resonant frequency of 4kHz, it delivers a sound pressure level of 75dBA, providing clear and efficient audible indication for status alerts and warning notifications.

The compact 12 × 12 × 3mm package features gullwing SMD terminals, making it ideal for automated PCB assembly and high-density electronic designs. With a maximum drive voltage of 25V DC, the sounder is suitable for a wide range of low-power electronic applications.

The PKM11-4A0 MOD is an excellent choice for OEM manufacturers, embedded system designers, and electronics engineers requiring a reliable, compact, and high-quality surface-mount audio transducer.

Features

• Genuine Murata piezoelectric sounder
• External drive operation
• Surface-mount (SMD) package
• Compact low-profile design
• Resonant frequency of 4kHz
• 75dBA sound output
• Maximum drive voltage of 25V DC
• Gullwing terminals for automated PCB assembly
• Low power consumption
• High reliability and long service life

Specifications

• Part Number: PKM11-4A0 MOD
• Manufacturer: Murata
• Product Type: Piezoelectric Sounder
• Drive Type: External Drive
• Mounting Type: Surface Mount (SMD)
• Terminal Style: Gullwing
• Maximum Drive Voltage: 25V DC
• Sound Output: 75dBA
• Resonant Frequency: 4kHz
• Dimensions: 12mm × 12mm × 3mm

Applications

• Embedded electronic systems
• Portable electronic devices
• Medical equipment
• Consumer electronics
• Industrial control equipment
• Alarm and notification systems
• Handheld instruments
• IoT devices
• OEM electronic products
• Microcontroller and embedded development projects

What's in the box
1 x PKM11-4A0 MOD Murata SMD Piezo Sounder External Drive 4kHz 12x12mm