MR-28406-000

Microphones Overview

The Knowles MR-28406-000 is an omnidirectional electret condenser microphone designed for analog audio applications. It operates at a supply voltage of 1.3 V with a rated current of 50 uA. The device features a sensitivity of -60 dBA and an impedance of 3.5 kOhms. Its physical dimensions are 0.871 inches in diameter (22.12 mm) with a depth of 7.6 mm, utilizing wire lead termination.

Microphones Feature Summary

• Omnidirectional acoustic pattern for uniform sound capture
• Low power consumption suitable for battery-operated devices
• Compact cylindrical form factor with wire leads

Microphones Applications

• Portable consumer electronics
• Voice recording devices
• Telecommunication equipment

Microphones Procurement Notes

Verify component status as the MR-28406-000 is listed as obsolete and no longer in production. Confirm availability through authorized distributors or secondary markets. Ensure compatibility with existing circuit designs requiring 1.3 V operation and wire-lead mounting before procurement.

Microphones Selection Notes

Select this component for applications requiring a small, low-power omnidirectional microphone. Consider the specific 1.3 V operating voltage and wire-lead termination when designing PCB layouts. Evaluate alternative models if long-term supply stability is required due to its discontinued status.

Microphones Part Context

This microphone belongs to the MR series from Knowles, focusing on compact analog audio sensing solutions. It serves as a specialized component for integrating voice input capabilities into space-constrained electronic systems without requiring complex digital interfaces.

Microphones Replacement Considerations

The WP-23502-P16 is identified as a similar available substitute. Verify electrical parameters and mechanical fitment against original design requirements before substitution.