AUM-5247L-C3310-R

Overview

The AUM-5247L-C3310-R is a unidirectional electret condenser microphone manufactured by PUI Audio. It features an integrated buzz-blocking capacitor network consisting of 33pF and 10pF capacitors to reduce GSM interference. The device operates on a supply voltage range of 1.5V to 2VDC with a current consumption of 500µA. Key electrical parameters include a sensitivity of -47dB±3dB, an output impedance of 680 ohms, and an acoustic overload point of 110dB. The physical dimensions are 9.7mm in diameter and height, with a depth of 5.2mm.

Feature Summary

• Integrated 33pF and 10pF buzz-blocking capacitors designed to mitigate GSM noise interference
• Unidirectional polar pattern for focused sound capture
• Low power consumption suitable for battery-operated portable devices

Applications

• Mobile phones and smartphones requiring GSM noise reduction
• Portable electronic devices with limited power budgets
• Voice recording equipment needing high acoustic overload tolerance

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status via the official datasheet before integration. Ensure supply chain stability as availability may vary. Validate that the specific suffix C3310 matches the required integrated capacitor configuration for your design.

Selection Notes

Select this model when GSM noise suppression is critical for audio clarity in mobile applications. The 680-ohm impedance and -47dB sensitivity suit standard preamplifier inputs. Consider the 500µA current draw against total system power constraints. Verify mechanical fit within the 9.7mm x 9.7mm x 5.2mm envelope.

Part Context

This component belongs to the PUI Audio AUM series of microphones. It is specifically engineered for consumer electronics where electromagnetic interference from cellular networks is a concern. The integrated capacitor solution distinguishes it from standard unidirectional microphones lacking built-in filtering.

Replacement Considerations

Direct substitutes must match the 680-ohm impedance, -47dB sensitivity, and integrated 33pF/10pF capacitor configuration. Generic unidirectional microphones without buzz-blocking capacitors will not provide equivalent GSM noise performance.