3SM121F4T1UE

Overview

The 3SM121F4T1UE is a MEMS silicon microphone manufactured by Solid State System Co., Ltd. It operates within a supply voltage range of 1.6 V to 3.6 V and features an omnidirectional acoustic port configuration. The device delivers a sensitivity of -42 dB ±1 dB at 94 dB SPL, with a frequency response spanning from 100 Hz to 10 kHz. It utilizes solder pads for termination, ensuring direct integration onto printed circuit boards without the need for additional connectors.

Feature Summary

• Omnidirectional acoustic design for uniform sound capture
• Low voltage operation compatible with portable electronics
• MEMS silicon construction for high reliability

Applications

• Mobile communication devices
• Portable audio recorders
• Consumer electronic gadgets

Procurement Notes

Verify the specific suffix T1UE against official datasheets to confirm package and tape/reel specifications. Ensure compatibility with existing PCB footprints and reflow profiles. Cross-reference manufacturer part numbers to avoid substitution errors during assembly.

Selection Notes

Select this component when low power consumption and flat frequency response are required. Compare sensitivity levels against application noise floors. Verify operating voltage ranges match system power rails. Assess physical dimensions for space-constrained designs.

Part Context

Solid State System Co., Ltd. specializes in NAND flash and MEMS technologies. This microphone belongs to their analog output series, designed for mobile storage and consumer electronics. The company leverages extensive experience in semiconductor manufacturing to produce reliable acoustic sensors.

Replacement Considerations

Consult official substitution lists for equivalent MEMS microphones. Verify pinout compatibility and sensitivity matching before replacing. Check for identical package dimensions to ensure mechanical fit.