3SM123C4T1VA-R

Overview

The 3SM123C4T1VA-R is an analog MEMS microphone manufactured by 3S (Solid State System). It features a silicon-based omnidirectional acoustic design with a frequency range of 100 Hz to 10 kHz. The device delivers a sensitivity of -42 dB ±1 dB at 94 dB SPL. It utilizes a top-port configuration and supports surface-mount technology, enduring reflow temperatures up to 260°C for 30 seconds. Dimensions are 2.75 x 1.85 x 0.90 mm.

Feature Summary

• Top port design for omnidirectional sound pickup
• High stability with no risk of membrane aging
• Compatible with automatic pick-and-place handlers and SMT processes

Applications

• Consumer electronics audio input
• Voice recognition systems
• Smart home devices

Procurement Notes

Verify the specific ordering suffix and package variant against the manufacturer's latest datasheet before procurement. Confirm that the component meets the required reflow temperature profile for your assembly line. Ensure the top-port orientation aligns with the mechanical enclosure design to maintain specified acoustic performance.

Selection Notes

Select this component when an omnidirectional analog MEMS microphone is required for space-constrained applications. The small footprint and SMT compatibility make it suitable for automated manufacturing environments. Consider the -42 dB sensitivity and 10 kHz upper frequency limit for standard voice band applications.

Part Context

This part belongs to the 3S MEMS series of microphones produced by Solid State System Co., Ltd. The company specializes in silicon-based acoustic sensors. This specific model represents a surface-mount solution designed for integration into portable and stationary electronic devices requiring reliable analog audio capture.

Replacement Considerations

Direct substitutes include the 3SM123E4T1VA-002-R from the same manufacturer. Verify pinout and dimensional compatibility before swapping. Cross-model replacements require validation of sensitivity and frequency response alignment.