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Product Detailed Parameters
- Description：ANALOG MIC/BOTTOM PORT/SEN -38DB
- Series：3S MEMS
- Mfr：3S (Solid State System)
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：MEMS (Silicon)
- Output Type：Analog
- Direction：Omnidirectional
- Frequency Range：100 Hz ~ 10 kHz
- Sensitivity：-38dB ±1dB @ 94dB SPL
- S/N Ratio：65dB
- Impedance：200 Ohms
- Voltage Range：-
- Current - Supply：80 µA
- Port Location：Bottom
- Ratings：-
- Termination：Surface Mount
- Size / Dimension：0.138" L x 0.104" W (3.50mm x 2.65mm)
- Height (Max)：0.043" (1.08mm)
- Shape：Rectangular
- Grade：-
- Qualification：-
- Voltage - Rated：-
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Overview
The 3SM121LZB1HA is a MEMS silicon microphone manufactured by Solid State System Co., Ltd. It features an analog output type and an omnidirectional sound pickup pattern. The device operates within a frequency range of 100 Hz to 10 kHz. Its sensitivity is specified as -38dB ±1dB at 94dB SPL. The component utilizes a surface mount package with dimensions of 3.50mm x 2.65mm.
Feature Summary
- Omnidirectional acoustic design for uniform sound capture
- Analog signal output interface
- MEMS silicon construction
Applications
- Audio recording devices
- Voice recognition systems
- Consumer electronics audio input
Procurement Notes
Verify the specific suffix codes against official datasheets to confirm exact electrical tolerances and packaging configurations. Ensure compatibility with existing PCB footprints, as dimensions are 3.50mm x 2.65mm. Confirm analog output requirements match system input impedance. Cross-reference manufacturer documentation for RoHS compliance status before integration.
Selection Notes
Select this component when an analog output MEMS microphone is required for compact designs. The 100 Hz to 10 kHz frequency range suits voice-centric applications. The -38dB sensitivity provides standard output levels. Consider the surface mount form factor for automated assembly processes in small form factor devices.
Part Context
Solid State System Co., Ltd. (3S) was founded in 1998 and is recognized for expertise in NAND flash memory and mobile storage media. While primarily known for storage solutions, the company also produces MEMS components such as microphones. This product line leverages their semiconductor manufacturing capabilities.
Replacement Considerations
Consult official substitution lists from Solid State System Co., Ltd. for verified equivalents. Ensure replacement parts maintain identical analog output characteristics and physical dimensions of 3.50mm x 2.65mm. Verify that sensitivity and frequency response specifications remain compatible with the original design requirements.
