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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：66dB
- Impedance：200 Ohms
- Voltage Range：-
- Current - Supply：80 µA
- Port Location：Bottom
- Ratings：-
- Termination：Surface Mount
- Size / Dimension：0.148" L x 0.118" W (3.76mm x 3.00mm)
- Height (Max)：0.047" (1.20mm)
- Shape：Rectangular
- Grade：-
- Qualification：-
- Voltage - Rated：-
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Overview
The 3SM121MZB1UA is an analog MEMS microphone manufactured by 3S (Solid State System). It utilizes silicon-based technology and features an omnidirectional acoustic pattern. The device operates within a frequency range of 100 Hz to 10 kHz. Its sensitivity is specified at -38dB ±1dB relative to 94dB SPL. The component is designed for surface mount installation, ensuring compatibility with automated assembly processes.
Feature Summary
- Omnidirectional acoustic response for consistent sound capture from all directions
- MEMS silicon construction providing high-quality analog output signals
- Surface mount package design suitable for compact electronic assemblies
Applications
- Consumer audio recording devices
- Voice recognition systems
- Portable communication equipment
Procurement Notes
Verify the specific ordering suffix to ensure correct packaging and tape-and-reel specifications. Confirm that the analog output type matches the target circuit interface requirements. Check for any environmental qualification certifications required for the intended deployment scenario before finalizing procurement orders.
Selection Notes
Choose this component when an omnidirectional analog MEMS microphone is required for space-constrained designs. The flat frequency response supports applications demanding accurate audio reproduction. Ensure the power supply voltage and interface impedance align with the host system's audio processing unit capabilities.
Part Context
This part belongs to the 3SM12 series of MEMS microphones produced by Solid State System Co., Ltd. The manufacturer specializes in CMOS-based MEMS technologies. This series includes various models with different output types and package configurations, catering to diverse consumer electronics needs.
Replacement Considerations
Direct substitutes include other 3SM121 series variants such as 3SM121PZB1MB or 3SM121LZB1HA, provided they match the required output type and package dimensions. Verify pinout compatibility and electrical characteristics before swapping components.
