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SFN-3840-0520 AI Analysis:
Datasheet, Specs, Alternatives & ECAD

AI summary

SFN-3840-0520 product

SFN-3840-0520

Speakers

PiezoelectricBuzzer40kHzUltrasonic

The SFN-3840-0520 is a 40kHz piezoelectric passive buzzer suitable for ultrasonic applications, featuring a 20Vrms max voltage and 85dB sound output.

Best for

  • Ultrasonic signaling
  • Proximity sensing

Avoid if

  • Applications requiring high-temperature environments above 70°C

Check before use

  • Drive signal waveform and voltage levels

Key specifications

Resonant Frequency
40 kHz
Max Voltage
20 Vrms
Sound Output
≥85 dB
Capacitance
110 nF

Compliance & Environment

RoHS
RoHS
REACH
-
MSL
-
ECCN
-
HTSUS
-

Application

Ultrasonic sensing

Datasheet

d78b16bbb45d3b8e5f53aadb2e92d9e8_2106062312_S-S-SFN-3840-0520_C2693579.pdf

800 KB

Datasheet AI

CAD Models

Download ECAD models for SFN-3840-0520: KiCad symbol & footprint, Altium footprint, PCB footprint, and 3D model.

EDA Symbol
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PCB Footprint
Land pattern for PCB layout
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3D Model
STEP file for mechanical design
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Where to Buy

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Alternative components

Alternatives are being enriched. Analyze this part in PartGenie for the latest matches.

Design and risk insights

Questions & answers

It is a passive piezoelectric buzzer designed for ultrasonic frequency operation at 40kHz.