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2~5v 4000HZ Hot Sell SMD Electronic Magnetic Buzzer 80db Surface Mount 5.0*3.0mm Magnetic Buzzer

TAT BM5030S-0340-12 5.0×3.0mm SMD Electromagnetic Buzzer 4000Hz 2~5Vo-p 80dB Surface Mount Buzzer

BM5030S-0340-12 is a compact passive surface-mount electromagnetic buzzer from TAT. With footprint size 5.0×3.0mm, it is designed for automatic SMT pick-and-place and reflow soldering. This magnetic buzzer requires square wave drive signal and outputs stable 4000Hz alert tone. Compared with piezo buzzers, electromagnetic buzzers deliver softer and smoother sound, widely adopted as audio indicators on compact printed circuit boards.

Model:
BM5030S-0340-12
Brand:
TAT
Code:
BM5030S-0340-12

Style:	SMD Electro-magnetic buzzer
Rated Voltage:	3Vo-p
Operating Voltage:	2-5Vo-p
Rated Current:	Max.100mA,at 4000HZ
Sound Output at 10cm:	Min. 80dB,at 4000HZ
Coil Resistance:	12±2Ω
Resonant Frequency:	4000Hz
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Product Description

Key Features

Passive electromagnetic buzzer, driven by square wave signal
Resonant Frequency: 4000Hz
Rated Voltage: 3.0 Vo-p; Operating Voltage: 2.0~5.0 Vo-p
Rated Current: Max.100mA @3.0Vo-p, 4000Hz, 50% duty square wave
Sound Pressure Level: Min.80dB at 10cm
Coil Resistance: 12 ±2Ω
Small SMD outline: 5.0×3.0mm, net weight approx 0.3g
Housing: Black LCP, high heat resistance for reflow process
Terminal: Tin plating brass pads with polarity mark and dummy pad
Operating Temperature: -30℃ ~ +70℃; Storage: -40℃ ~ +85℃
RoHS compliant for global electronic products

Technical Specification

Item	Specification	Test Condition
Rated Voltage	3.0 Vo-p	-
Operating Voltage	2.0~5.0 Vo-p	-
Rated Current	Max.100 mA	3.0Vo-p, 4000Hz, 50% duty square wave
Sound Output	Min.80 dB @10cm	3.0Vo-p, 4000Hz, 50% duty square wave
Coil Resistance	12±2 Ω	-
Resonant Frequency	4000 Hz	-
Operating Temperature	-30℃ ~ +70℃	-
Storage Temperature	-40℃ ~ +85℃	-
Net Weight	Approx 0.3 g	-
Housing Material	Black LCP	-
Terminal Plate	3 soldering pads, tin plating brass	-
Environmental Standard	RoHS	Yes

Application

This SMD electromagnetic buzzer works as audio indicator for compact electronics:

1. IoT sensor modules

2. Small household appliances

3. Industrial instruments & meters

4. Portable electronic devices

5. Control board & smart modules

6. Low-noise reminder systems

Custom & Order Service

Tape & reel packaging for automatic SMT assembly
Samples available for acoustic and reliability testing
Custom options: resonant frequency, coil resistance, laser marking
Datasheet, RoHS certificate and inspection report available on request

FAQ

Q: Is this electromagnetic buzzer active or passive? A: It is passive magnetic buzzer. Square wave signal input is required; it cannot work directly with DC voltage.

Q: What is the difference between magnetic buzzer and piezo buzzer? A: Electromagnetic buzzers produce softer, less sharp sound; piezo buzzers normally have higher dB and sharper tone.

Q: Can this buzzer go through reflow soldering? A: Yes. LCP housing material can withstand standard SMT reflow temperature profile.