KLJ-8530-3627 SMD Active Magnetic Buzzer
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Prices updated: 12 Oct 2026
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About this product
KLJ-8530-3627 is an active magnetic buzzer in a compact SMD package for small battery-powered devices such as smart home controllers, handheld electronics and scanners. It produces a loud sound when powered and is usually driven through a MOSFET or transistor from a microcontroller pin. It is a space-saving replacement for traditional through-hole buzzers.
Specifications
- Buzzer type
- Active magnetic
- Mounting
- SMD (surface mount)
- Drive method
- MOSFET or transistor driven from microcontroller
- Typical use
- Compact battery-powered devices
Frequently asked questions
How do I drive it from a microcontroller?
Do not connect it directly to a GPIO pin. Switch it with a MOSFET or NPN transistor, connect the buzzer between the supply and the switch, and add a flyback diode across the buzzer when using a MOSFET. The listing also states that varying the input signal can change the tone.
What operating voltage does it need?
The listing does not state a rated voltage. Check the manufacturer datasheet for the rated voltage before connecting it, because running an active buzzer above its rating can damage it.
