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The M34 is a low voltage single output LED flashing controller IC that can drive several LEDs simultaneously (max current 25mA). The IC has an in-built RC oscillator circuit, so requires minimum external components.

  • M34-1 has a flash rate of 1Hz
  • M34-2 has a flash rate of 2Hz
  • The device is designed for a 3V DC supply
  • Housed in a TO-92 package

Product details Hints & Tips









Manufacturer’s Part Number: M34-1

M34-1(3332-01)led Flasher Chip 1hz


In stock, despatched same day

Manufacturer’s Part Number: M34-2

M34-2(3322) LED Flasher (2hz)


In stock, despatched same day

Technical Specification

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LED Flashing Controller IC (34523)


Question by Martin Wood
11th November 2013

QI would like to create a flashing 1.8mm LED tail lamp on a model railway truck. I propose to power this with the coin cell type battery, (2 x 1.5v) will this unit work? I am also wishing to create a lvel crossing warning light with 2 alternate flashing LED's, could I also use this component?
AHi Martin, thanks for your question. This component can be used to make the LEDs flash. We also offer flashing LEDs which have the IC built in to make them flash independently: A 3mm version and 5mm version.

Question by Chris
9th February 2012

QThe data sheet shows this with the LED connected between LED and VDD will it drive an LED between LED and VSS eg can it source as well as sink ?
AHi Chris, this controller will only Sink current

Question by J | Product code: 82-0030
1st February 2012

QI need a chip IC similar to this except with a supply voltage of 11-13 V (12 V) Do you have this?
ANo, I'm afraid we do not currently stock anything that meets your requirements.

Question by Bob | Product code: 82-0030
17th November 2011

QI need a chip IC like this one to flash twice per second. Can you help?
AHi Bob Thanks for your question. Unfortunately we do not have a IC that will work at this rate.


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