transistor ON 724 PHILIPS

[ut-norm]

Hi do you know the characteristics of this transistor? Thanks for the reply

[ut-norm]

Re: transistor ON 724 PHILIPS

The title is wrong, the marking is:ON 724
I apologize for the mistake

[R_J]

Re: transistor ON 724 PHILIPS

What is it used in? Make , Model, maybe you have a schematic? I see this is not a picture of your component

[petehall347]

Re: transistor ON 724 PHILIPS

maybe email philips and ask them for a datasheet

[redwire]

Re: transistor ON 724 PHILIPS

I found nothing on ON724 Philips transistor, it must be a house number as Philips power transistors are usually prefixed BU, BUS, BUZ etc.
Did see same "date code" on a BUS14A. OP's pic looks like a clone from aliexpress but store 15814935579 does not exist.
BUY72-4 has "724" as vert. defl. tranny.

[sam_sam_sam]

Re: transistor ON 724 PHILIPS

I found something that says that it is a mosfet but I could not find a data sheet for it

[ut-norm]

Re: transistor ON 724 PHILIPS

Thank you for your prompt replies. The ON724 is mounted in an old oil burner control board that works well. Unfortunately, I no longer have that board. I'll see if I can post a photo. I just wanted to know the features of this component not having found the datasheet. The electronics of this card are very dated. In addition to the ON724 there is another transistor but in a TO5 container that starts with ON but I don't remember the rest of the initials.
I found this link on the net

https://www.jotrin.com/product/parts/ON724

[R_J]

Re: transistor ON 724 PHILIPS

I agree, it is likely a custom/in house number for the company that made the controller

[redwire]

Re: transistor ON 724 PHILIPS

For an oil burner controller, the only specialty power transistor that I can think of would be for the igniter. In the mid-80's a high voltage Darlington was used like old MJ10012, BU941ZPFI
The ones with built-in clamp zener are best for when the spark gap gets too big, the transistor is protected.

Unless the burner board uses CDI HV inverter or mains for the ignition?
The fuel solenoid valve does not need that much current.