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By cdeAugust 13, in General Electronics.
Took it apart 320 the batteries in it rusted out, and had to clean the contacts. Saw that the center leg for the transistor was also rusted through. Not knowing the IR led drop voltage, I can’t tell what the current should be. Side note, found http: PN would be a reasonable replacement.
RF Datasheet, PDF – Alldatasheet
The pinout is different, so you will have to carefully bend the leads to go to the correct PCB pad. The Vf of an IR led is typically 1. Orf current could be close to 1 A in that irc.
That throws me off too. But the transistor has a max current of ma. The pn is stated as max ma. That’s probably constant current numbers instead of toggle, but neither look like they would fit Actually, the is 1a max.
IRF3205 MOSFET. Datasheet pdf. Equivalent
With a similar hfe. Now to find one. See that’s the thing. I suck at figuring out transistors, and I thought the hfe was the important part. The IR led is typically rated at 1. The continuous current is much lower – typ 50 to mA.
MOSFET Transistors – IRF Series
Hfe beta is important, exactly how important depends on the application. As a general rule, higher is better but not always. An oscillator or amplifier is a more sensitive application than a switch. OnSemi’s verson of the PNA. I might as well hit up ebay for some. And then throw the extra in my parts box. You need to be a member in order to leave a comment. Sign up for a new irv in our community. Already have an account? General Electronics Search In.
Replacement transistor for c? Posted August jrf, I need to replace a transistor on the remote control for an old radio boombox. It was a kec c npn transistor. From the circuit I am repairing, the important part is a simple transistor as a switch circuit. Share this post Link to post Share on other sites.
Posted August 14, Doesn’t tandy own RS? Sorry Taydaelectronics Box was a stretch, but you can get a lot of good stuff at a very reasonable price there.
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