Favorite High-Voltage BJT Power Trannies

Hi Win, nice to know someone who is a winner! My best thoughts here are NTE, and Digikey.

That said, have you considered IGBTs? I realize you mentioned only .5A.

You also said it would be nice if they were complimentary, NPN, PNP, and I assume it is not mandatory. NTE has some nice Video output transistors, (for antique CRT drivers),lol. They are only NPN.

My experience with Digikey tech assistance was exemplary! I needed high power surface mount MOSFETS, voltage, current, speed, and they gave me 3 choices which only left one: price. You didn't say if this was a one time project, or a prototype with plans for production. This isn't an advertisement, but they can give you excellent assistance, provided you know your parimeters, and then can deliver high volume at a reasonable price.

One more thought, when I'm at the deli, undecided, they often offer a free sample.

Don't forget to ask about quantity pricing, if it's a project which will use thousands or tens of thousands of this product...I'm preaching to the chior!

I like the 2SD646. 50 amps at 600 volts. I'm thinking a class A boutique amp. Sorry, no PNP complement.

Very nice, what's not to like? Up at 4am, checking the status of another calculation, this gave me a chuckle.

I'll see your elegant bolt, and raise you a sot-227 package.

Well then, how about 100 amps at 700 volts?

Take a look a the older 2N5830, but be very aware of the safe operating area. They will withstand up to 100V st substantial currents. Unlike others that advertise a high Ft like Fairchild,. this one lives up to it for real signals in the real world. If you can live with somewhat lower voltages and speeds, the older RCA "hometaxial" series (2N3771 and higher voltage counterparts are very rugged. Why are not you using a FET circuit? No storage time, little or no real secondary breakdown, etc.

BernieK

Most (if not all) semiconductor manufacturers have powerful parameter search engines built into their company product web pages now days that will allow you to do a quick find and side-by-side comparison (especially if you want matching pairs).

Just enter the data, choose some candidates and head to the website or catalog of the bulk component supplier of your choice (RS, Digikey, Farnell, etc) for pricing and availability.

Toshiba and Fairchild Semiconductor still make some triple diffused bjt.

2SC5242 (NPN), 2SA1962 (PNP) 250V, 17A, 30 MHz

2SC5200 (NPN), 2SA1943 (PNP) 250V, 17A, 30 MHz

FJA4310 (NPN), FJA4210 (PNP) 200V, 10A, 30 MHz