Continue to Site

Welcome to our site!

Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

transistor selection question

Status
Not open for further replies.

Alez87

New Member
Hi,

I have a standard 2N4401 transistor.

a low voltage input on the Base pin.
Emitter pin to ground.
and a 15~20V input on the Collector pin with a load.

I have a 500mA draw from this circuit.

upon removing the transistor and applying the 15~20V directly to the load, I have 2A draw.

I want as much current as possible to my load. What kind of transistor can I use?
I need a transistor that can take high voltage input
(up to 100-200V and let up to 5A pass)
 
a low voltage input on the Base pin.
More data!

Go to digikey.com or anyone that has parts.
In the search window "transistor". Results=more or less millions of options.
Click on "BJT single" =21,000 parts
Click on NPN hit Apply = 10,000 parts
Select 5 to 6A = 711 parts
Select 100 to 200 volts = 118 parts
Active only parts = 59 parts
"more filters" Choose gain 100 to 200 so we only see higher gain parts. =29 parts.

You might start out with "transistor Darlington". That will give you transistors with much higher gain.
 
Status
Not open for further replies.

Latest threads

New Articles From Microcontroller Tips

Back
Top