could someone help me out a bit with equivalent transistors ?
I think that getting the right ones is one of the problems i've been having. is their a standard? how do i know whats what? are their going to be minor differences that are going to mess up my radio circuits?
also more importantly does anyone know if the NTE 2N4401 527 is equivalent to the bc548?
Each transistor number has a datasheet that details many of its max allowed voltages, max allowed current and its current gain. Also its max frequency is listed.
The 2N4401 has a max allowed collector-emitter voltage of 40V and the BC548 has only 30V.
The max allowed collector current for the 2N4401 is 600mA and the BC548 is only 100mA.
The current gain of a 2N4401 at a collector current of 10mA is typically 195 and the BC548 is about 250.
The max oscillator frequency for the 2N4401 is 250MHz and the BC548 is 150MHz.
So you can see that the two transistors are quite different.
Odd..I got 18 results and the page says on it, "Replace part" "with NTE part"
and several variations of BC548 are listed.
I think you did something wrong with the search page.
I don't think NTE makes anything. They buy other manufacturer's transistors, stamp their own part number and raise the price 4 times higher.
It is a rip-off.
The store in your town sell them because then their profit is 4 times higher than if they sold "normal" parts.
Odd..I got 18 results and the page says on it, "Replace part" "with NTE part"
and several variations of BC548 are listed.
I think you did something wrong with the search page.
I don't think NTE makes anything. They buy other manufacturer's transistors, stamp their own part number and raise the price 4 times higher.
It is a rip-off.
The store in your town sell them because then their profit is 4 times higher than if they sold "normal" parts.