Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

2n3393 transitor equivalent?

Status
Not open for further replies.

neazoi

Advanced Member level 6
Joined
Jan 5, 2008
Messages
4,119
Helped
13
Reputation
26
Reaction score
15
Trophy points
1,318
Location
Greece
Activity points
36,918
what is the modern transitor equivalent of the 2n3393? if faster, even better.
 

if faster, even better
Do you have a speed specification for the original type? Or a target specification for the replacement?
 
  • Like
Reactions: neazoi

    neazoi

    Points: 2
    Helpful Answer Positive Rating
Mouser has 1,100 in stock at $.14 each.

John
 
  • Like
Reactions: neazoi

    neazoi

    Points: 2
    Helpful Answer Positive Rating
Recommended replacements: BC168/183/238/548

As per Japanese International Transistor Comparison Tables - Tech Publications PTE.Ltd.
 
Last edited:
  • Like
Reactions: neazoi

    neazoi

    Points: 2
    Helpful Answer Positive Rating
Recommended replacements: BC168/183/238/548
None of these has the 500 mA current rating to replace 2N3393. You better refer to the profound suggestion by mister_rf.
 
  • Like
Reactions: neazoi

    neazoi

    Points: 2
    Helpful Answer Positive Rating
It is to be used in an analogue oscilloscope vertical and horizontal amplifier sections and also trigger sections. If a faster transistor is to be used I MAY be able to make this a little bit faster oscilloscope than 5MHz.
 

In this case, you should check the actual voltage and current rating required by the respective circuit and try a suitable faster transistor. Speed is a matter of all circuit parameters, not only transistor fT and capacitances. Furthermore placing a high speed transistor in a circuit not prepared for it may bring up oscillations.
 

Attachments

  • io-102 sch.JPG
    io-102 sch.JPG
    348.1 KB · Views: 65
  • Like
Reactions: FvM

    FvM

    Points: 2
    Helpful Answer Positive Rating
changing the 2N3393 transistor doesn’t help to much
I agree. The bandwidth limitation would be mainly located in the output amplifier that has to be possibly redesigned for a profound improvement. As a first step, you would want to get an overview of the present circuit's behaviour, either by a simulation, or even better, by a measurement.
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top