JRE Productions

2520 transistors...bd139/140
« on: January 26, 2006, 11:50:03 PM »
Trying to figure out which to buy for the BD140/139.  Here is the mouser page.  There is a large difference in price

http://www.mouser.com/?Ne=500&handler=data.listcategory&Ntt=*bd140*&terms=bd140&crc=true&N=571&Ns=SField

I also can not find anything for TIS98, TIS97 and SKA 4693.  This is for the 2520 R1 boards. Do I need to search for these differently?

Thanks for any help.

Joe


JRE Productions

2520 transistors...bd139/140
« Reply #1 on: January 27, 2006, 12:06:42 AM »
Sorry but I have one more question.  BD135/136

http://www.mouser.com/index.cfm?&handler=data.listcategory&D=*bd135*&terms=bd135&Ntt=*bd135*&Dk=1&Ns=SField&N=0&crc=true

I see some just state BD135 and others have 16STU at the end.

I'm so confused!

Joe

Samuel Groner

    Zürich, Switzerland
  • Posts: 2935
2520 transistors...bd139/140
« Reply #2 on: January 27, 2006, 03:04:55 AM »
Quote
Trying to figure out which to buy for the BD140/139.

I recommend the BD14016S or BD14016STU. Didn't check the difference between these, but likely just packaging.

The 16 at the end means it is the highest hfe class which is a good thing. BTW, that's all in the datasheet, worth a look usually...

The MMBD1401 stuff is not suitable--as you can see, they have not the required TO-126/SOT-32 footprint.

Quote
I also can not find anything for TIS98, TIS97 and SKA 4693.

Did you read all info here about this discret opamp? I'm sure that's been answered. These are antique transistors, you'll not find them. I have not studied this project but IIRC they use the BC550C/BC560C.

Samuel

JRE Productions

2520 transistors...bd139/140
« Reply #3 on: January 27, 2006, 10:08:03 AM »
Thanks.  Yes I read the spec sheets, but at this point they do not mean very much to me.  The more questions I ask, the more I read the better I will be at answering my own questions. So I appreciate you patients and willingness to help a guy out!

joe

Samuel Groner

    Zürich, Switzerland
  • Posts: 2935
2520 transistors...bd139/140
« Reply #4 on: January 27, 2006, 10:23:14 AM »
You're welcome--good luck with your 2520! :thumb:

Samuel


 

Related Topics

  Subject / Started by Replies Last post
9 Replies
5151 Views
Last post February 10, 2006, 01:29:17 AM
by peterc
8 Replies
5688 Views
Last post September 27, 2013, 09:40:50 AM
by DerEber
UTC LS 140

Started by CJ The Lab

5 Replies
3605 Views
Last post October 15, 2009, 09:30:56 AM
by EmRR
5 Replies
1727 Views
Last post September 21, 2011, 04:42:59 PM
by dirtyhanfri