I know what you mean, Jon.
It's annoying. This Darlington, when developing maximum dissipation, needs,
not only the stud, but also thick leads for cooling. The best you can find
today is probably Fairchild's version. Their leads are 0.5x08 mm in
crossection. The old ones from MOTA had double the size. Pioneer use very
robust TIPs 220, probably Japanese made, but I don't remember from whom.
This lowering of robustness and quality is what is called 'John Burke's
anatema'.
Inge
-----Ursprungligt meddelande-----
Från: TechNet [mailto:[log in to unmask]] För Stadem, Richard D.
Skickat: den 26 februari 2008 22:40
Till: [log in to unmask]
Ämne: Re: [TN] TIP-122 in the TO-220 package
got it. not familiar with this part, sorry.
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Jon McDowell
Sent: Tuesday, February 26, 2008 1:48 PM
To: [log in to unmask]
Subject: Re: [TN] TIP-122 in the TO-220 package
Mac
This is a copy of the email I sent to the Technet, let me know if you
got it. I have not gotten any responses as yet but will monitor
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Jon McDowell
Sent: Tuesday, February 26, 2008 10:45 AM
To: [log in to unmask]
Subject: [TN] TIP-122 in the TO-220 package
Hello Technetters
We use the ST microelectronics TIP-122 in the TO-220 package. We
suddenly started receiving a different variant of the TO-220 package,
with very weak and flimsy leads. Has anyone else encountered this? What
if any standards should these leads meet. Preliminary investigation show
ST changed from a mfg facility in Morocco to one in China.
Thank You
Jon McDowell
ECCO
Phone: (208) 395-8025
Cell: (208) 602-0777
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