is a TO3 case better? - Page 2

pinkmouse · 15th March 2008, 09:14 AM

T03s look nicer.

djQUAN · 15th March 2008, 01:26 PM

I have seen gold plated all metal TO-220 devices for military use. forgot where I saw them though. definitely expensive!!

jol50 · 15th March 2008, 09:35 PM

The STK-xxx big ICs seem to work ok, they could make them like that if it was an issue. In reality many new amps have less heatsink anyway...I assume due to more efficient transistors that emit less heat?

TheMG · 15th March 2008, 10:03 PM

The amount of heat dissipated has very little to do with the transistor, it's all about how it is implemented in the circuit and the type of biasing used, as well as the efficiency of the design.

peranders · 15th March 2008, 10:25 PM

I have used 330 W rated TO220 and my opinion here is the if the transistor is going to dissipate much power you must be careful with the mounting technique. How many TO3 are out with 330 W rating? One way to get good mounting is to use springs, not screws.

Workhorse, a blow transistor at 90 deg C, the working conditions wasn't perfect. Maybe mounted in the wrong way.

EWorkshop1708 · 16th March 2008, 04:29 AM

It would be nice if transistors came in more colors. Like different colors for different grades or something. Or just because it looks cool. Capacitors come in many colors, it would be nice if plastic transistors were the same way.

I use to see green every so often, but not anymore. Most are black.

TheMG · 16th March 2008, 06:43 AM

Nothing a little paint can't do!

jacco vermeulen · 16th March 2008, 10:45 AM

You like it dirty, hey ?

(i kinda still fancy chromed steel bumpers)

Workhorse · 16th March 2008, 01:06 PM

Quote:

Originally posted by peranders
Workhorse, a blow transistor at 90 deg C, the working conditions wasn't perfect. Maybe mounted in the wrong way.

Its your assumption only!!!

peranders · 16th March 2008, 01:09 PM

What was the reason then, according to you?

15th March 2008, 09:14 AM	#11
pinkmouse diyAudio Moderator Join Date: Apr 2002 Location: Chatham, England	T03s look nicer. __________________ Al I conceive of nothing, in religion, science or philosophy, that is more than the proper thing to wear, for a while. Charles Fort

15th March 2008, 10:25 PM	#15
peranders Electrons are yellow and more is better! diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden Blog Entries: 4	I have used 330 W rated TO220 and my opinion here is the if the transistor is going to dissipate much power you must be careful with the mounting technique. How many TO3 are out with 330 W rating? One way to get good mounting is to use springs, not screws. Workhorse, a blow transistor at 90 deg C, the working conditions wasn't perfect. Maybe mounted in the wrong way. __________________ /Per-Anders (my first name) or P-A as my friends call me

16th March 2008, 01:09 PM	#20
peranders Electrons are yellow and more is better! diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden Blog Entries: 4	What was the reason then, according to you? __________________ /Per-Anders (my first name) or P-A as my friends call me

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
B&C Sub, ATI case	ShinOBIWAN	Swap Meet	2	15th October 2006 10:34 PM
What to use for a case ????	la9	Chip Amps	3	22nd August 2004 04:34 AM
DIY Case	dhole	Pass Labs	9	15th August 2004 03:47 PM
case	theChris	Parts	2	8th February 2003 09:08 PM


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

15th March 2008, 01:26 PM	#12
djQUAN diyAudio Member Join Date: May 2004 Location: manila	I have seen gold plated all metal TO-220 devices for military use. forgot where I saw them though. definitely expensive!!

15th March 2008, 09:35 PM	#13
jol50 diyAudio Member Join Date: Nov 2007	The STK-xxx big ICs seem to work ok, they could make them like that if it was an issue. In reality many new amps have less heatsink anyway...I assume due to more efficient transistors that emit less heat?

15th March 2008, 10:03 PM	#14
TheMG diyAudio Member Join Date: Jan 2008	The amount of heat dissipated has very little to do with the transistor, it's all about how it is implemented in the circuit and the type of biasing used, as well as the efficiency of the design.

16th March 2008, 04:29 AM	#16
EWorkshop1708 diyAudio Member Join Date: Nov 2004 Location: Florida	It would be nice if transistors came in more colors. Like different colors for different grades or something. Or just because it looks cool. Capacitors come in many colors, it would be nice if plastic transistors were the same way. I use to see green every so often, but not anymore. Most are black.

16th March 2008, 06:43 AM	#17
TheMG diyAudio Member Join Date: Jan 2008	Nothing a little paint can't do!

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read