What the difference between TO-220AB and TO-247AC?

Vladco · 4th September 2011, 09:33 PM

What the difference between TO-220AB and TO-247AC packages? Power handing or other for DIY? Or they pretty much interchangeable?
Vlad

discrete · 4th September 2011, 10:03 PM

TO-247: Higher power, physically ~1/3 bigger, double the lead spacing, isolated mounting hole.

nigelwright7557 · 4th September 2011, 10:40 PM

I use to247AC for high power amps.
The to220 arent up to it for class A or class AB higher power amps.

You can get away with to220 for class d amps in pairs upto 500watts.

Vladco · 5th September 2011, 01:08 AM

Thank you guy for the replays.
So if specified TO220 I could use TO247 if it's phisically fit. I don't care about leg bending.
Is it TO247 electrically insulated from heatsink on the back? If yes it'll make my life easier.
Also I didn't find different power handling for different packages for the same mofets. Probably I looked in the wrong place.
Vlad

nigelwright7557 · 5th September 2011, 01:15 AM

Quote:

Originally Posted by Vladco

Is it TO247 electrically insulated from heatsink on the back? If yes it'll make my life easier.

Vlad

The tab is connected to the drain so you need insulating washers.

It might be hard to fit a to247 into a t220 pcb holes as one is 0.1" and the other is 0.2" spacing.

4th September 2011, 09:33 PM	#1
Vladco diyAudio Member Join Date: Apr 2003 Location: Denver	What the difference between TO-220AB and TO-247AC? What the difference between TO-220AB and TO-247AC packages? Power handing or other for DIY? Or they pretty much interchangeable? Vlad

4th September 2011, 10:40 PM	#3
nigelwright7557 diyAudio Member Join Date: Apr 2008 Location: Carlisle, England	I use to247AC for high power amps. The to220 arent up to it for class A or class AB higher power amps. You can get away with to220 for class d amps in pairs upto 500watts. __________________ http://www.murtonpikesystems.co.uk PCBCAD40 pcb design software.

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
Difference...	vdeki	Digital Source	1	16th February 2010 05:57 AM
is there a difference?	moray james	Everything Else	91	11th November 2009 09:23 PM
What's the difference?	squirtacious	Tubes / Valves	4	23rd October 2007 04:38 AM
difference between 1 and 2	androtaker56	Car Audio	9	14th November 2005 12:36 PM
TO-247AC Protel library....	sianturi	Pass Labs	3	5th March 2003 10:02 AM

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


	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

4th September 2011, 10:03 PM	#2
discrete diyAudio Member Join Date: Sep 2010	TO-247: Higher power, physically ~1/3 bigger, double the lead spacing, isolated mounting hole.

5th September 2011, 01:08 AM	#4
Vladco diyAudio Member Join Date: Apr 2003 Location: Denver	Thank you guy for the replays. So if specified TO220 I could use TO247 if it's phisically fit. I don't care about leg bending. Is it TO247 electrically insulated from heatsink on the back? If yes it'll make my life easier. Also I didn't find different power handling for different packages for the same mofets. Probably I looked in the wrong place. Vlad

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