« previous next »
Pages: [1]   Go Down

Author Topic: How does this heatsink mate with a to-220?  (Read 3504 times)

0 Members and 1 Guest are viewing this topic.

Offline ChaiTopic starter

  • Regular Contributor
  • *
  • Posts: 50
  • Country: ca
How does this heatsink mate with a to-220?
« on: February 14, 2017, 06:33:53 pm »
The bolt hole isn't drilled.

Logged
 

Offline Karlo_Moharic

  • Regular Contributor
  • *
  • Posts: 100
  • Country: hr
Re: How does this heatsink mate with a to-220?
« Reply #1 on: February 14, 2017, 06:39:24 pm »
Could you give me a bit more information about heatsink?
Logged
 

Offline danadak

  • Super Contributor
  • ***
  • Posts: 1875
  • Country: us
  • Reactor Operator SSN-583, Retired EE
Re: How does this heatsink mate with a to-220?
« Reply #2 on: February 14, 2017, 06:40:53 pm »
Some are designed with spring metal U clip that presses tab against heat sink.

See attached.


Regards, Dana.
« Last Edit: February 14, 2017, 06:43:34 pm by danadak »
Logged
Love Cypress PSOC, ATTiny, Bit Slice, OpAmps, Oscilloscopes, and Analog Gurus like Pease, Miller, Widlar, Dobkin, obsessed with being an engineer
 

Offline ChaiTopic starter

  • Regular Contributor
  • *
  • Posts: 50
  • Country: ca
Re: How does this heatsink mate with a to-220?
« Reply #3 on: February 14, 2017, 06:41:18 pm »
Logged
 

Offline ChaiTopic starter

  • Regular Contributor
  • *
  • Posts: 50
  • Country: ca
Re: How does this heatsink mate with a to-220?
« Reply #4 on: February 14, 2017, 06:44:55 pm »
Got it from digikey and there was no clip included.



Logged
 

Offline Mr.B

  • Supporter
  • ****
  • Posts: 1237
  • Country: nz
Re: How does this heatsink mate with a to-220?
« Reply #5 on: February 14, 2017, 06:57:54 pm »
As danadak says; there is a metal U clip required.
The hole of the TO-220 device sits over the 'pimple' sticking out of the heatsink and the spring clip secures the device to the heatsink.
Absolutely a spring clip is required.

Similar to the shot below.
« Last Edit: February 14, 2017, 07:00:07 pm by Mr.B »
Logged
I approach the thinking of all of my posts using AI in the first instance. (Awkward Irregularity)
 

Offline free_electron

  • Super Contributor
  • ***
  • Posts: 8517
  • Country: us
    • SiliconValleyGarage
Re: How does this heatsink mate with a to-220?
« Reply #6 on: February 14, 2017, 07:28:45 pm »
Quote from: Mr.B on February 14, 2017, 06:57:54 pm
As danadak says; there is a metal U clip required.
The hole of the TO-220 device sits over the 'pimple' sticking out of the heatsink and the spring clip secures the device to the heatsink.
Absolutely a spring clip is required.

Similar to the shot below.

<-THIS
Logged
Professional Electron Wrangler.
Any comments, or points of view expressed, are my own and not endorsed , induced or compensated by my employer(s).
 

Offline ChaiTopic starter

  • Regular Contributor
  • *
  • Posts: 50
  • Country: ca
Re: How does this heatsink mate with a to-220?
« Reply #7 on: February 14, 2017, 07:35:23 pm »
Ah ok! It is normal practice to not include the clips with the heatsink?  :-//

« Last Edit: February 14, 2017, 07:39:20 pm by Chai »
Logged
 

Offline SeanB

  • Super Contributor
  • ***
  • Posts: 16284
  • Country: za
Re: How does this heatsink mate with a to-220?
« Reply #8 on: February 14, 2017, 07:53:17 pm »
Yes, as you can order a few versions of the heatsink, but there is only one clip style.
Logged
 

Offline ChaiTopic starter

  • Regular Contributor
  • *
  • Posts: 50
  • Country: ca
Re: How does this heatsink mate with a to-220?
« Reply #9 on: February 14, 2017, 07:59:18 pm »
All good now. Thanks everyone



Logged
 

Offline Wollvieh

  • Contributor
  • Posts: 26
  • Country: de
Re: How does this heatsink mate with a to-220?
« Reply #10 on: February 15, 2017, 01:29:11 am »
The picture is not too detailed, but could it be the hole is already prepunched? So you just pop it out with a rusty nail and an old shoe, if drilling is no alternative.
Logged
 

Offline T3sl4co1l

  • Super Contributor
  • ***
  • Posts: 21688
  • Country: us
  • Expert, Analog Electronics, PCB Layout, EMC
    • Seven Transistor Labs
Re: How does this heatsink mate with a to-220?
« Reply #11 on: February 15, 2017, 04:40:48 am »
Could also be a mis-struck part.

Though, that pip on the back would be an awfully convenient grab point for a spring clip!

You wouldn't want to have to drill through it BTW -- you can do it a few times, but the anodize finish will punish drills; it's hard even on carbide tooling.

Tim
Logged
Seven Transistor Labs, LLC
Electronic design, from concept to prototype.
Bringing a project to life?  Send me a message!
 

Offline ChaiTopic starter

  • Regular Contributor
  • *
  • Posts: 50
  • Country: ca
Re: How does this heatsink mate with a to-220?
« Reply #12 on: February 15, 2017, 10:49:05 pm »
Quote from: T3sl4co1l on February 15, 2017, 04:40:48 am
Could also be a mis-struck part.

Though, that pip on the back would be an awfully convenient grab point for a spring clip!

You wouldn't want to have to drill through it BTW -- you can do it a few times, but the anodize finish will punish drills; it's hard even on carbide tooling.

Tim

Bought 4. All the same. It's clip to nip like others have said.
Logged
 

Offline mmagin

  • Frequent Contributor
  • **
  • Posts: 610
  • Country: us
Re: How does this heatsink mate with a to-220?
« Reply #13 on: February 16, 2017, 01:37:08 am »
Quote from: T3sl4co1l on February 15, 2017, 04:40:48 am
Could also be a mis-struck part.

Though, that pip on the back would be an awfully convenient grab point for a spring clip!

You wouldn't want to have to drill through it BTW -- you can do it a few times, but the anodize finish will punish drills; it's hard even on carbide tooling.

Tim

Looks like it is correct, from the drawing:
Logged
 
Pages: [1]   Go Up
« previous next »

Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf

 


EEVblog Main Site EEVblog on Youtube EEVblog on Twitter EEVblog on Facebook EEVblog on Odysee