Can anyone identify this insulating material please?

[357]

Well another order and another try.
I re-flowed the mosfets and rectifier leads cause I was struggling and some got moved a bit and looked a bit cracked.
Just got to pull the trigger on some pads and try again in a few days.


Thanks for all of your advice guys.

 

[Handy Andy]

If they are "pre-adhesive" - go for it - looks like the sizes you need too.

Remember that they are perfed - meaning the hole will need to align - so if they get "inserted" and slide off - the slightest burr on one edge in to the anodized aluminum they may be toast. These are made for drill thrus'.

 

[357]

If they are "pre-adhesive" - go for it - looks like the sizes you need too.

Remember that they are perfed - meaning the hole will need to align - so if they get "inserted" and slide off - the slightest burr on one edge in to the anodized aluminum they may be toast. These are made for drill thrus'.

Ya I couldn't find 900 series with no hole for to247
I got the to220 no hole but see for yourself: https://www.digikey.ca/products/en/...402&quantity=&ColumnSort=0&page=1&pageSize=25

I seen the Wakefield-Vette ones but they seem super thin to me.
0.076mm vs 0.229mm

https://www.digikey.ca/product-detail/en/wakefield-vette/CD-02-05-220-N/345-1687-ND/9369966

https://www.digikey.ca/product-detail/en/wakefield-vette/CD-02-05-247-N/345-1688-ND/9369967

https://www.digikey.ca/product-detail/en/wakefield-vette/CD-02-05-REC-125-N/345-1703-ND/9369982

Maybe these are made of the same thing the original ones were.

I'm not sure which one to pick.
I cant believe how much this stuff costs either.
I could probably buy the actual components for less.

 

[Handy Andy]

Went looking - see above, used the Adhesive back and then hit apply filters - these have adhesive backing so you can get these to work as long as it sticks to the back of the parts.

There will be clearance issues so I can see why they went with typical "onion skin" like you'd find on the transformers...

But Teflon Tape is also a stuff used for electrical insulation too

 

[357]

OK I think I can use these:
https://www.digikey.ca/product-deta...25-2A/1168-1815-ND/3466725/?itemSeq=273158752

And these:
https://www.digikey.ca/product-detail/en/SP900S-0.009-00-43/BER174-ND/307796/?itemSeq=272972062

Now that I found I dont have to slide the board and just drop it in, I can just lay these down and drop the board on them.

 

[Handy Andy]

I also noticed that the heads and nuts - looks like they fit the channel.

Can you use a spot glue or nail polish to hold these parts in place? {the nuts I'm referring to] and place the board on top once the bolts or nuts are properly aligned? I'm thinking the nuts to the channel and just "washers" to press against the top part of the plate to hold the flange to the parts due to the length of the shaft of the bolt - this way the nut when it goes tight - the washer and bolt itself also adds to the spreader effect. The Nut then is your friction "brake" to keep the heat sink aligned.

I'm thinking that if - as part of assembly - one or two nuts of both ends of the board can be done this way - the rest should fall into place pretty easily.

I've used piano - fish wire - to slide the nuts onto heat sink channels in a similar design - PITA - so I know what you're going thru - some have even needed the heat sink "goo" to hold the nut in place and helped quicken the assembly. I'm just providing hints to help you get thru this.

I've had the wonderful job of dealing with backplane cages from some older video games that instead of one board they were caged and had "shared" heat sink assemblies that you had to insert and extract both cards evenly so you didn't torgue off the parts or shift them and wind up with a mess of pieces versus two boards.

 

[357]

Got a package today.
Can anyone see a problem?

https://www.digikey.ca/product-deta...DC0019-01-L37-3F-0.25-2A/1168-1815-ND/3466725




Is that hole going to make my thermal contact, suck?

 

[Handy Andy]

Uh oh, they feel asleep at the parts bin again.

Man it's hard to find good help these days...

UN-REAL....

Sigh...

 

[357]

The picture on digikey is misleading.
They dont say what rectifier but in the application guide it shows the hole.

I didn't want to go there but its time for zero phucks.
Just gonna reuse the old ones and trim off the parts with holes, rips and thin pressure spots.
I cut the pieces as I held them to a light and its gonna have to do.
I spent a few days digging through pdf's looking for a replacement and now I'm done.
It's the Canadian way to just say phuck it

Dollar store super glue was that call of the day on the nuts. Same on the big caps

 

[Handy Andy]

NICE!