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From:
Ed Popielarski <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Ed Popielarski <[log in to unmask]>
Date:
Fri, 29 Jul 2016 15:00:03 +0000
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You are welcomed to send a few out here if needed. 



Ed Popielarski

Engineering Manager





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-----Original Message-----

From: TechNet [mailto:[log in to unmask]] On Behalf Of Steve Gregory

Sent: Thursday, July 28, 2016 3:34 PM

To: [log in to unmask]

Subject: Re: [TN] Prepping TO-5 can style Relay...



Hi again Joyce,



Just tried to x-ray it with our Glenbrook x-ray, we just don't have the juice to see through it...



Steve Gregory



On Jul 28, 2016 4:09 PM, "Yuan-chia Joyce Koo" <[log in to unmask]> wrote:



> opps, too quick... if you get a diode...wb could be a problem...

> On Jul 28, 2016, at 5:03 PM, Steve Gregory wrote:

>

> Hi Joyce!

>>

>> Yep, as far as I can tell. There isn't much of a datasheet for the 

>> relays that we are using, but it shares the same vibration and shock 

>> specs as the Teledyne relays, so that tells me that they are very similar:

>>

>>

>> http://www.te.com/commerce/DocumentDelivery/DDEController?Action=srch

>> rtrv&DocNm=PRMAC-26X&DocType=DS&DocLang=English

>>

>> Steve

>>

>>

>>

>> On Thu, Jul 28, 2016 at 2:18 PM, Joyce Koo <[log in to unmask]> wrote:

>>

>> something similar to this internally?  if there are wire bonds 

>> connect to

>>> the transient suppression diode, or some other tricky interconnect, 

>>> it might be...'

>>> http://www.teledynerelays.com/pdf/electromechanical/432.pdf

>>> steve, do you have internal construction x-ray image? TO-5 is very 

>>> strong seal using glass, interconnect using spot weld to the leads 

>>> may not be easy to damaged, depend upon how it constructed.  my 1.4 cents.

>>> http://www.teledynerelays.com/pdf/electromechanical/432.pdf

>>>

>>>  jk

>>> http://www.teledynerelays.com/pdf/electromechanical/432.pdf

>>>

>>>> Steve,

>>>> Do they have PROOF that bending the leads cause damage?

>>>> Bev

>>>>

>>>> -----Original Message-----

>>>> From: TechNet [mailto:[log in to unmask]] On Behalf Of Steve Gregory

>>>> Sent: Thursday, July 28, 2016 11:12 AM

>>>> To: [log in to unmask]

>>>> Subject: [TN] Prepping TO-5 can style Relay...

>>>>

>>>> Hi All,

>>>>

>>>> We're building a board for a customer that uses a 8-lead TO-5 style

>>>>

>>> relay.

>>>

>>>> The footprint on the board requires that the leads are spread out 

>>>> to a larger diameter circle than what diameter is when they come 

>>>> out of the body at the bottom of the relay. Here's the information 

>>>> for one of the relays, there are three others that are the same 

>>>> style:

>>>>

>>>>

>>>>

>>> http://www.digikey.com/product-search/en?lang=en&site=us&WT.z_cid=re

>>> f_findch

>>>

>>>> ips_standard&mpart=PRMAC-26X

>>>>

>>>> So we have a Simonds CLP274 lead processor with a die that matches 

>>>> the footprint on the PCB:

>>>>

>>>> http://stevezeva.homestead.com/Simonds_CLP274.jpg

>>>>

>>>> We insert the part which spreads the leads out, then step on the 

>>>> pedal

>>>>

>>> and

>>>

>>>> a guillotine style blade shears the leads off. I've used the prep 

>>>> unit many, many time before at previous employers without issues. 

>>>> The customer is saying that prepping the leads in this unit is 

>>>> damaging the relay. So now we are to pot the leads before prepping 

>>>> them with a 2-part epoxy

>>>>

>>> using

>>>

>>>> a tooling fixture as a mold for the epoxy, and the potted relay 

>>>> looks

>>>>

>>> like

>>>

>>>> this:

>>>>

>>>> http://stevezeva.homestead.com/Potted_Relay.jpg

>>>>

>>>> Has anybody ever heard of this Simonds unit damaging relays like this?

>>>>

>>> Has

>>>

>>>> anybody had to add potting to a relay like this? I can understand 

>>>> wanting to keep the leads coming straight out of the bottom of the 

>>>> body before making the bend to match the footprint on the board, 

>>>> but I think I can

>>>>

>>> use

>>>

>>>> a Bivar permanent spacer and slip it over the lead and accomplish 

>>>> the

>>>>

>>> same

>>>

>>>> thing. Something like this:

>>>>

>>>>

>>>>

>>> https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&ved=

>>> 0ahUKEwi

>>>

>>>> qk8zCt5bOAhWJ1IMKHebaCR8QFggxMAE&url=http%3A%2F%2Fwww.bivar.com

>>>>

>>> %2Fportals%2F

>>>

>>>>

>>>> 0%2Fproducts%2F616-070.pdf&usg=AFQjCNESVvvX6qOo_-0T94sAYNLP8AJ21Q&c

>>>> ad=rja

>>>>

>>>> Or even a nylon washer that matches the diameter of the lead 

>>>> pattern

>>>> (.200") coming out of the bottom of the relay. Potting this relay 

>>>> is

>>>>

>>> going

>>>

>>>> to be very time consuming and there's going to be a risk of getting 

>>>> the epoxy on the leads that will ruin the solderability of the 

>>>> part. I'm just trying to understand if it is truly the Simonds prep 

>>>> unit causing the damage, and if this really is, and easier way 

>>>> other than potting them to accomplish the same thing.

>>>>

>>>> Thanks all!

>>>>

>>>> Steve Gregory

>>>>

>>>> --

>>>>

>>>>

>>>> This email and any attachments are only for use by the intended

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>>>>

>>> proprietary

>>>

>>>> or otherwise private information. Any unauthorized use, 

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>>>> prohibited. If you have received this email in error, please notify 

>>>> the sender immediately and delete the original.

>>>>

>>>>

>>>

>> --

>>

>>

>> This email and any attachments are only for use by the intended

>> recipient(s) and may contain legally privileged, confidential, 

>> proprietary or otherwise private information. Any unauthorized use, 

>> reproduction, dissemination, distribution or other disclosure of the 

>> contents of this e-mail or its attachments is strictly prohibited. If 

>> you have received this email in error, please notify the sender 

>> immediately and delete the original.

>>

>

>



-- 





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