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=srchrtrv&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=ref_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&cad=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
>>>
>>> --
>>>
>>>
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>>
>
> -- 
>
>
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