And not that anyone really cares, but this approach to shorting the lands is also utilized when electrolytic plating isolated leads. Either that or caging the leads, which is likely even more common, but potentially harmful to the glass to metal seals...
Would not make a good pin 1 indicator. The 'ear/tab' is there, likely hidden behind a lead in the images. Probably a soft spring-grade stainless. Definitely pull before test! Serious oops on their datasheet for not making mention of it
Steve C
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Steve Gregory
Sent: Friday, August 08, 2014 2:32 PM
To: [log in to unmask]
Subject: Re: [TN] Unusual part thingy....
Yeah Ed, that was my first idea, but we don't have any here small enough diameter to fit in the footprint. I think we're just going to hand solder them in...
Steve
On Fri, Aug 8, 2014 at 10:29 AM, Ed Popielarski <[log in to unmask]>
wrote:
> Dissopads
>
>
>
>
>
>
>
> Ed Popielarski
>
> Engineering Manager
>
>
>
> 970 NE 21st Ct.
>
> Oak Harbor, Wa. 98277
>
>
>
> Ph: 360-675-1322
>
> Fx: 206-624-0695
>
> Cl: 949-581-6601
>
>
>
> “It's one kind of victory to slay a beast, move a mountain, and
> cross a chasm, but it's another kind altogether to realize that the
> beast, the mountain, and the chasm were of your own design.”
>
>
> https://maps.google.com/maps/myplaces?hl=en&ll=48.315753,-122.643578&s
> pn=0.011188,0.033023&ctz=420&t=m&z=16&iwloc=A
>
>
>
> *From:* Steve Gregory [mailto:[log in to unmask]]
> *Sent:* Friday, August 08, 2014 8:59 AM
> *To:* Ed Popielarski
> *Cc:* TechNet E-Mail Forum
> *Subject:* Re: [TN] Unusual part thingy....
>
>
>
> Hi again all!
>
>
>
> Well, I have learned something this morning! But I learned something
> else too, this little jewel will have to be stood up a little somehow
> because the footprint is such that it will drop down flush to the
> board and then have a possibility of the case shorting to the pads:
>
>
>
> http://stevezeva.homestead.com/SD211DE_Footprint.jpg
>
>
>
> There's no insulator called out in the BOM, and worse yet, these parts
> have already been prepped without taking into account a stand-off
> height for the part......(heavy sigh). Well I suppose if there wasn't
> problems, I wouldn't have a job.....('nuther heavy sigh)
>
>
>
> Steve
>
>
>
> On Fri, Aug 8, 2014 at 9:23 AM, Ed Popielarski
> <[log in to unmask]>
> wrote:
>
> Old school ESD protection. We're talking about '70s stuff here. Remove
> it in an ESD protected environment and throw it away. It's a dead
> short between leads and should not be soldered in place.
>
> Ed Popielarski
> Engineering Manager
>
>
> 970 NE 21st Ct.
> Oak Harbor, Wa. 98277
>
> Ph: 360-675-1322
> Fx: 206-624-0695
> Cl: 949-581-6601
>
> “It's one kind of victory to slay a beast, move a mountain, and
> cross a chasm, but it's another kind altogether to realize that the
> beast, the mountain, and the chasm were of your own design.”
>
> https://maps.google.com/maps/myplaces?hl=en&ll=48.315753,-122.643578&s
> pn=0.011188,0.033023&ctz=420&t=m&z=16&iwloc=A
>
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Steve Gregory
> Sent: Friday, August 08, 2014 8:08 AM
> To: [log in to unmask]
> Subject: [TN] Unusual part thingy....
>
> Morning All,
>
> One of my inspectors was doing a first article inspection on a board
> and came to me with a question about a transistor that is on the
> board, it's this one here:
>
>
> http://www.futureelectronics.com/en/technologies/semiconductors/discre
> tes/transistors/mosfets/Pages/3792082-SD211DE.aspx?IM=0
>
> She was asking me what this little wire thingy is on the leads of the
> part, I said I didn't know...I have never seen something like this before.
> I'm thinking that it may be some sort of stand-off that you slide up
> and down the leads depending on how high you want the part to be stood
> up off the board, but I'm not sure. The datasheet doesn't say anything
> about it, and like I said, this is the first time I've seen this (okay, I've lead a
> sheltered life... ;^) )
>
> So what is this thingy?
>
> http://stevezeva.homestead.com/SD211DE.jpg
>
> Steve
>
> --
>
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