🚀 go-pugleaf

On Sat, 18 Apr 2009 16:33:43 +0100, Eeyore wrote:
> "David L. Jones" wrote:
>> "Eeyore" <rabbitsfriendsandrelations@hotmail.com> wrote
>> > "David L. Jones" wrote:
>> >
>> >> Here is what happens when you try and reflow cheap OneHungLow brand
>> >> header
>> >> connectors:
>> >
>> > Who does your purchasing or sub-contracting ? OneHungLow indeed !
>>
>> Mostly in-house purchasing, but I don't know who's responsible for this
>> one. We usually use Samtec headers.
> 
> Never had a problem with Samtec for sure. Sometimes engineers have to
> fight a battle with purchasing. I foresaw a problem with a particular
> component on a �750,000 contract some 20 years ago and pressurised
> purchasing in the presence of board members to give extra lead time for
> these, since we hadn't ordered that specific model in ages.
> 
> Did they ? Hell no ! It resulted in the ONE problem with project
> completion, dealines and in-field reliability.

Many years ago, I worked for a plastics extruder, who got a contract to 
make the plastic things that the customer then stuffed with pins. They
searched for WEEKS to find a plastic that could be extruded for less than
a king's ransom, yet still meet fire specs. The term 94V0 springs to mind,
but I couldn't swear to it. The plastic wasn't glass-filled - it was some
variety of vinyl, IIRC, but nothing was ever said about melting in service;
it was extruded at about 450 F, at which temp. it was still quite stiff.

The customer was happy with the result, but these were through-hole
headers, if that has anything to do with it.

Cheers!
Rich