On 4/15/12 3:46 AM, Attila Kinali wrote:
CA3130EZ is the lead-free version of the part. Looks like good stock
(both Newark and Avnet have thousands on the shelf), and should be
usable unless you're sending it into space or something.
Why is the chip case being lead free a problem for space?
I thought the major issue was that the solder is lead free and
showes all kinds of nasty behaviour?
Attila Kinali
Tin whiskers
Rather than tin-lead solder dip, it's typically pure tin on the leads,
and that's evil. You can take the part and redip the leads, but that's
a pain.
Yeah, the solder requires better temperature control, but most stuff for
space is done with automated processes and dialing in the temperature
profiles for arbitrary solder isn't that hard.
On 4/15/12 3:46 AM, Attila Kinali wrote:
> On Sat, 14 Apr 2012 20:11:14 -0500
> hoag@hiwaay.net wrote:
>
>> CA3130EZ is the lead-free version of the part. Looks like good stock
>> (both Newark and Avnet have thousands on the shelf), and should be
>> usable unless you're sending it into space or something.
>
> Why is the chip case being lead free a problem for space?
> I thought the major issue was that the solder is lead free and
> showes all kinds of nasty behaviour?
>
> Attila Kinali
Tin whiskers
Rather than tin-lead solder dip, it's typically pure tin on the leads,
and that's evil. You can take the part and redip the leads, but that's
a pain.
Yeah, the solder requires better temperature control, but most stuff for
space is done with automated processes and dialing in the temperature
profiles for arbitrary solder isn't that hard.
