Good Morning Doug,
I get the same gist, but it it just doesn't make sense. They say in the
bulletin that the lubrication separates and leeches from the body if you
bake at J-STD-33 temperature of 125 C. and Grayhill wants you to reduce
that to 60 C., but yet it's okay if you reflow it at 260 C., and if you do
see oil it's okay because it has no impact on solderabilty, impact on the
long term reliability of the switch, or any components around the switch,
so what's the point of baking it anyway? Like I said, this is the first
time I've ever seen any DIP switch rated at a MSL3 level....that's usually
reserved for components like QFP's and BGA's. The packaging we get the
switch from Grayhill in, is in tubes and not in a MBB. Oh well, what do I
know?
Steve
On Tue, Jan 8, 2019 at 6:13 AM Douglas Pauls <[log in to unmask]> wrote:
> Steve,
> I read this notice that the switch is not really moisture sensitive, it
> just can't take the heat it used to. No doubt, they switched to a cheaper
> plastic and cheaper lubricant that can't take the heat that the previous
> versions could. At least that is my take on it.
>
> *Douglas Pauls *| Principal Materials and Process Engr | Advanced
> Operations Engineering
>
> *COLLINS AEROSPACE*
>
> 400 Collins Road NE, MS 108-101, Cedar Rapids, IA 52498 USA
>
> *Tel:* +1 319 295 2109 | *Mobile: *+1 319 431 3773
>
> [log in to unmask]
>
>
> On Mon, Jan 7, 2019 at 12:39 PM Steve Gregory <[log in to unmask]> wrote:
>
>> Hi All,
>>
>> We just got this from Grayhill:
>>
>>
>> https://urldefense.proofpoint.com/v2/url?u=http-3A__download.siliconexpert.com_pdfs_2018_12_30_15_39_57_231320_grh-5F_manual_grayhill-5F1312-5F12302018-5F.pdf&d=DwIFaQ&c=ilBQI1lupc9Y65XwNblLtw&r=lTRDjB8ojaf7ZaJ9DHeDAm7e-HFP9fxIkv6fRnV49HE&m=06qIACB7QYqRUGVTa-4jMah7AKPFnmYw_bNDJz3XWyQ&s=886sHvjLbMjwSR9aUp9d7gUo7lhyddV_gWX39_EO5zI&e=
>>
>> I have never heard of a DIP switch being moisture sensitive, they're
>> calling this an MSL3 part too?
>>
>> Do you think that this is a mistake?
>>
>> Thanks,
>>
>> Steve
>>
>> --
>> Steve Gregory
>> Kimco Design and Manufacturing
>> Process Engineer
>> (208) 322-0500 Ext. -3133
>>
>> --
>>
>>
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--
Steve Gregory
Kimco Design and Manufacturing
Process Engineer
(208) 322-0500 Ext. -3133
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