This is crazy. When we can't get parts, we design around what we can
find and buy a reel of 3000. Or so. Whatever package we can get.

Lots of old tin-lead-plated parts are available, but we're ROHS and
want to stay honest.

On Tue, 11 Oct 2022 17:13:39 -0700, John Larkin
<jlarkin@highland_atwork_technology.com> wrote:

>This is crazy. When we can't get parts, we design around what we can
>find and buy a reel of 3000. Or so. Whatever package we can get.
>
>Lots of old tin-lead-plated parts are available, but we're ROHS and
>want to stay honest.

What kind of leaded parts are availble that the ROHS parts are not as
available ?

boB

On 12/10/2022 1:13 am, John Larkin wrote:
> This is crazy. When we can't get parts, we design around what we can
> find and buy a reel of 3000. Or so. Whatever package we can get.
>
> Lots of old tin-lead-plated parts are available, but we're ROHS and
> want to stay honest.
>

I heard of outfits that strip the plating and replate - wonder how that
works if the leadframe plating extends under the epoxy!?

piglet

On Wednesday, 12 October 2022 at 09:45:14 UTC+1, erichp...@hotmail.com wrote:
> On 12/10/2022 1:13 am, John Larkin wrote:
> > This is crazy. When we can't get parts, we design around what we can
> > find and buy a reel of 3000. Or so. Whatever package we can get.
> >
> > Lots of old tin-lead-plated parts are available, but we're ROHS and
> > want to stay honest.
> >
> I heard of outfits that strip the plating and replate - wonder how that
> works if the leadframe plating extends under the epoxy!?
>
> piglet

Leadframes are selectively plated, so it should not be a problem.

John

On 12/10/2022 09:45, piglet wrote:
> On 12/10/2022 1:13 am, John Larkin wrote:
>> This is crazy. When we can't get parts, we design around what we can
>> find and buy a reel of 3000. Or so. Whatever package we can get.
>>
>> Lots of old tin-lead-plated parts are available, but we're ROHS and
>> want to stay honest.
>>
>
> I heard of outfits that strip the plating and replate - wonder how that
> works if the leadframe plating extends under the epoxy!?
>
> piglet
>

It used to be common practice in the high-temperature world to use a
couple of solder pots to replace the tin/lead with tin+ to get the
higher melting point.

Nowadays with component shortages, a worry is finding parts passed off
as lead-free when they're not.

--
Cheers
Clive

piglet wrote:
> On 12/10/2022 1:13 am, John Larkin wrote:
>> This is crazy. When we can't get parts, we design around what we can
>> find and buy a reel of 3000. Or so. Whatever package we can get.
>>
>> Lots of old tin-lead-plated parts are available, but we're ROHS and
>> want to stay honest.
>>
>
> I heard of outfits that strip the plating and replate - wonder how that
> works if the leadframe plating extends under the epoxy!?
>
> piglet
>
Who cares?

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510

http://electrooptical.net
http://hobbs-eo.com

On Tue, 11 Oct 2022 23:45:01 -0700, boB <boB@K7IQ.com> wrote:

>On Tue, 11 Oct 2022 17:13:39 -0700, John Larkin
><jlarkin@highland_atwork_technology.com> wrote:
>
>>This is crazy. When we can't get parts, we design around what we can
>>find and buy a reel of 3000. Or so. Whatever package we can get.
>>
>>Lots of old tin-lead-plated parts are available, but we're ROHS and
>>want to stay honest.
>
>
>What kind of leaded parts are availble that the ROHS parts are not as
>available ?
>
>boB

Lots. LM1117 and LM2941 for example.

On Wed, 12 Oct 2022 07:07:35 -0700, John Larkin
<jlarkin@highlandSNIPMEtechnology.com> wrote:

>On Tue, 11 Oct 2022 23:45:01 -0700, boB <boB@K7IQ.com> wrote:
>
>>On Tue, 11 Oct 2022 17:13:39 -0700, John Larkin
>><jlarkin@highland_atwork_technology.com> wrote:
>>
>>>This is crazy. When we can't get parts, we design around what we can
>>>find and buy a reel of 3000. Or so. Whatever package we can get.
>>>
>>>Lots of old tin-lead-plated parts are available, but we're ROHS and
>>>want to stay honest.
>>
>>
>>What kind of leaded parts are availble that the ROHS parts are not as
>>available ?
>>
>>boB
>
>Lots. LM1117 and LM2941 for example.

We use thos types of parts and still an unleaded non-RoHS
manufacturing process but I thought most of our parts were RoHS leads.

At least I know that RoHS lead parts work fine in a non-RoHS product
line. I was under the impresion that since RoHS parts works fine
with lead solder that everything was RoHS these days.
Guess not !

boB

On Wed, 12 Oct 2022 12:12:28 -0700, boB <boB@K7IQ.com> wrote:

>On Wed, 12 Oct 2022 07:07:35 -0700, John Larkin
><jlarkin@highlandSNIPMEtechnology.com> wrote:
>
>>On Tue, 11 Oct 2022 23:45:01 -0700, boB <boB@K7IQ.com> wrote:
>>
>>>On Tue, 11 Oct 2022 17:13:39 -0700, John Larkin
>>><jlarkin@highland_atwork_technology.com> wrote:
>>>
>>>>This is crazy. When we can't get parts, we design around what we can
>>>>find and buy a reel of 3000. Or so. Whatever package we can get.
>>>>
>>>>Lots of old tin-lead-plated parts are available, but we're ROHS and
>>>>want to stay honest.
>>>
>>>
>>>What kind of leaded parts are availble that the ROHS parts are not as
>>>available ?
>>>
>>>boB
>>
>>Lots. LM1117 and LM2941 for example.
>
>
>We use thos types of parts and still an unleaded non-RoHS
>manufacturing process but I thought most of our parts were RoHS leads.
>
>At least I know that RoHS lead parts work fine in a non-RoHS product
>line. I was under the impresion that since RoHS parts works fine
>with lead solder that everything was RoHS these days.
>Guess not !
>
>boB

I'm seeing tin/lead parts available where ROHS is not. Probably old
stock.

What this is doing is forcing me to use newer parts, which is mostly a
good thing in the long run.

On 10/12/22 12:21 PM, John Larkin wrote:
> On Wed, 12 Oct 2022 12:12:28 -0700, boB <boB@K7IQ.com> wrote:
>
>> On Wed, 12 Oct 2022 07:07:35 -0700, John Larkin
>> <jlarkin@highlandSNIPMEtechnology.com> wrote:
>>
>>> On Tue, 11 Oct 2022 23:45:01 -0700, boB <boB@K7IQ.com> wrote:
>>>
>>>> On Tue, 11 Oct 2022 17:13:39 -0700, John Larkin
>>>> <jlarkin@highland_atwork_technology.com> wrote:
>>>>
>>>>> This is crazy. When we can't get parts, we design around what we can
>>>>> find and buy a reel of 3000. Or so. Whatever package we can get.
>>>>>
>>>>> Lots of old tin-lead-plated parts are available, but we're ROHS and
>>>>> want to stay honest.
>>>>
>>>>
>>>> What kind of leaded parts are availble that the ROHS parts are not as
>>>> available ?
>>>>
>>>> boB
>>>
>>> Lots. LM1117 and LM2941 for example.
>>
>>
>> We use thos types of parts and still an unleaded non-RoHS
>> manufacturing process but I thought most of our parts were RoHS leads.
>>
>> At least I know that RoHS lead parts work fine in a non-RoHS product
>> line. I was under the impresion that since RoHS parts works fine
>> with lead solder that everything was RoHS these days.
>> Guess not !
>>
>> boB
>
> I'm seeing tin/lead parts available where ROHS is not. Probably old
> stock.
>
> What this is doing is forcing me to use newer parts, which is mostly a
> good thing in the long run.
>

I usually advise clients not to do that. Newer parts are often even more
specialized and thus at higher risk of a future unobtanium status.

Over the last three years I have redesigned several circuits "back to
the future". Basically reverted them to all-transistor, no ICs other
than very mundane opamps. Most now look like the innards of a 1970's era
stereo but for the respective clients the supply chain problems have
largely vanished. Sometimes they keep producing the integrated version
as long as feasible and move to the discrete one when the supply chain
fritzes again. Like an insurance policy.

For parts such as low-ESR electrolytics and for inductors it pays to
provide at least two footprint variants. If the CAD can't be overridden
for an overlay a special "supply shortage" library part has to be made.

I hope all this ends soon because I'd like to stay in retirement as much
as possible.

--
Regards, Joerg

http://www.analogconsultants.com/

On 13/10/22 01:07, John Larkin wrote:
> On Tue, 11 Oct 2022 23:45:01 -0700, boB <boB@K7IQ.com> wrote:
>
>> On Tue, 11 Oct 2022 17:13:39 -0700, John Larkin
>> <jlarkin@highland_atwork_technology.com> wrote:
>>
>>> This is crazy. When we can't get parts, we design around what we can
>>> find and buy a reel of 3000. Or so. Whatever package we can get.
>>>
>>> Lots of old tin-lead-plated parts are available, but we're ROHS and
>>> want to stay honest.
>>
>>
>> What kind of leaded parts are availble that the ROHS parts are not as
>> available ?
>>
>> boB
>
> Lots. LM1117 and LM2941 for example.

LM1117? Try

https://lcsc.com/product-detail/Linear-Voltage-Regulators-LDO_HXY-MOSFET-HXY6206I-3-3_C5148688.html

$2c, and only 5uA quiescent current instead of some mA.

John Larkin wrote:
> This is crazy. When we can't get parts, we design around what we can
> find and buy a reel of 3000. Or so. Whatever package we can get.
>
> Lots of old tin-lead-plated parts are available, but we're ROHS and
> want to stay honest.

If nobody uses them, they'll go to a landfill anyway.

--
Defund the Thought Police

On 12-10-2022 02:13, John Larkin wrote:
> This is crazy. When we can't get parts, we design around what we can
> find and buy a reel of 3000. Or so. Whatever package we can get.
>
> Lots of old tin-lead-plated parts are available, but we're ROHS and
> want to stay honest.
>
It's a lot better now than just 6 months ago. It's advancing in the
right direction :-)

I don't mind the problems we have right now, more work for me ;-)

On Thursday, October 13, 2022 at 11:35:53 PM UTC, Klaus Kragelund wrote:
> On 12-10-2022 02:13, John Larkin wrote:
> > This is crazy. When we can't get parts, we design around what we can
> > find and buy a reel of 3000. Or so. Whatever package we can get.
> >
> > Lots of old tin-lead-plated parts are available, but we're ROHS and
> > want to stay honest.

Interesting problem, John. I understand you need the RoHS
qualification label on your product, or else, what?
what is the penalty if you used non-RoHS parts?
You can't sell it? or your customers won't like it?
If the objective is only to keep lead (Pb) out of waste
stream, then would your company participate in a
"take back" program for your old equipment?

On Friday, October 14, 2022 at 3:16:22 PM UTC-4, Rich S wrote:
> On Thursday, October 13, 2022 at 11:35:53 PM UTC, Klaus Kragelund wrote:
> > On 12-10-2022 02:13, John Larkin wrote:
> > > This is crazy. When we can't get parts, we design around what we can
> > > find and buy a reel of 3000. Or so. Whatever package we can get.
> > >
> > > Lots of old tin-lead-plated parts are available, but we're ROHS and
> > > want to stay honest.
> Interesting problem, John. I understand you need the RoHS
> qualification label on your product, or else, what?
> what is the penalty if you used non-RoHS parts?
> You can't sell it? or your customers won't like it?
> If the objective is only to keep lead (Pb) out of waste
> stream, then would your company participate in a
> "take back" program for your old equipment?

If your products are not RoHS, you simply can't sell them in the EU and some other places. There are a few exceptions, such as military gear, but otherwise it keeps you out of a rather large market.

--

Rick C.

- Get 1,000 miles of free Supercharging
- Tesla referral code - https://ts.la/richard11209

On Fri, 14 Oct 2022 12:16:18 -0700 (PDT), Rich S
<richsulinengineer@gmail.com> wrote:

>On Thursday, October 13, 2022 at 11:35:53 PM UTC, Klaus Kragelund wrote:
>> On 12-10-2022 02:13, John Larkin wrote:
>> > This is crazy. When we can't get parts, we design around what we can
>> > find and buy a reel of 3000. Or so. Whatever package we can get.
>> >
>> > Lots of old tin-lead-plated parts are available, but we're ROHS and
>> > want to stay honest.
>
>Interesting problem, John. I understand you need the RoHS
>qualification label on your product, or else, what?

No label, it's just that some customers expect ROHS so we decided some
time ago to go entirely lead-free.

Pity, the 63/37 solder joints were shiny and beautiful.

>what is the penalty if you used non-RoHS parts?

Probably none.

>You can't sell it? or your customers won't like it?
>If the objective is only to keep lead (Pb) out of waste
>stream, then would your company participate in a
>"take back" program for your old equipment?
>
>

Someone recently asked about WEEE. I think a lot of certifications are
required but we haven't done that. We told him we'd accept our old
stuff for free and dispose properly.