Second Generation Silver Plated High Current Beryllium Copper Springs and 95+CRI SST20!

Hey Blue bump mine up to 30/30 please… and thanks!

Please update me to 50pcs of both large and small.

Both have been updated.

https://docs.google.com/spreadsheets/d/18SyWGP08EpK5OOcv1vZbLokQGv1KojNW04DGz_ywSbQ/edit?usp=sharing

BlueswordM please put me down for 20pcs of each spring

Got it.

List has been updated again:
https://docs.google.com/spreadsheets/d/18SyWGP08EpK5OOcv1vZbLokQGv1KojNW04DGz_ywSbQ/edit#gid=1514611202

Can I double my order?
20 total now of the large
20 total now of the small
Thanks

Updated.

The list has been updated:
https://docs.google.com/spreadsheets/d/18SyWGP08EpK5OOcv1vZbLokQGv1KojNW04DGz_ywSbQ/edit?usp=sharing

It looks like getting to 500 4000k SST 20’s is going to take a while if at all.

If the price of them isn’t too bad I’d be willing to add another ten to my order, maybe others can bump up their orders as well.

I suspect it would be easy if there was more confidence a good flux and tint bin could be secured.

Yeah it’s quite problematic.

A high flux bin is easy to get, but a good tint bin? That’s extremely hard.

Getting a good tint bin requires at least a full reel, or 3 reels for more choice, and 5000pcs to get an actual direct choice from the manufacturer.

So, guys, I’ve started preparing the orders for people with 3500k LEDs and springs since they were the easiest to do.

I will also order the 3000k LEDs soon, which will also be included and shipped with the springs.

The springs will start being made, as specified before, starting at 2/19/2019.

From MTN listing:

"This spring starts out at ~11mm, but after a few compression cycles the spring will remain at ~5mm"

So small spring collapses more than 6mm after several compression cycles? I thought difference is ~1mm.

OK that is pretty extreme.

That’s not what I’ve found for even the small spring…

That’s not what I have.

The large spring has a plastic deformation of about 1mm yes.

The small spring will have more than 1mm, but 6mm is pretty extreme.

The max I’ve had with the small spring is 3mm, at 8mm height.

Perhaps he meant full compression height?

I’ll ask what he meant by it, as it’s literally impossible for it to lose 6mm.

As an example, here is a pic I took of two springs, one stock, and the other one has been fully compressed about 10 times for 5 seconds each time.

@Led4Power, I’ve found the error, and I’ve emailed Richard about it.

Apparently, Richard actually put in the same sentence from the Intl Outdoor BeCu spring and put it in the listing.

He meant:

This spring starts out at ~11mm, but after a few compression cycles the spring will remain at ~8,5mm.

I would like to have 10 of the 3000K SST20’s with my (50 ea.) spring order please. I’m excited. I appreciate the service you provide for us BLF members. Thank you.

No problem.

The list has been updated:
https://docs.google.com/spreadsheets/d/18SyWGP08EpK5OOcv1vZbLokQGv1KojNW04DGz_ywSbQ/edit?usp=sharing

BTW, the small nickel plated BeCu spring is now available at MTN Electronics!

I just checked your latest list and I see my SST-20 3500's still on it -- is that ok, considering I received them already?

I see I got qty 30 of the 351D 4000K's, which is fine to keep as-is because going back and re-reading your posts, your tint tastes align about perfect with mine, so I trust you you can get good ones, and I do understand from what you said before, you won't buy if they aren't good in tint and bin.

I was think'n for a moment there's lots of choice in buying the 351D's now, but the tint/bin info isn't readily available and probably not so good.

I'm in the process of swapping out the 9 219B's in my ROT66 for the SST-20 3500K's. My hot air station would not do the job of getting the 219B's off, even at 500C - needed to use a torch. Cheap, or high temp solder on DTP copper is a pain...

1. Yes it’s ok.

This is only the interest part of the sheet. There’s also a shipped/received list separate from it. You have been checked off the list already since you received them :slight_smile:

2. Yeah. I’ve asked Digikey about this, and my Digikey rep specifically said:

Hi! Here is what I found:

1-reel(800pcs) w/bin code: F2T6Q2

4-reels(3200pcs) w/bin code: F2T4R2

5-reel and more(4000pcs+): Chromacity bin code can be specified to be manufactured at Samsung without guaranteed flux bin

So, it’s a bit problematic. The only way to get a good tint bin(T4, way below the BBL at 1A) is to order 3200pcs, and to get specific tint binning, it’s almost impossible.
The only ones we current have access to is the T6 tint bin. Good above 1A, not so good below that.

3. Have you tried using a temperature controlled hotplate? That’s how I do my reflows and component preheating. It works extremely well, and with my DIY stencil, it’s easy as pie.