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

696 posts / 0 new
Last post
BlueSwordM
BlueSwordM's picture
Offline
Last seen: 1 week 14 hours ago
Joined: 11/29/2017 - 12:34
Posts: 5552
Location: Canada

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

WTF
Offline
Last seen: 4 days 18 hours ago
Joined: 03/05/2017 - 20:13
Posts: 318

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.

contactcr
Offline
Last seen: 15 min 37 sec ago
Joined: 05/19/2017 - 18:52
Posts: 3564
Location: US

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

BlueSwordM
BlueSwordM's picture
Offline
Last seen: 1 week 14 hours ago
Joined: 11/29/2017 - 12:34
Posts: 5552
Location: Canada

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.

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

BlueSwordM
BlueSwordM's picture
Offline
Last seen: 1 week 14 hours ago
Joined: 11/29/2017 - 12:34
Posts: 5552
Location: Canada

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.

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

led4power
led4power's picture
Offline
Last seen: 1 hour 20 min ago
Joined: 12/29/2012 - 09:48
Posts: 1295
Location: Croatia,EU

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.

 

 

BlueSwordM
BlueSwordM's picture
Offline
Last seen: 1 week 14 hours ago
Joined: 11/29/2017 - 12:34
Posts: 5552
Location: Canada

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.

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

BlueSwordM
BlueSwordM's picture
Offline
Last seen: 1 week 14 hours ago
Joined: 11/29/2017 - 12:34
Posts: 5552
Location: Canada

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.

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

BlueSwordM
BlueSwordM's picture
Offline
Last seen: 1 week 14 hours ago
Joined: 11/29/2017 - 12:34
Posts: 5552
Location: Canada

@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.

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

HONDARIDER
HONDARIDER's picture
Offline
Last seen: 4 months 2 weeks ago
Joined: 04/22/2018 - 11:45
Posts: 940
Location: Hot Springs, Arkansas

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.

BlueSwordM
BlueSwordM's picture
Offline
Last seen: 1 week 14 hours ago
Joined: 11/29/2017 - 12:34
Posts: 5552
Location: Canada

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

BlueSwordM
BlueSwordM's picture
Offline
Last seen: 1 week 14 hours ago
Joined: 11/29/2017 - 12:34
Posts: 5552
Location: Canada

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

http://www.mtnelectronics.com/index.php?route=product/product&product_id...

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

Tom E
Tom E's picture
Offline
Last seen: 52 min 12 sec ago
Joined: 08/19/2012 - 08:23
Posts: 13813
Location: LI NY

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...

BlueSwordM
BlueSwordM's picture
Offline
Last seen: 1 week 14 hours ago
Joined: 11/29/2017 - 12:34
Posts: 5552
Location: Canada

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 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.

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

Tom E
Tom E's picture
Offline
Last seen: 52 min 12 sec ago
Joined: 08/19/2012 - 08:23
Posts: 13813
Location: LI NY

BlueSwordM wrote:
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.

 - all good bout the LED's

 - No, I don't have a temp controlled hotplate - might have to investigate getting one. I used the hot air from under the MCPCB, usually works. For driver/PCB reflows, I use a coffee mug warmer - works well, an EE friend actually gave it to me because he no longer uses it, but uses a temp controlled skillet or hotplate himself, mainly to handle bigger boards, etc.

For the coffer mug warmer, I turn it on and let it warm up a big, set the board on it and you can see the solder paste already melting, spreading, then use my hot air station at a more reasonable temp from the top while the board sits on the mug warmer.

Any recommendations and/or links appreciated for a hotplate - I'll search BLF now...

hodor
hodor's picture
Offline
Last seen: 30 min 32 sec ago
Joined: 07/11/2018 - 03:58
Posts: 994
Location: UK

@BlueSwordM Just checking if you got my pm?

Tom E
Tom E's picture
Offline
Last seen: 52 min 12 sec ago
Joined: 08/19/2012 - 08:23
Posts: 13813
Location: LI NY

 Ok, this looks bout perfect maybe: https://www.amazon.com/dp/B07456SPMF/ref=psdc_13838451_t1_B01LE0PD5Q?th=1

Reasonably priced, good rating, says it's a consistent heat - no cold spots, etc.

 

BlueSwordM
BlueSwordM's picture
Offline
Last seen: 1 week 14 hours ago
Joined: 11/29/2017 - 12:34
Posts: 5552
Location: Canada

@hodor, I’ll remove you, don’t worry.

@TomE, here’s a pic of the hotplate I use.

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

hodor
hodor's picture
Offline
Last seen: 30 min 32 sec ago
Joined: 07/11/2018 - 03:58
Posts: 994
Location: UK

BlueSwordM wrote:
@hodor, I’ll remove you, don’t worry.

@TomE, here’s a pic of the hotplate I use.

![url=https://postimages.org/][img]https://i.postimg.cc/MH2R7ZCD/Screenshot-Ga...!

Thanks. That hotplate’s seen some action.

BlueSwordM
BlueSwordM's picture
Offline
Last seen: 1 week 14 hours ago
Joined: 11/29/2017 - 12:34
Posts: 5552
Location: Canada

Yep. That’s a relatively recent botch on my part though.

The light brown/orange stuff was some flux from experimentation trying to solder my springs with a hotplate. Ended up buying a heatgun after that.

The dark brown stuff is metallic copper sludge remnants(Cu3+), an oxide. I literally can’t remove it…

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

BlueSwordM
BlueSwordM's picture
Offline
Last seen: 1 week 14 hours ago
Joined: 11/29/2017 - 12:34
Posts: 5552
Location: Canada

@TomE, try to visit some universities/colleges.

I actually found mine at my college last year, and it’s been so helpful ever since.

If you want some good hotplates, I can help you out.

Here’s a cheap one, and small:
https://www.aliexpress.com/item/UYUE-110-220-V-Mobilephone-Built-in-Pump...LCD-Screen-Separator-Machine/32801227476.html

A larger one:
https://www.aliexpress.com/item/UYUE-946C-110-220V-850W-5-5-inch-Electro...

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

Rusty
Rusty's picture
Offline
Last seen: 3 days 20 hours ago
Joined: 04/11/2011 - 16:38
Posts: 108
Location: UK

BlueSwordM: Please could you add 10no SST-20 4k & 10no LH351D 4k, in addition to the springs on line 19 of the s/sheet?

BlueSwordM
BlueSwordM's picture
Offline
Last seen: 1 week 14 hours ago
Joined: 11/29/2017 - 12:34
Posts: 5552
Location: Canada

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

Tom E
Tom E's picture
Offline
Last seen: 52 min 12 sec ago
Joined: 08/19/2012 - 08:23
Posts: 13813
Location: LI NY

Hhhmm. Guess the 100x100 size would be good enough to do least a few 17 mm drivers at a time, and can handle the biggest drivers or MCPCB's. The shipping cost is big though. I like they can go up to 200C, better than 212F (100C) max of the burners.

Unloco
Online
Last seen: 1 min 38 sec ago
Joined: 01/27/2018 - 16:17
Posts: 460

I have this hotplate https://www.aliexpress.com/item/UYUE-946-1010-LED-Display-Preheating-Platform-for-Mobile-Phone-Repair-220V-110V/32954192636.html

Tom E
Tom E's picture
Offline
Last seen: 52 min 12 sec ago
Joined: 08/19/2012 - 08:23
Posts: 13813
Location: LI NY

Unloco wrote:
I have this hotplate https://www.aliexpress.com/item/UYUE-946-1010-LED-Display-Preheating-Platform-for-Mobile-Phone-Repair-220V-110V/32954192636.html   

Good price w/shipping, not much info on it - do you know the max temp? Hoping for 200C or better.

Found other listings that say 50-350 or 50-400 -- that's good, assuming in C!

Unloco
Online
Last seen: 1 min 38 sec ago
Joined: 01/27/2018 - 16:17
Posts: 460

I have used it at around 200-220C but I think the max temp is 400C.
In a few hours, when I return to my home I check it.

djozz
djozz's picture
Offline
Last seen: 55 min ago
Joined: 09/07/2012 - 17:04
Posts: 17480
Location: Amsterdam

So how do you like that hotplate? It looks very small and convenient, I almost bought one. What time does it take to reach the set temperature?

AEDe
AEDe's picture
Offline
Last seen: 1 hour 1 min ago
Joined: 12/01/2016 - 12:07
Posts: 678
Location: Moscow

@BlueSwordM , could you please reduce my query to 10 * SST20 4000/3000 (springs and 3500 K are without change)?

Unloco
Online
Last seen: 1 min 38 sec ago
Joined: 01/27/2018 - 16:17
Posts: 460

Unloco wrote:
I have used it at around 200-220C but I think the max temp is 400C.
In a few hours, when I return to my home I check it.
Confirmed. Maximum 400C.

djozz wrote:
So how do you like that hotplate? It looks very small and convenient, I almost bought one. What time does it take to reach the set temperature?
I like very much. Since I have it, I have not failed any led reflow.

Room temperature 27C (air conditioned).
Hotplate initial temperature 33C.
Delay until reaching the set temperature (218C) 10:44 minutes.

Pages