Difference between Siglent SPD3303X and SPD3303S power supply - Page 1
Forum section: electronics / testgear

author: pascal_sweden
author_rank: Super Contributor
timestamp: December 02, 2015, 12:52:33 pm
content: I found a supplier in Germany who sells the Siglent SPD3303S at a very attractive price: 249 EUR.This seems a really good deal, however, before I decide on the purchase, I would like to know what the big improvements are in the Siglent SPD3303X versus the SPD3303S?

author: pascal_sweden
author_rank: Super Contributor
timestamp: December 06, 2015, 03:46:03 pm
content: It would be nice to have a side by side comparison teardown for both units.

author: cs.dk
author_rank: Unknown
timestamp: December 06, 2015, 03:54:08 pm
content: Not a teardown, but you can actually compare their specs on Siglents website;http://www.siglent.com/ENs/prodcut-dbjg.aspx?Proid=529,1142,&tid=17&id=1132&T=2

author: pascal_sweden
author_rank: Super Contributor
timestamp: December 06, 2015, 05:07:24 pm
content: It seems that the difference is the output voltage, the max. output power and the network interface.The precision on the outputs is the same between both models.

author: cs.dk
author_rank: Unknown
timestamp: December 06, 2015, 06:12:51 pm
content: I don't know how they "won" 2 V at the output. But my guess is, that they look the same inside. Tautech may have some info on them.Do you wanna share, where you find it? Batronix is 370€ + VAT..However, i've got 6 PSU's, none of them with a fixed output. I really don't see the deal there. Get a regular 2-channel adjustable unit. It would probably be cheaper (Batronix pricetag in memory).

author: pascal_sweden
author_rank: Super Contributor
timestamp: December 06, 2015, 06:59:55 pm
content: Quote from: cs.dk on December 06, 2015, 06:12:51 pmIt was a Christmas sale at a German supplier. But now I see that the price is raised back apparently.Weird as I thought that the action lasted during December.Quote from: cs.dk on December 06, 2015, 06:12:51 pmWhat do you mean? Should I get the Rigol unit or not? Or which other brand would you recommend?I am looking for a triple power supply unit.

author: tautech
author_rank: Super Contributor
timestamp: December 06, 2015, 07:16:26 pm
content: Quote from: cs.dk on December 06, 2015, 06:12:51 pmSorry I don't have any more than the datasheets and manuals that are freely available fron the Siglent websites.

author: tautech
author_rank: Super Contributor
timestamp: December 06, 2015, 07:27:44 pm
content: Quote from: pascal_sweden on December 06, 2015, 06:59:55 pmYep. these Siglent units are 3 channel, 2 adjustable and 1 fixed (Switchable 2.5, 3.3, 5V)The 2 adjustable outputs can be configured in series for up to 60V or parallel for 6 amps.Whether we'll see the D or S models to continue to be available I'm not sure.

author: pascal_sweden
author_rank: Super Contributor
timestamp: December 09, 2015, 12:57:46 am
content: Looking forward to a "teardown and comparison" video of the Siglent SPD3303X by Dave.

author: Pinkus
author_rank: Frequent Contributor
timestamp: December 09, 2015, 09:19:09 am
content: Quote from: pascal_sweden on December 02, 2015, 12:52:33 pmQuote from: cs.dk on December 06, 2015, 06:12:51 pmGiven that the seller with the Xmas special still made profit, you may imagine how much money Batronix makes on such a cheap scope.

author: tautech
author_rank: Super Contributor
timestamp: December 09, 2015, 06:38:55 pm
content: Quote from: pascal_sweden on December 09, 2015, 12:57:46 amYou didn't have to wait long:https://www.eevblog.com/forum/blog/eevblog-828-siglent-spd3303x-precision-lab-psu-teardown/

author: pascal_sweden
author_rank: Super Contributor
timestamp: December 09, 2015, 07:17:39 pm
content: This can't be coincidence?

author: pascal_sweden
author_rank: Super Contributor
timestamp: July 11, 2016, 05:38:17 pm
content: I really hope that Siglent is watching this video!Dave immediately spotted several issues in the brand new power supply from Siglent. Nothing major though, but definitely worth to investigate, and most of these issues can be fixed relatively easy. Details are in the video.Side note regarding the capacitors: Why choose Lelon here and there, and not choose *consistently* Chemicon for *all* the capacitors? (That is, *every* single capacitor in the *entire* power supply)Consistency is something which we all like in the West. Why not in China?Suggestion for Siglent: In the future, Siglent could involve people like Dave during the prototype phase of a new product, to get early feedback from people about design decisions. This way Siglent can still correct issues and make adjustments to the design, before the final product is ready.It's so much easier to make changes during the prototyping phase, instead of making Engineering Change Notices (ECN) and new product revisions later on, after the first product revisions already left the factory. This creates unnecessary complexity and support costs.Really a simple procedure which they have to implement and add to their development cycle. It will not necessarily add a lot to the development cost. In fact, it would save them a lot of re-engineering costs later on.Think long-term Siglent! Involve people from the West during the early prototyping phase.Avoid surprises after the product is already launched on the market.You get all this free advice here on this forum. Both from experts and from end-users.This is a fortunate position for you. Not all test and measurement equipment companies are that popular here on this forum, so consider yourself lucky.Please use this free advice wisely and use it in a contructive way =) Don't see it as negative.We are here to help you improve your products.Think out of the box! With or without premium metal plate work

author: pascal_sweden
author_rank: Super Contributor
timestamp: June 15, 2017, 10:55:28 pm
content: Is there any forum user out here who has both units, and who is willing to make a side by side comparison video?I personally think that the SPD3303S looks very nice, and don't see the need for a color LCD.The BCD segments are easier to read IMO, and it looks more formal!

author: tautech
author_rank: Super Contributor
timestamp: June 15, 2017, 11:51:52 pm
content: Quote from: pascal_sweden on June 15, 2017, 10:55:28 pmI currently don't have both but have used both and the X version display offers much more info and is easier to read.Here's a pic of the X display:

author: pascal_sweden
author_rank: Super Contributor
timestamp: June 16, 2017, 12:44:57 am
content: Actually I was referring to the SPD3303C when it comes up to the BCD segment display.Honestly I think that this entry Siglent power supply looks very nice. No need for me to have an LCD display.The BCD segment display looks very nice in the dark. I don't like white fonts on a dark background.Here is a nice video that covers the Siglent SPD3303C power supply. All the features are demonstrated.Apparently the user is very happy with it!Can you confirm that the most recent revision of the Siglent SPD3303C also has the standard banana jacks?The earlier revisions of some Siglent power supplies didn't have standard banana jacks if I recall correctly.