New Siglent SPD4000X series power supply

[oewean]

Siglent has a new power supply, SPD4000X series.
Looks nice and well speced.

https://www.siglent.com/products-overview/spd4000x/

[blurpy]

Video here:


Looks like only 2 of the channels are 32 volts.

[mawyatt]

Looks like they got the banana terminals finally spaced properly 

Seem relatively expensive compared to the SPD3303X-E, altho having 4 channels like the GPP-4323 is nice, as is remote sense on 2 channels

Best,

[nctnico]

Looks like they got the banana terminals finally spaced properly 

And it has a numeric keypad.

[Antonio90]

Is it made by GWInstek?

[2N3055]

Is it made by GWInstek?

What kind of question is that?

They are both manufacturers.
Others rebrand their products, respectively....

[nctnico]

Is it made by GWInstek?

What kind of question is that?

A very logical one as Siglent and GW Instek have sold the same power supply before.

On second look I notice the USB-A is at the back instead of on the front. Who thought of that?

[2N3055]

Is it made by GWInstek?

What kind of question is that?

A very logical one as Siglent and GW Instek have sold the same power supply before.

Seriously ?
I had no idea that was the case...
Which one?

As far as I know that is not so now...

[Antonio90]

Is it made by GWInstek?

What kind of question is that?

They are both manufacturers.
Others rebrand their products, respectively....

Just curious, my apologies if it's a stupid question. It struck me as quite similar to the GPP range, visually speaking and in terms of layout. Not saying they are identical, but I wouldn't be surprised if they share the front-panel PCB, or use a very similar one.

Also, if I'm not mistaken, The SPD3303X-E shares at least the output stages with a GWInstek PSU, can't remember which.

I don't say that as a bad thing, I quite like GWInstek.

[tautech]

Looks like they got the banana terminals finally spaced properly 

FYI
SPD1000X models use 19mm terminal spacings.

A very logical one as Siglent and GW Instek have sold the same power supply before.

I too ask for qualification for this statement.

On second look I notice the USB-A is at the back instead of on the front. Who thought of that?

To date, none of the Siglent linear PSU's had a USB A port at all and this is a welcome addition to the range so to not need PC SW to update firmware and use USB external memory to store/load setup/config files.

[2N3055]

Is it made by GWInstek?

What kind of question is that?

They are both manufacturers.
Others rebrand their products, respectively....

Just curious, my apologies if it's a stupid question. It struck me as quite similar to the GPP range, visually speaking and in terms of layout. Not saying they are identical, but I wouldn't be surprised if they share the front-panel PCB, or use a very similar one.

Also, if I'm not mistaken, The SPD3303X-E shares at least the output stages with a GWInstek PSU, can't remember which.

I don't say that as a bad thing, I quite like GWInstek.

No not stupid, I was just confused because AFAIK they don't do rebrands, other rebrand their products.. I'm not aware of any collaboration with GW Instek in that regard.
And yes,I like GW Instek too, very decent company and products.

[nctnico]

Is it made by GWInstek?

What kind of question is that?

They are both manufacturers.
Others rebrand their products, respectively....

Just curious, my apologies if it's a stupid question. It struck me as quite similar to the GPP range, visually speaking and in terms of layout. Not saying they are identical, but I wouldn't be surprised if they share the front-panel PCB, or use a very similar one.

Also, if I'm not mistaken, The SPD3303X-E shares at least the output stages with a GWInstek PSU, can't remember which.

The GW Instek GPD-3303S shares the same construction and the same output stage. And it wouldn't surprise me if this collaboration goes much further than this product. After all, GW Instek has a much longer history designing power products compared to Siglent. It wouldn't make sense re-invent the wheel just to satisfy NIH syndrom.

[tautech]

Looks like only 2 of the channels are 32 volts.

And 6A each.
SPD4306X looks the most interesting/capable model with two 30V 6A and two 15V 1.5A outputs which if can be seriesed/paralleled provides for a useful range of outputs.....
60V 6A or 30V 12A would be very handy for some.

[Martin72]

Looks nice

Not for me, although I generally have a problem with the look of today's power supply units, which are becoming more and more overloaded and pop-colored.
The second point, which is not so interesting for private use, is the terminals.
At work, we only use 4 mm safety test leads, which don't fit in there.
No, for once I'm not impressed by a siglent product, I like the 4-channel from GW Instek much better, both visually and in terms of the connections.

[tautech]

The second point, which is not so interesting for private use, is the terminals.
At work, we only use 4 mm safety test leads, which don't fit in there.

Shrouded retractable ones ? 

[Antonio90]

The Instek is quite nice, although 33% more expensive than the equivalent Siglent (chinese MSRP)
Will any of the Siglent offerings operate on two quadrants as the GPP?

I have a GPD-4303S, which I like quite a bit except for the fact that it can only turn on and off all channels at once. I did burn a cheap 3v chinese scale with 20v by mistake thanks to that. Also, no numpad. This looks like a very good replacement.

[Martin72]

Shrouded retractable ones ? 

We have a few dozen of them as a temporary solution for our old devices without safety bananas(until they will be replaced).
I'm certainly not going to buy appx 300 new cables so that I can use a power supply unit with such terminals
In addition, these sliding sleeve cables are mechanically fragile and of poor quality, even though they come from Hirschmann.

[tautech]

In addition, these sliding sleeve cables are mechanically fragile and of poor quality, even though they come from Hirschmann.

Hmmm, never had such problems with the 100's we've supplied from Aliexpress. 

However we did get a sample shipment for assessment before bulk purchase.

[Martin72]

Hmmm, never had such problems with the 100's we've supplied from Aliexpress.

We use them daily under partly rough conditions, not only to connect something that is on a lab table.

[temperance]

hm, keypad and 1 rotary encoder... So you want to adjust the output voltage on CH1. You turn the encoder and ooops, magic smoke. You just adjusted CH2.

I don't like those power supplies for generic daily use and prefer supplies with separate pot's or encoders for current and voltage for each channel.

[nctnico]

Typically I never use the encoder on a PSU with a keypad. Typing in the number is quicker and you can cancel before comitting the new setting.

[tautech]

The second point, which is not so interesting for private use, is the terminals.
At work, we only use 4 mm safety test leads, which don't fit in there.

Dwelling on these comments, I believe many instead will prefer terminals that provide connection options.

Generally the hobbyist prefers multiple connection choices and I certainly do as when I built my first PSU one of the must haves was cross hole drilled binding posts with banana sockets which is just what this new Siglent PSU provides.
This allows for plain wire, fork and banana connections.

OTOH your work you may have different requirements for outputs than the target market Siglent has catered for.

[2N3055]

I don't understand why more manufacturers don't use these...

[NE666]

I don't understand why more manufacturers don't use these...

Yup, and note the sense terminals on the front panel too 

[2N3055]

I don't understand why more manufacturers don't use these...

Yup, and note the sense terminals on the front panel too 

Yep..

[tszaboo]

I don't understand why more manufacturers don't use these...

AIM-TTI. They have some great power supplies we have a bunch of them at work. Nice small, not bloated, quality, quiet, and lot's of features on the front panel.
This one from Siglent, also looks nice, well thought user interface.

[MathWizard]

So these aren't for sale yet? Or only in Asia ? I have the spd3303x and it's great for the low power stuff I've been doing. And adjustable bench PSU's are so convenient and easy, compared to going to the junk box for old dirty SMPS's, or messing around with linear regulators.

I made a 20V 1A CV-CV PSU that's decent enough, but it's only 1 channel. And just working on an AM TX and RX, I would like another channel or 2. I'm forgetting I have another 5V rail on my 3303x, I'm going to use that right now.


I'll be watching for these when I go to get another PSU.

[mawyatt]

The PS is an often overlooked piece of test bench equipment. Having a good multi-channel, low noise, accurate, quiet PS will prove itself in short order when doing lab test & development work. One that doesn't exhibit voltage overshoot at Turn On or Off, and quick, accurate low level Current Limit are important features when working with low voltage circuits like modern CMOS. The 3303X we have (3) have delivered such with only complaints being the unusual terminal spacing (which seems to be corrected in the 4000) and somewhat quirky UI which one quickly gets used too.

We also have a GW Instek 4323, another really nice PS with all those features and 4 controllable/displayed channels. However the "GoTo" PS for most of our lab bench use in the 3303X, it's quick, easy and just gets the job done on the bench without hassle

Best,

[exe]

What are the prices?

[Antonio90]

You can find them in the chart at the end of the chinese Siglent page.
€ 625 for the 2x 6V 3.2A & 2x 32V 3.2A
€ 755: 2x 15V 1.5A & 2x 15V 10A
€ 1009: 2x 15V 1.5A & 2x 30V 10A

All of them are within 0.03% + 0.03 of readback value.
Noise and transient response seem also quite good.

I would compare them with the ~equivalent from GW Instek and pick based on price and support/availability locally, as they do seem to be pretty similar, and I wouldn't be surprised if they share the internals.

[GnomeZA]

I have a SPD3303X-E (hacked to SPD3303X), I'm a hobbyist so I use it weekly (not daily).
The powersupply is superb but the way they have you switch between voltage and current adjust on the current channel and adjust the voltage update and down is atrocious.
I make mistakes all the time because the "fine" key and left right keys are just restrictive and stupidly setup.
It's like they didn't do any usability studies.
It is objectively badly designed in that way.

I really hope the new version improves on that, I feel like this isn't a hard problem to solve.

[BillyO]

The second point, which is not so interesting for private use, is the terminals.
At work, we only use 4 mm safety test leads, which don't fit in there.

I must be missing something but why would you need safety terminals on a LV, LC, short circuit protected PS?

Is it because they are the only leads you have?

It seems a bit of a strange parameter on which to make a purchasing decision.  Especially if it meant you'd have to put up with an inferior power supply.  Maybe you have a ton of test leads, but only need a few power supplies?  But then you'd only need to buy a few leads to work with the few supplies.

Not trying to be combative .. I just really don't understand this.  Leads are not very expensive and it seems having a variety for specific needs might actually be a good idea.

I guess one reason might be that a company has a lot of unqualified personnel that might stupidly use a non-safety lead in a HV, HC, CAT IV situation.    Of course, if they were likely to make that error they should not be allowed to work in such an enviroment.

 

[nctnico]

Keep in mind Darwin is very keen on handing out awards as he has an infinite amount of those 

It looks like Martin is working in a lab where they have lots of high voltage / mains powered systems. I wouldn't want to have non-isolated banana leads available to anyone in such an environment. It is too easy for people to get tempted to use a non-isolated one where they really, really should use an isolated one.

[tautech]

Keep in mind Darwin is very keen on handing out awards as he has an infinite amount of those 

It looks like Martin is working in a lab where they have lots of high voltage / mains powered systems. I wouldn't want to have non-isolated banana leads available to anyone in such an environment. It is too easy for people to get tempted to use a non-isolated one where they really, really should use an isolated one.

And/or have retractable shrouded leads…..

[BillyO]

Keep in mind Darwin is very keen on handing out awards as he has an infinite amount of those 

...

It is too easy for people to get tempted to use a non-isolated one where they really, really should use an isolated one.

Perhaps you are right but maybe if the people would carelessly use leads with bare metal showing in HV situations it may be advantageous in the long run to allow them to win their award. 

[Antonio90]

Keep in mind Darwin is very keen on handing out awards as he has an infinite amount of those 

...

It is too easy for people to get tempted to use a non-isolated one where they really, really should use an isolated one.

Perhaps you are right but maybe if the people would carelessly use leads with bare metal showing in HV situations it may be advantageous in the long run to allow them to win their award. 

It is a matter of probability I guess. The most reasonable person can make a blunder or do something stupid.
They already have a setup of test leads that work and have been chosen according to regulations, internal policies and test setups. I really don't see the problem, taking into account that there are other options in the market with specs just as good as these.

[mon]

Lurked for a long while but this PSU has got me excited enough to make an account.

I feel like this is going to be a very popular mid-range supply, even with the price looking almost double that of the SPD3303X. I'm in the market for a new lab supply and it seems like it solves many of the problems that others have

• Normal number input (unlike the totally lacking SPD3303X, and the insane circular input of the rigols)
• Actual programmable voltage/current for the lower voltage inputs (no fixed outputs as the SPD3303X)
• Short form factor for the cheapest model (unlike the rigols)
• Fully isolated (Rigol 900 series fixed that, but the 800 series is still popular)
• 1mV/1mA as standard (you could argue the unlock hacks make this unimportant)
• hopefully doesn't have the power-on spikes and hot regulators, seems both Rigol and Siglent fixed that in the previous generation

And personally, I do like the black case. I won't comment on the protected bananas, I don't use them much...

The only other real competitor in this price range is the GPP-4323, but in Australia they're pricey at A$1300, and I hate the 4/1/2/3 port numbering.

User manual (in chinese) has the dimensions.
220x144.97mm on the front panel, 335mm deep for the SPD4323X and 395mm deep for the higher spec models.

It'll be an added bonus if the release of this drops the price of the 3000 series.

[tautech]

Welcome to the forum.

The top model SPD4306X is listed as ￥7,880 which is roughly 1100 USD so getting up there however western pricing has never converted well. We'll just have to wait and see.
I've asked questions about these PSU's but not got much info.....yet. 

[mon]

The top model SPD4306X is listed as ￥7,880 which is roughly 1100 USD so getting up there however western pricing has never converted well. We'll just have to wait and see.
I've asked questions about these PSU's but not got much info.....yet. 

Yes, the top model is definitely a big jump in price - I'm looking solely at the lowest tier which seems a lot more bang for buck.

Fingers crossed we get a full release of this and the new HD scopes after Chinese New Year.

[tautech]

Fingers crossed we get a full release of this and the new HD scopes after Chinese New Year.

Sadly no, only the 3 new ranges of HD scopes will come available in the next few weeks.
I have asked for a 2024 release program which they were preparing and maybe that won't be finalised for a few weeks. 

[mon]

I have asked for a 2024 release program which they were preparing and maybe that won't be finalised for a few weeks. 

It's been a handful of weeks - any news on a release date?

I'm already starting to line up projects to utilise the remote programming - not like another PSU can't do the trick (GW-4323 calls strongly), but I'm still enamoured with this new one, and the dumb Tenma from work doesn't cut it.

[MathWizard]

Will the older models get any cheaper ?

[seajayshore]

Just chiming-in to say these new power supplies do look very nice on paper. Especially the SPD4306X (400W) one in my case...

I wonder how loud it will be though... My SPD3303X is a little noisy IMO (but I don't have many other references).

[tautech]

Just chiming-in to say these new power supplies do look very nice on paper. Especially the SPD4306X (400W) one in my case...

Not long to wait, they should be available in July.

I wonder how loud it will be though... My SPD3303X is a little noisy IMO (but I don't have many other references).

These are almost silent at low loads, are you pushing yours ?

The 4000 series seems to share the same size enclosure and fan however capable of higher output capability one would expect greater fan cooling to manage the top model 400W specification.

[seajayshore]

Thanks for the update tautech - keeping watch 

As for my SPD3303X - my current project has it sat around 45-55W consistently (19V if that makes a difference). So like 20-25% of full load?
It's not annoyingly noisy I should add - and is definitely silent at much lower power - but yeah it's sat right next to me so I notice. Very happy with it all the same!

[AddisonAve1938]

Does anyone have an idea or the inside scoop of as to when these will hit the North American market?

[BillyO]

Does anyone have an idea or the inside scope of as to when these will hit the North American market?

I'm guessing mid-summer, however you could put in a query to siglentna.com.