Does anyone have a spec sheet on this part? It is used in a JVCHXZ30. I would like to use it in a different project but the data sheet is not to be found. Numbers all around STK432-70 come up but not that part.
I think the -70 indicates voltage or current.
Total output power, isn't it ? 2 x 35w RMS ? Any version of the STK432 data sheet should be good for the basic pinning and specs. Looks like there are
50 watt, 70 watt and 90 watt versions of it. I guess that if you have one with no dash number, it's probably a version that's less than 50 watts total output. If you have a JVC model that it's already used in, then just look up the specs for that model. That should give you a good indication of its power capability, and a quick squint at the schematic will tell you all you need to know about operating voltages, pinning, and support circuitry.Arfa
Yah it is total watts RMS. Thought of it just after hitting the send button. Same holds true for the STK392 series. However I've seen the after dash numbers range from 010 t0 110. Probably a bunch in between and even over 110. Is the -70 total output power or power sinking capability?
What I need is pin outs, voltage limits, temperature characteristics. Anyone that indicates they have a .pdf spec sheet gives me a "not found" or a spec sheet on some other device such as a voltage regulator.
Download HX-Z30 service manual for free:
IC 602 is an STK432-70 2 channel audio power amp.
Agreed. If the OP can't find a genuine data sheet, that might suggest that it's now an obsolescent device anyway. Obtaining the service manual for the JVC hifi that it's in, will tell all. Well, certainly pinouts, and the voltages that JVC are applying to it in that hifi can be taken as being the limits for reliable operation. In my experience, most hifi manufacturers don't 'reinvent the wheel' with their products. They pretty much graft ICs and t.f. hybrid modules like STK's into their designs, using an exact copy of the manufacturer's 'typical application' schematic, right down to the values and recommended types for support components.
Obviously, the JVC manual is not going to tell you anything about the temperature characteristics of the device, but are these actually important to the OP's application anyway (which is presumably a personal one-off ?) As long as the device is adequately cooled, exact thermal specs should not be an issue. Manufacturers of hifi equipment don't waste money in their designs, so you can bet that the heatsinking that JVC are applying, is the minimum you can get away with for full rated output power, in line with the level of supply rails they are using.
Arfa
I appreciate all the suggestions. I had already used the schematic to decide what I needed to do.
I am making a 3 phase 400 cycle 130 volt power supply for some test equipment. I am driving a 18 volt power transformer in reverse (18 volts in, 125 volts out)and wanted to make sure I did not over stress anything.
I picked this part since I had some in stock and it was only $3.18. I thought it would be easy to find the specs.
Yep especially in an all-in-one home theater where space is at a premium. Would be nice to know what the OP had in mind.
Sounds like aircraft stuff huh?
Yes, I make some test equipment for military aircraft. They need a tester to test the test equipment.
Yeah the 400hz was a give away.
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