Product Overview
Computer Products PM519 Potted High-Voltage Power Module - Nameplate 170V 10mA, PCB Pin-Mount
Condition
Unused NOS, sourced from an electronics distributor consolidating inventory. The module is a fully potted black brick carrying a cream and black nameplate that reads DC POWER SUPPLY, PM 519 170V 10MA, Computer Products, Component Division, Fort Lauderdale. It comes with its original blue and white Computer Products Power Module carton, PM 519 showing through the punched front window, the Ft. Lauderdale street address and phone printed along the bottom, a TRIPLE-TESTED panel on the side, and the white foam insert still in the box. Five gold-plated pins on the underside are straight and bright, marked +, -, TRIM, AC and AC, with a threaded brass mounting insert at the center of the base. The case shows light molding and handling marks in the plastic, no cracks, no corrosion, and no solder or trimmed leads on any pin. Evaluation: visual inspection only. Function testing was not performed here, and the TRIPLE-TESTED marking is the manufacturer's own factory claim printed on the original carton decades ago, not a test done in our shop. Covered by the PartsMine No Hassle Guarantee.
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Product Overview
The PM519 is an encapsulated AC-DC power module from the Computer Products Component Division in Fort Lauderdale, Florida, the component arm of a line later carried under the Power Products and Artesyn names. The nameplate on this unit reads 170V 10MA, and the underside pinout matches a single output: two pins marked AC for the line input, a + and a - output pair, and a TRIM pin for trimming the output. The whole supply is potted inside a sealed case that drops through a board on its own pins, with a threaded brass insert in the base for a mounting screw. A 170 volt rail at ten milliamps is bias-supply territory rather than logic-supply territory: enough for gas discharge and nixie tube displays, photodiode and electrometer bias, or a small tube stage, and not meant to feed digital loads. This model number has also been catalogued as a dual +/-15 VDC unit, which the nameplate here does not support, so treat the datasheet as the deciding document before you wire anything.
Key Features
- Nameplate rating: 170 VDC output at 10 mA, as printed on the module label
- Input: AC line input on the two pins marked AC - specific input voltage is not confirmed, verify against the Computer Products datasheet before connecting
- Output adjustment: TRIM pin brought out on the underside
- Pinout: five gold-plated pins marked +, -, TRIM, AC, AC
- Mounting: through-board pin mount plus a threaded brass insert at the center of the base
- Construction: fully encapsulated potted case, no user-serviceable interior
- Case size: approximately 3.5 in x 2.5 in x 1.25 in - not confirmed, verify against the datasheet before laying out a board
- Ships in its original Computer Products carton with the foam insert
Applications
- Nixie clock builder who wants a compact 170 VDC rail on the same board as the driver logic instead of a homebrew boost converter
- Instrument repair technician restoring 1970s or 1980s gear that used a potted high-voltage bias module in one corner of the board
- Bench experimenter biasing photodiodes, electrometer inputs, or small gas discharge devices from a line-powered assembly
- Collector of Computer Products and Artesyn lineage power hardware looking for an unused example still in its factory carton
Frequently Asked Questions
What does the label on this module actually say?
DC POWER SUPPLY, PM 519 170V 10MA, Computer Products, Component Division, Fort Lauderdale. The original carton carries the same PM 519 designation in its front window. The underside pinout is consistent with one output: +, -, TRIM, and two AC input pins. A dual +/-15 VDC description has also followed this model number, and we are not resolving that here. Verify the output against the Computer Products datasheet, and against a meter under a light load, before you design around either rating.
What input voltage does it take?
Not confirmed. Two pins are marked AC and nothing on the module or carton states the input voltage. Some modules in this family are fixed 115 VAC and others accept 230 VAC or have dual taps. Confirm the input configuration on the datasheet before this thing goes anywhere near a mains circuit.
Has it been powered up or tested?
No. Our evaluation was visual inspection only. Nothing here was plugged in, loaded, or metered, and no claim is made that it works. The TRIPLE-TESTED panel on the carton is what the factory printed on the box in Fort Lauderdale, not a result from our bench. This is a mains-input part with a high-voltage output, so treat commissioning as work for someone qualified to do it safely.
It has been sitting unpowered for decades. What about the electrolytics inside?
Fair question for any potted linear supply of this age. Unused and unpowered storage reduces the risk compared with a unit pulled from service, but it does not eliminate it, and the case is sealed so nothing inside can be inspected or reformed by hand. If you commission it, bring it up slowly on a variac with current limiting and watch the output before it carries a real load.
What am I actually getting, and what am I taking on?
You are getting one unused PM 519 module in its original Computer Products carton with the foam insert, with no datasheet, no mating socket, and no mounting screw. More than one of these is in stock, so the unit that ships to you may not be the individual piece in these photographs; they came in together from the same distributor lot. What you take on is an untested high-voltage supply: the nameplate rating is legible and the pins are clean and unsoldered, but nothing has been powered, the input voltage is unconfirmed, and the dual-output description attached to this model number is unresolved. The photographs show what these modules are, so read them as closely as you would read a datasheet. Shipping is $8 flat rate and becomes free once your order passes $28, and orders leave our Idaho warehouse the same or next business day.
Computer Products potted an entire high-voltage rail into one sealed brick and shipped it in a carton that bragged about being tested three times, then it sat unopened long enough for the phone number on the box to stop working. The next board that needs 170 volts and nothing more gets to find out how well that packaging held up.
