Product Overview
Jim-pak 830P5K Trimmer Potentiometer: 5K Ohm, Fifteen Turns, Still Sealed on the Card
Condition
New old stock. The trimmer is still sealed inside its original Jim-pak blister card, printed 830P5K, 5K 15-Turn 3/4 Watt, POTENTIOMETERS, over the blue and yellow Jim-pak electronic components logo. The blister is bonded to the card and has not been opened, and the pegboard hang hole is intact. The card carries its years honestly: light surface scuffing across the yellow, a faint scratch on the front, and soft creasing at the top corners. Through the clear blister the body reads 43P502T615 with 5K 0108 below it. Three silver pins stand in a single row, straight and unbent, with a brass-colored adjustment screw at one end of the body. Against the cutting mat grid in the photos the body measures approximately 3/4 inch long.
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Product Overview
The 830P5K is a rectangular multiturn trimmer potentiometer, rated 5K ohm and 3/4 watt on its own card, set by fifteen turns of a screw at one end of the body instead of a single sweep. Those fifteen turns spread the whole 0 to 5K range across a long screw travel, which is exactly what you want when you are walking in a bias point, a reference voltage, or a bridge balance and a single-turn control moves too far per degree of rotation. Three straight pins in one row drop into a standard through-hole footprint. Under the blister the body carries the OEM marking 43P502T615 with 5K 0108, and 502 is the standard three-digit resistance code for 5,000 ohms, so the body and the card agree on the value. Jim-pak packaged components on yellow pegboard cards like this one, punched for a hook and sealed at the factory, and this card is still closed.
Key Features
- Resistance: 5K ohm, printed on the card and coded 502 on the body
- Adjustment: 15 turns, screw at one end of the body
- Power rating: 3/4 watt as printed on the card
- Body marking: 43P502T615 with 5K 0108
- Terminals: three straight in-line pins for through-hole mounting
- Packaging: original Jim-pak blister card, still sealed, hang hole intact
- Stock: one piece, the exact card shown in the photos
- Tolerance, linearity, and temperature coefficient: not confirmed - verify against the datasheet before use
Applications
- Audio restorer setting bias or channel balance on a vintage amplifier board that calls for a 5K trim
- Bench technician dialing a reference voltage on a rebuilt linear power supply
- Ham operator trimming a homebrew keyer or VFO control where one turn is far too coarse
- Collector or shop owner who wants a period-correct sealed Jim-pak card for a display or for drawer stock
Frequently Asked Questions
What do the markings on the body mean?
The body is marked 43P502T615 with 5K 0108 underneath. The 502 is the standard three-digit resistance code for 5,000 ohms, which matches the 5K on the card. We have not traced the rest of that string or the 0108 to a manufacturer datasheet, so treat them as the markings you see and nothing more. Not confirmed - verify against the datasheet before use.
Has the card been opened or the part tested?
No. The blister is still sealed to the card in all three photos, and we left it that way, so the part has not been on a meter here. With a sealed piece like this the card printing and the body markings are the spec, and the photos show both. If you would rather have it tested than sealed, tell us before you order and we will talk it through.
Why fifteen turns instead of a single-turn trimmer?
A single-turn pot puts the entire 5K across about 270 degrees of rotation, so a small slip of the screwdriver is a big jump in resistance. Fifteen turns stretch the same range out so each turn moves you a fraction of it, which is the difference between nudging a setpoint and overshooting it. That is why multiturn trimmers show up in calibration and bias circuits rather than volume controls.
Why buy this one sealed card instead of chasing a surplus lot of trimmers?
There is exactly one of these here, photographed from three angles, still sealed on its original card, and sold as a single piece. A surplus lot or an auction pallet of assorted trimpots is a bag of unknown values in unknown condition that you sort and meter yourself before you find out whether a 5K, 15-turn part is even in there. This one is identified on the card, identified again on the body, and you can see it before you buy it. Shipping is $8 flat rate and free once your order passes $28, and orders leave our Idaho warehouse the same or the next business day.
Fifteen turns of screw travel, sealed behind a yellow blister since parts came off a pegboard hook and went home in a paper bag. Cut the card open or leave it closed on a shelf - either way, the next quarter turn belongs to you.
