molex mini-fit jr. 12-pin cables & pigtails, built to your length.
39-01-2120 receptacle · 39-01-3123 plug · genuine Molex parts · priced instantly · free 2-day shipping.

Price
the price, before you ask for it.
| build | qty 1, each | qty 10, each | qty 50, each | configure |
|---|---|---|---|---|
| cable, 12 in (305 mm) | $40.50 | $38.48 | $36.45 | configure |
| cable, 24 in (610 mm) | $52.02 | $49.42 | $46.82 | configure |
| pigtail, 12 in (305 mm) flying leads | $40.00order minimum | $30.57 | $28.96 | configure |
| pigtail, 12 in (305 mm) leads with ferrules | $40.34 | $38.32 | $36.31 | configure |
each · free UPS 2-day shipping · $40 order minimum (a smaller order is charged $40) · ships in 8 business days. these are example builds: change the length, pinout and colors in the configurator and it prices the result the same way.
Drawing
the 12 in (305 mm) cable, pin for pin.
pin 1 to pin 1 straight through, 20 AWG in the standard color order. the configurator draws the same diagram for your own configuration, and exports it as a PDF.
Parts
what it's built from.
| receptacle housing | 39-01-2120 | also written 39012120 |
|---|---|---|
| plug housing | 39-01-3123 | also written 39013123 |
| pin contact — standard (tin) | 39-00-0040 | 18–24 AWG |
| socket contact — standard (tin) | 39-00-0038 | 18–24 AWG |
| pin contact — gold-plated | 39-00-0075 | 18–24 AWG |
| socket contact — gold-plated | 39-00-0073 | 18–24 AWG |
| wire | UL1007 | 18, 20, 22, 24 AWG |
part numbers link to Digi-Key, where we buy them — genuine Molex, new, traceable.
Pitch
4.2 mm
Wire
18–24 AWG
Length
5–48 in (127–1219 mm)
Lead time
8 business days
Questions
about the 12-pin molex mini-fit jr..
- can I order just one 12-pin cable?
- yes, there's no minimum quantity. one 12 in (305 mm) 12-pin cable is $40.50, and shipping is free (UPS 2-day). the order minimum is $40. prices drop at 10 and 50 units.
- which half holds the pins?
- the 39-01-2120 receptacle holds socket contacts, and the 39-01-3123 plug holds pin contacts. every contact is crimped with Molex's own specified tooling.
- what wire gauges and lengths?
- 18, 20, 22, 24 AWG UL1007 hook-up wire, any length, 5–48 in (127–1219 mm). the prices above are at 20 AWG.
- how fast does it ship?
- it's built and shipped in 8 business days, then goes out UPS 2-day.
more in the FAQ, including returns (custom cables are non-returnable; defects replaced).
Related
12-pin in other families
ferrules on the loose ends