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0039012126 — Molex product photo
Molex

Molex Mini-Fit Jr 0039012126, 12-Position Plug Housing

MPN0039012126
Active

Molex Mini-Fit Jr 5559 series, 0039012126, plug housing, 12 positions, 2 rows, 4.20mm pitch, 4.20mm row spacing, panel mount snap-in, crimp termination, locking ramp, ivory PA66, -40°C to 105°C.

$1.2000Ref. price · indicative, final on quote
0039012126 datasheet
StockContact for availability
Lead timeIn Stock wk
MOQ1 pcs
  • New & original stockTraceable channels only — no mixed lots, no re-taped reels.
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Specifications

0039012126 Technical Specifications
ParameterValue
SeriesMini-Fit Jr 5559
GenderMale Pin
Mounting typePanel Mount, Snap-In
Connector typePlug
Fastening typeLocking Ramp
Operating temperature-40°C ~ 105°C
ColorIvory
Insulation materialPolyamide (PA66), Nylon 6/6
NoteContacts Not Included
Pitch0.165\" (4.20mm)
PackageBulk
Row spacing0.165\" (4.20mm)
Rows2
Contact terminationCrimp
Positions12

Product details

It carries a 4.20mm pitch and matching 4.20mm row spacing — the standard Mini-Fit Jr footprint that mates with the 5557 receptacle housing.

You need the matching 5556-series male crimp terminals (typically Molex 44476-1112 or equivalent for 18-24 AWG) to populate the cavities. For a 12-circuit harness, that is twelve terminals, twelve wire seals if the application is sealed, and the 5557 receptacle on the other end.

Panel-Mount Fit and Board Layout

This is a panel-mount, snap-in plug — it clips into a rectangular cutout in the enclosure wall or a bulkhead, not onto a PCB. The locking ramp faces outward from the panel; make sure the cutout orientation matches the ramp direction so the latch engages when the receptacle is pushed home.

It is a current-production part from the Mini-Fit Jr 5559 line, which is one of Molex's highest-volume power connector families.

Frequently asked questions

Where can I buy Molex 0039012126 and get a price?

Submit a quote request with your target quantity and we will confirm current pricing and availability.

What contacts are compatible with Molex 0039012126?

The 0039012126 accepts 5556-series male crimp terminals, typically Molex 44476-1112 for 18-24 AWG wire. The housing does not include contacts — you must order the terminals separately to build a complete harness.

Is 0039012126 obsolete or active?

The 0039012126 is an active, current-production part. It is ROHS3 compliant and still widely specified in new harness designs.