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2018431040 — Molex product photo

Molex 2018431040 MultiCat Header R/A 4POS 7.4mm

MPN2018431040
Active

Molex MultiCat 201843 series, 2018431040, board-to-cable/wire header, 4 circuits, 7.40mm pitch, right-angle through-hole, shrouded with latch lock, gold-plated mating contacts, 1200V rating, -40°C to 150°C, UL94 V-0.

$22.1700Ref. price · indicative, final on quote
StockContact for availability
MOQ1 pcs
  • New & original stockTraceable channels only — no mixed lots, no re-taped reels.
  • Factory packaging where availableSealed reels, trays and bags; cut quantities always stated on the quote.
  • Photo-verified countsEvery line counted and photographed before the box closes.
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Specifications

2018431040 Technical Specifications
ParameterValue
SeriesMultiCat 201843
GenderMale Pin
Mounting typeThrough Hole, Right Angle
Connector typeHeader
Fastening typeLatch Lock
Voltage rating1200V
Current ratingVaries by Wire Gauge
Operating temperature-40°C ~ 150°C
Contact materialCopper Alloy
Insulation colorBlack
Insulation height0.380\" (9.65mm)
Insulation materialPolyetherimide (PEI)
Material flammability ratingUL94 V-0
StyleBoard to Cable/Wire
PackageTray
FeaturesBoard Guide
ShroudingShrouded - 4 Wall
TerminationSolder
ApplicationsAerospace, Automotive, Industrial, Medical
Contact shapeCircular
Rows1
Pitch0.291\" (7.40mm)
Positions4
Contact finish - postTin
Contact finish - matingGold
Contact finish thickness - post196.9µin (5.00µm)
Contact finish thickness - mating3.90µin (0.099µm)

Product details

7.40mm pitch and 1200V — the clearance story

The 2018431040: The 0.291" (7.40mm) pitch on this single-row header is the mechanical enabler for the 1200V voltage rating — wide contact spacing prevents flashover between adjacent pins in high-potential circuits. This is not a dense signal connector; the pitch and voltage pair it for power distribution in aerospace, automotive, industrial, and medical equipment where isolation margins matter.

Right-angle through-hole and latch lock for vibration duty

The latch lock holds the mating half under shock and vibration — a requirement for automotive and industrial harnesses. The 4-wall shrouding protects the male pins from damage during handling and guides the mating receptacle into alignment before the latch engages.

PEI insulation and 150°C ceiling

Polyetherimide (PEI) housing with UL94 V-0 flammability rating supports the -40°C to 150°C operating range — this header is specified for under-hood automotive, high-temp industrial cabinets, and medical sterilization cycles.

Frequently asked questions

What is the pin pitch of Molex 2018431040?

The mating pitch is 0.291" (7.40mm), single row, 4 positions loaded. This wide pitch supports the 1200V voltage rating and is not compatible with standard 2.54mm or 5.08mm headers.

Does 2018431040 have a latch lock?

Yes, the fastening type is Latch Lock. It provides positive retention with the mating MultiCat receptacle, suitable for vibration-prone environments like automotive and industrial applications.