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Molex 430451819

Molex Micro-Fit 3.0 430451819, 18-Pos SMT Header, 3mm Pitch

MPN430451819
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Molex Micro-Fit 3.0 430451819, 18-position dual-row SMT header, 3.00mm pitch, 8A per circuit, 600V, gold mating contacts, shrouded 4-wall with locking ramp, solder retention, -40°C to 105°C, UL94 V-0.

$7.0Ref. price · indicative, final on quote
Molex 430451819 datasheet (PDF)
RoHSROHS3 Compliant
SeriesMicro-Fit 3.0 43045
Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for stock & sourcing questions
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Jul 2026

Specifications

430451819 key specifications
ParameterValue
SeriesMicro-Fit 3.0 43045
TypeMale Pin
MountingSurface Mount
Connector typeHeader
Fastening typeLocking Ramp
Voltage rating600V
Current rating8A
Operating temperature-40°C ~ 105°C
Contact materialBrass
Insulation colorBlack
Insulation height0.390\" (9.91mm)
Insulation materialLiquid Crystal Polymer (LCP), Glass Filled

All specifications

430451819 additional specifications
ParameterValue
Material flammability ratingUL94 V-0
StyleBoard to Cable/Wire
PackageTape & Reel (TR); Cut Tape (CT)
FeaturesSolder Retention
ShroudingShrouded - 4 Wall
TerminationSolder
ApplicationsAutomotive, General Purpose, Industrial, Medical, Telecommunications
Contact shapeSquare
Rows2
Pitch0.118\" (3.00mm)
Positions18
Row spacing - mating0.118\" (3.00mm)
Contact finish - postTin
Contact finish - matingGold
Contact finish thickness - post100.0µin (2.54µm)
Contact finish thickness - mating15.0µin (0.38µm)

Product details

18-Position SMT Header for Wire-to-Board Power

The Molex 430451819 is an 18-position, dual-row surface-mount header from the Micro-Fit 3.0 43045 series. It connects board-side circuitry to a wire harness via the matching Micro-Fit 3.0 receptacle housing and crimp terminals.

At 18 positions loaded, every pin is present; there are no optional voids. The 600 V rating and UL94 V-0 housing confirm the connector is rated for use inside equipment enclosures where flame retardance is required.

How It Compares: 430451819 vs 430451818

The 430451819 carries 18 positions against the 16 positions of the 430451818 at the same 3.00 mm pitch and dual-row layout. The difference is two circuits on the same footprint length — the 18-position version extends the row by one pair of contacts. All other key specs (8 A, 600 V, gold mating plating, shrouded 4-wall, locking ramp, SMT with solder retention) are identical. Choose the position count that matches your circuit count exactly.

Frequently asked questions

What is the pitch of Molex 430451819?

The mating pitch is 0.118" (3.00 mm), with the same 0.118" (3.00 mm) row spacing for the dual-row layout.

What is the current rating of Molex 430451819?

The header is rated 8 A per circuit at 600 V, with gold-plated mating contacts and tin-plated solder tails.

Is Molex 430451819 RoHS compliant?

Yes, it is ROHS3 compliant. The housing material is UL94 V-0 rated LCP, glass-filled.

What is the difference between Molex 430451819 and 430451818?

The 430451819 has 18 positions; the 430451818 has 16 positions. Both share the same 3.00 mm pitch, dual-row layout, 8 A/600 V rating, gold mating contacts, shrouded 4-wall design, locking ramp, and SMT termination with solder retention.