Molex Micro-Fit 3.0 Series Straight Through Hole PCB Header, 4 Contact(s), 3 mm Pitch, 2 Row, Shrouded

RS Stock No.:: 161-9392
Mfr. Part No.:: 43045-0428
Brand:: Molex

Molex Micro-Fit 3.0 Series Straight Through Hole PCB Header, 4 Contact(s), 3 mm Pitch, 2 Row, Shrouded

This image is representative of the product range

Bulk discount available

Subtotal (1 tray of 2232 units)*

$3,147.12

(exc. GST)

$3,615.84

(inc. GST)

FREE delivery for orders over $60.00 ex GST

Temporarily out of stock

Shipping from 13 April 2026

Need more? Click ‘Check delivery dates’ to find extra stock and lead times.

Units	Per unit	Per Tray*
2232 - 2232	$1.41	$3,147.12
4464 - 6696	$1.375	$3,069.00
8928 +	$1.354	$3,022.13

*price indicative

RS Stock No.:: 161-9392
Mfr. Part No.:: 43045-0428
Brand:: Molex

Specifications

Technical data sheets

Legislation and Compliance

Product Details

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	Molex
	Product Type	PCB Header
	Series	Micro-Fit 3.0
	Current	5A
	Pitch	3mm
	Housing Material	Thermoplastic
	Number of Contacts	4
	Number of Rows	2
	Orientation	Straight
	Shrouded/Unshrouded	Shrouded
	Mount Type	Through Hole
	Connector System	Wire-to-Board
	Contact Material	Brass
	Contact Plating	Gold
	Termination Type	Solder
	Row Pitch	3mm
	Minimum Operating Temperature	-40°C
	Maximum Operating Temperature	125°C
	Contact Gender	Male
	Standards/Approvals	No
	Mating Pin Length	3mm
	Voltage	250 V

	Select all
	Brand Molex
	Product Type PCB Header
	Series Micro-Fit 3.0
	Current 5A
	Pitch 3mm
	Housing Material Thermoplastic
	Number of Contacts 4
	Number of Rows 2
	Orientation Straight
	Shrouded/Unshrouded Shrouded
	Mount Type Through Hole
	Connector System Wire-to-Board
	Contact Material Brass
	Contact Plating Gold
	Termination Type Solder
	Row Pitch 3mm
	Minimum Operating Temperature -40°C
	Maximum Operating Temperature 125°C
	Contact Gender Male
	Standards/Approvals No
	Mating Pin Length 3mm
	Voltage 250 V

Molex Micro-Fit 3.0 Straight Pin PCB Header, 4 Way, 3mm Pitch - 43045 Series - 43045-0428

This straight pin header from Molex makes it simple to connect wires to your printed circuit board (PCB). It has a through-hole termination method that's compatible with surface mount technology (SMT) for ease of installation. You can also solder it in place for a permanent, durable connection. The header connects up to four circuits arranged in two rows, which helps maximise space on your PCB. It can withstand a maximum current of 5A per contact and a voltage of up to 600V, so is safe to use in high-power PCB applications.

• Gold-plated brass contact material for excellent conductivity and corrosion resistance

• Durable thermoplastic resin material protects the header from damage for long-lasting performance

• Dual-beam terminals are fully isolated to ensure dependable electrical flow

• Positive latching mechanism for a secure connection

• PCB polarising peg ensures accurate alignment and positioning on the PCB

Applications

• Security systems

• Telecommunications

• Medical equipment manufacturing

• Automotive industry

Can this header withstand extreme temperatures?

This header has a broad operating temperature range of -40°C to +105°C, so it's suitable for use in both very hot and very cold environments.

Molex Micro-Fit 3.0 3.0mm Dual Row PCB Headers with PCB Polarizing Peg, 43045 Series

Micro-Fit 3.0 3mm pitch wire to board dual row PCB headers which form part of a compact power connector system providing a low to mid-range power distribution solution. With the ability to carry up to 5A of current, Micro-Fit 3.0 connectors have one of the highest current carrying abilities in the smallest footprints available. These Micro-Fit 3.0 PCB headers incorporate positive latching in the form of a locking ramp on the housing for secure mating and to prevent accidental disconnection. The housings are made of high-temperature UL 94V-0 Liquid Crystal Polymer that can withstand temperatures of up to 265°C during the IR reflow soldering process. The through hole mounting versions of these Micro-Fit 3.0 headers are also SMT compatible which means a reduction in process requirements and costs. To help position and align these Micro-Fit 3.0 headers to the PCB board, PCB polarising pegs are incorporated into the connector design. part numbers ending in xx12, xx13 and xx14 also feature kinked solder legs for additional PCB retention. The contacts of these Micro-Fit 3.0 headers are fully isolated within the housings to reduce arcing. Tin or a choice of two thicknesses of gold contact platings are available to keep down costs.

Features and Benefits

• High current carrying capacity in a small footprint

• High temperature housings for IR reflow soldering

• Through hole versions SMT compatible

• Positive latching for secure mating connection

• Fully isolated dual beam terminals for reliable electrical performance and contact

• PCB polarising pegs for alignment and positioning on PCB;• Kinked solder legs for additional PCB retention;• Glow Wire Compliant

Product Application Information

These Micro-Fit 3.0 header connectors are suitable for use in a wide range of low to mid power applications including the following:

Military COTS (Commercial Off The Shelf)

Solar power

Consumer products (dryers, freezers, fridges, washing machines)

Data communications (routers, servers)

Medical

Telecommunications

Gaming terminals