Molex Micro-Fit 3.0 Series Right Angle Surface PCB Header, 4 Contact(s), 3 mm Pitch, 2 Row, Shrouded

RS Stock No.:: 189-1372
Mfr. Part No.:: 43045-0409
Brand:: Molex

Molex Micro-Fit 3.0 Series Right Angle Surface PCB Header, 4 Contact(s), 3 mm Pitch, 2 Row, Shrouded

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Subtotal (1 reel of 200 units)*

$409.00

(exc. GST)

$450.00

(inc. GST)

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In Stock

Plus 200 unit(s) shipping from 14 September 2026
Plus 3,200 unit(s) shipping from 21 September 2026

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Units	Per unit	Per Reel*
200 - 200	$2.045	$409.00
400 - 1800	$2.009	$401.80
2000 +	$1.808	$361.60

*price indicative

RS Stock No.:: 189-1372
Mfr. Part No.:: 43045-0409
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	8.5A
	Pitch	3mm
	Housing Material	Thermoplastic
	Number of Contacts	4
	Number of Rows	2
	Orientation	Right Angle
	Shrouded/Unshrouded	Shrouded
	Connector System	Wire-to-Board
	Mount Type	Surface
	Contact Plating	Tin
	Contact Material	Brass
	Termination Type	Solder
	Minimum Operating Temperature	-40°C
	Row Pitch	3mm
	Maximum Operating Temperature	105°C
	Contact Gender	Male
	Standards/Approvals	EU RoHS, Low-Halogen, REACH SVHC, UL E29179
	Mating Pin Length	3mm
	Voltage	600V

	Select all
	Brand Molex
	Product Type PCB Header
	Series Micro-Fit 3.0
	Current 8.5A
	Pitch 3mm
	Housing Material Thermoplastic
	Number of Contacts 4
	Number of Rows 2
	Orientation Right Angle
	Shrouded/Unshrouded Shrouded
	Connector System Wire-to-Board
	Mount Type Surface
	Contact Plating Tin
	Contact Material Brass
	Termination Type Solder
	Minimum Operating Temperature -40°C
	Row Pitch 3mm
	Maximum Operating Temperature 105°C
	Contact Gender Male
	Standards/Approvals EU RoHS, Low-Halogen, REACH SVHC, UL E29179
	Mating Pin Length 3mm
	Voltage 600V

Molex Micro-Fit 3.0 Series PCB Header, 3.0mm Pitch, 4 Contacts - 43045-0409

This PCB Header is designed for reliable surface mount applications. With dimensions suited for various circuit requirements, it features a right-angle orientation and a dual-row configuration, facilitating space-efficient layouts in compact electronic devices.

Features & Benefits

• Shrouded design ensures secure connections and prevents contamination

• High current rating of 8.5A supports demanding requirements

• Compatible with wire-to-board configurations for versatile use

• Glow wire compliant for enhanced safety and heat resistance

• Made from high-temperature thermoplastic for durability

• Surface mount termination method simplifies assembly processes

Applications

• Used for power distribution in electrical appliances

• Ideal for connecting components in automation and robotics

• Recommended for consumer electronics for reliable wiring interfaces

• Essential for industrial control panels for efficient circuitry

• Suitable for telecommunications equipment requiring durable connections

What is the maximum operating temperature for this connector?

It operates effectively within a temperature range of -40 to +105 °C, making it suitable for a variety of environments where temperature fluctuations occur.

How does the glow wire compatibility affect safety?

The glow wire compatibility indicates that the connector can withstand high temperatures without igniting, ensuring safe operation in household and similar electrical appliances.

What materials are used for the contacts and plating?

The contacts are made of brass and plated with tin, providing good electrical conductivity and protection against corrosion, enhancing overall connector performance.

What testing does the connector undergo for compliance?

It is tested according to international standards, including IEC 60695 for heat and fire resistance, ensuring it meets stringent safety and quality criteria.

How many mating cycles can be expected before wear occurs?

The connector offers a durability of up to 30 mating cycles, ensuring long-lasting performance in repeated connections.

Molex Micro-Fit 3.0 3.0mm Dual Row SMT Headers with Solder Tabs, 43045 Series

Micro-Fit 3.0 3mm pitch wire to board SMT 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. To secure these Micro-Fit 3.0 SMT headers to the PCB board, solder tabs are incorporated into the connector design. 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

• Positive latching for secure mating connection

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

• Solder tabs for secure connection to PCB

• 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