Molex Mini-Fit Jr. Series Vertical Through Hole PCB Header, 20 Contact(s), 4.2mm Pitch, 2 Row(s), Shrouded

View all PCB Headers
Bulk discount available

Subtotal (1 pack of 5 units)*

£14.08

(exc. VAT)

£16.895

(inc. VAT)

Add to Basket
Select or type quantity
In Stock
  • 365 unit(s) ready to ship
  • Plus 40 unit(s) ready to ship from another location
  • Plus 995 unit(s) shipping from 28 October 2025
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units
Per unit
Per Pack*
5 - 95£2.816£14.08
100 - 370£1.96£9.80
375 - 1495£1.884£9.42
1500 +£1.808£9.04

*price indicative

Packaging Options:
RS Stock No.:
172-8923
Mfr. Part No.:
39-28-1203
Brand:
Molex
Find similar products by selecting one or more attributes.
Select all

Brand

Molex

Series

Mini-Fit Jr.

Pitch

4.2mm

Number of Contacts

20

Number of Rows

2

Body Orientation

Vertical

Shrouded/Unshrouded

Shrouded

Connector System

Wire to Board

Mounting Type

Through Hole

Termination Method

Through Hole

Contact Plating

Tin

Contact Material

Brass

Series Number

5566

Current Rating

9A

Voltage Rating

600.0 V

Molex Mini-Fit Jr Series PCB Header, 9A Current Rating, 4.2mm Pitch - 39-28-1203


This PCB header is suitable for power and wire-to-board applications, providing dependable connections in various environments. The Mini-Fit Jr. connectors feature a shrouded design that ensures secure electrical connections and simplifies assembly. Its robust construction makes it suitable for applications in the automation and electronics sectors.

Features & Benefits


• Vertical orientation optimises space and accessibility on PCBs
• Made from durable brass for improved longevity
• 4.2mm pitch compatible with standard wiring setups

Applications


• Designed for use with standard Mini-Fit female terminals for secure mating
• Suitable for integration in automation equipment and consumer electronics
• Utilised in mechanical and electrical assembly for component interlinking

What is the maximum operating temperature of the product?


The device operates within a temperature range of -40°C to +105°C, accommodating various conditions.

Can this product be used with different PCB thicknesses?


It is recommended for use with a PCB thickness of 1.60mm to ensure optimal retention and functionality.

How many mating cycles can be expected from this header?


The connector can endure up to 30 mating cycles, ensuring longevity in repeated use scenarios.

Is there a specific process for soldering this header?


The product supports wave soldering processes with a maximum temperature of 260°C for efficient assembly.

Can this header handle increased amperage beyond its rated capacity?


For higher amperage requirements, it is advisable to consider the Mini-Fit Plus HCS family for enhanced performance.


Molex Minifit Jr.™ Series

Related links