Molex Mini-Fit Jr. Series Vertical Through Hole PCB Header, 20 Contact(s), 4.2mm Pitch, 2 Row(s), Shrouded
- RS Stock No.:
- 172-8923
- Mfr. Part No.:
- 39-28-1203
- Brand:
- Molex
Bulk discount available
Subtotal (1 pack of 5 units)*
£14.08
(exc. VAT)
£16.895
(inc. VAT)
FREE delivery for orders over £50.00
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
- RS Stock No.:
- 172-8923
- Mfr. Part No.:
- 39-28-1203
- Brand:
- Molex
Specifications
Technical Reference
Legislation and Compliance
Product Details
Find similar products by selecting one or more attributes.
Select all | Attribute | Value |
---|---|---|
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 | |
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
• 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
• 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
- Molex Mini-Fit Jr. Series Straight Through Hole PCB Header 4.2mm Pitch Shrouded
- Molex Mini-Fit Jr. Series Straight Through Hole PCB Header 4.2mm Pitch Shrouded
- Molex Mini-Fit Jr. Series Vertical Through Hole PCB Header 4.2mm Pitch Shrouded
- Molex Mini-Fit Jr. Series Vertical Through Hole PCB Header 4.2mm Pitch Shrouded
- Molex Mini-Fit Jr. Series Straight Through Hole PCB Header 4.2mm Pitch Shrouded
- Molex Mini-Fit Jr. Series Straight Through Hole PCB Header 4.2mm Pitch Shrouded
- Molex Mini-Fit Jr. Series Straight Through Hole PCB Header 4.2mm Pitch Shrouded
- Molex Mini-Fit Jr. Series Straight Through Hole PCB Header 4.2mm Pitch Shrouded