Molex manufactures the Built-in SIL socket (standard), which features four pins with a contact spacing of 4.2 mm. This component is typically used in electronic applications requiring reliable connections, such as circuit boards and electronic devices. The product is available as a single piece in a bag, ideal for both small projects and larger-scale assembly tasks.
| Type |
Built-in SIL socket (standard) |
| Number of Positions |
4 |
| Pitch |
4.2mm |
| Number of Rows |
2 |
| Application |
Power, Wire-to-Board |
| Base unit of measure |
PC |
| Base unit of measure desc |
piece |
| Board contact surface |
Tin |
| Breakaway |
No |
| Case Material |
Nylon (NL) |
| China ro h s status |
Compliant per SJ/T 11365-2006 |
| Circuits loaded |
4 |
| Circuits maximum |
4 |
| Coating thickness (PCB side) |
2.54µm |
| Color resin |
Natural |
| Colour |
Ecru |
| Comments |
The 5566 header should be used with standard Mini-Fit female terminals. If increased amperage of up to 13A per circuit is needed, please consider using the Mini-Fit Plus HCS family 45750 terminals with 46015 headers; See Molex Product specification PS-5666-001 for current de-rating information. |
| Component type |
PCB Header |
| Connection |
Soldering |
| Connector coating thickness |
0.762µm |
| Contact Plating |
Gold |
| Cross Section |
4.2mm |
| Csa |
LR19980 |
| Current maximum per contact |
9.0A |
| Design registration eligibility |
false |
| Durability mating cycles max |
30 |
| Duration at max process temperature seconds |
5 |
| ELV status |
Not Relevant |
| Engineering number |
5566-04AGS |
| Engineering Part No |
5566-04AGS |
| Engineering Series Name |
MINIFIT JR HDR VERT |
| Engineering Series No |
05566 |
| First mate last break |
No |
| First published date |
2011-08-01 |
| Flammability |
94V-2 |
| G a d s l/ i m d s |
Compliant with Exemption 44; 33 |
| Glow wire capable |
No |
| Guide to mating part |
No |
| H f l h status |
Low-Halogen per IEC 61249-2-21 |
| Keying to mating part |
No |
| Lead free process capability |
WAVE |
| Lock to mating part |
Yes |
| Material metal |
Brass |
| Material plating mating |
Gold |
| Material plating termination |
Matte Tin |
| Material resin |
Nylon |
| Material type |
Finished Goods |
| Max cycles at max process temperature |
1 |
| Maximum Temperature |
+105°C |
| Min. temperature |
-40°C |
| Net weight |
1207.752/mg |
| Nominal Current |
9A |
| Nominal Voltage |
600V |
| Orientation |
Perpendicular (to the PCB) |
| Packaging Type |
Bag |
| Pc tail length |
3.50mm |
| Pcb locator |
Yes |
| Pcb retention |
No |
| Pcb thickness recommended |
1.60mm |
| Pitch mating interface |
4.20mm |
| Pitch termination interface |
4.20mm |
| Plating min mating |
0.762µm |
| Plating min termination |
2.540µm |
| Polarized to mating part |
Yes |
| Polarized to pcb |
Yes |
| Primary pack qty |
700 |
| Process temperature max c |
260 |
| Product name |
Mini-Fit Jr. |
| Product number display |
39290043 |
| Product number hyphen |
39-29-0043 |
| Product number sap |
0039290043 |
| Reach status |
Not Contained per D(2025)7771-DC (04 Feb 2026) |
| Reference series |
5566 |
| Ro h s status |
Compliant per EU 2015/863 |
| Sampleable |
True |
| Shrouded |
Fully |
| Stackable |
No |
| Taxonomy |
PCB Headers and Receptacles |
| Temperature range operating |
-40° to +105°C |
| Termination interface style |
Through Hole |
| Ul |
E29179 |
| Upc |
800754205757 |
| Voltage maximum |
600V |
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