| PartNumber | 39-01-2120 | 39-01-2105 | 39-01-2100 |
| Description | Headers & Wire Housings 12 CKT RCPT HOUSING | Headers & Wire Housings 10 CRKT HOUSING | Headers & Wire Housings 10 CKT RCPT HOUSING |
| Manufacturer | Molex | - | - |
| Product Category | Headers & Wire Housings | - | - |
| RoHS | Y | - | - |
| Product | Wire Housings | - | - |
| Type | Receptacle Housing | - | - |
| Number of Positions | 12 Position | - | - |
| Pitch | 4.2 mm | - | - |
| Number of Rows | 2 Row | - | - |
| Mounting Style | Free Hanging | - | - |
| Termination Style | Crimp | - | - |
| Mounting Angle | - | - | - |
| Contact Gender | - | - | - |
| Contact Plating | - | - | - |
| Series | 5557 | - | - |
| Tradename | Mini-Fit Jr. | - | - |
| Packaging | Bulk | - | - |
| Accessory Type | - | - | - |
| Contact Type | Socket | - | - |
| Current Rating | 13 A | - | - |
| Housing Material | Nylon | - | - |
| Voltage Rating | 600 V | - | - |
| Brand | Molex | - | - |
| Contact Material | - | - | - |
| Flammability Rating | UL 94 V-2 | - | - |
| Row Spacing | 4.2 mm | - | - |
| Housing Gender | Female | - | - |
| Maximum Operating Temperature | + 105 C | - | - |
| Minimum Operating Temperature | - 40 C | - | - |
| Product Type | Headers & Wire Housings | - | - |
| Factory Pack Quantity | 200 | - | - |
| Subcategory | Headers & Wire Housings | - | - |
| Part # Aliases | 0039012120 39012120 5557-12R | - | - |
| Unit Weight | 0.084658 oz | - | - |