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| PartNumber | 851-87-004-20-001101 | 851-87-004-30-001191 | 851-87-004-10-001101 |
| Description | Headers & Wire Housings | Headers & Wire Housings | Headers & Wire Housings |
| Manufacturer | Preci-dip | Preci-dip | Preci-dip |
| Product Category | Headers & Wire Housings | Headers & Wire Housings | Headers & Wire Housings |
| RoHS | Y | Y | Y |
| Product | Headers | - | Headers |
| Type | Socket | - | Socket |
| Number of Positions | 4 Position | - | 4 Position |
| Pitch | 1.27 mm | - | 1.27 mm |
| Number of Rows | 1 Row | - | 1 Row |
| Mounting Style | Straight Pin | - | Straight Pin |
| Termination Style | Through Hole | - | Through Hole |
| Mounting Angle | Right Angle | - | Straight |
| Contact Gender | Socket (Female) | - | Socket (Female) |
| Contact Plating | Gold | - | Gold |
| Termination Post Length | 3 mm | - | 2.3 mm |
| Series | 851 | - | 851 |
| Contact Type | - | - | - |
| Current Rating | 1 A | - | 1 A |
| Housing Material | Polyester (PCT) | - | Polyester (PCT) |
| Brand | Preci-dip | Preci-dip | Preci-dip |
| Contact Material | Beryllium Copper | - | Beryllium Copper |
| Flammability Rating | UL 94 V-0 | - | UL 94 V-0 |
| Row Spacing | - | - | - |
| Housing Gender | - | - | - |
| Maximum Operating Temperature | + 125 C | - | + 125 C |
| Minimum Operating Temperature | - 55 C | - | - 55 C |
| Product Type | Headers & Wire Housings | Headers & Wire Housings | Headers & Wire Housings |
| Factory Pack Quantity | 1500 | 1000 | 2000 |
| Subcategory | Headers & Wire Housings | Headers & Wire Housings | Headers & Wire Housings |
| Unit Weight | 0.005062 oz | - | 0.004580 oz |
| Packaging | - | Tube | - |