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| PartNumber | 3-644615-4 | 3-644615-2 | 3-644615-3 |
| Description | Headers & Wire Housings HDR 04P VRT F-LOCK SQ | Headers & Wire Housings 02P MTA156 POL HDR ASSY LF | Headers & Wire Housings 03P MTA156 POL HDR ASSY LF |
| Manufacturer | TE Connectivity | TE Connectivity AMP Connectors | TE Connectivity AMP Connectors |
| Product Category | Headers & Wire Housings | Rectangular Connectors - Headers, Male Pins | Rectangular Connectors - Headers, Male Pins |
| RoHS | Y | - | - |
| Product | Headers | - | - |
| Type | Unshrouded | - | - |
| Number of Positions | 4 Position | 2 | 3 |
| Pitch | 3.96 mm | 0.156" (3.96mm) | 0.156" (3.96mm) |
| Number of Rows | 1 Row | 1 | 1 |
| Mounting Style | - | - | - |
| Termination Style | Through Hole | - | - |
| Mounting Angle | Straight | - | - |
| Contact Gender | Pin (Male) | - | - |
| Contact Plating | Tin | - | - |
| Termination Post Length | 3.18 mm | - | - |
| Series | MTA-156 | MTA-156 | MTA-156 |
| Tradename | MTA | - | - |
| Packaging | Bulk | Bulk | Bulk |
| Application | Wire-to-Board | - | - |
| Current Rating | 7 A | - | - |
| Housing Material | Polyester | - | - |
| Voltage Rating | 600 V | - | - |
| Brand | TE Connectivity / AMP | - | - |
| Contact Material | Copper Alloy | - | - |
| Flammability Rating | UL 94 V-0 | - | - |
| Latching Type | Polarized Lock | - | - |
| Product Type | Headers & Wire Housings | - | - |
| Factory Pack Quantity | 500 | - | - |
| Subcategory | Headers & Wire Housings | - | - |
| Part # Aliases | 3-644615-4 | - | - |
| Color | - | Natural | Natural |
| Termination | - | Solder | Solder |
| Mounting Type | - | Through Hole | Through Hole |
| Features | - | Board Guide, Polarizing Key | Board Guide, Polarizing Key |
| Connector Type | - | Header, Unshrouded | Header, Unshrouded |
| Contact Finish | - | Tin | Tin |
| Contact Finish Thickness | - | 150μin (3.81μm) | 150μin (3.81μm) |
| Number of Positions Loaded | - | All | All |
| Contact Type | - | Male Pin | Male Pin |
| Row Spacing | - | - | - |
| Fastening Type | - | Friction Lock | Friction Lock |
| Contact Mating Length | - | 0.450" (11.43mm) | 0.450" (11.43mm) |