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| PartNumber | 3-643818-4 | 3-643818-3 | 3-643818-2 |
| Description | Headers & Wire Housings CLOSED WITH TABS 4P L.R. yellow 20 AWG | Headers & Wire Housings CLOSED WITH TABS 3P L.R. yellow 20 AWG | Headers & Wire Housings CLOSED WITH TABS 2P L.R. yellow 20 AWG |
| Manufacturer | TE Connectivity | TE Connectivity | TE Connectivity AMP Connectors |
| Product Category | Headers & Wire Housings | Headers & Wire Housings | Rectangular Connectors - Free Hanging, Panel Mount |
| RoHS | Y | Y | - |
| Product | Wire Housings | Wire Housings | - |
| Type | Receptacle Assembly | Receptacle Assembly | - |
| Number of Positions | 4 Position | 3 Position | 2 |
| Pitch | 3.96 mm | 3.96 mm | 0.156" (3.96mm) |
| Number of Rows | 1 Row | 1 Row | 1 |
| Mounting Style | Free Hanging | Free Hanging | - |
| Termination Style | IDC | IDC | - |
| Contact Gender | Socket (Female) | Socket (Female) | - |
| Contact Plating | Tin | Tin | - |
| Series | MTA-156 | MTA-156 | MTA-156 |
| Tradename | MTA | MTA | - |
| Packaging | Bulk | Bulk | Bulk |
| Current Rating | 7 A | 7 A | - |
| Housing Material | Nylon | Nylon | - |
| Voltage Rating | 600 VAC | 600 VAC | - |
| Brand | TE Connectivity / AMP | TE Connectivity / AMP | - |
| Contact Material | Copper Alloy | Copper Alloy | - |
| Latching Type | Locking Ramp | Locking Ramp | - |
| Product Type | Headers & Wire Housings | Headers & Wire Housings | - |
| Factory Pack Quantity | 250 | 500 | - |
| Subcategory | Headers & Wire Housings | Headers & Wire Housings | - |
| Wire Gauge | 20 | 20 | 20 AWG |
| Part # Aliases | 3-643818-4 | 3-643818-3 | - |
| Unit Weight | 0.068467 oz | 0.050759 oz | - |
| Color | - | - | Yellow |
| Mounting Type | - | - | Free Hanging (In-Line) |
| Features | - | - | Closed End, Polarizing Key |
| Connector Type | - | - | Receptacle |
| Contact Finish | - | - | Tin |
| Contact Finish Thickness | - | - | 80μin (2.03μm) |
| Contact Type | - | - | Female Socket |
| Row Spacing | - | - | - |
| Fastening Type | - | - | Locking Ramp |
| Cable Termination | - | - | IDC |
| Wire Type | - | - | Discrete or Ribbon Cable |