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| PartNumber | TT21NGPC1 | TT21NGPC9T1/4 | TT21NGPC104 |
| Description | Toggle Switches DP ON-NONE-ON PCB | Toggle Switches DP ON-NONE-ON PCB | Toggle Switches TOG SW W/GOLD PC |
| Manufacturer | TE Connectivity | TE Connectivity | TE Connectivity |
| Product Category | Toggle Switches | Toggle Switches | Toggle Switches |
| RoHS | N | N | - |
| Illuminated | Non-Illuminated | Non-Illuminated | - |
| Illumination Color | - | - | - |
| Lamp Type | - | - | - |
| Contact Form | DPDT | DPDT | DPDT |
| Switch Function | ON - NONE - ON | ON - NONE - ON | ON - NONE - ON |
| Mounting Style | Through Hole | Through Hole | Through Hole |
| Termination Style | Solder Pin | Solder Pin | Solder Pin |
| Voltage Rating AC | 20 VAC | 20 VAC | 20 V |
| Voltage Rating DC | 20 VDC | 20 VDC | 20 VDC |
| Power Rating | 400 mVA | 400 mVA | 0.4 VA |
| Actuator | Bat | Bat | Bat |
| Terminal Seal | Sealed | Sealed | Sealed |
| Contact Plating | Gold over Nickel | Gold over Nickel | Gold over Nickel |
| Packaging | Bulk | - | Bulk |
| Color | Black | Black | - |
| Housing Material | Thermoplastic (TP) | Thermoplastic (TP) | - |
| Mounting Angle | Vertical | Vertical | - |
| Series | TT (Tiny) | TT (Tiny) | TT (Tiny) |
| Type | Switch | Switch | - |
| Brand | TE Connectivity / Alcoswitch | TE Connectivity / Alcoswitch | - |
| Contact Material | Copper Alloy | Copper Alloy | - |
| Flammability Rating | UL 94 V-0 | UL 94 V-0 | - |
| Actuator Style | Bat | Bat | - |
| Life | 80000 Cycles | 80000 Cycles | 80000 Cycles |
| Maximum Operating Temperature | + 85 C | + 85 C | - |
| Minimum Operating Temperature | - 30 C | - 30 C | - |
| Product Type | Toggle Switches | Toggle Switches | - |
| Factory Pack Quantity | 25 | 25 | - |
| Subcategory | Switches | Switches | - |
| Part # Aliases | 1437562-3 | 1-1437562-1 | - |
| Bushing Size | - | 1/4-40 | - |
| Part Aliases | - | - | 1-1825219-1 |