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| PartNumber | 1571563-4 | 1571563-2 | 1571563-1 |
| Description | Tactile Switches FSM4JSMAATR | Tactile Switches TACT SWITCH SMT | Pushbutton Switches TACT SWITCH SMT |
| Manufacturer | TE Connectivity | TE Connectivity | - |
| Product Category | Tactile Switches | Tactile Switches | - |
| Illuminated | Non-Illuminated | Non-Illuminated | - |
| Illumination Color | - | - | - |
| Lamp Type | - | - | - |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Actuator | Round | Round | - |
| Switch Function | OFF - (ON) | OFF - (ON) | - |
| Current Rating | 50 mA | 50 mA | - |
| Voltage Rating DC | 24 VDC | 24 VDC | - |
| Voltage Rating AC | - | - | - |
| Contact Form | SPST | SPST | - |
| Termination Style | Solder Pin | Solder Pin | - |
| Height | 5 mm | 5 mm | - |
| Series | FSMJSMA | FSMJSMA | - |
| Contact Plating | Silver | Silver | - |
| Brand | TE Connectivity | TE Connectivity / Alcoswitch | - |
| Product Type | Tactile Switches | Tactile Switches | - |
| Factory Pack Quantity | 1200 | 1200 | - |
| Subcategory | Switches | Switches | - |
| Part # Aliases | 1571563-4 | 1571563-2 | - |
| RoHS | - | Y | - |
| Packaging | - | Reel | - |
| Unit Weight | - | 0.009665 oz | - |