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| Part Number | 187B12 | 187B120 | 187B12-BULK |
| Manufacturer | Hammond Manufacturing | Hammond Manufacturing | Hammond Manufacturing |
| Series | 187 | 187 | 187 |
| Packaging | Box | Box | Bulk |
| Product Status | Active | Active | Active |
| Type | Laminated Core | Laminated Core | - |
| Voltage - Primary | 115V | 115V | 115V |
| Voltage - Secondary (Full Load) | 12.6V | 120V | 12.6V |
| Current - Output (Max) | 500mA | 50mA | 500mA |
| Primary Winding(s) | Single | Single | Single |
| Secondary Winding(s) | Single | Single | Single |
| Center Tap | Yes | Yes | Yes |
| Power - Max | 6.3VA | 6VA | 6.3VA |
| Mounting Type | Chassis Mount | Chassis Mount | Chassis Mount |
| Termination Style | Solder, Quick Connect | Solder, Quick Connect | Solder, Quick Connect |
| Size / Dimension | 60.20mm L x 41.28mm W | 60.20mm L x 41.28mm W | 60.20mm L x 31.75mm W |
| Height - Seated (Max) | 34.80mm | 34.80mm | 34.80mm |
| Voltage - Isolation | 2000Vrms | 2000Vrms | 2000Vrms |
| Weight | 0.68 lb (308.44 g) | 0.5 lb (226.8 g) | - |
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