| PartNumber | 166J12B | 166J10 | 166J12 |
| Description | Power Transformers Open, Single Primary 117V 12.6CT 1A | Power Transformers FIL RECT | Power Transformers 12.6ct VAC / 1 Amp |
| Manufacturer | Hammond Manufacturing | Hammond Manufacturing | Hammond Manufacturing |
| Product Category | Power Transformers | Power Transformers | Power Transformers |
| Series | 166 | 166 | 166 |
| Type | Laminated Core | Laminated Core | Laminated Core |
| Termination Style | Wire Leads | Wire Leads | Wire Leads |
| Mounting Type | Chassis Mount | Chassis Mount | Chassis Mount |
| Size Dimension | 82.55mm L x 44.45mm W | 71.37mm L x 41.40mm W | 71.37mm L x 41.40mm W |
| Current Output Max | 1A | 1A | 1A |
| Power Max | 12.6 VA | 10 VA | 12.6 VA |
| Voltage Isolation | 2000Vrms | 2000Vrms | 2000Vrms |
| Height Seated Max | 50.80mm | 42.93mm | 42.93mm |
| Voltage Primary | 117V | 115V | 115V |
| Voltage Secondary Full Load | 12.6V | 10V | 12.6V |
| Primary Winding s | Single | Single | Single |
| Secondary Winding s | Single | Single | Single |
| Center Tap | Yes | Yes | Yes |
| Product | - | Power Transformers | Power Transformers |
| Packaging | - | Bulk | Bulk |
| Unit Weight | - | 11.200115 oz | 11.200115 oz |
| Mounting Style | - | Chassis | Chassis |
| Operating Temperature Range | - | 0 C to + 130 C | 0 C to + 130 C |
| Height | - | 42.93 mm | 42.93 mm |
| Length | - | 71.37 mm | 71.37 mm |
| Width | - | 41.4 mm | 41.4 mm |
| Power Rating | - | 10 VA | 12.6 VA |
| Primary Voltage Rating | - | 115 VAC | 115 VAC |
| Secondary Voltage Rating | - | 10 VAC CT | 12.6 VAC CT |
| Secondary Current Rating | - | 1 A | 1 A |
| Primary Winding | - | Single Primary Winding | Single Primary Winding |
| Secondary Winding | - | Single Secondary Winding | Single Secondary Winding |
| Operating Frequency | - | 50 Hz 60 Hz | 50 Hz 60 Hz |