| PartNumber | 187A120 | 187A12 | 187A10 |
| Description | Power Transformers Single Primary 115V 2.4VA, 120V CT @.02A | Power Transformers Single Primary 115V 2.5VA/12.6V CT @.19A | Power Transformers Single Primary 115V 2.5VA, 10V CT @0.25A |
| Manufacturer | Hammond | Hammond Manufacturing | Hammond Manufacturing |
| Product Category | Power Transformers | Power Transformers | Power Transformers |
| RoHS | Y | - | - |
| Product | Transformer | Power Transformers | - |
| Primary Voltage Rating | 115 VAC | 115 V | - |
| Secondary Voltage Rating | 120 VAC CT | 12.6 V | - |
| Power Rating | 2.4 VA | 2.5 VA | - |
| Secondary Current Rating | 20 mA | - | - |
| Mounting Style | Chassis | Chassis | - |
| Primary Winding | Single Primary Winding | Single Primary Winding | - |
| Secondary Winding | Single Secondary Winding | Single Secondary Winding | - |
| Length | 52.32 mm | 52.32 mm | - |
| Width | 26.92 mm | - | - |
| Height | 29.97 mm | 29.97 mm | - |
| Series | 186-187 | 187 | 187 |
| Operating Frequency | 50 Hz, 60 Hz | - | - |
| Packaging | Tube | Tube | - |
| Termination Style | Quick Connects | Solder, Quick Connect | Solder, Quick Connect |
| Type | Low Voltage, Connect Terminals | Laminated Core | Laminated Core |
| Brand | Hammond Manufacturing | - | - |
| Product Type | Power Transformers | - | - |
| Factory Pack Quantity | 1 | - | - |
| Subcategory | Transformers | - | - |
| Unit Weight | 4.639996 oz | 4.640048 oz | - |
| Mounting Type | - | Chassis Mount | Chassis Mount |
| Size Dimension | - | 52.32mm L x 36.45mm W | 52.32mm L x 36.45mm W |
| Current Output Max | - | 190mA | 250mA |
| Power Max | - | 2.5 VA | 2.5 VA |
| Voltage Isolation | - | 2000Vrms | 2000Vrms |
| Height Seated Max | - | 29.97mm | 29.97mm |
| Voltage Primary | - | 115V | 115V |
| Voltage Secondary Full Load | - | 12.6V | 10V |
| Primary Winding s | - | Single | Single |
| Secondary Winding s | - | Single | Single |
| Center Tap | - | Yes | Yes |