| PartNumber | 187A28 | 187A24 | 187A20 |
| Description | Power Transformers Single Primary 115V 2.4VA, 28V CT @0.08A | Power Transformers Single Primary 115V 2.4VA, 24V CT @0.1A | Power Transformers Single Primary 115V 2.4VA, 20V CT @0.12A |
| Manufacturer | Hammond Manufacturing | Hammond Manufacturing | Hammond Manufacturing |
| Product Category | Power Transformers | Power Transformers | Power Transformers |
| Series | 187 | 187 | 187 |
| Type | Laminated Core | Laminated Core | Laminated Core |
| Termination Style | Solder, Quick Connect | Solder, Quick Connect | Solder, Quick Connect |
| Mounting Type | Chassis Mount | Chassis Mount | Chassis Mount |
| Size Dimension | 52.32mm L x 36.45mm W | 52.32mm L x 36.45mm W | 52.32mm L x 36.45mm W |
| Current Output Max | 80mA | 100mA | 120mA |
| Power Max | 2.4 VA | 2.4 VA | 2.4 VA |
| Voltage Isolation | 2000Vrms | 2000Vrms | 2000Vrms |
| Height Seated Max | 29.97mm | 29.97mm | 29.97mm |
| Voltage Primary | 115V | 115V | 115V |
| Voltage Secondary Full Load | 28V | 24V | 20V |
| Primary Winding s | Single | Single | Single |
| Secondary Winding s | Single | Single | Single |
| Center Tap | Yes | Yes | Yes |