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| PartNumber | 3FD-228 | 3FD-220 | 3FD-224 |
| Description | Power Transformers 28VCT@.04A 14V@.08A Dual Primary | Power Transformers 20VCT@.055A 10V@.11A Dual Primary | Power Transformers 24VCT@.045A 12V@.09A Dual Primary |
| Manufacturer | Tamura | Tamura | Tamura |
| Product Category | Power Transformers | Power Transformers | Power Transformers |
| Series | 3FD-2xx | 3FD-2xx | 3FD-2xx |
| Product | Power Transformers | Power Transformers | Power Transformers |
| Type | Laminated Core | Laminated Core | Laminated Core |
| Packaging | Tube | - | Tube |
| Mounting Style | Through Hole | Through Hole | Through Hole |
| Termination Style | PC Pin | PC Pin | PC Pin |
| Height | 25.4 mm | 25.4 mm | 25.4 mm |
| Mounting Type | Through Hole | Through Hole | Through Hole |
| Size Dimension | 35.56mm L x 31.00mm W | 35.56mm L x 31.00mm W | 35.56mm L x 31.00mm W |
| Current Output Max | Parallel 80mA, Series 40mA | Parallel 110mA, Series 55mA | Parallel 90mA, Series 45mA |
| Power Max | 1.1 VA | 1.1 VA | 1.1 VA |
| Voltage Isolation | 2500Vrms | 2500Vrms | 2500Vrms |
| Height Seated Max | 38.00mm | 25.40mm | 38.00mm |
| Voltage Primary | 115V, 230V | 115V, 230V | 115V, 230V |
| Voltage Secondary Full Load | Parallel 14V, Series 28V | Parallel 10V, Series 20V | Parallel 12V, Series 24V |
| Primary Winding s | Dual | Dual | Dual |
| Secondary Winding s | Dual | Dual | Dual |
| Center Tap | No | No | No |
| Power Rating | 1.1 VA | 1.1 VA | 1.1 VA |
| Primary Voltage Rating | 115 V / 230 V | 115 V / 230 V | 115 V / 230 V |
| Primary Winding | Dual Primary Winding | Dual Primary Winding | Dual Primary Winding |
| Secondary Winding | Dual Secondary Winding | Dual Secondary Winding | Dual Secondary Winding |
