F20-055-C2

Overview

The Triad Magnetics F20-055-C2 is a laminated core power transformer from the Split Pack series, designed for through-hole mounting. It features a single primary winding rated for 115VAC input and dual secondary windings providing parallel 10V or series 20V outputs. The unit delivers a maximum power of 1.1VA with output currents of 110mA in parallel configuration and 55mA in series. It offers 4200Vrms isolation voltage and complies with Class 2/3 safety standards.

Feature Summary

• Split bobbin construction for enhanced electrical isolation
• Dual secondary winding flexibility for parallel or series operation
• Laminated core design for efficient power transfer
• Compliance with Class 2/3 safety regulations

Applications

• Low-power electronic equipment requiring isolated DC supplies
• Audio amplifiers utilizing split-rail power architectures
• Control circuits needing 10V or 20V AC sources
• Industrial instrumentation with strict isolation requirements

Procurement Notes

Verify the specific suffix against the manufacturer datasheet to confirm pinout and insulation class. Ensure the procurement specification matches the required primary voltage (115V) and secondary configuration (parallel vs. series). Confirm RoHS compliance status if environmental regulations apply to the final assembly. Cross-reference the DigiKey part number 237-1540-5-ND for accurate distributor identification.

Selection Notes

Select this component when a compact, low-voltage transformer with high isolation is required. The 1.1VA rating suits applications with minimal current demands. The split bobbin design is critical for meeting stringent safety clearance distances. Consider the physical dimensions and through-hole footprint during PCB layout to ensure proper mechanical fit and thermal management.

Part Context

This transformer belongs to Triad Magnetics' Split Pack series, which emphasizes safety and isolation in a compact form factor. The F20 series is widely used in consumer and industrial electronics where space constraints and regulatory compliance are paramount. The laminated core construction distinguishes it from higher-frequency switch-mode alternatives, making it suitable for standard line-frequency applications.

Replacement Considerations

Direct substitutes include the FS20-120-C2 for higher current needs or the FP12-200 for PCB mount variants. Verify that any replacement maintains the 4200Vrms isolation rating and compatible physical envelope. Ensure the alternative supports the same 115V primary input and provides equivalent secondary voltage options.