F120-020

Overview

The Triad Magnetics F120-020 is a laminated core power transformer designed for printed circuit board mounting. It features a single primary winding rated at 115V and 60Hz, coupled with dual secondary windings capable of series (120V) or parallel (60V) configurations. The unit delivers a maximum output current of 40mA per secondary leg, supporting a total apparent power rating of 2.5VA. Constructed with a split bobbin design, it offers nonconcentrical winding to minimize capacitive coupling. The component measures 1.38 inches in length and 1.13 inches in width, ensuring compatibility with standard PCB layouts.

Feature Summary

• Split bobbin architecture eliminates the need for electrostatic shielding by positioning primaries and secondaries side-by-side
• Dual secondary configuration allows flexible series or parallel voltage connections
• PCB mountable construction supports wave soldering assembly processes

Applications

• General purpose AC power supply circuits
• Industrial control panel equipment
• Consumer electronics requiring isolated low-voltage DC conversion

Procurement Notes

Verify UL recognition file E53148 status before integration. Confirm that the specific ordering suffix matches the required lead time and packaging format. Ensure the received component aligns with the 2.5VA rating and 115V primary specification. Check for physical damage to the split bobbin structure during transit. Validate pin alignment against the target PCB footprint.

Selection Notes

Select this model when a compact, shield-free transformer is required for space-constrained PCB designs. The split bobbin design reduces cost by removing shielding requirements. Choose the F120-020 specifically for applications needing 115V input and dual secondary outputs up to 60V parallel or 120V series. Ensure the 40mA output current meets the load requirements.

Part Context

The F120-020 belongs to the Triad Split Pack family of transformers. This series utilizes a unique nonconcentrical winding technique on split bobbins. The family ranges from 1.1VA to 36.0VA ratings. These components are designed to replace traditional concentric wound transformers where size and shielding costs are critical factors.

Replacement Considerations

Direct substitutes within the Split Pack series include models with matching VA ratings and winding configurations. Verify that any replacement maintains the 115V primary rating and compatible secondary voltage options. Physical dimensions must match the existing PCB footprint.