PA1577NL

Overview

The PA1577NL is a surface-mount forward transformer manufactured by Pulse Electronics, designed for switch-mode power supply applications. It features a primary inductance of 230.4 µH and supports a maximum operating frequency of 300 kHz. The device accommodates an input voltage range from 28 V to 68 V and provides dual isolated outputs of 12 V each. Constructed with two primary and two secondary windings, it operates within a temperature range of -40 °C to +130 °C. The component measures 14 mm in length, 17.65 mm in width, and 12.07 mm in height, utilizing a tape and reel packaging format.

Feature Summary

• Provides dual 12 V isolated outputs via separate secondary windings
• Engineered for high-frequency operation up to 300 kHz
• Surface mount construction facilitates automated PCB assembly

Applications

• Switch-mode power supplies (SMPS)
• Forward converter circuits
• Industrial power management modules

Procurement Notes

Verify the specific datasheet version and electrical tolerances against your design requirements before procurement. Confirm that the tape and reel packaging aligns with your pick-and-place equipment specifications. Ensure thermal management strategies account for the 130 °C maximum operating temperature rating during system integration.

Selection Notes

Select this component when dual isolated 12 V outputs are required from a forward topology. The 230.4 µH primary inductance suits designs operating near the upper limit of 300 kHz. Verify footprint compatibility with the 14 x 17.65 mm dimensions and ensure input voltage constraints remain within the 28 V to 68 V range.

Part Context

This part belongs to Pulse Electronics' portfolio of surface-mount power transformers. It is specifically categorized as a forward transformer, distinguishing it from flyback or push-pull variants. The product line targets compact power conversion solutions requiring galvanic isolation between input and multiple output rails.

Replacement Considerations

Cross-reference pinouts and inductance values if substituting. No direct public substitute part numbers are confirmed for this specific model.