SI-8120JF

Voltage Regulators - DC DC Switching Regulators Overview

The SI-8120JF is a full-mold, separate excitation switching type DC/DC converter manufactured by Sanken Electric USA Inc. It provides a regulated 12.0 V output with a maximum current of 1.5 A. The device operates at a high frequency of 125 kHz, enabling the use of smaller choke coils and reducing overall component count to just four external parts. Key internal features include phase correction, output voltage adjustment, built-in foldback overcurrent protection, and thermal protection circuits. The package is compact and equivalent to TO-220.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Compact full-mold packaging equivalent to TO-220
• High efficiency ranging from 79% to 91%
• Internal phase correction and output voltage adjustment
• Built-in foldback overcurrent and thermal protection

Voltage Regulators - DC DC Switching Regulators Applications

• Power supplies for telecommunication equipment
• Onboard local power supplies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer designation carefully, as the part number SI-8120JF appears in databases associated with both Sanken Electric and Allegro MicroSystems. Confirm the specific datasheet version and pinout compatibility before integration. Ensure the selected variant matches the required 12.0 V output specification and 1.5 A current rating for your design.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component for designs requiring a simple, high-efficiency step-down solution with minimal external components. The 125 kHz switching frequency allows for reduced passive component size. Consider the internal protections for robust operation in critical applications. Verify that the thermal management requirements align with the expected load conditions and ambient temperature.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to a family of separate excitation switching type converters designed for efficient power conversion. Similar models in the series provide different fixed output voltages such as 3.3 V, 5.0 V, and 9.0 V, all maintaining the same 1.5 A output current capability and compact form factor.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Cross-reference tools may list similar 1.5 A step-down converters from other manufacturers. Verify electrical parameters, pin compatibility, and thermal characteristics before substitution.