NTSB20120CTG

Overview

The NTSB20120CTG is a dual Schottky power rectifier manufactured by onsemi, designed for high-efficiency power conversion applications. It features a common cathode configuration within a single TO-220AB package. The device supports a maximum repetitive reverse voltage of 120 V and a continuous forward current of 20 A per diode. Key electrical characteristics include a low forward voltage drop and minimal reverse leakage current, ensuring efficient operation. The component is rated for junction temperatures up to 150 °C and can withstand peak non-repetitive forward surge currents of 300 A.

Feature Summary

• Dual common cathode Schottky barrier rectifier architecture
• Low forward voltage drop for enhanced energy efficiency
• High thermal stability with elevated maximum junction temperature rating
• Robust surge current handling capability

Applications

• DC-to-DC converter modules
• Free-wheeling rectification in synchronous buck converters
• Power supply output rectification
• Reverse polarity protection circuits

Procurement Notes

Verify the specific suffix 'G' indicates RoHS compliance and halogen-free status as per onsemi standards. Confirm the package outline matches the TO-220AB specification required for your thermal management design. Check for any recent Product Change Notifications (PCNs) regarding lead finish or assembly site changes that may affect qualification. Ensure the supplier provides valid traceability documentation for critical power applications.

Selection Notes

Select this component when a dual common cathode configuration is required to save board space compared to discrete diodes. The 20 A current rating suits medium-power applications where efficiency is critical. Consider the TO-220AB package for through-hole mounting and ease of heatsinking. Compare forward voltage specifications against alternative brands to ensure optimal system efficiency under expected load conditions.

Part Context

This part belongs to onsemi's NTSB series of Trench Schottky Rectifiers. The series utilizes advanced trench technology to achieve lower forward voltage drops and improved switching performance compared to standard Schottky diodes. These devices are engineered for high reliability in demanding power electronics environments, offering a balance between cost, performance, and thermal robustness.

Replacement Considerations

Direct pin-compatible replacements may include other 20 A, 120 V dual Schottky diodes in TO-220 packages from manufacturers like Vishay or STMicroelectronics. Verify that substitute parts meet or exceed the 150 °C junction temperature rating and 300 A surge current capability. Ensure the replacement maintains the same common cathode configuration and package dimensions for mechanical fit.