NTSB30120CTG

Overview

The NTSB30120CTG is a trench-based Schottky rectifier from onsemi, rated at 120 V peak repetitive reverse voltage and 30 A average rectified forward current. It utilizes fine lithography technology to achieve exceptionally low forward voltage (0.50 V typical at 5 A) and low leakage current. The device operates with high surge capability (150 A nonrepetitive peak surge current) and features a junction temperature range of -40°C to +150°C. Packaged in a D2PAK case, it offers low thermal resistance for efficient heat dissipation.

Feature Summary

• Fine lithography trench-based Schottky technology ensures very low forward voltage and low leakage current.
• Fast switching characteristics combined with exceptional temperature stability.
• High surge capability supports robust performance under transient load conditions.
• Low thermal resistance facilitates lower operating temperatures and higher efficiency.

Applications

• Switching power supplies including notebook and netbook adapters
• ATX and flat panel display power systems
• High frequency and DC-DC converters
• Freewheeling and OR-ing diodes
• Reverse battery protection circuits

Procurement Notes

Verify the specific package style matches the design requirement, as this part number corresponds to the D2PAK configuration. Confirm that the Pb-Free designation aligns with environmental compliance standards required by the target market. Ensure the ordering suffix indicates the correct shipping quantity and reel specifications if tape and reel packaging is necessary for automated assembly processes.

Selection Notes

Select this component when low conduction losses are critical for system efficiency. The trench-based technology provides a favorable trade-off between forward voltage drop and reverse leakage current compared to standard Schottky barriers. Consider the thermal resistance values when designing heatsinking solutions to maintain junction temperatures within the specified operational limits during continuous high-current operation.

Part Context

This device belongs to onsemi's Very Low Forward Voltage Trench-based Schottky Rectifier family. It shares core electrical ratings and technological features with related parts such as NTST30120CT and NTSJ30120CTG, differing primarily in mechanical packaging styles like TO-220AB or TO-220FP. The NTSB30120CTG specifically utilizes the surface-mount D2PAK form factor for compact board integration.

Replacement Considerations

Direct substitutes include NTST30120CTG and NTSJ30120CTG, which share identical electrical specifications but utilize different packages (TO-220AB and TO-220FP respectively). Verify pinout compatibility and thermal management requirements when substituting across different package styles.

FAQ

What is the maximum nonrepetitive peak surge current rating?

The device is rated for a nonrepetitive peak surge current of 150 A under half-wave, single-phase, 60 Hz conditions applied at rated load.

How does the forward voltage vary with temperature?

The typical instantaneous forward voltage decreases as temperature increases; for example, it drops from 0.56 V at 25°C to 0.50 V at 125°C when conducting 5 A.