NTSJ30120CTG

Overview

The NTSJ30120CTG is a dual common cathode Schottky rectifier manufactured by onsemi, utilizing trench-based technology for low forward voltage and leakage. It features a TO-220FP (Halide-Free) package with four leads. The device supports a peak repetitive reverse voltage of 120 V and an average rectified forward current of 30 A per device (15 A per diode). Maximum instantaneous forward voltage reaches 1.08 V at 15 A and 25°C. Nonrepetitive peak surge current is rated at 150 A. Operating junction temperature ranges from -40°C to +150°C.

Feature Summary

• Fine lithography trench-based Schottky technology ensures exceptionally low forward voltage and low leakage current.
• Fast switching characteristics combined with exceptional temperature stability reduce power loss and operating temperatures.
• Low thermal resistance design facilitates efficient heat dissipation in high-frequency applications.
• High surge capability provides robustness against transient current loads.

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 ordering suffix 'J' corresponds to the TO-220FP Halide-Free package variant when sourcing. Confirm that the component status aligns with current production schedules as availability may change. Ensure compatibility with halide-free manufacturing requirements if applicable to your assembly process. Cross-reference the datasheet revision date to confirm electrical parameters match your design specifications.

Selection Notes

Select this component for applications requiring low forward voltage drop to maximize efficiency in power conversion stages. The TO-220FP package offers a balance between thermal performance and mounting flexibility compared to standard through-hole options. Consider the 120 V rating for low-voltage DC-DC converter topologies where margin is sufficient. Evaluate thermal resistance values against your heatsinking strategy to maintain junction temperature within safe limits during continuous operation.

Part Context

This part belongs to the NTSx30120CT family of very low forward voltage Schottky rectifiers. Other members include NTST30120CTG in TO-220AB, NTSB30120CTG in D2PAK, and NTSB30120CT-1G in I2PAK. All variants share identical electrical ratings but differ in physical package dimensions and lead configurations. The NTSJ30120CTG specifically denotes the halide-free full-pack variant.

Replacement Considerations

Direct pin-compatible substitutes within the same electrical class include NTST30120CTG (TO-220AB), NTSB30120CTG (D2PAK), and NTSB30120CT-1G (I2PAK). Verify package footprint compatibility before substitution. Ensure the alternative package meets any specific halide-free or flammability requirements present in the original design.

FAQ

What is the maximum nonrepetitive peak surge current?

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

How does the forward voltage vary with temperature?

The maximum instantaneous forward voltage decreases as temperature increases; for example, it drops from a maximum of 1.08 V at 25°C to 0.76 V at 125°C when conducting 15 A.

What is the typical junction-to-case thermal resistance?

The maximum junction-to-case thermal resistance is 1.3 °C/W for the NTSJ30120CTG package.