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Product Detailed Parameters
- Description：DIODE SCHOTTKY 45V 15A TO263AB
- Series：-
- Mfr：Vishay General Semiconductor - Diodes Division
- Package：Tube
- Technology：Schottky
- Voltage - DC Reverse (Vr) (Max)：45 V
- Current - Average Rectified (Io)：15A
- Voltage - Forward (Vf) (Max) @ If：560 mV @ 15 A
- Speed：Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr)：-
- Current - Reverse Leakage @ Vr：1.75 mA @ 45 V
- Capacitance @ Vr, F：-
- Mounting Type：Surface Mount
- Package / Case：TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Supplier Device Package：TO-263AB (D2PAK)
- Operating Temperature - Junction：-55°C ~ 150°C
- Grade：-
- Qualification：-
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Overview
The Vishay 12TQ045S is a single Schottky rectifier in the D2PAK (TO-263AB) surface-mount package. It features a maximum average forward current of 15 A and a maximum repetitive peak reverse voltage of 45 V. The device supports junction temperatures up to 150 °C, with a typical forward voltage drop of 0.50 V at 15 A and 125 °C. Maximum non-repetitive surge current reaches 990 A for a 5 µs sine pulse. Thermal resistance from junction to case is 2.0 °C/W under DC operation.
Feature Summary
- Optimized proprietary barrier technology enables reliable high-frequency operation with very low forward voltage drop.
- High purity, high temperature epoxy encapsulation provides enhanced mechanical strength and moisture resistance.
- Guard ring design ensures enhanced ruggedness and long-term reliability for demanding applications.
Applications
- Switching power supplies
- Converters
- Freewheeling diodes
- Reverse battery protection
Procurement Notes
Verify the specific ordering suffix to confirm the correct packaging format, as options include standard tube, left-oriented tape and reel, or right-oriented tape and reel. Ensure lead-free compliance requirements are met by selecting the appropriate PbF designation if necessary. Confirm that the D2PAK footprint matches the target PCB layout before finalizing procurement.
Selection Notes
Select this component when a surface-mount Schottky rectifier with a 45 V rating and 15 A continuous current capacity is required. The low forward voltage drop makes it suitable for improving efficiency in low-voltage, high-current circuits. Verify that the thermal management solution can handle the 2.0 °C/W junction-to-case thermal resistance to maintain safe operating temperatures.
Part Context
This part belongs to the Vishay 12TQ...S series of Schottky rectifiers, which includes variants with different voltage ratings such as 35 V and 40 V. All members of this series share the same physical D2PAK package and general electrical characteristics, differing primarily in their maximum reverse voltage specifications.
Replacement Considerations
Direct substitutes within the same series include the 12TQ035S and 12TQ040S, provided the lower voltage ratings meet the circuit requirements. Other manufacturers offering equivalent 45 V, 15 A Schottky rectifiers in the D2PAK package may be considered after verifying pinout compatibility and thermal performance.
FAQ
What is the maximum non-repetitive surge current capability?
The device can withstand a maximum non-repetitive surge current of 990 A for a 5 µs sine pulse or 250 A for a 10 ms sine pulse.
How does the forward voltage drop vary with temperature?
At 15 A, the forward voltage drop is typically 0.56 V at 25 °C, 0.50 V at 125 °C, and 0.50 V at 150 °C.
