Metal Diode 40A Anode Stud Mount
The Vishay 40HF series represents a robust family of standard recovery diodes engineered for high-power applications. Housed in a sturdy DO-203AB (DO-5) package, these components are characterized by their stud-mounted design, which facilitates a strong mechanical and thermal connection to a heatsink. This construction is integral to their role in managing significant power dissipation and ensuring long-term reliability in demanding electrical environments. The stud itself serves as the main terminal, making the diode’s physical installation a key part of its electrical performance.
Functionally, this diode acts as a fundamental switching and rectification component, designed to handle high average and surge currents with stability. Its standard recovery means it is optimized for reliability and robustness in circuits operating at line frequencies, rather than ultra-high-speed switching. The design prioritizes a low forward voltage drop and high surge current capability, ensuring efficient power conversion and resilience against unexpected current spikes that are common in industrial settings.
Built to endure a wide temperature range, the diode’s operational excellence lies in its ability to maintain performance under thermal stress. The stud mount is not just mechanical but a critical thermal path, drawing heat away from the semiconductor junction to the external heatsink. This effective thermal management is paramount for maintaining the diode’s electrical characteristics and preventing thermal runaway, making it a dependable workhorse in continuous and heavy-duty cycles.
Features:
- High surge current capability.
- Available in stud cathode and stud anode versions.
- Compliant with the RoHS directive.
- Leaded version is available.
- Designed and qualified for multiple reliability levels.
Specifications:
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions |
|---|---|---|---|---|---|---|
| Average Forward Current | I_F(AV) | 40 | A | |||
| Peak Repetitive Reverse Voltage | V_RRM | 100 | 1600 | V | Type dependent | |
| Maximum Junction Temperature | T_J | -65 | 190 | °C | For V_RRM ≤ 1200V | |
| -65 | 160 | °C | For V_RRM ≥ 1400V | |||
| Forward Voltage Drop | V_FM | 1.5 | V | I_pk = 125 A, T_J = 25 °C | ||
| Thermal Resistance, Junction to Case | R_θJC | 0.95 | K/W | |||
| Non-Repetitive Surge Current (50 Hz) | I_FSM | 570 | A | t = 10 ms |
Applications:
- Battery Chargers.
- Converters.
- Power Supplies.
- Machine Tool Controls.
- Welding Equipment.
Package Contents:
Datasheet
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