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MBR3060PT / MBR20200PT / MBR30100PT / MBR40100PT / MBR40200PT / MBR60100PT / MBR60200PT TO-247 Schottky Diode | 2PCS
MBR3060PT / MBR20200PT / MBR30100PT / MBR40100PT / MBR40200PT / MBR60100PT / MBR60200PT TO-247 Schottky Diode | 2PCS
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MBR Series TO-247 Schottky Diode — High Current Power Rectifier | 2PCS
High-current TO-247 package Schottky barrier rectifier diodes covering the MBR3060PT through MBR60200PT series — the industry standard for high-efficiency power rectification in switch-mode power supplies (SMPS), solar charge controllers, motor drives, and DC-DC converters. Schottky diodes are preferred over standard PN junction diodes in power applications because of their significantly lower forward voltage drop (typically 0.3–0.5V vs. 0.7–1.0V for silicon diodes) — directly reducing conduction losses and improving system efficiency. The TO-247 package provides excellent thermal dissipation when mounted to a heatsink, enabling sustained high-current operation. Supplied as 2PCS per order.
Model Specifications
| Model | IF (Avg) | VRRM | VF (typ) | Package |
|---|---|---|---|---|
| MBR3060PT | 30A | 60V | ~0.50V | TO-247 |
| MBR20200PT | 20A | 200V | ~0.85V | TO-247 |
| MBR30100PT | 30A | 100V | ~0.65V | TO-247 |
| MBR40100PT | 40A | 100V | ~0.65V | TO-247 |
| MBR40200PT | 40A | 200V | ~0.85V | TO-247 |
| MBR60100PT | 60A | 100V | ~0.65V | TO-247 |
| MBR60200PT | 60A | 200V | ~0.85V | TO-247 |
Schottky vs. Standard Silicon Diode — Why It Matters
| Property | Schottky (MBR series) | Standard Silicon (1N540x) |
|---|---|---|
| Forward voltage (VF) | 0.3–0.85V | 0.7–1.0V |
| Conduction loss at 30A | 9–25W | 21–30W |
| Recovery time | Near-zero (majority carrier) | Slow (minority carrier storage) |
| Switching frequency | Suitable for high-frequency SMPS | Limited by reverse recovery |
| Leakage current | Higher (temperature dependent) | Lower |
| Best for | High-frequency rectification, low-loss power | Low-frequency, low-leakage applications |
TO-247 Package — Pin Configuration
| Pin | Function (PT = dual common cathode) |
|---|---|
| Pin 1 (left) | Anode 1 |
| Pin 2 (centre) | Cathode (common, connected to tab) |
| Pin 3 (right) | Anode 2 |
| Tab | Cathode (heatsink mounting, electrically connected to Pin 2) |
PT suffix = dual diode with common cathode. Use as a centre-tap rectifier or two independent diodes sharing a common cathode.
Key Features
- ✅ Low forward voltage — 0.3–0.85V VF reduces conduction losses vs. standard silicon diodes
- ✅ High current ratings — 20A to 60A average forward current for high-power applications
- ✅ High voltage ratings — 60V to 200V VRRM covers 12V, 24V, 48V, and 110V DC bus applications
- ✅ Near-zero reverse recovery — majority carrier device, no minority carrier storage, suitable for high-frequency SMPS
- ✅ TO-247 package — heatsink-mountable for sustained high-power operation
- ✅ Dual common cathode (PT) — centre-tap rectifier configuration in a single package
- ✅ 2PCS per order — matched pair for full-bridge or dual-output rectifier builds
Common Applications
- SMPS output rectifier (secondary side)
- Solar charge controller reverse current protection
- Battery charger output rectifier
- DC motor drive freewheeling diode
- DC-DC converter synchronous rectifier replacement
- UPS and inverter output rectifier
- High-current OR-ing diode (power supply redundancy)
- Welding machine rectifier
Heatsink Mounting
At rated current, the TO-247 package dissipates significant power. Always mount with:
- Thermal interface material (thermal pad or paste) between the tab and heatsink
- An insulating pad if the heatsink is at a different potential than the cathode
- An M3 screw and nut to secure the device to the heatsink
- Heatsink sized for the expected power dissipation: P = VF × IF
Frequently Asked Questions
Q: What is the difference between MBR40100PT and MBR40200PT?
A: Both are 40A diodes. The MBR40100PT is rated for 100V reverse voltage; the MBR40200PT is rated for 200V. Choose based on your DC bus voltage with adequate margin (typically 2× the operating voltage).
Q: Can I use these in a full-bridge rectifier?
A: The PT (common cathode dual) package is optimised for centre-tap rectifier configurations. For a full-bridge, use four individual diodes or two PT packages.
Q: Why does leakage current increase with temperature?
A: Schottky diodes have higher reverse leakage than PN junction diodes, and this leakage increases significantly with temperature. In high-temperature applications, ensure the operating temperature stays within the datasheet limits to prevent thermal runaway.
Package Contents
- 2× TO-247 Schottky Diode (model as selected)
