MBR20100 BARRIER DIODE 20A/100V
Share :
The MBR20100 is a specific type of Schottky Barrier Rectifier, a semiconductor device commonly used in power electronics. The 'CT' suffix (as in MBR20100CT) indicates a dual diode configuration with a common cathode.
Here are the key characteristics and typical applications of the MBR20100:
Key Specifications (MBR20100CT - Dual Common Cathode)
| Parameter | Value (Total Device/Per Leg) | Unit | Description |
| Peak Repetitive Reverse Voltage (V_PRM) | 100 | V | The maximum repetitive voltage the diode can block in the reverse direction. |
| Average Rectified Forward Current (I_F(AV)) | 20 (Total) / 10 (Per Leg) | A | The maximum DC current the device can safely handle in the forward direction. |
| Non-Repetitive Peak Forward Surge Current (I_FSM) | 150 to 280 (Per Leg) | A | The maximum current the diode can withstand for a very short, non-repetitive surge (e.g., inrush current). |
| Maximum Instantaneous Forward Voltage (V_F) | 0.8 to 0.95 (at 10A, 25C) | V | The voltage drop across the diode when it is conducting the specified current. Schottky diodes have a low V_F, which improves efficiency. |
| Operating Junction Temperature Range (T_J) | -55 to +150 (up to +175 depending on manufacturer) | C | The safe temperature range for the semiconductor junction. |
| Diode Configuration | Dual, Common Cathode | Two separate Schottky diodes connected with their cathodes tied together at the center pin (Pin 2). | |
| Package Type | TO-220AB (or similar, like ITO-220AB) | A standard through-hole package designed for power applications, often requiring a heatsink. |
Common Applications
The MBR20100's characteristics—especially its low forward voltage drop and fast switching speed (due to being a Schottky type, which means a negligible reverse recovery time)—make it ideal for high-efficiency, high-frequency power applications.
Typical uses include:
Switch-Mode Power Supplies (SMPS): Used as output rectifiers where high efficiency is critical.
DC-DC Converters: Employed in various topologies (e.g., buck, boost, flyback) for rectification and free-wheeling (re-circulating) purposes.
Freewheeling/Recirculating Diodes: Used in circuits with inductive loads (like motor drives or solenoids) to provide a path for current when the driving voltage is removed, preventing high-voltage spikes.
Polarity Protection: Used to prevent damage if a power supply is connected with reverse polarity.