Diodes Incorporated SBR30200CT

Overview

SBR30200CT from Diodes Incorporated is a 30A dual common-cathode super barrier rectifier in TO-220AB package, rated for 200V peak repetitive reverse voltage, with typical forward voltage of 0.72V at 15A/25°C and soft-switching reverse recovery time of 24ns. It delivers high-temperature stability and low conduction loss in high-current DC output stages of industrial power supplies.

For engineers reviewing the SBR30200CT datasheet, SBR30200CT pinout, SBR30200CT application, or SBR30200CT equivalent, key selection criteria include its 200V VRRM rating, 30A total average output current, 250A non-repetitive surge capability, thermal resistance of 2°C/W (junction-to-case), and soft-recovery performance critical for EMI-sensitive SMPS designs.

Technical Context

This dual-leg super barrier rectifier integrates two independent anode terminals sharing a common cathode, enabling synchronous half-bridge or dual-output configurations. Its patented SBR technology replaces conventional PN junctions with metal-semiconductor barriers to reduce forward voltage while maintaining fast, soft reverse recovery-critical for minimizing switching losses and ringing in 100–500kHz flyback and LLC converters.

The device operates across –65°C to +175°C junction temperature range and supports isolation up to 2000VAC (ITO-220AB variant). Thermal design relies on direct heatsink mounting via the metal tab; derating begins above 50°C ambient, with full 30A rating only achievable with adequate heatsinking per Figure 1.

Key Specifications

Pinout & Package

Package: TO-220AB - Insulated plastic case with metal tab for heatsink mounting; 3-terminal configuration (Anode1, Anode2, Cathode); UL 94V-0 rated, lead-free, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-current, medium-voltage super barrier rectifier applications.

Compared with SBRT30200CT, SBR30200CT offers slightly higher thermal resistance but identical electrical specs and qualification; versus MBR30200CT, it delivers measurable efficiency gain (≈0.5% system efficiency) and extended thermal operating range (+25°C), justifying premium in mission-critical power stages.

Availability

SBR30200CT is available at Aetrix Electronics and suitable for industrial motor drives, telecom rectifier modules, and EV onboard chargers requiring stable component supply, long-lifecycle support, and RoHS/Green compliance.

Supply support for SBR30200CT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, serving industrial, computing, consumer, and communications markets with high-reliability components.

The SBR® Super Barrier Rectifier product line targets high-efficiency, high-power-density AC/DC and DC/DC conversion where low VF, soft recovery, and thermal robustness are essential-especially in space-constrained, thermally demanding power supplies.

FAQ

What is the difference between SBR30200CT and SBR30200CTFP?

SBR30200CT uses the TO-220AB package with insulated tab, while SBR30200CTFP uses the ITO-220AB variant featuring reinforced insulation and 2000VAC isolation between terminals and heatsink. Both share identical electrical specs, but ITO-220AB is required for safety-critical applications needing reinforced creepage/clearance or isolation testing.

Can SBR30200CT replace a standard fast recovery diode in a 200kHz flyback converter?

Yes-its 24ns soft reverse recovery significantly reduces switching losses and EMI compared to typical 50–100ns fast recovery diodes. However, verify layout parasitics and snubber requirements, as faster recovery may increase voltage overshoot if circuit inductance is unmanaged.

Is heatsinking mandatory for SBR30200CT at 30A continuous operation?

Yes. At 30A, power dissipation exceeds 20W even at low VF. Without a heatsink, junction temperature would exceed +175°C within seconds. A minimum 2°C/W heatsink (e.g., 45mm × 20mm × 12mm black aluminum) is required per Figure 1 and thermal derating curves.

Does SBR30200CT support bidirectional current flow?

No-it is a unidirectional rectifier. Current flows only from anode to cathode. The dual-anode configuration does not enable reverse conduction; each leg functions independently as a forward-biased rectifier with no reverse-blocking capability in the opposite direction.