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Diodes Field-Plated SBR Rectifiers for Automotive Power Circuits

Diodes Incorporated has introduced a new family of automotive-compliant Field-Plated Super Barrier Rectifiers (SBRFP). The devices combine ultra-low forward voltage, low reverse leakage and high avalanche capability to improve efficiency and reliability in demanding automotive power applications.

Key Characteristics

• Technology: Proprietary field-plated Super Barrier Rectifier (SBR) based on MOS process
• Current ratings: 2 A, 3 A and 8 A versions
• Standout model: SBRFP8A60P5Q — maximum forward voltage of only 0.55 V at 8 A
• Low reverse leakage:
  • SBRFP2M60P1Q: max 12 µA
  • SBRFP3M60SAFQ: max 7 µA
• Avalanche energy capability: up to 145 mJ (5–10× higher than conventional Schottky rectifiers)
• Maximum junction temperature: 175°C
• Operating temperature range: −55°C to +175°C
• Packages: PowerDI123, PowerDI5 and SMAF
• Automotive-compliant design for harsh transient environments
• Drop-in alternatives to Schottky and PN-junction rectifiers

The field-plated SBR structure delivers the rare combination of low conduction losses, low leakage at high temperature and superior surge/transient robustness — critical for modern vehicle power networks.

Target Applications

• DC-DC converters
• Reverse-polarity protection
• Battery charging circuits
• Automotive LED lighting
• Transmission control systems

The initial portfolio includes SBRFP2M60P1Q, SBRFP2M60SAFQ, SBRFP3M60SAFQ and SBRFP8A60P5Q.

Source: Electronics For You