Archive : 27 July 2026 год

Littelfuse has introduced the FlatSuppressX TP5.0SMD-FL and TP1KSMB-FL series of automotive TVS diodes specifically designed to protect sensitive 48V vehicle electronics from transient overvoltage events. The devices use proprietary FlatSuppressX technology that delivers ultra-low and highly stable clamping voltage, helping safeguard DC/DC converters, gate drivers and power management ICs while reducing system cost.

Key Specifications

• Technology: FlatSuppressX with advanced foldback/snapback I-V characteristic
• Response time: Typical < 1 ps
• TP5.0SMD-FL: Up to 5 kW peak pulse power (DO-214AB / SMC package)
• TP1KSMB-FL: 1 kW peak pulse power (DO-214AA / SMB package)
• Qualification: AEC-Q101 automotive grade
• Compliance: Designed for 48V systems according to ISO 21780
• Ultra-low and stable clamping voltage (prevents exceeding absolute maximum ratings of downstream components)
• Supports lower voltage-rated MOSFETs, gate drivers and power ICs → reduced BOM cost
• Tape-and-reel packaging for automated assembly

Unlike conventional TVS diodes whose clamping voltage rises significantly under high-energy transients, FlatSuppressX maintains a nearly constant protection level. This controlled response also helps avoid latch-up issues.

Target Applications

• Battery Disconnect Units (BDU)
• Zone Control Units (ZCU)
• Electric Power Steering (EPS)
• DC/DC converters and power distribution networks
• 48V power buses and I/O interfaces

As automotive architectures continue migrating to higher-power 48V systems, these devices offer scalable surge protection with high power handling in compact surface-mount packages.

Source: Electronics For You