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SMBJ28A Specifications

Detailed technical information and Application Scenarios

Product Details

PartNumberManufactorQuantityAvailability
SMBJ28ALITTELFUSE6000Yes

Zener TVSs

The SMBJ28A is a 28V unidirectional TVS diode manufactured by LITTELFUSE, designed for transient voltage suppression (TVS) applications.

Specifications:

  • Voltage - Reverse Standoff (V_RWM): 28V
  • Voltage - Breakdown (V_BR): 31.1V (min)
  • Voltage - Clamping (V_C): 45.4V @ 1A
  • Peak Pulse Current (I_PP): 1A (8/20µs)
  • Power - Peak Pulse (P_PP): 600W (8/20µs)
  • Operating Temperature Range: -55°C to +150°C
  • Package / Case: SMB (DO-214AA)
  • Polarity: Unidirectional

Descriptions:

  • Designed to protect sensitive electronics from ESD, lightning, and other transient voltage events.
  • Unidirectional (clamps positive transients only).
  • Low leakage current for minimal power loss.
  • RoHS compliant and halogen-free.

Features:

  • Fast response time (typically <1ns).
  • High surge capability (600W peak pulse power).
  • Surface-mount package (SMB) for compact PCB designs.
  • Reliable performance in harsh environments.

This diode is commonly used in telecommunications, automotive, industrial, and consumer electronics for overvoltage protection.

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