The SMCJ33A is a unidirectional transient voltage suppressor (TVS) diode designed to protect sensitive electronic circuits from voltage transients such as electrostatic discharge (ESD), lightning surges, and inductive load switching.

• High Power Handling

  1500W peak pulse power dissipation (10/1000µs waveform) for robust surge protection

  Fast response time (typically <1.0ps) to clamp transient voltages quickly

• Electrical Characteristics

  Reverse standoff voltage (VRWM): 33V (typical)

  Breakdown voltage (VBR): 36.7V (min) to 40.6V (max) at 1mA test current

  Clamping voltage (VC): 53.3V (max) at 28.2A peak pulse current (IPP)

  Low leakage current: ≤5µA at VRWM

• Robust Design

  Glass-passivated junction for reliability

  Surface-mount (SMC/DO-214AB) package (7.11×6.22×2.42mm) for space-constrained PCB designs

  Halogen-free & RoHS compliant

• Thermal Performance

  Wide operating temperature range: -55°C to +150°C

  High-temperature soldering resistance: 260°C for 40 seconds (reflow compatible)

• Telecommunications: Protection of base stations, routers, and modems from lightning surges
• Industrial Electronics: PLCs, motor drives, and power supplies
• Consumer Electronics: USB/HDMI ports, power lines in smartphones/laptops
• Automotive Systems: CAN bus, infotainment, and battery management circuits
• Energy Storage & Power Distribution: Solar inverters, UPS systems