SMD TVS ESD Transient voltage Protection Diode SMBJ20A Series 600W SMB DO-214AA

Description

SMBJ20A TVS Diode – Key Specifications

Series: SMBJ (600W Peak Pulse Power)
Package: DO-214AA (SMB)

1. Electrical Characteristics

• Standoff Voltage (V_RWM): 20V (max reverse working voltage)

• Breakdown Voltage (V_BR): 22.2V – 24.5V (@1mA test current)

• Clamping Voltage (V_C): 32.4V (@10A pulse, typical)

• Peak Pulse Current (I_PP): 18.5A (8/20µs waveform)

• Peak Pulse Power (P_PP): 600W (10/1000µs surge)

• Leakage Current (I_R): <1µA @ V_RWM

2. Protection Features

• ESD Protection: IEC 61000-4-2 (±30kV air/±20kV contact)

• Transient Response: <1ns reaction time

• Polarity: Unidirectional (Blocks positive surges; for bidirectional, use SMBJ20CA)

3. Physical & Thermal

• Package: DO-214AA (SMB)

  • Dimensions: 4.6mm × 3.8mm × 2.3mm

  • Termination: Lead-free, RoHS-compliant

• Operating Temperature: -55°C to +150°C

• Storage Temperature: -55°C to +175°C

4. Applications

• Voltage Spike Protection: Power supplies (AC/DC), motor drives.

• ESD Protection: USB ports, HDMI, Ethernet.

• Automotive: Load dump protection (ISO 7637-2).

5. Manufacturer Part Numbers

• Littelfuse: SMBJ20A

• Vishay: SMBJ20A-E3/52

• ON Semiconductor: SMBJ20A

6. Compliance & Certifications

• RoHS: Yes

• UL Recognized: File E69938

• AEC-Q101: Qualified (for automotive)

Typical Performance Curves

1. Clamping Voltage vs. Current:

   • V_C ≈ 32.4V @ 10A (8/20µs pulse).

2. Leakage Current vs. Temperature:

   • Stays <1µA up to 125°C.