SMD TVS ESD Transient voltage Protection Diode SMBJ22A Series 600W SMB DO-214AA

Description

SMD TVS ESD Transient voltage Protection Diode SMBJ22A Series 600W SMB DO-214AA

SMBJ22A TVS Diode – Key Specifications

Series: SMBJ (600W Peak Pulse Power)

Package: DO-214AA (SMB)

1. Electrical Characteristics

• Standoff Voltage (VRWM): 22V (max reverse working voltage)

• Breakdown Voltage (VBR): 24.4V – 27V (@1mA test current)

• Clamping Voltage (VC): 35.5V (@10A pulse, typical)

• Peak Pulse Current (IPP): 16.9A (8/20µs waveform)

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

• Leakage Current (IR): <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 SMBJ22CA)

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).

• Typical Performance Curves

1. Clamping Voltage vs. Current:

   • VC≈ 35.5V @ 10A (8/20µs pulse).

2. Leakage Current vs. Temperature:

   • Stays <1µA up to 125°C.

How to Test

1. Multimeter (Diode Mode):

   • Forward bias: ~0.7V drop.

   • Reverse bias: Open circuit (unless breakdown occurs).

2. Oscilloscope: Apply transient pulse and measure clamping voltage.

Soldering Guidelines

• Reflow Profile:

  • Peak temp: 260°C (max 10 sec).

• Hand Soldering:

  • Iron temp: 300°C (max 3 sec per pad).