## Summary of the Powerex CD43-9B Datasheet

This document is a datasheet for the Powerex CD43-9B, a 90 Ampere, 1800 Volt Dual SCR (Silicon Controlled Rectifier) isolated module. Here's a breakdown of the key information:

1. Core Characteristics:

️· Voltage: 1800V
️· Current: 90A (RMS), 150A (Surge)
️· Type: Dual SCR (two SCRs in a single package)
️· Isolation: Isolated module design.

2. Key Electrical Parameters:

️· Forward Voltage (VTM): 1.65V @ 300A
️· Leakage Currents (IDRM/IRRM): 20mA (Max)
️· Holding/Latching Currents (IH/IL): 250mA / 600mA
️· Gate Trigger Voltage/Current (VGT/IGT): 3.0V / 150mA

3. Thermal Characteristics:

️· Thermal Resistance (RθJC): 0.14 °C/W (per module, both conducting), 0.28°C/W (per junction)
️· Case to Sink Resistance (RθCS): 0.1 °C/W (lubricated)
️· Operating/Storage Temperature: -40°C to +125°C

4. Surge Current Capability:

️· One Cycle Surge Current (ITSM): Up to 2100A (depending on test conditions)
️· I2t values: provided for various surge conditions.

5. Performance Graphs:

️· The datasheet includes various graphs showing:
- Maximum On-State Power Dissipation (sinusoidal and rectangular waveforms)
- Maximum Transient Thermal Impedance
- Maximum Allowable Case Temperature vs. Average On-State Current
- On-State Voltage vs. Current.

6. Important Notes:

️· Data is based on manufacturer testing and is subject to change.
️· The manufacturer provides no warranty of suitability or future availability.
️· Proper mounting torque specifications are provided.