LD420850

$159.68

Description：SCR MOD ISO DUAL 800V 500A
Series：-

SKU:365c755062b4 Category: SCRs - Modules Brand: Powerex Inc.

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Product introduction

LD420850 is listed in the SCRs - Modules range at ChipApex. The manufacturer field lists Powerex Inc.. Its product description is SCR MOD ISO DUAL 800V 500A. Review the specifications below when checking this part for your BOM.

SCRs - Modules specifications for LD420850

Description：SCR MOD ISO DUAL 800V 500A
Series：-
Mfr：Powerex Inc.
Package：Bulk
Structure：Series Connection - SCR/Diode
Number of SCRs, Diodes：1 SCR, 1 Diode
Voltage - Off State：800 V
Current - On State (It (AV)) (Max)：500 A
Current - On State (It (RMS)) (Max)：785 A
Current - Non Rep. Surge 50, 60Hz (Itsm)：16300A, 17000A
Operating Temperature：-40°C ~ 130°C (TJ)
Mounting Type：Chassis Mount
Package / Case：POW-R-BLOK™ Module
Voltage - Gate Trigger (Vgt) (Max)：3 V
Current - Gate Trigger (Igt) (Max)：200 mA
Current - Hold (Ih) (Max)：-
Grade：-
Qualification：-

SCRs - Modules datasheet and documents for LD420850

LD420850

SCRs - Modules Overview

The Powerex LD420850 is a dual SCR/diode isolated module within the POW-R-BLOK series, rated for 800 Volts and 500 Amperes. It features an aluminum nitride isolator providing 3000 Vrms isolation at 25°C. The device supports a repetitive peak forward/reverse blocking voltage up to 1600V across the series. Electrical characteristics include a peak on-state voltage of 1.30V at 1500A and a maximum rate-of-rise of on-state current (di/dt) of 200 A/µs. Thermal resistance from junction to case is 0.0325°C/W per module. Operating temperature ranges from -40°C to +130°C.

SCRs - Modules Feature Summary

Electrically isolated heatsinking via aluminum nitride substrate
Compression bonded elements with metal baseplate
Low thermal impedance for improved current capability
UL recognized packaging

SCRs - Modules Applications

Bridge circuits
AC & DC motor drives
Battery supplies
Power supplies
Large IGBT circuit front ends

SCRs - Modules Procurement Notes

Verify the specific voltage suffix in the part number against the required blocking voltage rating. Confirm mounting torque specifications for M6 and M10 screws match the assembly requirements. Ensure the datasheet revision date aligns with the manufacturing batch for accurate thermal coefficient data.

SCRs - Modules Selection Notes

Select based on the voltage code representing the blocking voltage in hundreds of volts. Verify the RMS forward current rating against the application's conduction angle and case temperature. Check di/dt ratings to ensure compatibility with the gate drive circuitry and snubber networks.

SCRs - Modules Part Context

This component belongs to the LD42__50 family of dual SCR/diode modules. The series offers various voltage ratings from 800V to 1600V while maintaining a consistent 500A current rating and physical outline dimensions.

SCRs - Modules Replacement Considerations

Cross-reference with other LD42__50 variants for different voltage ratings. Verify mechanical footprint compatibility with existing heatsink mounting holes.

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