LDR30854

Description：SCR MODULE 800V 845A POW-R-BLOK
Series：-

SKU:36b24f7b094c Category: SCRs - Modules Brand: Powerex Inc.

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Product introduction

Product Detailed Parameters

Description：SCR MODULE 800V 845A POW-R-BLOK
Series：-
Mfr：Powerex Inc.
Package：Bulk
Structure：Series Connection - All SCRs
Number of SCRs, Diodes：2 SCRs
Voltage - Off State：800 V
Current - On State (It (AV)) (Max)：540 A
Current - On State (It (RMS)) (Max)：845 A
Current - Non Rep. Surge 50, 60Hz (Itsm)：18000A, 17000A
Operating Temperature：-40°C ~ 130°C (TJ)
Mounting Type：Chassis Mount
Package / Case：POW-R-BLOK™ Module
Voltage - Gate Trigger (Vgt) (Max)：2.5 V
Current - Gate Trigger (Igt) (Max)：250 mA
Current - Hold (Ih) (Max)：300 mA
Grade：-
Qualification：-

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LDR30854

Overview

The Powerex LDR30854 is a dual Silicon Controlled Rectifier (SCR) module within the POW-R-BLOK series, rated for 800 Volts and 540 Amperes. It features an electrically isolated metal baseplate with a 3000 Vrms isolation rating at 25°C. The device supports a repetitive peak forward and reverse blocking voltage up to 1800 Volts across the series, with a junction temperature range of -40 to +130 °C. Key electrical parameters include a peak on-state voltage of 1.50 V at 1570 A, a gate trigger current of 250 mA, and a turn-off time of 250 µs. Thermal resistance from junction to case is 0.0650 °C/W per junction.

Feature Summary

Electrically isolated heatsinking design eliminates the need for additional insulation components
Compression bonded elements ensure reliable performance under high current conditions
Integrated gate lead kits and M10 terminal hardware simplify installation

Applications

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

Procurement Notes

Verify the specific voltage suffix in the part number, as the LDR3__54 series spans 800V to 1800V ratings. Confirm that the required blocking voltage matches the application needs before procurement. Check for UL recognition status updates and RoHS compliance documentation. Ensure mounting torque specifications for M6 and M10 screws are adhered to during assembly.

Selection Notes

Select this module for applications requiring phase control and isolated packaging. Consider the 540A current rating and thermal impedance coefficients for heat sink design. Verify that the dV/dt rating of 1000 V/µs meets circuit requirements. Evaluate the gate trigger characteristics against the driving circuit capabilities.

Part Context

This component belongs to the LDR3__54 family of dual SCR isolated modules manufactured by Powerex Inc. The series offers various voltage ratings from 800V to 1800V while maintaining a consistent 540A current capacity. These modules are designed for robust industrial power conversion environments.