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LDR31454
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Product Detailed Parameters
- Description：SCR MODULE 1.4KV 845A POW-R-BLOK
- Series：-
- Mfr：Powerex Inc.
- Package：Bulk
- Structure：Series Connection - All SCRs
- Number of SCRs, Diodes：2 SCRs
- Voltage - Off State：1.4 kV
- 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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Overview
The LDR31454 is a high-power thyristor module manufactured by Powerex Inc., designed for robust industrial power control applications. It features a series configuration of two Silicon Controlled Rectifiers (SCRs) housed in a POW-R-BLOK™ base-mount package. The device supports a maximum repetitive off-state voltage of 1.8 kV and handles an average on-state current of 454 A, with a root-mean-square current rating of 706 A. Gate triggering specifications include a maximum voltage of 2.5 V and current of 250 mA. Non-repetitive surge currents reach 16,000 A at 50 Hz and 15,000 A at 60 Hz. The unit operates within a junction temperature range of -40°C to 130°C and complies with RoHS standards.
Feature Summary
- Dual SCR series structure for enhanced voltage handling and reliability
- High thermal capacity POW-R-BLOK™ module design for efficient heat dissipation
- Robust surge current capability suitable for demanding industrial loads
Applications
- Industrial motor drives and variable frequency drives
- High-power DC power supplies and rectifiers
- Resistive heating control systems
Procurement Notes
Verify the specific part number suffix against official Powerex documentation to confirm exact electrical ratings and pinout configurations. Ensure that the procurement channel provides original manufacturer certification to guarantee component authenticity and traceability. Confirm compliance requirements such as RoHS status prior to finalizing orders.
Selection Notes
Select this component based on its 1.8 kV blocking voltage and 454 A continuous current capabilities. Evaluate the thermal management requirements for the POW-R-BLOK™ package to ensure adequate heat sinking. Compare gate trigger characteristics against the driving circuit's output capabilities to ensure reliable turn-on performance under all operating conditions.
Part Context
This component belongs to the LDR series of high-power thyristor modules from Powerex Inc. These modules are engineered for heavy-duty power electronics, offering superior ruggedness compared to discrete components. The series is widely utilized in sectors requiring precise control of high-energy electrical systems.
Replacement Considerations
Consult official Powerex cross-reference guides for verified substitutes. Ensure any replacement matches the 1.8 kV voltage rating, 454 A current capacity, and POW-R-BLOK™ mechanical footprint.
