ChipApex | Global Electronic Components Supplier
LD431843
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：SCR MOD ISO DUAL 1800V 430A
- Series：-
- Mfr：Powerex Inc.
- Package：Bulk
- Structure：Series Connection - All SCRs
- Number of SCRs, Diodes：2 SCRs
- Voltage - Off State：1.8 kV
- Current - On State (It (AV)) (Max)：430 A
- Current - On State (It (RMS)) (Max)：800 A
- Current - Non Rep. Surge 50, 60Hz (Itsm)：14000A, 16000A
- Operating Temperature：-40°C ~ 125°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：-
Download product information
Overview
The Powerex LD431843 is a Dual SCR Isolated POW-R-BLOK module rated at 1800 Volts and 430 Amperes. It features an aluminum nitride isolator for electrical isolation, enabling easy mounting on common heatsinks without additional insulation components. The device supports repetitive peak forward and reverse blocking voltages up to 2200 V, with a maximum RMS forward current of 800 A at a case temperature of 70°C. Average forward current ratings are 430 A at 80°C and 510 A at 70°C under 180° conduction. The module includes metal baseplates and compression bonded elements to ensure low thermal impedance and high surge current capability.
Feature Summary
- Electrically isolated heatsinking via aluminum nitride isolator
- Compression bonded elements for improved reliability
- Metal baseplate construction for low thermal impedance
- UL recognized packaging for simplified installation
Applications
- Bridge Circuits
- AC & DC Motor Drives
- Battery Supplies
- Power Supplies
- Large IGBT Circuit Front Ends
Procurement Notes
Verify the specific voltage code within the LD43__43 series (18, 20, or 22) to match system requirements. Confirm that the selected variant aligns with the required blocking voltage rating. Ensure mounting torque specifications for M6 and M10 screws are strictly followed during assembly to maintain mechanical integrity and thermal performance.
Selection Notes
Select this module for applications requiring phase control with isolated packaging. Evaluate thermal management needs based on the junction-to-case thermal resistance of 0.0325 °C/W per module. Consider the operating temperature range of -40 to +125°C and storage limits up to +150°C when designing the enclosure environment.
Part Context
This component belongs to the LD43__43 family of Dual SCR Isolated Modules manufactured by Powerex Inc. The series offers varying voltage ratings while maintaining a consistent 430 Ampere current capacity. These modules are designed for robust industrial power conversion environments requiring reliable phase control functionality.
Replacement Considerations
Direct substitutes must match the dual SCR configuration, 430A current rating, and compatible voltage class. Verify that alternative components support similar isolation characteristics and mounting dimensions to ensure compatibility with existing heatsink interfaces.
