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DFA75BA80
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Product Detailed Parameters
- Description：DIODE MODULE 800V 75A
- Series：-
- Mfr：SanRex Corporation
- Package：Tray
- Structure：Bridge, 3-Phase - SCRs/Diodes
- Number of SCRs, Diodes：1 SCR, 6 Diodes
- Voltage - Off State：800 V
- Current - On State (It (AV)) (Max)：75 A
- Current - On State (It (RMS)) (Max)：-
- Current - Non Rep. Surge 50, 60Hz (Itsm)：910A, 1000A
- Operating Temperature：-40°C ~ 135°C (TJ)
- Mounting Type：Chassis Mount
- Package / Case：Module
- Voltage - Gate Trigger (Vgt) (Max)：3 V
- Current - Gate Trigger (Igt) (Max)：70 mA
- Current - Hold (Ih) (Max)：-
- Grade：-
- Qualification：-
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Overview
The SanRex DFA75BA80 is a three-phase diode/thyristor power module designed for high-current circuit applications. It integrates six diodes in a three-phase bridge configuration with a single thyristor connected to the direct current line within a compact, isolated package. The diode section supports a maximum repetitive peak reverse voltage of 800V and an average on-state current of 75A at a case temperature of 101°C. The integrated thyristor provides a maximum repetitive peak off-state voltage of 800V and an average on-state current of 60A at a case temperature of 99°C. The module features a 2500V RMS isolation breakdown voltage between the electrode terminals and the mounting base.
Feature Summary
- Combines a three-phase full-wave diode rectifier bridge with a DC-line thyristor in a single unit
- Provides electrical isolation between electrode terminals and the mounting base for safe parallel installation
- Designed for compact integration into high-current circuit architectures
Applications
- Inverter systems for AC or DC motor control
- Current stabilized power supplies
- Switching power supplies
Procurement Notes
Verify the specific suffix against official documentation to confirm voltage ratings and electrical characteristics. Confirm thermal management requirements align with the specified junction-to-case thermal impedance values. Ensure mounting torque specifications are strictly followed to maintain proper thermal contact and mechanical integrity during operation.
Selection Notes
Select this component when a combined three-phase rectification and DC-line switching function is required in a space-constrained design. Evaluate the 75A diode and 60A thyristor current capabilities against the system's continuous and surge load requirements. Verify that the 800V voltage rating exceeds the maximum circuit transient voltages.
Part Context
This part belongs to the SanRex DFA series of complex isolated modules. The series is engineered for high-density power conversion applications where combining rectification and switching functions reduces assembly complexity. The DFA75BA80 specifically addresses the 800V voltage class within this product family.
Replacement Considerations
Consult the official SanRex datasheet for the DFA75BA160 variant if a higher voltage rating is required. Cross-reference with other manufacturers' three-phase diode/thyristor modules only after verifying pinout compatibility, thermal resistance, and electrical parameter equivalence.
FAQ
What is the isolation breakdown voltage of the module?
The isolation breakdown voltage is 2500 V RMS for one minute.
How many diodes and thyristors are contained in this module?
The module contains six diodes configured as a three-phase bridge and one thyristor connected to the direct current line.
What is the recommended mounting torque for the terminals?
The recommended mounting torque for both the M5 mounting and terminal screws is 1.5-2.5 N·m.
