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B644-2T is listed in the SCRs - Modules range at ChipApex. The manufacturer field lists Sensata-Crydom. Its product description is MOD DIODE SCR 42.5A 480V .250"QC. Review the specifications below when checking this part for your BOM.
SCRs - Modules specifications for B644-2T
- Description：MOD DIODE SCR 42.5A 480V .250"QC
- Series：B-2T
- Mfr：Sensata-Crydom
- Package：Bulk
- Structure：Bridge, Single Phase - All SCRs
- Number of SCRs, Diodes：4 SCRs
- Voltage - Off State：1.2 kV
- Current - On State (It (AV)) (Max)：-
- Current - On State (It (RMS)) (Max)：-
- Current - Non Rep. Surge 50, 60Hz (Itsm)：600A @ 60Hz
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Chassis Mount
- Package / Case：Module
- Voltage - Gate Trigger (Vgt) (Max)：3 V
- Current - Gate Trigger (Igt) (Max)：80 mA
- Current - Hold (Ih) (Max)：-
- Grade：-
- Qualification：-
SCRs - Modules datasheet and documents for B644-2T
SCRs - Modules Overview
The Sensata-Crydom B644-2T is a silicon-controlled rectifier (SCR) module belonging to the B-2T series. It features a common cathode configuration with two SCRs and one diode. The device has a maximum repetitive peak reverse voltage of 1200V and an RMS on-state current rating of 42.5A at DC. It supports a non-repetitive surge current of 600A at 60Hz. The component utilizes screw mount installation within a module package.
SCRs - Modules Feature Summary
- Common cathode SCR structure integrating two thyristors
- High voltage blocking capability for industrial power control
- Robust thermal management via base plate mounting
SCRs - Modules Applications
- Industrial motor drives
- Power supply circuits
- AC/DC conversion systems
SCRs - Modules Procurement Notes
Verify the specific datasheet revision for the B644-2T to confirm mechanical dimensions and thermal characteristics. Ensure compatibility with existing heatsink interfaces. Confirm regulatory compliance status such as RoHS if required by the target application environment before finalizing procurement.
SCRs - Modules Selection Notes
Select this module when high voltage isolation and moderate current handling are required in a compact form factor. The common cathode design simplifies circuit topology for bridge configurations. Evaluate thermal resistance requirements against the expected load profile to ensure reliable operation within the specified temperature range.
SCRs - Modules Part Context
This component is part of the B-2T series from Sensata-Crydom, designed for robust power switching applications. The series offers various voltage and current ratings to suit different industrial needs. The B644-2T specifically addresses applications requiring 1200V blocking capability with significant current carrying capacity.
SCRs - Modules Replacement Considerations
Consult official replacement guides for equivalent modules with matching voltage and current ratings. Verify pinout compatibility and mechanical footprint before substituting with alternative manufacturers' parts.
Explore related parts through Thyristors, Discrete Semiconductor Products, all product categories, ChipApex homepage.
