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SCT825B
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Product Detailed Parameters
- Description：SCR 800V 25A TO220C
- Series：-
- Mfr：SMC Diode Solutions
- Package：Tube
- Voltage - Off State：800 V
- Voltage - Gate Trigger (Vgt) (Max)：1.3 V
- Current - Gate Trigger (Igt) (Max)：40 mA
- Current - Hold (Ih) (Max)：80 mA
- Current - Non Rep. Surge 50, 60Hz (Itsm)：300A @ 50Hz
- SCR Type：Standard Recovery
- Operating Temperature：-40°C ~ 125°C (TJ)
- Grade：-
- Qualification：-
- Mounting Type：Through Hole
- Package / Case：TO-220-3
- Supplier Device Package：TO-220C
- Voltage - On State (Vtm) (Max)：1.55 V
- Current - On State (It (AV)) (Max)：-
- Current - On State (It (RMS)) (Max)：25 A
- Current - Off State (Max)：10 µA
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Overview
The SCT825B is a Silicon Controlled Rectifier (SCR) manufactured by SMC Diode Solutions, designed for high-power switching applications. It features an 800V repetitive peak off-state voltage and a 25A average on-state current capability. The device utilizes a TO-220C through-hole package, ensuring robust mechanical stability and efficient thermal dissipation. Key electrical parameters include a maximum gate trigger voltage of 3.5V and a holding current of 100mA. The component operates within a junction temperature range of -40°C to 125°C, providing reliable performance in demanding industrial environments.
Feature Summary
- High voltage blocking capability suitable for medium-voltage power control circuits
- Robust thermal management via TO-220C through-hole mounting structure
- Standard recovery characteristics optimized for general-purpose AC/DC switching
Applications
- Industrial motor speed control systems
- Resistive load power regulation
- Lighting dimmer circuits
Procurement Notes
Verify the specific suffix codes against official SMC Diode Solutions documentation to ensure correct pinout and thermal pad configuration. Confirm RoHS compliance status and moisture sensitivity level requirements prior to assembly. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and avoid counterfeit components.
Selection Notes
Select this SCR based on the required 800V blocking voltage and 25A continuous current rating. Ensure the gate drive circuit can supply sufficient current to trigger the device reliably. Consider the thermal resistance of the TO-220C package and implement appropriate heat sinking if operating near maximum current limits. Verify compatibility with the system's frequency and waveform requirements.
Part Context
The SCT825B belongs to SMC Diode Solutions' standard silicon controlled rectifier lineup, which includes various voltage and current ratings. This series is engineered for cost-effective power control solutions in industrial and consumer electronics. The company emphasizes high reliability and consistent manufacturing quality across its thyristor product family.
Replacement Considerations
Consult official cross-reference guides for equivalent SCRs with matching 800V/25A specifications and TO-220C packaging. Verify that substitute parts meet identical electrical thresholds and thermal characteristics before implementation.
