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S8040R
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Product Detailed Parameters
- Description：SCR 800V 40A TO220
- Series：-
- Mfr：Littelfuse Inc.
- Package：Bulk
- Voltage - Off State：800 V
- Voltage - Gate Trigger (Vgt) (Max)：1.5 V
- Current - Gate Trigger (Igt) (Max)：40 mA
- Current - Hold (Ih) (Max)：60 mA
- Current - Non Rep. Surge 50, 60Hz (Itsm)：430A, 520A
- SCR Type：Standard Recovery
- Operating Temperature：-40°C ~ 125°C
- Grade：-
- Qualification：-
- Mounting Type：Through Hole
- Package / Case：TO-220-3
- Supplier Device Package：TO-220 Non-Isolated Tab
- Voltage - On State (Vtm) (Max)：1.8 V
- Current - On State (It (AV)) (Max)：25 A
- Current - On State (It (RMS)) (Max)：40 A
- Current - Off State (Max)：20 µA
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Overview
The Littelfuse S8040R is a Silicon Controlled Rectifier (SCR) from the Teccor Sxx40x series, designed for surface-mount applications in the SMTO-263-2 package. It features an RMS on-state current of 40 A and a repetitive peak off-state voltage of 800 V. The device supports a non-repetitive peak on-state current of 520 A and maintains a maximum holding current of 60 mA. Electrical characteristics include a forward voltage of 1.8 V, a gate trigger voltage of 1.5 V, and a gate trigger current of 40 mA. It operates within a temperature range of -40°C to +125°C.
Feature Summary
- Surface-mount construction in a compact SMTO-263-2 package for automated PCB assembly
- High thermal stability with an extended operating temperature range up to 125°C
- Robust surge handling capability with a 520 A non-repetitive peak on-state current rating
Applications
- Industrial motor control circuits requiring high current switching
- Solid-state relays and contactors for AC power regulation
- General-purpose AC power control systems
Procurement Notes
Verify the specific suffix against official Littelfuse documentation to confirm exact electrical tolerances and packaging configurations. Ensure the ordering quantity aligns with manufacturer reel specifications. Confirm RoHS compliance status through the latest datasheet revision before finalizing procurement orders.
Selection Notes
Select this component when a 40 A RMS SCR is required in a surface-mount form factor. Verify that the 800 V blocking voltage meets circuit requirements. Check that the gate trigger parameters are compatible with the driving logic level. Ensure the SMTO-263-2 footprint fits the target PCB layout constraints.
Part Context
This part belongs to the Littelfuse Teccor Sxx40x family of thyristors. These devices are engineered for reliable AC power switching in industrial and consumer applications. The S8040R variant specifically provides a balance of high current capacity and voltage blocking in a standardized surface-mount package.
Replacement Considerations
Consult official Littelfuse substitution guides for verified equivalents. Generic replacements may differ in gate sensitivity or thermal resistance. Validate pinout compatibility and package dimensions before integrating alternative components into existing designs.
