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S4012VTP
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Product Detailed Parameters
- Description：SCR 400V 12A TO251AA
- Series：-
- Mfr：Littelfuse Inc.
- Package：Tube
- Voltage - Off State：400 V
- Voltage - Gate Trigger (Vgt) (Max)：1.5 V
- Current - Gate Trigger (Igt) (Max)：20 mA
- Current - Hold (Ih) (Max)：40 mA
- Current - Non Rep. Surge 50, 60Hz (Itsm)：100A, 120A
- SCR Type：Standard Recovery
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Through Hole
- Package / Case：TO-251-3 Short Leads, IPAK, TO-251AA
- Supplier Device Package：TO-251AA
- Voltage - On State (Vtm) (Max)：1.6 V
- Current - On State (It (AV)) (Max)：7.6 A
- Current - On State (It (RMS)) (Max)：12:00 AM
- Current - Off State (Max)：10 µA
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Overview
The S4012VTP is a standard recovery silicon controlled rectifier (SCR) manufactured by Littelfuse Inc. It features a 400 V repetitive peak off-state voltage and a 12 A on-state RMS current rating. The device utilizes a TO-251AA through-hole package for mounting. Key electrical characteristics include an off-state leakage current of 10 uA at rated voltage and a gate trigger current of 50 mA. The component operates within a junction temperature range of -40°C to +125°C, ensuring reliable performance in various power control applications requiring robust thyristor switching capabilities.
Feature Summary
- Standard recovery thyristor design for general power control
- High thermal stability with wide operating temperature range
- Sensitive gate triggering capability for efficient circuit drive
Applications
- Industrial motor speed control systems
- Lighting dimmer circuits
- Battery charging equipment
Procurement Notes
Verify the specific datasheet revision and RoHS compliance status directly with Littelfuse or authorized distributors before finalizing procurement. Ensure that the TO-251AA package dimensions match the target PCB footprint requirements. Confirm that the 400V voltage rating and 12A current capacity are sufficient for the intended application's peak load conditions and transient surge scenarios to prevent device failure during operation.
Selection Notes
Select the S4012VTP when a standard recovery SCR is required for medium-power AC phase control applications. This component is suitable for designs needing a 400V blocking capability and 12A continuous current handling in a compact through-hole format. Consider the 50mA gate trigger current requirement for driver circuit sizing. Evaluate thermal management needs based on the TO-251AA package's heat dissipation characteristics under continuous load conditions.
Part Context
The S4012VTP belongs to the Sxx12x series of SCRs from Littelfuse, designed for general-purpose power switching. This series offers a balance of voltage and current ratings suitable for consumer and industrial electronics. The TO-251AA package provides a cost-effective solution for high-volume manufacturing while maintaining reliable electrical performance across varying environmental temperatures.
Replacement Considerations
Cross-reference with other 400V 12A SCRs in the TO-251AA package if availability is constrained. Verify that substitute components meet identical electrical specifications, particularly gate trigger parameters and thermal resistance values, to ensure circuit compatibility without redesign.
