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S402ESAP
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Product Detailed Parameters
- Description：SCR 400V 1.5A TO92
- Series：-
- Mfr：Littelfuse Inc.
- Package：Cut Tape (CT),Tape & Box (TB)
- Voltage - Off State：400 V
- Voltage - Gate Trigger (Vgt) (Max)：800 mV
- Current - Gate Trigger (Igt) (Max)：200 µA
- Current - Hold (Ih) (Max)：5 mA
- Current - Non Rep. Surge 50, 60Hz (Itsm)：12.5A, 15A
- SCR Type：Sensitive Gate
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Through Hole
- Package / Case：TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Supplier Device Package：TO-92
- Voltage - On State (Vtm) (Max)：1.7 V
- Current - On State (It (AV)) (Max)：950 mA
- Current - On State (It (RMS)) (Max)：1.5 A
- Current - Off State (Max)：5 µA
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Overview
The Littelfuse S402ESAP is a silicon-controlled rectifier (SCR) from the Sx02xS series, designed for sensitive gate triggering applications. It features a rated repetitive off-state voltage of 400 V and an RMS on-state current of 1.5 A. The device operates within a temperature range of -40°C to +125°C and utilizes a TO-92 through-hole package. Key electrical parameters include a maximum holding current of 5 mA, a gate trigger voltage of 800 mV, and a gate trigger current of 200 uA. It exhibits a forward voltage drop of 1.7 V and a non-repetitive peak on-state current capability of 15 A.
Feature Summary
- Sensitive gate structure enabling reliable triggering with low gate current requirements
- Robust thermal performance supporting operation in high-temperature environments up to 125°C
- Compact TO-92 through-hole packaging suitable for space-constrained circuit board layouts
Applications
- General purpose AC power control circuits
- Lighting dimmer applications
- Motor speed control systems
Procurement Notes
Verify the specific ordering suffix against the manufacturer's official datasheet to ensure correct packaging configuration. Confirm that the component meets RoHS compliance standards required for your assembly process. Cross-reference the Littelfuse part number with authorized distributor catalogs to validate authenticity and traceability before finalizing procurement orders.
Selection Notes
Select this component when a sensitive gate SCR is required for low-power control applications. Ensure the circuit design accommodates the 400 V blocking voltage and 1.5 A continuous current rating. Verify that the gate drive circuit can supply at least 200 uA to guarantee reliable turn-on under all operating conditions.
Part Context
This device belongs to the Littelfuse Sx02xS family of thyristors. These components are engineered for general-purpose switching tasks where compact size and sensitive gate sensitivity are prioritized. The series offers a balance of electrical performance and mechanical durability for industrial and consumer electronics.
Replacement Considerations
Consult Littelfuse official substitution guides for compatible alternatives. Verify pinout compatibility and electrical parameter equivalence before replacing the original component in existing designs.
