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S401ERP
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Product Detailed Parameters
- Description：SCR 400V 1A TO92
- Series：-
- Mfr：Littelfuse Inc.
- Package：Tape & Reel (TR)
- Voltage - Off State：400 V
- Voltage - Gate Trigger (Vgt) (Max)：1.5 V
- Current - Gate Trigger (Igt) (Max)：10 mA
- Current - Hold (Ih) (Max)：30 mA
- Current - Non Rep. Surge 50, 60Hz (Itsm)：25A, 30A
- SCR Type：Standard Recovery
- 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：-
- Voltage - On State (Vtm) (Max)：1.6 V
- Current - On State (It (AV)) (Max)：640 mA
- Current - On State (It (RMS)) (Max)：1:00 AM
- Current - Off State (Max)：10 µA
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Overview
The S401ERP is a standard recovery silicon controlled rectifier (SCR) manufactured by Littelfuse Inc. It features a maximum off-state voltage of 400 V and a repetitive peak forward current rating of 1 A. The device utilizes a TO-92-3 (TO-226AA) through-hole package with formed leads, suitable for surface or panel mounting applications requiring compact thyristor solutions. It operates with a maximum gate trigger voltage of 1.5 V.
Feature Summary
- Standard recovery thyristor construction for general switching applications
- Compact three-pin TO-92 through-hole package design
- RoHS compliant manufacturing process
Applications
- General purpose AC/DC switching circuits
- Low power motor control interfaces
- Lighting dimmer implementations
Procurement Notes
Verify the specific ordering suffix ERP corresponds to the Tape & Reel packaging configuration as indicated in distributor documentation. Confirm RoHS3 compliance status matches project requirements. Ensure the TO-92-3 lead form matches the intended PCB footprint or panel mount assembly process before finalizing procurement orders.
Selection Notes
Select this component when a low-current 1 A SCR is required within a small form factor. The 400 V blocking capability suits moderate voltage applications. Consider the through-hole mounting style for manual assembly or high-reliability environments where surface mount alternatives are unsuitable. Verify thermal dissipation needs against the TO-92 package limitations.
Part Context
This part belongs to the Littelfuse thyristor family, specifically designed for standard recovery applications. It serves as a discrete semiconductor switch within power electronics assemblies. The TO-92 variant offers a cost-effective solution for lower power density designs compared to larger industrial packages like TO-220 or TO-263.
Replacement Considerations
Direct substitutes include other 400V 1A SCRs in TO-92 packages from various manufacturers. Cross-reference pinout compatibility and gate trigger specifications carefully. Generic equivalents may vary in surge current ratings or thermal resistance characteristics.
