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S4040NTP
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Product Detailed Parameters
- Description：SCR 400V 40A TO263
- Series：-
- Mfr：Littelfuse Inc.
- Package：Tube
- Voltage - Off State：400 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
- Mounting Type：Surface Mount
- Package / Case：TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Supplier Device Package：TO-263 (D2PAK)
- 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)：10 µA
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Overview
The Littelfuse S4040NTP is a surface-mount Silicon Controlled Rectifier (SCR) in the Teccor S4040 series, designed for AC switching and phase control. It features a 40A RMS on-state current and a 400V repetitive peak off-state voltage. The device utilizes an electrically isolated package with a TO-263 (D2Pak) form factor. Key electrical parameters include a maximum forward voltage of 1.8V, a gate trigger current of 40mA, and a holding current of 60mA. It operates within a temperature range of -40°C to +125°C and supports non-repetitive surge currents up to 520A.
Feature Summary
- Electrically isolated package design for enhanced safety in AC applications
- Surface mount construction optimized for automated PCB assembly
- High thermal stability supporting operation up to 125°C
Applications
- Motor speed control circuits
- Temperature modulation systems
- AC phase control logic
Procurement Notes
Verify that the specific ordering suffix matches the required package variant and lead time requirements. Confirm RoHS compliance status through official Littelfuse documentation prior to integration. Ensure the selected component aligns with the intended thermal management strategy for the target application environment.
Selection Notes
Select this component for applications requiring robust AC switching with surface mount constraints. Evaluate the 40A RMS rating against peak load demands to ensure adequate margin. Consider the 400V blocking capability relative to the system's line voltage. Verify compatibility with standard TO-263 footprint designs during the schematic capture phase.
Part Context
This part belongs to the Littelfuse Teccor S4040 series of low-power SCRs. The series provides bi-directional solid-state switching capabilities for various industrial and consumer electronics. It serves as a compact alternative to traditional through-hole thyristors while maintaining high current handling performance.
Replacement Considerations
Cross-reference with S4040NRP for reel-based packaging variants. Verify pinout compatibility when substituting with other TO-263 SCR devices from different manufacturers.
