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SJ4020NTP
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Product Detailed Parameters
- Description：HIGH TJ 400V 20A SCR TO263
- Series：SJ
- Mfr：Littelfuse Inc.
- Package：Tube
- Voltage - Off State：600 V
- Voltage - Gate Trigger (Vgt) (Max)：1.5 V
- Current - Gate Trigger (Igt) (Max)：35 mA
- Current - Hold (Ih) (Max)：75 mA
- Current - Non Rep. Surge 50, 60Hz (Itsm)：225A, 300A
- SCR Type：Standard Recovery
- Operating Temperature：-40°C ~ 150°C (TJ)
- Grade：-
- Qualification：-
- 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)：1.6 V
- Current - On State (It (AV)) (Max)：12.8 A
- Current - On State (It (RMS)) (Max)：20 A
- Current - Off State (Max)：10 µA
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Overview
The Littelfuse SJ4020NTP is a Silicon Controlled Rectifier (SCR) from the SJxx20xx series, designed for high-temperature operation with a maximum junction temperature of +150°C. It features a rated repetitive off-state voltage (VDRM) of 400 V and an on-state RMS current (It RMS) of 20 A. The device utilizes a D2PAK-2 surface-mount package for PCB integration. Key electrical parameters include a gate trigger voltage (Vgt) of 1.5 V, a gate trigger current (Igt) of 35 mA, and a holding current (Ih) maximum of 75 mA. It exhibits a non-repetitive peak on-state current capability of 300 A and operates within a temperature range of -40°C to +150°C.
Feature Summary
- High-temperature silicon controlled rectifier rated for continuous operation at junction temperatures up to +150°C
- Surface-mount D2PAK-2 packaging optimized for automated PCB assembly and compact form factors
- Robust surge current handling capability supporting transient load conditions in power circuits
Applications
- Industrial motor control systems requiring high thermal stability
- Solid-state relay implementations for AC switching applications
- Power supply circuits demanding robust overcurrent protection
Procurement Notes
Verify the specific suffix against manufacturer documentation to confirm pinout and thermal characteristics. Ensure ordering quantities align with standard reel packaging requirements. Confirm RoHS compliance status through official Littelfuse datasheets prior to procurement. Validate that the D2PAK-2 footprint matches the target PCB design constraints.
Selection Notes
Select this component when a 400V SCR with 20A RMS current capacity is required in a surface-mount configuration. Consider the +150°C operating limit for environments with elevated ambient temperatures. Compare gate trigger specifications against available drive circuitry capabilities. Evaluate thermal management solutions suitable for the D2PAK-2 package under expected load conditions.
Part Context
This part belongs to the Littelfuse SJxx20xx series of high-temperature SCRs. The series provides alternatives in various packages, including TO-220 variants like the SJ4020L2TP. These devices are engineered for reliability in demanding industrial and automotive-grade applications where standard temperature ratings are insufficient.
Replacement Considerations
Direct replacements within the same series include the SJ4020L2TP, which offers identical electrical ratings but utilizes a TO-220-2 through-hole package. Designers must account for mechanical mounting differences and potential thermal resistance variations between surface-mount and leaded packages.
