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SJ4020NRP
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Product Detailed Parameters
- Description：HIGH TJ 400V 20A SCR TO263
- Series：SJ
- Mfr：Littelfuse Inc.
- Package：Tape & Reel (TR)
- 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 SJ4020NRP is a Silicon Controlled Rectifier (SCR) from the SJxx20xx series, designed for high-temperature applications. 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 operates within a temperature range of -40°C to +150°C. Key electrical parameters include a gate trigger voltage (Vgt) of 1.5 V, a gate trigger current (Igt) of 35 mA, and a maximum holding current (Ih) of 75 mA. It exhibits a non-repetitive on-state current capability of 300 A and a low off-state leakage current of 10 µA at VDRM. The component is housed in a D2PAK-2 surface-mount package.
Feature Summary
- High-temperature operation capability up to +150°C
- Surface-mount D2PAK-2 packaging for automated assembly
- Robust surge handling with 300 A non-repetitive on-state current
Applications
- Industrial power control systems
- AC motor drive circuits
- General-purpose rectification in power supplies
Procurement Notes
Verify the specific suffix 'R' indicates reel packaging when ordering. Confirm the manufacturer part number matches Littelfuse SJ4020NRP exactly. Ensure the supplier provides official datasheets to validate the 400V/20A ratings and D2PAK-2 package dimensions before finalizing procurement.
Selection Notes
Select this SCR for designs requiring surface-mount integration and high thermal tolerance. Compare the 400V blocking voltage against circuit peak voltages. Evaluate the 20A RMS current rating against load requirements. Consider the D2PAK-2 footprint for PCB layout constraints and thermal dissipation needs.
Part Context
This component belongs to the Littelfuse SJxx20xx series of thyristors. It shares core electrical characteristics with other variants in the family, such as different voltage or current ratings, but is distinct due to its specific 400V/20A specification and surface-mount D2PAK-2 form factor.
Replacement Considerations
The SJ4020RATP is a verified alternative from the same series offering identical 400V/20A specifications. However, it utilizes a TO-220-2 through-hole package instead of the D2PAK-2 surface-mount case. Verify mechanical compatibility and mounting method differences before substitution.
