ChipApex | Global Electronic Components Supplier
SJ4020RATP
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：HT SCR 400V 20A TO220R AECQ
- 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：Through Hole
- Package / Case：TO-220-3
- Supplier Device Package：TO-220AB
- 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
Download product information
Overview
The Littelfuse SJ4020RATP is a Silicon Controlled Rectifier (SCR) from the SJxx20xx series, designed for through-hole mounting in TO-220-2 packages. It features a rated repetitive off-state voltage of 400 V and an RMS on-state current capability of 20 A. The device exhibits a forward voltage drop of 1.6 V at conduction, with a gate trigger voltage of 1.5 V and a gate trigger current of 35 mA. Leakage current under off-state conditions is limited to 10 uA, while the holding current maximum is 75 mA. It supports non-repetitive on-state currents up to 300 A and operates within a temperature range of -40 C to +150 C. The component holds AEC-Q101 qualification.
Feature Summary
- AEC-Q101 qualified for automotive reliability standards
- High thermal stability with extended operating temperature range
- Robust surge handling capability for transient protection
Applications
- Automotive power control circuits
- Industrial motor drive systems
- AC power switching applications
Procurement Notes
Verify the specific ordering suffix against official Littelfuse documentation to ensure correct packaging and variant selection. Confirm that the TO-220-2 package dimensions align with the target PCB layout requirements. Cross-reference the AEC-Q101 certification status if the application mandates strict automotive grade compliance. Ensure the 400V voltage rating provides adequate margin for the specific circuit operating conditions.
Selection Notes
Select this SCR when a 400V blocking voltage and 20A continuous current are required in a standard through-hole configuration. The TO-220-2 package facilitates effective heat dissipation for moderate power levels. Consider the 1.6V forward voltage drop for efficiency calculations in high-current paths. Verify that the 35mA gate trigger current matches the driving circuit's output capabilities.
Part Context
This component belongs to the SJxx20xx series of thyristors manufactured by Littelfuse. The series is engineered for general-purpose power control and protection tasks. The SJ4020RATP specifically denotes the 400V, 20A variant within this family, standardized for industrial and automotive environments requiring reliable silicon-controlled rectification.
Replacement Considerations
Consult Littelfuse official substitution guides for direct equivalents. Verify pinout compatibility and thermal resistance values before replacing with other manufacturers' TO-220-2 SCRs.
