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SJ6040LTP
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Product Detailed Parameters
- Description：THY SCR TO-220L
- Series：SJxx40xx
- Mfr：Littelfuse Inc.
- Package：Tube
- Voltage - Off State：600 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 ~ 150°C (TJ)
- Grade：-
- Qualification：-
- Mounting Type：Through Hole
- Package / Case：TO-220-3 Full Pack, Isolated Tab
- Supplier Device Package：ITO-220AB
- Voltage - On State (Vtm) (Max)：1.7 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 SJ6040LTP is a 40 Amp standard high temperature Silicon Controlled Rectifier (SCR) in the TO-220L isolated package. It features a 600 V repetitive peak reverse voltage rating and a 15 mA maximum gate trigger current. The device supports an RMS on-state current of 40 A at a case temperature of 55°C, with a junction-to-case thermal resistance of 1.9 °C/W. It withstands a peak non-repetitive surge current of 520 A at 60 Hz and operates within a junction temperature range of -40°C to 150°C.
Feature Summary
- High junction temperature capability for robust operation
- Isolated mounting tab design for enhanced isolation voltage
- Low gate current trigger levels for efficient control
Applications
- Phase control in heating systems
- Motor speed controls
- AC rectifier and voltage regulator circuits
Procurement Notes
Verify the specific ordering suffix 'TP' indicates tube packaging containing 50 units per tube, totaling 1000 units per base quantity as documented in the packing options table. Confirm the 'L' designation corresponds to the TO-220L isolated package type. Ensure the voltage code '60' matches the required 600 V blocking capability for the application design.
Selection Notes
Select this component when an isolated SCR package is required for high-voltage isolation needs. The TO-220L package provides a junction-to-case thermal resistance of 1.9 °C/W, which is higher than non-isolated variants. Designers must account for reduced thermal efficiency compared to TO-220R or TO-263 packages when calculating heat sinking requirements for continuous 40 A operation.
Part Context
This part belongs to the SJxx40xx series of 40 Amp Standard High Temperature SCRs manufactured by Littelfuse Inc. The series includes variants with different voltage ratings (400 V or 600 V), gate sensitivities (15 mA or 40 mA), and package types (TO-220L, TO-220R, TO-263). The SJ6040LTP specifically combines the 600 V rating with the low-sensitivity 15 mA gate trigger and the isolated TO-220L form factor.
Replacement Considerations
Direct replacements within the same family include SJ6040RTP (non-isolated TO-220R) and SJ6040NTP (surface mount TO-263), provided electrical isolation requirements are met. Cross-package substitution requires verifying thermal resistance differences and mechanical mounting constraints.
