SJ6025LATP Equivalent and Substitute Parts

Part Overview

The SJ6025LATP is a Silicon Controlled Rectifier (SCR) rated for 600V off-state voltage and 25A RMS on-state current, manufactured by Littelfuse Inc. in the standard recovery category. This thyristor is housed in a TO-220-3 Full Pack Isolated Tab package for through-hole mounting applications. The component is ROHS3 compliant and maintains active product status in inventory with 845 units in stock. Alternative models within the SJ series provide substitution options based on specific current ratings and on-state characteristics, allowing selection based on circuit requirements.

Key Parameters

Parameter	Value
Voltage - Off State	600 V
Voltage - Gate Trigger (Vgt) (Max)	1.5 V
Current - Gate Trigger (Igt) (Max)	35 mA
Voltage - On State (Vtm) (Max)	1.6 V
Current - On State (It (RMS)) (Max)	25 A
Current - Hold (Ih) (Max)	75 mA
Current - Off State (Max)	10 µA
SCR Type	Standard Recovery
Operating Temperature Range	-40°C ~ 150°C (TJ)
Mounting Type	Through Hole
Package / Case	TO-220-3 Full Pack, Isolated Tab
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution compatibility for the SJ6025LATP is determined by the following critical electrical parameters: off-state voltage (600V minimum), gate trigger specifications (Vgt and Igt), on-state voltage characteristics (Vtm), and on-state current ratings. All substitute parts within the SJ series maintain identical voltage ratings (600V off-state) and gate control characteristics (1.5V Vgt, 35mA Igt). The primary differentiation among substitutes occurs in on-state current capacity, where the SJ6025LATP delivers 25A RMS, while the SJ6020LTP provides 20A RMS. On-state voltage (Vtm) remains constant at 1.6V maximum across all options. Non-repetitive surge current values scale proportionally with on-state current ratings. Package configuration, mounting type, and thermal specifications remain consistent across the product line. All parts maintain standard recovery SCR type classification, identical temperature operating range (-40°C to 150°C), and equivalent compliance certifications (ROHS3, REACH Unaffected). Selection between the main part and substitutes is determined by the required continuous and surge current capacity of the application circuit.

Parameter Comparison

Parameter	SJ6025LATP	SJ6020LTP	SJ6025LTP
Voltage - Off State	600 V	600 V	600 V
Voltage - Gate Trigger (Vgt) (Max)	1.5 V	1.5 V	1.5 V
Current - Gate Trigger (Igt) (Max)	35 mA	35 mA	35 mA
Voltage - On State (Vtm) (Max)	1.6 V	1.6 V	1.6 V
Current - On State (It (RMS)) (Max)	25 A	20 A	25 A
Current - On State (It (AV)) (Max)	16 A	12.8 A	16 A
Current - Hold (Ih) (Max)	75 mA	75 mA	75 mA
Current - Off State (Max)	10 µA	10 µA	10 µA
Current - Non Rep. Surge 50Hz (Itsm)	300 A	225 A	300 A
Current - Non Rep. Surge 60Hz (Itsm)	350 A	300 A	350 A
Operating Temperature	-40°C ~ 150°C (TJ)	-40°C ~ 150°C (TJ)	-40°C ~ 150°C (TJ)
Package / Case	TO-220-3 Full Pack, Isolated Tab	TO-220-3 Full Pack, Isolated Tab	TO-220-3 Full Pack, Isolated Tab
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active

Engineering Selection Recommendations

All three components (SJ6025LATP, SJ6020LTP, and SJ6025LTP) are active products manufactured by Littelfuse Inc. with identical compliance certifications including ROHS3 compliance and REACH Unaffected status. Selection between SJ6025LATP and SJ6025LTP is interchangeable, as both devices share identical electrical specifications and on-state current ratings (25A RMS, 16A average). The SJ6020LTP represents a lower-current variant suitable for applications requiring maximum 20A RMS continuous current and 225A/300A non-repetitive surge capacity at 50Hz/60Hz respectively. All parts feature standard recovery SCR type classification with consistent gate trigger characteristics and thermal operating range. Component selection should be based on application circuit current requirements and available inventory, with full parameter alignment across the specified voltage and thermal specifications.

Frequently Asked Questions (FAQ)

Q: Can SJ6020LTP be used as a substitute for SJ6025LATP? A: SJ6020LTP is a lower-current variant suitable for applications requiring maximum 20A RMS on-state current. It can substitute the SJ6025LATP only if the application circuit operates at or below 20A RMS. All other electrical parameters including voltage ratings, gate control specifications, and temperature range are identical. Non-repetitive surge current is reduced to 225A/300A at 50Hz/60Hz respectively.

Q: What is the difference between SJ6025LATP and SJ6025LTP? A: SJ6025LATP and SJ6025LTP share identical electrical specifications with 25A RMS on-state current, 1.6V maximum on-state voltage, and 600V off-state rating. Both employ TO-220-3 Full Pack Isolated Tab packaging with identical thermal and compliance characteristics. These parts are direct equivalents with full interchangeability.

Q: Are all substitute parts pin-compatible? A: All parts utilize the TO-220-3 Full Pack Isolated Tab package configuration with identical mounting type (Through Hole) and pin arrangement. Direct board-level substitution is supported without PCB modification.

Q: Do substitutes maintain the same temperature operating range? A: All parts operate across the identical temperature range of -40°C to 150°C junction temperature (TJ), ensuring equivalent thermal performance and reliability in specified environmental conditions.

Q: What is the significance of the isolated tab in the TO-220-3 package? A: The isolated tab configuration provides electrical isolation of the package tab from the semiconductor junction, enabling independent thermal management without electrical coupling to the component. This feature is consistent across all substitute options.

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