SJ6025R2ATP Equivalent & Substitute Parts

Part Overview

The SJ6025R2ATP is an SCR (Silicon Controlled Rectifier) rated for 600V off-state voltage and 25A RMS on-state current in a TO-220AB package from Littelfuse Inc. This part is Active product status and widely used in power control applications requiring thyristor functionality. Finding alternative models becomes necessary due to inventory constraints, application-specific parameter requirements, or sourcing considerations across equivalent device families with matching electrical specifications.

Key Parameters

Parameter	Value
Voltage - Off State	600 V
Voltage - Gate Trigger (Vgt) (Max)	1.5 V
Current - Gate Trigger (Igt) (Max)	10 mA
Voltage - On State (Vtm) (Max)	1.6 V
Current - On State (It (RMS)) (Max)	25 A
Current - Hold (Ih) (Max)	35 mA
Current - Off State (Max)	10 µA
Current - Non Rep. Surge (Itsm) 50/60Hz	300A / 350A
SCR Type	Standard Recovery
Operating Temperature (TJ)	-40°C ~ 150°C
Package / Case	TO-220-3
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution relationships for the SJ6025R2ATP are determined by matching the following critical electrical and mechanical parameters:

Voltage Rating: All substitutes maintain 600V off-state voltage
Package Type: All alternatives use TO-220AB (TO-220-3) through-hole packaging
Gate Trigger Characteristics: Vgt (Max) 1.5V and Igt (Max) 10mA across all substitutes
On-State Voltage: Vtm (Max) 1.6V maintained consistently
Hold Current: Ih (Max) 35mA specification preserved
Operating Temperature Range: -40°C to 150°C (TJ) uniform across all parts
Compliance: ROHS3 compliant with MSL 1 rating across substitutes
Current Ratings: RMS current ratings vary (16A, 20A, 25A) and non-repetitive surge ratings scale accordingly

The SJ6025R2ATP can be substituted with lower current-rated variants (SJ6016R2TP, SJ6020R2TP) when application current requirements are reduced. The SJ6025R2TP represents a direct tube-packaged equivalent, while SV6016R2TP provides a sensitive-gate alternative within the same electrical voltage and package constraints.

Parameter Comparison

Parameter	SJ6025R2ATP	SJ6016R2TP	SJ6020R2TP	SJ6025R2TP	SV6016R2TP
Voltage - Off State	600 V	600 V	600 V	600 V	600 V
Voltage - Gate Trigger (Vgt) (Max)	1.5 V	1.5 V	1.5 V	1.5 V	1.5 V
Current - Gate Trigger (Igt) (Max)	10 mA	10 mA	10 mA	10 mA	10 mA
Voltage - On State (Vtm) (Max)	1.6 V	1.6 V	1.6 V	1.6 V	1.6 V
Current - On State (It (AV)) (Max)	16 A	10 A	12.8 A	16 A	10.2 A
Current - On State (It (RMS)) (Max)	25 A	16 A	20 A	25 A	16 A
Current - Hold (Ih) (Max)	35 mA	35 mA	35 mA	35 mA	35 mA
Current - Off State (Max)	10 µA	10 µA	10 µA	10 µA	10 µA
Current - Non Rep. Surge (Itsm) 50Hz/60Hz	300A / 350A	188A / 225A	225A / 300A	300A / 350A	188A / 225A
SCR Type	Standard Recovery	Standard Recovery	Standard Recovery	Standard Recovery	Sensitive Gate
Operating Temperature (TJ)	-40°C ~ 150°C	-40°C ~ 150°C	-40°C ~ 150°C	-40°C ~ 150°C	-40°C ~ 150°C
Package / Case	TO-220-3	TO-220-3	TO-220-3	TO-220-3	TO-220-3
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

All substitute parts (SJ6016R2TP, SJ6020R2TP, SJ6025R2TP, SV6016R2TP) maintain Active product status with ROHS3 compliance and MSL 1 ratings matching the SJ6025R2ATP baseline.

SJ6025R2TP is the direct electrical equivalent with identical current ratings (25A RMS, 16A average) and surge current specifications (300A/350A). This part maintains Standard Recovery SCR type and is the primary equivalent for direct replacement in tube packaging.

SJ6020R2TP provides a 20A RMS current rating with corresponding 12.8A average current and 225A/300A surge specifications. This substitute applies to applications where current demand is reduced from 25A to 20A while maintaining identical voltage, gate trigger, and thermal characteristics.

SJ6016R2TP offers a 16A RMS current rating with 10A average current and 188A/225A surge specifications. This Standard Recovery variant substitutes for 16A applications requiring the full 600V voltage class and identical gate trigger parameters.

SV6016R2TP presents a Sensitive Gate alternative at 16A RMS with 10.2A average current. This SV-series part maintains voltage, temperature, and package specifications while providing sensitive-gate functionality for applications requiring lower gate trigger requirements.

Frequently Asked Questions (FAQ)

Q: Can I use SJ6016R2TP or SJ6020R2TP as a direct replacement for SJ6025R2ATP?

A: Substitution is possible only when application current requirements are lower. The SJ6016R2TP and SJ6020R2TP feature reduced RMS current ratings (16A and 20A respectively) compared to the original 25A specification. If your circuit operates within these reduced current limits, these parts are electrically compatible. Verify that load current does not exceed the substitute part's rated RMS current to prevent thermal stress.

Q: What is the difference between SJ6025R2TP and SJ6025R2ATP?

A: Both parts share identical electrical specifications (600V, 25A RMS, Standard Recovery type). The primary difference is packaging: SJ6025R2TP is supplied in tube packaging while SJ6025R2ATP is supplied in tube packaging. Both are footprint-compatible in TO-220-3 applications.

Q: How does SV6016R2TP differ functionally from the SJ-series parts?

A: The SV6016R2TP is a Sensitive Gate SCR variant compared to Standard Recovery type used in SJ-series parts. Both maintain identical 600V voltage rating and 16A RMS current capability. The Sensitive Gate designation indicates optimized gate drive characteristics. Gate trigger voltage and current (Vgt 1.5V max, Igt 10mA max) remain equivalent, making this part a functional alternative for applications benefiting from gate sensitivity improvements.

Q: Are all substitute parts identically rated for temperature operation?

A: Yes. All substitute parts including SJ6016R2TP, SJ6020R2TP, SJ6025R2TP, and SV6016R2TP maintain the identical operating temperature range of -40°C to 150°C (TJ). Thermal performance and derating characteristics apply uniformly across the substitute family.

Q: Do these parts share the same RoHS and compliance certifications?

A: All listed parts are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited). REACH status is Unaffected across all variants, and ECCN/HTSUS classifications match identically. These parts are interchangeable from a compliance and certification perspective.

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