Equivalent & Substitute Parts for RS3JC-HF

Part Overview

The RS3JC-HF is a general-purpose rectifier diode manufactured by Comchip Technology, rated for 600 V DC reverse voltage and 3 A average rectified current in a DO-214AB surface mount package. This component is classified as Active product status and is ROHS3 compliant. Substitute parts are identified based on matching electrical specifications, package compatibility, and manufacturing standards. Alternative sources become necessary due to supply chain considerations, inventory availability, or specific application requirements such as automotive qualification.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	600	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max)	1.3	V @ 3 A
Reverse Recovery Time (trr)	250	ns
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	-
Package / Case	DO-214AB, SMC	-
Mounting Type	Surface Mount	-
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	-
Moisture Sensitivity Level (MSL)	1 (Unlimited)	-

Substitute Part Grouping Explanation

Substitute parts for the RS3JC-HF are qualified based on the following criteria:

Electrical Parameter Matching:

Voltage - DC Reverse (Vr) (Max): 600 V
Current - Average Rectified (Io): 3 A
Reverse Recovery Time (trr): 250 ns
Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
Operating Temperature Range: -55°C to 150°C

Mechanical & Package Compatibility:

Package / Case: DO-214AB, SMC
Mounting Type: Surface Mount
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Compliance & Standards:

RoHS Status: ROHS3 Compliant
ECCN: EAR99
HTSUS: 8541.10.0080

All identified substitute parts meet or exceed these core parameters. Variations in forward voltage measurement conditions (Vf @ 2.5 A versus Vf @ 3 A) and reverse leakage current specifications do not disqualify substitution, as these represent acceptable manufacturing tolerances within the same device class. Automotive-qualified variants (AEC-Q101) are identified separately for applications requiring this certification.

Parameter Comparison

Parameter	RS3JC-HF (Comchip)	RS3J V7G (TSC)	RS3J-E3/57T (Vishay)	RS3J-E3/9AT (Vishay)	RS3JH (TSC)	RS3JHE3_A/H (Vishay)
Voltage - DC Reverse (Vr) (Max)	600 V	600 V	600 V	600 V	600 V	600 V
Current - Average Rectified (Io)	3 A	3 A	3 A	3 A	3 A	3 A
Voltage - Forward (Vf) (Max)	1.3 V @ 3 A	1.3 V @ 3 A	1.3 V @ 2.5 A	1.3 V @ 2.5 A	1.3 V @ 3 A	1.3 V @ 2.5 A
Reverse Recovery Time (trr)	250 ns	250 ns	250 ns	250 ns	250 ns	250 ns
Speed Classification	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA
Current - Reverse Leakage @ Vr	5 µA @ 600 V	10 µA @ 600 V	10 µA @ 600 V	10 µA @ 600 V	10 µA @ 600 V	10 µA @ 600 V
Package / Case	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Operating Temperature - Junction	-55 to 150°C	-55 to 150°C	-55 to 150°C	-55 to 150°C	-55 to 150°C	-55 to 150°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Automotive Grade / AEC-Q101	-	-	-	-	AEC-Q101	AEC-Q101
Product Status	Active	Discontinued at DiGi Electronics	Active	Active	Active	Active

Engineering Selection Recommendations

Primary Substitutes (Standard Grade):

RS3J-E3/9AT (Vishay General Semiconductor - Diodes Division) is the recommended substitute for standard applications. This part maintains Active product status, matches all critical electrical parameters, and is available in Tape & Reel packaging identical to the original RS3JC-HF. Inventory availability is substantial at 4378 pieces.

RS3J-E3/57T (Vishay General Semiconductor - Diodes Division) is an alternative for standard applications, available in Cut Tape packaging. This variant is suitable when tape format is not required. Product status is Active with 2132 pieces in stock.

Automotive-Qualified Substitutes:

RS3JH (Taiwan Semiconductor Corporation) and RS3JHE3_A/H (Vishay General Semiconductor - Diodes Division) are qualified to AEC-Q101 automotive standards. These parts are required for applications subject to automotive qualification requirements. Both maintain Active product status and full electrical parameter compatibility.

Discontinued Alternative:

RS3J V7G (Taiwan Semiconductor Corporation) is marked as Discontinued at DiGi Electronics and should not be selected for new designs or long-term supply requirements, despite current inventory availability of 2254 pieces.

Frequently Asked Questions (FAQ)

Q: Can RS3J-E3/9AT directly replace RS3JC-HF in existing designs?

A: Yes. Both parts share identical voltage ratings (600 V), current ratings (3 A), reverse recovery time (250 ns), operating temperature range (-55°C to 150°C), and DO-214AB package specifications. The forward voltage measurement condition differs (Vf @ 2.5 A versus Vf @ 3 A), but both specify 1.3 V maximum, ensuring functional compatibility.

Q: What is the difference between standard and automotive-qualified variants?

A: RS3JH and RS3JHE3_A/H carry AEC-Q101 automotive qualification, indicating compliance with automotive reliability and testing standards. Standard variants (RS3J-E3/9AT, RS3J-E3/57T) do not carry this certification. Automotive-qualified parts are mandatory for applications subject to automotive industry requirements.

Q: Does packaging format affect electrical performance?

A: No. Tape & Reel (TR) and Cut Tape (CT) packaging formats do not alter electrical characteristics. Selection between RS3J-E3/9AT (Tape & Reel) and RS3J-E3/57T (Cut Tape) depends on assembly process requirements and handling preferences, not performance.

Q: Why do some substitutes show different reverse leakage current specifications?

A: RS3JC-HF specifies 5 µA @ 600 V, while substitute parts specify 10 µA @ 600 V. Both values fall within acceptable manufacturing tolerances for this device class and do not affect functional substitution. The 10 µA specification represents a broader tolerance band that remains within design margins for standard rectifier applications.

Q: Is RS3J V7G suitable for new production?

A: No. RS3J V7G is marked as Discontinued at DiGi Electronics. While current inventory exists, this part should not be selected for new designs or applications requiring long-term supply assurance. Use RS3J-E3/9AT or RS3J-E3/57T for new production.

Q: What does ROHS3 compliance mean for this component?

A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting lead, cadmium, mercury, and other hazardous materials. All listed substitutes maintain ROHS3 compliance, ensuring regulatory compatibility across all alternatives.

Q: Can I use automotive-qualified parts in non-automotive applications?

A: Yes. Automotive-qualified parts (RS3JH, RS3JHE3_A/H) meet or exceed standard specifications and can be used in non-automotive applications. However, automotive qualification adds cost and may not be necessary for non-automotive designs.

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