S2JA R3G Equivalent & Substitute Parts

Part Overview

The S2JA R3G is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 600 V DC reverse voltage and 1.5 A average rectified current in a surface mount DO-214AC (SMA) package. This part is discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components for ongoing design support and procurement.

The S2JA R3G operates across a junction temperature range of -55°C to 150°C and complies with RoHS3 and REACH standards. Standard recovery characteristics with a reverse recovery time of 1.5 µs and forward voltage of 1.1 V @ 1.5 A define its electrical performance profile.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	600	V
Current - Average Rectified (Io)	1.5	A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 1.5 A	V
Reverse Recovery Time (trr)	1.5	µs
Current - Reverse Leakage @ Vr	5	µA @ 600 V
Capacitance @ Vr, F	30	pF @ 4V, 1MHz
Package / Case	DO-214AC, SMA	—
Operating Temperature - Junction	-55 to 150	°C
Technology	Standard	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the S2JA R3G is determined by the following critical parameters:

Mandatory Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 600 V
Package / Case: DO-214AC, SMA
Mounting Type: Surface Mount
RoHS3 Compliance

Current Rating Considerations: The S2JA R3G is rated for 1.5 A average rectified current. Substitute parts are grouped into two categories:

Direct Equivalents (1.5 A Rating): Parts with identical 1.5 A current rating provide drop-in replacement capability without circuit redesign.
Reduced Current Rating Substitutes (1.0 A Rating): Parts rated for 1.0 A can substitute in applications where the circuit design accommodates lower current capacity. These parts maintain 600 V reverse voltage and DO-214AC packaging.

Recovery Speed Variations: The S2JA R3G exhibits standard recovery characteristics (>500 ns). Substitute parts with fast recovery (≤500 ns) or alternative recovery specifications are listed but represent performance variations that may affect circuit behavior in high-frequency switching applications.

Forward Voltage Variations: Forward voltage specifications range from 1.0 V to 1.5 V across substitute options. Variations in forward voltage affect power dissipation and thermal performance in the application circuit.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max)	Io	Vf (Max) @ If	trr	Package	Product Status	Packaging Type
S2JA R3G	Taiwan Semiconductor Corporation	600 V	1.5 A	1.1 V @ 1.5 A	1.5 µs	DO-214AC, SMA	Discontinued	Cut Tape (CT)
S2JA	Taiwan Semiconductor Corporation	600 V	1.5 A	1.1 V @ 1.5 A	1.5 µs	DO-214AC, SMA	Active	Tape & Reel (TR)
GS2J-LTP	Micro Commercial Co	600 V	2 A	1.1 V @ 2 A	Standard Recovery	DO-214AC, SMA	Active	Tape & Reel (TR)
CGRA4005-G	Comchip Technology	600 V	1 A	1.1 V @ 1 A	≤500 ns	DO-214AC, SMA	Active	Tape & Reel (TR)
CSFA105-G	Comchip Technology	600 V	1 A	1.5 V @ 1 A	35 ns	DO-214AC, SMA	Active	Tape & Reel (TR)
GS1J-LTP	Micro Commercial Co	600 V	1 A	1 V @ 1 A	Standard Recovery	DO-214AC, SMA	Active	Tape & Reel (TR)
RS1J-13-F	Diodes Incorporated	600 V	1 A	1.3 V @ 1 A	250 ns	DO-214AC, SMA	Active	Tape & Reel (TR)
RS1JHE3_A/H	Vishay General Semiconductor - Diodes Division	600 V	1 A	1.3 V @ 1 A	250 ns	DO-214AC, SMA	Active	Tape & Reel (TR)
RS1JHE3_A/I	Vishay General Semiconductor - Diodes Division	600 V	1 A	1.3 V @ 1 A	250 ns	DO-214AC, SMA	Active	Cut Tape (CT)
S1J-13-F	Diodes Incorporated	600 V	1 A	1.1 V @ 1 A	3 µs	DO-214AC, SMA	Active	Cut Tape (CT) & Digi-Reel®
S1JB-13-F	Diodes Incorporated	600 V	1 A	1.1 V @ 1 A	3 µs	DO-214AA, SMB	Active	Cut Tape (CT) & Digi-Reel®

Engineering Selection Recommendations

Primary Equivalent (Packaging Variant): The S2JA from Taiwan Semiconductor Corporation is the direct parametric equivalent to the S2JA R3G. Both parts share identical electrical specifications: 600 V reverse voltage, 1.5 A average rectified current, 1.1 V forward voltage at 1.5 A, and 1.5 µs reverse recovery time. The S2JA is currently Active in product status and available in Tape & Reel (TR) packaging, whereas the S2JA R3G was supplied in Cut Tape (CT) format. This substitution requires only packaging format adjustment in procurement and assembly processes.

Higher Current Rating Alternative: The GS2J-LTP from Micro Commercial Co provides 2 A average rectified current while maintaining 600 V reverse voltage and DO-214AC packaging. This part is suitable for applications where increased current capacity is beneficial or where circuit design margins require higher current rating. The GS2J-LTP exhibits standard recovery characteristics matching the S2JA R3G profile.

Reduced Current Rating Alternatives: Multiple 1 A rated parts are available as substitutes for applications where circuit design accommodates lower current capacity:

GS1J-LTP (Micro Commercial Co): Offers the lowest forward voltage (1.0 V @ 1 A) among 1 A alternatives, reducing power dissipation.
S1J-13-F (Diodes Incorporated): Provides standard recovery characteristics (3 µs) and extended temperature range (-65°C to 150°C).
RS1J-13-F (Diodes Incorporated): Features fast recovery (250 ns) with 1.3 V forward voltage.
RS1JHE3_A/H and RS1JHE3_A/I (Vishay): Automotive-grade parts with AEC-Q101 qualification, fast recovery (250 ns), and lowest capacitance (7 pF @ 4V, 1MHz).

All substitute parts maintain RoHS3 compliance and REACH unaffected status. Product status verification confirms all listed alternatives are currently Active, ensuring long-term availability and supply chain stability.

Package Consideration: The S1JB-13-F from Diodes Incorporated uses DO-214AA (SMB) package instead of DO-214AC (SMA). This part is not a direct mechanical substitute due to different package footprint and requires PCB layout modification.

Frequently Asked Questions (FAQ)

Q: Can the S2JA R3G be directly replaced with the S2JA?

A: Yes. The S2JA is a direct parametric equivalent with identical electrical specifications. The only difference is packaging format: S2JA R3G is supplied in Cut Tape (CT), while S2JA is supplied in Tape & Reel (TR). Both parts are DO-214AC (SMA) surface mount packages with identical footprints.

Q: What is the difference between the S2JA R3G and 1 A rated alternatives?

A: The S2JA R3G is rated for 1.5 A average rectified current, while alternatives such as GS1J-LTP, RS1J-13-F, and S1J-13-F are rated for 1.0 A. The 1.5 A rating allows higher current handling in the application circuit. Substitution with 1 A parts is valid only if the circuit design operates at or below 1 A current levels.

Q: Are there differences in recovery speed between substitute options?

A: Yes. The S2JA R3G exhibits standard recovery (>500 ns, 1.5 µs trr). Some alternatives feature fast recovery (≤500 ns), such as CGRA4005-G (≤500 ns), CSFA105-G (35 ns), and RS1J-13-F (250 ns). Fast recovery diodes reduce switching losses in high-frequency applications but may introduce different electromagnetic characteristics. Standard recovery parts maintain the original S2JA R3G behavior.

Q: What is the significance of forward voltage variations?

A: Forward voltage ranges from 1.0 V (GS1J-LTP) to 1.5 V (CSFA105-G) across substitute options. Forward voltage directly affects power dissipation: P = Vf × I. Lower forward voltage reduces heat generation. For example, GS1J-LTP at 1.0 V dissipates less power than CSFA105-G at 1.5 V when operating at identical current levels. Circuit thermal design may be affected by this variation.

Q: Can the GS2J-LTP (2 A) be used as a substitute?

A: Yes. The GS2J-LTP provides higher current capacity (2 A) while maintaining 600 V reverse voltage and DO-214AC packaging. This part is suitable for applications where increased current margin is desired. No circuit modification is required; the higher current rating provides additional design margin.

Q: What is the difference between RS1JHE3_A/H and RS1JHE3_A/I?

A: Both parts are identical in electrical specifications and are automotive-grade with AEC-Q101 qualification. The difference is packaging format: RS1JHE3_A/H is supplied in Tape & Reel (TR), while RS1JHE3_A/I is supplied in Cut Tape (CT). The Cut Tape format of RS1JHE3_A/I matches the original S2JA R3G packaging type.

Q: Why is the S1JB-13-F listed if it uses a different package?

A: The S1JB-13-F uses DO-214AA (SMB) package instead of DO-214AC (SMA). While electrically equivalent at 1 A / 600 V, this part requires PCB layout modification due to different footprint dimensions. It is listed for reference in applications where package change is acceptable.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain RoHS3 compliance and REACH unaffected status, matching the environmental and regulatory requirements of the S2JA R3G.

Q: Which substitute offers the best thermal performance?

A: The GS1J-LTP provides the lowest forward voltage (1.0 V @ 1 A), resulting in the lowest power dissipation among 1 A alternatives. For 1.5 A operation, the S2JA (direct equivalent) maintains the original 1.1 V forward voltage specification.

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