Equivalent & Substitute Parts for CS3J-E3/I General Purpose Rectifier Diode

Part Overview

The CS3J-E3/I is a general purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 600V DC reverse voltage and 2A average rectified current in a DO-214AB (SMC) surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The diode operates across a junction temperature range of -55°C to 150°C and complies with RoHS3 and REACH regulations.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	600	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	1.15 V @ 3 A	V
Reverse Recovery Time (trr)	2.8	µs
Current - Reverse Leakage @ Vr	5	µA @ 600 V
Package / Case	DO-214AB, SMC	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-55 to 150	°C
Product Status	Obsolete	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the CS3J-E3/I is determined by the following critical parameters:

Mandatory Compatibility Criteria:

Voltage - DC Reverse (Vr) (Max): 600V minimum
Package / Case: DO-214AB or SMC equivalent
Mounting Type: Surface Mount
RoHS3 Compliance: Required for regulatory alignment

Performance Considerations:

Current - Average Rectified (Io): Substitute parts rated at 3A or higher satisfy the 2A requirement
Voltage - Forward (Vf): Acceptable range 1.15V to 1.3V @ 3A
Reverse Recovery Time (trr): Standard recovery (>500ns) or fast recovery (≤500ns) both acceptable
Operating Temperature Range: Minimum -55°C to 150°C; extended ranges acceptable

Five substitute parts meet these criteria across three manufacturers: Vishay General Semiconductor, onsemi, Diodes Incorporated, and Microchip Technology.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [V]	trr [µs/ns]	Package	Status	RoHS
CS3J-E3/I	Vishay	600	2	1.15 @ 3A	2.8 µs	DO-214AB	Obsolete	ROHS3
S3J-E3/9AT	Vishay	600	3	1.15 @ 2.5A	2.5 µs	DO-214AB	Active	ROHS3
MURS360T3G	onsemi	600	3	1.25 @ 3A	75 ns	SMC	Active	ROHS3
RS3J-13-F	Diodes Inc.	600	3	1.3 @ 3A	250 ns	SMC	Active	ROHS3
UFS360J/TR13	Microchip	600	3	1.2 @ 3A	60 ns	DO-214AB	Active	Non-compliant
UFS360JE3/TR13	Microchip	600	3	1.2 @ 3A	60 ns	DO-214AB	Active	ROHS3

Engineering Selection Recommendations

Primary Recommendation: S3J-E3/9AT (Vishay)

The S3J-E3/9AT is the direct Vishay equivalent with active product status. It maintains identical voltage and package specifications while providing 3A current capacity. The part is RoHS3 compliant and offers the shortest procurement lead time due to highest inventory availability (2280 pcs). Reverse recovery time of 2.5 µs is comparable to the original CS3J-E3/I.

Secondary Recommendation: UFS360JE3/TR13 (Microchip)

The UFS360JE3/TR13 provides RoHS3 compliance with fast recovery characteristics (60 ns trr). This part is suitable for applications requiring improved switching performance. Operating temperature range extends to 175°C, providing thermal margin beyond the original specification.

Alternative Recommendation: MURS360T3G (onsemi)

The MURS360T3G offers the fastest recovery time (75 ns) and extended operating temperature to 175°C. This part is recommended for high-frequency switching applications. Inventory availability is highest among all substitutes (105100 pcs).

Not Recommended: UFS360J/TR13 (Microchip)

This part does not comply with RoHS3 requirements and should not be selected for new designs or applications requiring regulatory compliance documentation.

Frequently Asked Questions (FAQ)

Q: Can the CS3J-E3/I be directly replaced with S3J-E3/9AT?

A: Yes. Both parts share identical voltage rating (600V), package type (DO-214AB), and mounting method (surface mount). The S3J-E3/9AT has higher current capacity (3A vs 2A), which is acceptable for applications designed for 2A operation. Both are RoHS3 compliant.

Q: What is the difference between standard recovery and fast recovery diodes in these substitutes?

A: The CS3J-E3/I has standard recovery with trr of 2.8 µs. Substitutes with fast recovery (MURS360T3G at 75 ns, UFS360JE3/TR13 at 60 ns) switch faster and generate less reverse current. Fast recovery types are suitable for higher frequency applications but are not required for standard rectification circuits.

Q: Are all substitute parts available in the same packaging?

A: All substitutes use DO-214AB or SMC package designations, which are mechanically and electrically equivalent. However, packaging format differs: S3J-E3/9AT and UFS360 series are supplied in Tape & Reel (TR), while MURS360T3G and RS3J-13-F are available in Cut Tape (CT) or Digi-Reel formats. Verify packaging format with your procurement requirements.

Q: Which substitute has the best RoHS compliance status?

A: S3J-E3/9AT, MURS360T3G, RS3J-13-F, and UFS360JE3/TR13 all comply with RoHS3. The UFS360J/TR13 does not comply and should be avoided for regulated applications.

Q: Can I use a 3A rated diode in a circuit designed for 2A?

A: Yes. A higher current rating provides design margin and does not create compatibility issues. The diode will operate within its safe operating area at 2A load current. Forward voltage drop and thermal characteristics remain within acceptable limits.

Q: What is the impact of forward voltage differences between substitutes?

A: Forward voltage ranges from 1.15V to 1.3V across all substitutes. In rectification circuits, this 0.15V difference typically results in less than 5% variation in circuit performance. For precision applications, verify the specific forward voltage at your operating current.

Q: Is operating temperature range important for substitution?

A: The CS3J-E3/I operates from -55°C to 150°C. All substitutes meet or exceed this range. Extended ranges (to 175°C) provide additional thermal margin but are not required for direct substitution.

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