CS3D-E3/I Equivalent & Substitute Parts

Part Overview

The CS3D-E3/I is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 200 V DC reverse voltage and 2 A average rectified current in a surface mount DO-214AB (SMC) package. This part is classified as obsolete, making identification of equivalent and substitute components necessary for ongoing design support, production continuity, and component sourcing.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	200 V
Current - Average Rectified (Io)	2 A
Voltage - Forward (Vf) (Max)	1.15 V @ 3 A
Reverse Recovery Time (trr)	2.8 µs
Current - Reverse Leakage @ Vr	5 µA @ 200 V
Package / Case	DO-214AB, SMC
Mounting Type	Surface Mount
Operating Temperature - Junction	-55°C ~ 150°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the CS3D-E3/I is determined by the following critical parameters:

Voltage Rating: The substitute part must maintain the 200 V DC reverse voltage specification to ensure safe operation in the target circuit.

Current Rating: The substitute part must support the required average rectified current. Parts with equal or higher current ratings are acceptable.

Package and Mounting: The substitute part must use the DO-214AB (SMC) surface mount package to ensure mechanical and electrical compatibility with existing PCB layouts.

Recovery Characteristics: The substitute part must operate within the standard recovery speed classification (>500 ns, >200 mA) to maintain circuit performance.

Temperature Range: The substitute part must support the -55°C to 150°C junction temperature operating range.

Compliance: The substitute part must maintain ROHS3 compliance and REACH unaffected status to meet regulatory requirements.

The S3D-E3/9AT meets all substitution criteria and is classified as an active product, providing long-term availability and supply chain stability.

Parameter Comparison

Parameter	CS3D-E3/I (Main Part)	S3D-E3/9AT (Substitute)
Manufacturer	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division
Category	Diodes, Rectifiers	Diodes, Rectifiers
Voltage - DC Reverse (Vr) (Max)	200 V	200 V
Current - Average Rectified (Io)	2 A	3 A
Voltage - Forward (Vf) (Max)	1.15 V @ 3 A	1.15 V @ 2.5 A
Speed Classification	Standard Recovery >500ns, > 200mA (Io)	Standard Recovery >500ns, > 200mA (Io)
Reverse Recovery Time (trr)	2.8 µs	2.5 µs
Current - Reverse Leakage @ Vr	5 µA @ 200 V	10 µA @ 200 V
Package / Case	DO-214AB, SMC	DO-214AB, SMC
Mounting Type	Surface Mount	Surface Mount
Operating Temperature - Junction	-55°C ~ 150°C	-55°C ~ 150°C
Product Status	Obsolete	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

The S3D-E3/9AT is the direct substitute for the obsolete CS3D-E3/I. Both parts are manufactured by Vishay General Semiconductor - Diodes Division and share identical voltage ratings, package specifications, and temperature operating ranges.

The S3D-E3/9AT provides the following advantages for component replacement:

Product Status: The S3D-E3/9AT is classified as active, ensuring continued availability and long-term supply chain support compared to the obsolete CS3D-E3/I.

Current Rating: The S3D-E3/9AT is rated for 3 A average rectified current, exceeding the 2 A requirement of the CS3D-E3/I. This higher rating provides design margin and operational headroom.

Reverse Recovery Time: The S3D-E3/9AT exhibits a reverse recovery time of 2.5 µs, which is faster than the CS3D-E3/I at 2.8 µs, resulting in improved switching performance.

Regulatory Compliance: Both parts maintain ROHS3 compliance and REACH unaffected status, meeting current environmental and regulatory requirements.

Packaging: The S3D-E3/9AT is supplied in Tape & Reel (TR) format, supporting automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the S3D-E3/9AT directly replace the CS3D-E3/I in existing designs?

A: Yes. Both parts share identical voltage ratings (200 V), identical package specifications (DO-214AB, SMC), identical mounting type (surface mount), and identical operating temperature ranges (-55°C to 150°C). The S3D-E3/9AT is rated for higher current (3 A versus 2 A), which is compatible with applications designed for the 2 A CS3D-E3/I.

Q: What is the difference in reverse leakage current between these parts?

A: The CS3D-E3/I specifies 5 µA reverse leakage at 200 V, while the S3D-E3/9AT specifies 10 µA at 200 V. This difference is within standard manufacturing tolerances for general-purpose rectifier diodes and does not affect substitution suitability for typical applications.

Q: Are there any package or footprint differences?

A: No. Both parts use the DO-214AB (SMC) surface mount package. PCB footprints and assembly processes remain unchanged.

Q: Why is the CS3D-E3/I classified as obsolete?

A: The CS3D-E3/I is no longer in active production. The S3D-E3/9AT serves as the active replacement product from the same manufacturer.

Q: What is the difference in reverse recovery time?

A: The S3D-E3/9AT has a reverse recovery time of 2.5 µs compared to 2.8 µs for the CS3D-E3/I. Both parts are classified as standard recovery devices. The faster recovery time of the S3D-E3/9AT provides improved switching characteristics.

Q: Are both parts RoHS compliant?

A: Yes. Both the CS3D-E3/I and S3D-E3/9AT are ROHS3 compliant and REACH unaffected, meeting current environmental regulations.

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