Equivalent & Substitute Parts for CS2M-E3/H

Part Overview

The CS2M-E3/H is a general-purpose rectifier diode rated for 1000 V DC reverse voltage with 2 A average rectified current in a DO-214AA (SMB) surface mount package. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and procurement continuity. The CS2M-E3/H remains available in inventory with 883 pieces in stock; however, active alternative components with equivalent electrical characteristics are available to support long-term production requirements.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	1000	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 2 A	V
Reverse Recovery Time (trr)	2.1	µs
Current - Reverse Leakage @ Vr	5	µA @ 1000 V
Package / Case	DO-214AA, SMB	—
Operating Temperature - Junction	-55 to 150	°C
Product Status	Obsolete	—

Substitute Part Grouping Explanation

Substitution of the CS2M-E3/H is determined by equivalence in the following critical electrical and mechanical parameters:

Voltage Rating: The substitute part must maintain the 1000 V DC reverse voltage specification to ensure circuit protection and reliability in the intended application.

Package Type: Both the main part and substitute must use the DO-214AA (SMB) surface mount package to ensure mechanical and thermal compatibility with existing printed circuit board layouts.

Operating Temperature Range: The substitute must support the full -55°C to 150°C junction temperature range to maintain performance across all operating conditions.

Current Handling: While the main part is rated for 2 A average rectified current, substitute parts with equal or greater current ratings are electrically compatible. The S2M-E3/52T is rated for 1.5 A, which represents a reduced current capability and therefore requires circuit-level evaluation for suitability.

Recovery Characteristics: Standard recovery speed (>500 ns, >200 mA) is maintained across all substitute candidates, ensuring consistent switching behavior.

Parameter Comparison

Parameter	CS2M-E3/H (Main Part)	S2M-E3/52T (Substitute)	Unit
Voltage - DC Reverse (Vr) (Max)	1000	1000	V
Current - Average Rectified (Io)	2	1.5	A
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 2 A	1.15 V @ 1.5 A	V
Reverse Recovery Time (trr)	2.1	2	µs
Current - Reverse Leakage @ Vr	5	1	µA @ 1000 V
Capacitance @ Vr, F	12	16	pF @ 4V, 1MHz
Package / Case	DO-214AA, SMB	DO-214AA, SMB	—
Operating Temperature - Junction	-55 to 150	-55 to 150	°C
Product Status	Obsolete	Active	—
RoHS Status	—	ROHS3 Compliant	—

Engineering Selection Recommendations

The S2M-E3/52T is the manufacturer-recommended substitute for the CS2M-E3/H. Both components are manufactured by Vishay General Semiconductor - Diodes Division and share identical voltage ratings, package types, and operating temperature ranges.

The primary distinction between these parts is the average rectified current rating: the CS2M-E3/H is rated for 2 A while the S2M-E3/52T is rated for 1.5 A. Circuit designs operating at or near the 2 A specification of the original part require evaluation to confirm that operation at 1.5 A is acceptable for the intended application.

The S2M-E3/52T offers the advantage of active product status with ROHS3 compliance and Moisture Sensitivity Level 1 (Unlimited), supporting long-term procurement and regulatory requirements. The substitute part is available in significantly higher inventory (31,800 pieces) compared to the obsolete main part (883 pieces), ensuring supply continuity.

Both parts carry identical REACH and ECCN classifications (REACH Unaffected, EAR99), confirming regulatory equivalence for export and environmental compliance purposes.

Frequently Asked Questions (FAQ)

Q: Can the S2M-E3/52T directly replace the CS2M-E3/H in all applications?

A: Both parts share identical voltage ratings (1000 V), package types (DO-214AA/SMB), and operating temperature ranges (-55°C to 150°C). The S2M-E3/52T has a lower average rectified current rating (1.5 A versus 2 A). Direct substitution is valid only if the circuit design operates at or below 1.5 A average rectified current.

Q: What is the significance of the different current ratings?

A: The CS2M-E3/H supports 2 A average rectified current, while the S2M-E3/52T supports 1.5 A. If the circuit requires the full 2 A capability, the substitute part is not suitable. If the circuit operates below 1.5 A, the substitute part is electrically compatible.

Q: Are there packaging differences between these parts?

A: Both the CS2M-E3/H and S2M-E3/52T use the DO-214AA (SMB) surface mount package. No PCB layout modifications are required for substitution. The S2M-E3/52T is supplied in Cut Tape (CT) packaging, while the main part packaging is not specified in the available data.

Q: What is the difference in reverse leakage current?

A: The CS2M-E3/H has a reverse leakage current of 5 µA at 1000 V, while the S2M-E3/52T has 1 µA at 1000 V. The lower leakage current of the substitute part represents improved performance and does not create compatibility issues.

Q: Why is the CS2M-E3/H classified as obsolete?

A: The CS2M-E3/H is listed as obsolete by the manufacturer. The S2M-E3/52T is the active replacement component, ensuring continued availability and regulatory compliance for new designs and production continuity.

Q: Are there compliance differences between the two parts?

A: The S2M-E3/52T is ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited), supporting modern regulatory requirements. Both parts are REACH Unaffected and carry EAR99 ECCN classification, confirming equivalent regulatory status for export purposes.

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