CS2K-E3/H Equivalent & Substitute Parts

Part Overview

The CS2K-E3/H is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 800 V DC reverse voltage with 2 A average rectified current in a DO-214AA (SMB) surface mount package. This part is classified as obsolete, necessitating identification of active equivalent components for continued circuit implementation. Substitute parts must maintain electrical compatibility across voltage, current, and thermal specifications while accommodating modern supply chain availability and compliance requirements.

Substiute Parts

CS2K-E3/H

Vishay General Semiconductor - Diodes DivisionIn Stock: 837CS2K-E3/H Datasheet

Current PartRFQ

S2K-E3/52T

Vishay General Semiconductor - Diodes DivisionIn Stock: 15399S2K-E3/52T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CS2K-E3/H is determined by the following critical electrical and mechanical parameters:

Voltage Compatibility: The substitute part must maintain the 800 V DC reverse voltage rating to ensure safe operation in the same circuit topology.

Package Compatibility: The DO-214AA (SMB) surface mount package is mandatory for mechanical and thermal interface compatibility with existing PCB layouts.

Operating Temperature Range: The -55°C to 150°C junction temperature range must be maintained or exceeded to support the same environmental operating conditions.

Current Rating: The substitute part current rating must be evaluated against circuit requirements. The CS2K-E3/H is rated for 2 A average rectified current; substitute parts with lower current ratings require circuit-level analysis to confirm adequacy.

Recovery Characteristics: Standard recovery speed (>500 ns, >200 mA) and reverse recovery time specifications must be compatible with circuit switching frequency and EMI performance requirements.

The S2K-E3/52T meets the voltage, package, temperature, and recovery speed criteria. The current rating difference (1.5 A versus 2 A) represents the primary design consideration for substitution eligibility.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The CS2K-E3/H is classified as obsolete, while the S2K-E3/52T is active. Active product status ensures continued manufacturing, supply chain availability, and compliance with current regulatory standards.

Compliance and Certifications: The S2K-E3/52T carries RoHS3 compliance and Moisture Sensitivity Level (MSL) 1 (Unlimited) ratings, indicating compatibility with modern manufacturing processes and long-term storage requirements. Both parts maintain REACH Unaffected and EAR99 ECCN classifications.

Electrical Equivalence: Both parts share identical 800 V reverse voltage ratings, standard recovery characteristics, and operating temperature ranges. The S2K-E3/52T exhibits lower reverse leakage current (1 µA versus 5 µA) and faster reverse recovery time (2 µs versus 2.1 µs), representing improved performance characteristics.

Current Rating Differential: The S2K-E3/52T is rated for 1.5 A average rectified current compared to the CS2K-E3/H 2 A rating. Circuit-level analysis is required to confirm that 1.5 A current capacity is adequate for the intended application. If the circuit operates at or near 2 A continuous current, the lower rating of the substitute part may not be suitable.

Inventory and Supply: The S2K-E3/52T maintains substantial inventory (15,300 pieces) in active distribution, supporting immediate procurement requirements.

Frequently Asked Questions (FAQ)

Q: Can the S2K-E3/52T directly replace the CS2K-E3/H in all applications?

A: Direct replacement is possible only when circuit current requirements do not exceed 1.5 A average rectified current. The S2K-E3/52T is rated for 1.5 A, while the CS2K-E3/H is rated for 2 A. Applications operating at or above 1.5 A require circuit redesign or alternative component selection.

Q: Are the package and mounting specifications identical?

A: Yes. Both parts use the DO-214AA (SMB) surface mount package with identical mechanical and thermal interface specifications. No PCB layout modifications are required for package compatibility.

Q: What is the significance of the lower reverse leakage current in the S2K-E3/52T?

A: The S2K-E3/52T exhibits 1 µA reverse leakage at 800 V compared to 5 µA for the CS2K-E3/H. Lower reverse leakage reduces standby power dissipation and improves circuit efficiency, particularly in high-impedance applications.

Q: Does the faster reverse recovery time of the S2K-E3/52T affect circuit performance?

A: The S2K-E3/52T reverse recovery time of 2 µs is marginally faster than the CS2K-E3/H at 2.1 µs. Both parts meet standard recovery speed specifications (>500 ns, >200 mA). The difference is negligible for most circuit applications and may provide minor EMI reduction benefits.

Q: What compliance advantages does the S2K-E3/52T offer?

A: The S2K-E3/52T carries RoHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, supporting modern manufacturing and long-term storage without degradation. The obsolete CS2K-E3/H does not carry these certifications.

Q: Is the higher capacitance of the S2K-E3/52T (16 pF versus 12 pF) a concern?

A: The capacitance difference (16 pF versus 12 pF at 4 V, 1 MHz) is minimal and does not affect circuit performance in standard rectifier applications. High-frequency switching circuits may require evaluation of this parameter.

Q: What is the forward voltage difference between these parts?

A: The S2K-E3/52T exhibits 1.15 V forward voltage at 1.5 A, compared to 1.2 V at 2 A for the CS2K-E3/H. The lower forward voltage of the substitute part reduces power dissipation and improves circuit efficiency.