ES1CL Equivalent & Substitute Parts

Part Overview

The ES1CL is a 150V, 1A super fast recovery diode manufactured by Taiwan Semiconductor Corporation, designed for surface mount applications in the SOD-123 package. This component is classified as "Not For New Designs," indicating it has reached end-of-life status. Organizations currently using ES1CL in production or maintenance applications require qualified substitute components that maintain functional compatibility while meeting current design standards and compliance requirements.

Substiute Parts

ES1CL

Taiwan Semiconductor CorporationIn Stock: 10424ES1CL Datasheet

Current PartRFQ

ES1DLW

Taiwan Semiconductor CorporationIn Stock: 35139ES1DLW Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ES1CL is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Requirements:

• Reverse voltage rating must equal or exceed 150V
• Average rectified current must equal or exceed 1A
• Forward voltage drop must not exceed 950 mV @ 1A
• Reverse recovery time must not exceed 35 ns
• Reverse leakage current must not exceed 5 µA at rated voltage

Mechanical Compatibility Requirements:

• Surface mount mounting type
• Package footprint compatibility with SOD-123 or equivalent form factor
• Operating temperature range must encompass -55°C to 150°C minimum

Compliance Requirements:

• ROHS3 compliance mandatory
• REACH compliance status must be unaffected or compliant

The ES1DLW qualifies as a direct substitute based on these parameters. While the ES1DLW features a higher reverse voltage rating (200V) and extended temperature range (-55°C to 175°C), these represent improvements over the original specification and do not compromise compatibility. The package designation differs (SOD-123W versus SOD-123), requiring verification of PCB footprint compatibility before implementation.

Parameter Comparison

Engineering Selection Recommendations

The ES1DLW is the qualified substitute for the ES1CL based on the following factors:

Product Status Alignment: The ES1CL is designated "Not For New Designs," while the ES1DLW maintains "Active" status. This transition ensures access to current manufacturing, quality assurance processes, and long-term supply continuity.

Electrical Performance: The ES1DLW meets or exceeds all electrical specifications of the ES1CL. The increased reverse voltage rating (200V versus 150V) provides additional design margin without introducing incompatibility. Identical forward voltage drop, reverse recovery time, and leakage current specifications ensure functional equivalence in circuit operation.

Compliance Certification: Both components maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for current production environments.

Temperature Operating Range: The ES1DLW extends the maximum junction temperature to 175°C, compared to the ES1CL's 150°C limit. This enhancement supports applications with elevated thermal requirements.

Package Consideration: The ES1DLW utilizes the SOD-123W package variant rather than the SOD-123 package of the original part. PCB footprint compatibility must be verified during implementation, as the "W" designation indicates a wider package variant. Physical dimensions and land pattern requirements differ between these package types.

Frequently Asked Questions (FAQ)

Q: Can ES1DLW be used as a direct drop-in replacement for ES1CL?

A: Electrical substitution is valid. However, the package designation change from SOD-123 to SOD-123W requires PCB footprint verification. The wider package variant may not fit existing PCB layouts without modification. Consult package datasheets for dimensional specifications before implementation.

Q: Why does the ES1DLW have a higher voltage rating (200V) than the ES1CL (150V)?

A: The higher voltage rating represents an improved specification that does not compromise compatibility. Circuits designed for 150V operation function correctly with a 200V-rated component, as the device operates within its rated envelope. The additional voltage margin may provide enhanced reliability in applications subject to transient overvoltage conditions.

Q: Are there any performance differences between ES1CL and ES1DLW in circuit operation?

A: No performance differences exist in the specified electrical parameters. Forward voltage drop, reverse recovery time, and leakage current are identical. The ES1DLW operates identically to the ES1CL within the original design specifications.

Q: What is the significance of the "W" designation in SOD-123W?

A: The "W" indicates a wider package variant of the SOD-123 standard. This affects physical dimensions and PCB land pattern requirements. The wider package may offer improved thermal performance or mechanical robustness in certain applications but requires PCB redesign if the original layout was designed for standard SOD-123 dimensions.

Q: Is the ES1DLW available in the same packaging format (Tape & Reel)?

A: Yes, the ES1DLW is supplied in Tape & Reel (TR) format, matching the original ES1CL packaging. This maintains compatibility with automated assembly processes.

Q: What is the Moisture Sensitivity Level (MSL) of the ES1DLW?

A: The ES1DLW is rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. This simplifies storage and handling requirements compared to components with higher MSL ratings.

Q: Can ES1CL inventory be replaced with ES1DLW in existing production?

A: Yes, provided PCB footprint compatibility is confirmed for the SOD-123W package. The electrical specifications and compliance certifications support direct functional substitution. Qualification testing should be performed to validate performance in the specific application circuit before full production transition.