S1AB Equivalent & Substitute Parts

Part Overview

The S1AB is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, classified as a standard recovery diode in the DO-214AA (SMB) surface mount package. This component is rated for 50 V DC reverse voltage with 1 A average rectified current capacity and operates across a junction temperature range of -55°C to 150°C. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity for applications requiring compatible rectifier diode functionality within the specified electrical and mechanical parameters.

Substiute Parts

S1AB

Taiwan Semiconductor CorporationIn Stock: 3346S1AB Datasheet

Current PartRFQ

ES2A

YAGEOIn Stock: 26263ES2A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the S1AB are identified based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

• Voltage Rating: Maximum DC reverse voltage of 50 V or greater
• Current Rating: Average rectified current of 1 A or greater
• Package Type: DO-214AA (SMB) surface mount configuration
• Forward Voltage: Maximum forward voltage drop at rated current within acceptable operating range
• Reverse Leakage: Leakage current characteristics at rated reverse voltage
• Recovery Speed: Standard recovery classification
• Compliance: RoHS3 compliance and MSL 1 rating

The ES2A from YAGEO meets these criteria as a direct substitute, maintaining identical package geometry, voltage and current ratings, and compliance certifications. Both parts are classified as Active products with unlimited moisture sensitivity ratings, ensuring functional and environmental equivalence for surface mount rectifier applications.

Parameter Comparison

Engineering Selection Recommendations

Both the S1AB and ES2A are Active product status components with full RoHS3 compliance and EAR99 export classification. Selection between these parts is based on availability, packaging format, and forward voltage characteristics.

The S1AB is supplied in standard packaging with 3,240 pieces in current inventory. The ES2A is supplied in Tape & Reel (TR) format with 26,200 pieces in current inventory, providing higher volume availability for automated assembly processes.

The ES2A exhibits a lower maximum forward voltage drop of 0.95 V compared to the S1AB at 1.1 V, resulting in reduced power dissipation during forward conduction. This characteristic makes the ES2A suitable for applications where thermal management or efficiency is a design consideration, provided the lower forward voltage does not conflict with circuit requirements.

Both parts maintain identical reverse voltage ratings, package geometry, mounting type, and compliance certifications. Selection should be based on procurement requirements, assembly process compatibility, and thermal performance objectives within the specified electrical operating envelope.

Frequently Asked Questions (FAQ)

Q: Can the ES2A directly replace the S1AB in existing circuit designs?

A: Yes. Both parts share identical DO-214AA (SMB) package geometry, 50 V reverse voltage rating, 1 A current rating, and surface mount configuration. Electrical performance is compatible within the specified operating parameters.

Q: What is the significance of the lower forward voltage in the ES2A?

A: The ES2A forward voltage of 0.95 V is lower than the S1AB at 1.1 V. This reduces power dissipation during forward conduction. Verify that circuit designs do not depend on specific forward voltage characteristics before substitution.

Q: Are there compliance or regulatory differences between these parts?

A: No. Both parts are RoHS3 compliant, carry MSL 1 (Unlimited) moisture sensitivity ratings, and share identical ECCN (EAR99) and HTSUS (8541.10.0080) classifications.

Q: What packaging format differences exist between these parts?

A: The S1AB is supplied in standard packaging. The ES2A is supplied in Tape & Reel (TR) format, which is optimized for automated surface mount assembly processes and higher volume production runs.

Q: Are both parts suitable for the full operating temperature range of -55°C to 150°C?

A: The S1AB is specified for -55°C to 150°C junction temperature operation. The ES2A operating temperature range is not provided in the available data. Confirm ES2A temperature specifications with the manufacturer for applications requiring full temperature range operation.

Q: What reverse leakage current characteristics does the ES2A exhibit?

A: Reverse leakage current specifications for the ES2A are not provided in the available data. The S1AB is specified at 5 µA @ 50 V. Obtain detailed ES2A leakage specifications from the manufacturer for applications with strict leakage current requirements.