ES1B Equivalent & Substitute Parts Reference

Part Overview

The ES1B is a general-purpose rectifier diode manufactured by SMC Diode Solutions, rated for 100 V DC reverse voltage and 1 A average rectified current in a surface mount SMA (DO-214AC) package. This component is classified as Active product status and is RoHS3 compliant with unlimited moisture sensitivity level (MSL 1). The ES1B serves as a standard fast recovery diode suitable for general rectification applications requiring compact surface mount packaging. Substitute parts are identified to provide design flexibility, supply chain alternatives, and packaging options while maintaining electrical and mechanical compatibility.

Substiute Parts

ES1B

SMC Diode SolutionsIn Stock: 65153ES1B Datasheet

Current PartRFQ

ES1B

YAGEOIn Stock: 65171ES1B Datasheet

Parametric EquivalentRFQ

ES1BH

Taiwan Semiconductor CorporationIn Stock: 16126ES1BH Datasheet

Parametric EquivalentRFQ

ES1B_R1_00001

Panjit International Inc.In Stock: 269138ES1B_R1_00001 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ES1B are qualified based on the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Voltage - DC Reverse (Vr) (Max): 100 V
• Current - Average Rectified (Io): 1 A
• Voltage - Forward (Vf) (Max) @ If: 950 mV @ 1 A
• Reverse Recovery Time (trr): 35 ns
• Package / Case: DO-214AC, SMA
• Mounting Type: Surface Mount
• Operating Temperature - Junction: -55°C to 150°C
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

All identified substitute parts meet these core electrical specifications and package requirements. Variations in secondary parameters such as reverse leakage current and capacitance do not preclude substitution when primary parameters align. Packaging format differences (Cut Tape, Tape & Reel) represent logistical variants of the same electrical component and do not affect functional compatibility.

Parameter Comparison

Engineering Selection Recommendations

ES1B (YAGEO): This substitute maintains identical electrical ratings (100 V, 1 A, 950 mV forward voltage) and RoHS3 compliance with MSL 1. Packaging is available in Cut Tape and Digi-Reel formats, providing supply chain flexibility. Suitable for applications where packaging format preference or supplier diversification is required.

ES1BH (Taiwan Semiconductor Corporation): This substitute meets all primary electrical specifications and includes AEC-Q101 automotive qualification with Automotive grade designation. REACH status differs (Unaffected vs. Affected for the original ES1B). Reverse leakage current and capacitance parameters are identical to the original specification. Selection of this part is appropriate for automotive applications or designs requiring automotive-qualified components.

ES1B_R1_00001 (Panjit International Inc.): This substitute provides identical electrical performance across all primary parameters with superior reverse leakage characteristics (1 µA vs. 5 µA) and lower capacitance (7 pF vs. 45 pF). REACH status is Unaffected. Tape & Reel packaging format is standard for high-volume production. This part represents the highest inventory availability (269,080 pcs) among all substitutes.

All substitute parts maintain Active product status and full RoHS3 compliance. Selection between substitutes depends on supply chain requirements, packaging format preference, automotive qualification necessity, and inventory availability.

Frequently Asked Questions (FAQ)

Q: Can ES1B (YAGEO) be used as a direct replacement for ES1B (SMC Diode Solutions)?

A: Yes. Both parts share identical electrical specifications: 100 V reverse voltage, 1 A average rectified current, 950 mV forward voltage at 1 A, and 35 ns reverse recovery time. Both are RoHS3 compliant with MSL 1. The primary difference is packaging format (Cut Tape & Digi-Reel vs. standard packaging), which does not affect electrical compatibility.

Q: What is the significance of the ES1BH automotive qualification?

A: The ES1BH carries AEC-Q101 qualification and Automotive grade designation. This indicates the part has undergone automotive-specific reliability testing and is suitable for automotive applications. If your design requires automotive-qualified components, ES1BH is the appropriate selection. Non-automotive applications can use any of the three substitutes.

Q: How do reverse leakage current differences affect substitution?

A: The ES1B_R1_00001 exhibits lower reverse leakage current (1 µA vs. 5 µA at 100 V). Lower leakage current generally indicates superior device quality and reduced power dissipation in reverse bias conditions. This difference does not prevent substitution but may provide performance benefits in applications sensitive to leakage current.

Q: Are there packaging compatibility concerns when switching between substitutes?

A: All substitutes use the DO-214AC (SMA) surface mount package with identical mechanical dimensions and pin configuration. Packaging format differences (Cut Tape, Digi-Reel, Tape & Reel) refer to supply and handling methods, not component geometry. PCB footprints and assembly processes remain unchanged across all substitutes.

Q: What does REACH Affected vs. Unaffected status mean for substitution?

A: REACH Affected status indicates the manufacturer has declared REACH compliance for the substance. REACH Unaffected indicates the part does not contain substances of concern under REACH regulations. Both statuses are compliant. Selection between them depends on supply chain documentation requirements and regional regulatory preferences.

Q: Can ES1B_R1_00001 be used in high-frequency switching applications?

A: Yes. The ES1B_R1_00001 maintains the 35 ns reverse recovery time specification required for fast recovery diode operation. The lower capacitance (7 pF vs. 45 pF) may provide improved performance in high-frequency applications by reducing switching losses and parasitic effects.

Q: Is inventory availability a factor in selecting a substitute?

A: Inventory levels are provided for reference: ES1B (SMC) 65,100 pcs, ES1B (YAGEO) 65,100 pcs, ES1BH (TSC) 16,042 pcs, ES1B_R1_00001 (Panjit) 269,080 pcs. Higher inventory availability may reduce lead times and supply risk for high-volume production requirements.