ER2D Equivalent & Substitute Parts

Part Overview

The ER2D is a general-purpose rectifier diode manufactured by SMC Diode Solutions, rated for 200 V DC reverse voltage and 2 A average rectified current in a surface mount SMB (DO-214AA) package. This diode is designed for standard rectification applications requiring fast recovery characteristics and is currently in active production status.

Substitute parts are identified when equivalent electrical performance can be achieved within the allowed parameter ranges for this diode category, particularly when the main part faces supply constraints, packaging format changes, or when design requirements permit operation at higher current ratings within the same voltage class.

Substiute Parts

ER2D

SMC Diode SolutionsIn Stock: 22190ER2D Datasheet

Current PartRFQ

ES3DB R5G

Taiwan Semiconductor CorporationIn Stock: 1157ES3DB R5G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ER2D is determined by the following criteria:

Mandatory Matching Parameters:

• Voltage - DC Reverse (Vr) (Max): 200 V
• Package / Case: DO-214AA, SMB (surface mount)
• Speed Classification: Fast Recovery ≤ 500 ns, > 200 mA (Io)
• Reverse Recovery Time (trr): 35 ns

Allowable Parameter Variations:

• Current - Average Rectified (Io): Equal to or greater than 2 A
• Voltage - Forward (Vf): Within acceptable forward voltage drop range for 200 V rectifier class
• Current - Reverse Leakage: Within acceptable leakage range for 200 V rectifier class
• Operating Temperature Range: Must support minimum -55°C to 150°C junction temperature
• RoHS Compliance: ROHS3 Compliant status required

The ES3DB R5G qualifies as a substitute because it maintains the same 200 V reverse voltage rating, identical package format (DO-214AA/SMB), matching fast recovery speed characteristics, and identical reverse recovery time. The higher current rating (3 A vs. 2 A) represents an upward-compatible substitution suitable for applications where the ER2D is specified but higher current capacity is available or required.

Parameter Comparison

Engineering Selection Recommendations

ER2D (Primary Selection): The ER2D remains the preferred component for new designs and production orders. It is in active production status with substantial inventory availability (22,149 pcs), supplied in Tape & Reel format suitable for automated assembly. The part carries full ROHS3 compliance and REACH Affected status documentation. The operating temperature range extends to -65°C, providing broader low-temperature performance than the substitute.

ES3DB R5G (Substitute Selection): The ES3DB R5G is suitable as a substitute only when the ER2D is unavailable and the application design permits the following conditions: (1) higher current rating (3 A vs. 2 A) is acceptable or beneficial; (2) slightly elevated forward voltage drop (1 V @ 3 A vs. 950 mV @ 2 A) does not exceed thermal or efficiency constraints; (3) higher reverse leakage current (10 µA vs. 5 µA) is within acceptable limits; (4) the narrower operating temperature range (-55°C minimum vs. -65°C) meets application requirements; (5) Cut Tape packaging format is compatible with assembly processes; (6) the discontinued status at DiGi Electronics does not create supply chain risk for the application timeline.

ROHS3 compliance is maintained in both parts, ensuring regulatory alignment for restricted substance directives.

Frequently Asked Questions (FAQ)

Q: Can the ES3DB R5G be used as a direct replacement for the ER2D in all applications?

A: The ES3DB R5G is electrically compatible for applications where the ER2D is specified, provided the application design accommodates the higher current rating (3 A), slightly higher forward voltage drop, and higher reverse leakage current. The narrower minimum operating temperature (-55°C vs. -65°C) must be verified against application requirements. The discontinued status should be evaluated for long-term supply availability.

Q: What is the significance of the current rating difference between ER2D (2 A) and ES3DB R5G (3 A)?

A: The ES3DB R5G has a higher average rectified current rating, which represents an upward-compatible substitution. This means the ES3DB R5G can handle the 2 A load specified for the ER2D without exceeding its rated current. However, the forward voltage drop is specified at the higher 3 A rating, so actual performance at 2 A operation may differ from the tabulated value.

Q: Are there packaging compatibility issues between Tape & Reel (ER2D) and Cut Tape (ES3DB R5G) formats?

A: Both parts use the same DO-214AA/SMB surface mount package, ensuring mechanical and electrical compatibility on PCBs. The difference is in the supply format: Tape & Reel is optimized for high-volume automated assembly, while Cut Tape is suitable for lower-volume or manual assembly processes. Component placement and soldering procedures remain identical.

Q: What does the "Discontinued at DiGi Electronics" status mean for the ES3DB R5G?

A: This status indicates that the ES3DB R5G is no longer actively stocked or distributed through DiGi Electronics as a primary supplier. However, the part may remain available through alternative distributors or direct manufacturer channels. Availability should be confirmed before committing to this substitute for production use.

Q: How do the reverse recovery time specifications compare?

A: Both the ER2D and ES3DB R5G have identical reverse recovery time (trr) of 35 ns, confirming they belong to the same fast recovery diode classification. This parameter is critical for switching applications and high-frequency rectification, where both parts perform identically.

Q: Is the higher reverse leakage current (10 µA vs. 5 µA) a concern for the ES3DB R5G?

A: The reverse leakage current difference is within the normal range for 200 V rectifier diodes and is specified at the same 200 V reverse voltage condition. For most applications, this difference is negligible. However, for precision analog circuits or applications with strict leakage requirements, the lower leakage of the ER2D may be preferred.