ER1A-TP Equivalent & Substitute Parts

Part Overview

The ER1A-TP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 50 V DC reverse voltage and 1 A average rectified current in a surface mount DO-214AA (HSMB) package. This component is classified as obsolete, necessitating identification of active equivalent parts for ongoing design requirements and procurement needs. The fast recovery characteristic (≤500 ns) and compact SMB form factor make this diode suitable for standard rectification applications in consumer and industrial electronics.

Substiute Parts

ER1A-TP

Micro Commercial CoIn Stock: 1136ER1A-TP Datasheet

Current PartRFQ

RS2A-E3/52T

Vishay General Semiconductor - Diodes DivisionIn Stock: 8012RS2A-E3/52T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ER1A-TP is determined by strict electrical and mechanical compatibility criteria. The following parameters establish the substitution basis:

Primary Compatibility Criteria:

• Voltage rating: Minimum 50 V DC reverse voltage
• Package type: DO-214AA (SMB) surface mount form factor
• Speed classification: Fast recovery diode (≤500 ns)
• Reverse leakage: Maximum 5 µA @ 50 V
• Mounting: Surface mount technology
• RoHS compliance: ROHS3 Compliant
• Moisture sensitivity: MSL 1 (Unlimited)

Secondary Compatibility Criteria:

• Current rating: Equal to or greater than 1 A average rectified current
• Operating temperature range: Minimum -50°C to 150°C junction temperature
• Reverse recovery time: Specified value for fast recovery classification

The RS2A-E3/52T meets all primary and secondary criteria, with enhanced current rating (1.5 A) and active product status, making it a direct electrical and mechanical substitute for the obsolete ER1A-TP.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: RS2A-E3/52T

The RS2A-E3/52T is the qualified substitute for the obsolete ER1A-TP based on the following engineering factors:

1. Electrical Equivalence: Both devices share identical voltage rating (50 V), reverse leakage current (5 µA @ 50 V), and fast recovery speed classification. The RS2A-E3/52T provides higher current capacity (1.5 A vs. 1 A), which is compatible with applications designed for the ER1A-TP.

2. Package Compatibility: Both components use the DO-214AA (SMB) surface mount package, ensuring mechanical and thermal compatibility with existing PCB layouts and assembly processes.

3. Compliance Status: The RS2A-E3/52T maintains ROHS3 compliance and MSL 1 rating, matching the environmental and regulatory requirements of the original part.

4. Product Availability: The RS2A-E3/52T holds active product status with established supply chain availability, eliminating obsolescence risk associated with the ER1A-TP.

5. Temperature Range: The substitute provides an extended operating temperature range (-55°C to 150°C vs. -50°C to 150°C), offering improved performance margin in extreme thermal environments.

Selection of the RS2A-E3/52T is appropriate for direct replacement in applications where the ER1A-TP is specified, provided that the circuit design accommodates the specified electrical characteristics of the substitute device.

Frequently Asked Questions (FAQ)

Q: Can the RS2A-E3/52T directly replace the ER1A-TP in existing designs?

A: Yes. Both devices share the same voltage rating (50 V), package type (DO-214AA/SMB), and fast recovery speed classification. The RS2A-E3/52T is rated for higher current (1.5 A vs. 1 A), making it electrically compatible with circuits designed for the ER1A-TP.

Q: What is the significance of the different reverse recovery times (50 ns vs. 150 ns)?

A: Both devices meet the fast recovery classification (≤500 ns). The ER1A-TP has a faster recovery time, but the RS2A-E3/52T remains within the fast recovery category. Applications sensitive to switching speed should verify that 150 ns recovery time meets circuit performance requirements.

Q: Are there packaging differences between these parts?

A: The ER1A-TP is supplied in bulk packaging, while the RS2A-E3/52T is supplied in Tape & Reel (TR) format. Both use the same DO-214AA (SMB) component package. Tape & Reel packaging is standard for automated assembly processes and does not affect electrical performance.

Q: Why does the RS2A-E3/52T have lower capacitance (20 pF vs. 45 pF)?

A: Capacitance variation is a normal characteristic difference between different diode designs. The lower capacitance of the RS2A-E3/52T may provide benefits in high-frequency applications by reducing parasitic effects. Applications with specific capacitance requirements should verify compatibility.

Q: Is the extended temperature range of the RS2A-E3/52T (-55°C to 150°C) a concern?

A: No. The extended lower temperature limit (-55°C vs. -50°C) provides additional operational margin and does not create compatibility issues. The upper temperature limit remains identical at 150°C.

Q: Are both parts RoHS compliant?

A: Yes. Both the ER1A-TP and RS2A-E3/52T are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, meeting current environmental and regulatory standards.

Q: What is the difference between the forward voltage specifications?

A: The RS2A-E3/52T specifies forward voltage (Vf) at 1.3 V @ 1.5 A. The ER1A-TP does not provide forward voltage data in the available specifications. Forward voltage is typically application-dependent and should be verified against circuit design requirements.