FR2B-LTP Equivalent & Substitute Parts

Part Overview

The FR2B-LTP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 100V DC reverse voltage and 2A average rectified current in a surface mount DO-214AA (SMB) package. This component is classified as "Not For New Designs," indicating it has reached end-of-life status. Identifying equivalent substitute parts is necessary for maintaining existing designs, supporting legacy systems, and ensuring continued availability for production and repair applications.

Substiute Parts

FR2B-LTP

Micro Commercial CoIn Stock: 755FR2B-LTP Datasheet

Current PartRFQ

ES2B-M3/52T

Vishay General Semiconductor - Diodes DivisionIn Stock: 673ES2B-M3/52T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the FR2B-LTP is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Voltage - DC Reverse (Vr) (Max): 100V
• Current - Average Rectified (Io): 2A
• Package / Case: DO-214AA, SMB
• Mounting Type: Surface Mount
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)

Compliance Requirements:

• RoHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

The ES2B-M3/52T manufactured by Vishay General Semiconductor - Diodes Division meets all mandatory matching parameters and compliance requirements. This part is classified as "Active" product status, making it suitable for new production and ongoing support of legacy designs requiring FR2B-LTP replacement.

Parameter Comparison

Engineering Selection Recommendations

The ES2B-M3/52T is the qualified substitute for the FR2B-LTP based on the following engineering criteria:

Electrical Equivalence: Both parts share identical voltage and current ratings (100V, 2A), identical package designation (DO-214AA, SMB), and identical speed classification (Fast Recovery ≤ 500ns, > 200mA). The ES2B-M3/52T demonstrates superior performance characteristics with a reverse recovery time of 30ns compared to the FR2B-LTP's 150ns, indicating faster switching behavior.

Compliance Alignment: Both parts maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with current manufacturing and storage standards.

Product Status: The ES2B-M3/52T carries "Active" product status, providing long-term availability and manufacturing support. The FR2B-LTP's "Not For New Designs" classification necessitates transition to an active equivalent for sustained production.

Temperature Range: The ES2B-M3/52T extends the lower operating temperature limit to -55°C compared to the FR2B-LTP's -50°C, providing enhanced performance margin in low-temperature applications.

Frequently Asked Questions (FAQ)

Q: Can the ES2B-M3/52T directly replace the FR2B-LTP in existing circuit designs?

A: Yes. Both parts are electrically equivalent with identical voltage ratings (100V), current ratings (2A), package type (DO-214AA, SMB), and speed classification (Fast Recovery ≤ 500ns, > 200mA). Direct substitution is supported without circuit modification.

Q: What are the key differences between these two parts?

A: The primary differences are product status and performance characteristics. The ES2B-M3/52T is an active product with superior reverse recovery time (30ns versus 150ns), lower junction capacitance (18pF versus 50pF), and an extended lower operating temperature limit (-55°C versus -50°C). These differences represent performance improvements rather than incompatibilities.

Q: Are both parts available in the same packaging format?

A: Yes. Both the FR2B-LTP and ES2B-M3/52T are supplied in DO-214AA (SMB) surface mount packages on Tape & Reel (TR) format, ensuring identical PCB assembly compatibility and handling procedures.

Q: Why is the FR2B-LTP marked "Not For New Designs"?

A: This classification indicates the part has reached end-of-life status and is no longer recommended for new product development. Existing inventory remains available for legacy system support, but new designs should transition to active alternatives such as the ES2B-M3/52T.

Q: Do both parts meet current regulatory compliance standards?

A: Yes. Both the FR2B-LTP and ES2B-M3/52T are ROHS3 compliant and carry MSL Level 1 (Unlimited) moisture sensitivity ratings, meeting current manufacturing and environmental standards.

Q: What is the significance of the reverse recovery time difference?

A: The ES2B-M3/52T's 30ns reverse recovery time is significantly faster than the FR2B-LTP's 150ns. This improvement reduces switching losses and electromagnetic interference in high-frequency applications, though both parts meet the Fast Recovery classification (≤ 500ns, > 200mA).

Q: Are there any thermal considerations when substituting these parts?

A: The ES2B-M3/52T supports a wider operating temperature range (-55°C to 150°C versus -50°C to 150°C), providing additional thermal margin. Both parts are suitable for standard industrial temperature environments.