MUR405GP-AP Equivalent & Substitute Parts

Part Overview

The MUR405GP-AP is a fast recovery rectifier diode manufactured by Micro Commercial Co, rated for 50 V DC reverse voltage and 4 A average rectified current in a through-hole DO-201AD axial package. This component is classified as "Not For New Designs," indicating it has reached end-of-life status. Finding equivalent substitute parts is necessary for maintenance, repair, and legacy system support where original stock is depleted or unavailable.

Substiute Parts

MUR405GP-AP

Micro Commercial CoIn Stock: 1086MUR405GP-AP Datasheet

Current PartRFQ

SF41G B0G

Taiwan Semiconductor CorporationIn Stock: 849SF41G B0G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MUR405GP-AP is determined by strict equivalence across the following critical parameters:

Mandatory Matching Criteria:

• Voltage - DC Reverse (Vr) (Max): 50 V
• Current - Average Rectified (Io): 4 A
• Mounting Type: Through Hole
• Package / Case: DO-201AD, Axial
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)

Allowable Variation Parameters:

• Reverse Recovery Time (trr): May be equal to or lower than the original specification
• Current - Reverse Leakage @ Vr: May be equal to or lower than the original specification
• Capacitance @ Vr, F: May vary within acceptable limits for the application
• Product Status: Active status is preferred for long-term availability

The SF41G B0G from Taiwan Semiconductor Corporation meets all mandatory matching criteria and demonstrates improved performance characteristics in reverse recovery time and reverse leakage current, making it a direct functional equivalent.

Parameter Comparison

Engineering Selection Recommendations

The SF41G B0G is a direct functional substitute for the MUR405GP-AP based on electrical and mechanical parameter equivalence. The substitute part offers the following advantages:

Product Status: The SF41G B0G carries Active product status, ensuring continued availability and supply chain reliability compared to the MUR405GP-AP, which is designated "Not For New Designs."

Performance Characteristics: The SF41G B0G demonstrates improved reverse recovery time (35 ns versus 45 ns) and reduced reverse leakage current (5 µA versus 10 µA), both of which represent performance enhancements within the same functional class.

Compliance and Certifications: The SF41G B0G is RoHS3 Compliant and carries Moisture Sensitivity Level (MSL) 1 (Unlimited), providing enhanced environmental and handling compliance compared to the original part.

Package and Mounting: Both parts utilize identical DO-201AD axial through-hole packaging, ensuring direct mechanical and electrical compatibility in existing circuit board layouts and assembly processes.

Selection of the SF41G B0G is appropriate for applications requiring a 50 V, 4 A fast recovery rectifier diode in DO-201AD packaging where long-term component availability and improved performance characteristics are beneficial.

Frequently Asked Questions (FAQ)

Q: Can the SF41G B0G be used as a direct replacement for the MUR405GP-AP in existing designs?

A: Yes. Both parts share identical voltage ratings (50 V), current ratings (4 A), forward voltage characteristics (1 V @ 4 A), speed classification (Fast Recovery ≤ 500ns), and package type (DO-201AD axial through-hole). Electrical and mechanical compatibility is confirmed.

Q: What is the significance of the improved reverse recovery time in the SF41G B0G?

A: The SF41G B0G exhibits a reverse recovery time of 35 ns compared to 45 ns in the MUR405GP-AP. This represents faster switching behavior, which reduces switching losses and improves efficiency in rectification circuits. This improvement is within the same fast recovery classification and does not introduce incompatibility.

Q: Why is the MUR405GP-AP marked "Not For New Designs"?

A: This designation indicates the part has reached end-of-life status and is no longer recommended for new product development. Existing inventory remains available for maintenance and repair applications, but long-term supply cannot be guaranteed. The SF41G B0G, with Active product status, is the appropriate choice for sustained availability.

Q: Are there any thermal or operating temperature differences between these parts?

A: Both parts operate across the identical junction temperature range of -55°C to 150°C. No thermal performance differences exist between the MUR405GP-AP and SF41G B0G.

Q: Does the DO-201AD package differ between manufacturers?

A: No. The DO-201AD axial through-hole package is a standardized industry package. Both the MUR405GP-AP and SF41G B0G utilize identical package dimensions, pin spacing, and mechanical characteristics, ensuring direct board-level compatibility.

Q: What is the impact of the 20 pF capacitance difference between these parts?

A: The SF41G B0G exhibits 100 pF capacitance at 4 V, 1 MHz compared to 80 pF in the MUR405GP-AP. This 20 pF difference is within acceptable tolerance for rectifier diode applications and does not affect functional compatibility in standard power supply and rectification circuits.

Q: Is the SF41G B0G RoHS compliant?

A: Yes. The SF41G B0G is RoHS3 Compliant, meeting current environmental and hazardous substance restrictions. The MUR405GP-AP does not specify RoHS compliance status.