SF26-AP Equivalent & Substitute Parts

Part Overview

The SF26-AP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 400 V DC reverse voltage and 2 A average rectified current in a DO-15 through-hole package. This part is classified as obsolete, necessitating identification of active equivalent and substitute components for ongoing design requirements and procurement needs. The SF26-AP operates across a junction temperature range of -55°C to 125°C and features fast recovery characteristics with a reverse recovery time of 35 nanoseconds.

Substiute Parts

SF26-AP

Micro Commercial CoIn Stock: 1138SF26-AP Datasheet

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SF26G-AP

Micro Commercial CoIn Stock: 1158SF26G-AP Datasheet

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FR204G A0G

Taiwan Semiconductor CorporationIn Stock: 751FR204G A0G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SF26-AP are identified based on electrical and mechanical parameter compatibility. The primary substitution criteria are:

• Voltage Rating: DC reverse voltage of 400 V or higher
• Current Rating: Average rectified current of 2 A or higher
• Forward Voltage: Maximum forward voltage of 1.3 V or lower at 2 A
• Package Type: Through-hole axial configuration (DO-15 or DO-204AC equivalent)
• Reverse Leakage: Maximum reverse leakage current of 5 µA or lower at rated voltage
• Technology: Standard rectifier diode technology

The SF26G-AP is a direct equivalent from the same manufacturer with identical electrical specifications but active product status and extended temperature range. The FR204G A0G from Taiwan Semiconductor Corporation meets all core electrical parameters with compatible packaging, though with different reverse recovery time and capacitance characteristics within acceptable ranges for general-purpose rectification applications.

Parameter Comparison

Engineering Selection Recommendations

SF26G-AP is the primary substitute for SF26-AP. Both parts are manufactured by Micro Commercial Co with identical electrical specifications and packaging. The SF26G-AP carries active product status, ensuring long-term availability and supply chain continuity. The SF26G-AP provides an extended operating temperature range (-65°C to 150°C versus -55°C to 125°C), offering improved thermal performance margins. Both parts maintain ROHS3 compliance and unlimited moisture sensitivity classification.

FR204G A0G from Taiwan Semiconductor Corporation is a secondary substitute option. This part meets all core electrical requirements: 400 V reverse voltage, 2 A average rectified current, 1.3 V forward voltage at 2 A, and 5 µA reverse leakage current. The FR204G A0G features a longer reverse recovery time of 150 nanoseconds compared to 35 nanoseconds in the SF26-AP, which is acceptable for general-purpose rectification but may affect performance in high-frequency switching applications. The FR204G A0G also exhibits lower capacitance (10 pF versus 30 pF), which may provide advantages in certain circuit topologies. This part is active and ROHS3 compliant with extended temperature range support (-55°C to 150°C).

Selection between SF26G-AP and FR204G A0G depends on application-specific requirements regarding reverse recovery time and capacitance characteristics. For direct replacement with minimal circuit redesign, SF26G-AP is the preferred choice. For applications where lower capacitance or longer recovery time is beneficial, FR204G A0G provides a viable alternative.

Frequently Asked Questions (FAQ)

Q: Can SF26G-AP be used as a direct replacement for SF26-AP?

A: Yes. The SF26G-AP is electrically and mechanically identical to the SF26-AP with matching voltage rating (400 V), current rating (2 A), forward voltage (1.3 V @ 2 A), reverse recovery time (35 ns), and reverse leakage current (5 µA @ 400 V). The SF26G-AP is active and available, whereas SF26-AP is obsolete. No circuit modifications are required.

Q: What is the difference between SF26G-AP and FR204G A0G?

A: Both parts share identical voltage, current, forward voltage, and reverse leakage specifications. The primary differences are: FR204G A0G has a longer reverse recovery time (150 ns versus 35 ns), lower capacitance (10 pF versus 30 pF), and is manufactured by Taiwan Semiconductor Corporation rather than Micro Commercial Co. Both are active products with ROHS3 compliance.

Q: Are the DO-15 and DO-204AC packages interchangeable?

A: Yes. DO-15 and DO-204AC are equivalent axial through-hole package designations for this diode category. Both packages use identical lead spacing and mounting footprints suitable for through-hole PCB assembly.

Q: Does the extended temperature range of SF26G-AP affect circuit performance?

A: The SF26G-AP operating range of -65°C to 150°C encompasses the SF26-AP range of -55°C to 125°C. Extended temperature capability provides additional design margin and may improve reliability in temperature-variable environments. No performance degradation occurs within the original SF26-AP temperature specification.

Q: Which substitute is better for high-frequency switching applications?

A: The SF26G-AP is preferred for high-frequency applications due to its faster reverse recovery time of 35 nanoseconds compared to FR204G A0G at 150 nanoseconds. Faster recovery reduces switching losses and improves efficiency in rectification circuits operating at elevated frequencies.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. SF26G-AP and FR204G A0G are both ROHS3 compliant with moisture sensitivity level 1 (unlimited), matching the compliance profile of the original SF26-AP.