SF16-AP Equivalent & Substitute Parts

Part Overview

The SF16-AP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 400 V DC reverse voltage and 1 A average rectified current in a DO-41 through-hole package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The SF16-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. Identification of compatible substitute diodes ensures design flexibility while maintaining electrical and mechanical compatibility with existing circuit requirements.

Substiute Parts

SF16-AP

Micro Commercial CoIn Stock: 1009SF16-AP Datasheet

Current PartRFQ

SF16G-AP

Micro Commercial CoIn Stock: 1192SF16G-AP Datasheet

DirectRFQ

UF1G B0G

Taiwan Semiconductor CorporationIn Stock: 1003UF1G B0G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SF16-AP are selected based on strict electrical and mechanical parameter matching. The primary substitution criteria are:

Electrical Parameters:

• Voltage - DC Reverse (Vr) (Max): 400 V minimum
• Current - Average Rectified (Io): 1 A minimum
• Voltage - Forward (Vf) (Max) @ If: Must not exceed application requirements
• Reverse Recovery Time (trr): Fast recovery characteristic (≤ 500 ns)
• Current - Reverse Leakage @ Vr: 5 µA @ 400 V maximum

Mechanical Parameters:

• Mounting Type: Through Hole
• Package / Case: DO-204AL, DO-41, or Axial equivalent
• Supplier Device Package: DO-41 or DO-204AL (DO-41)

Compliance Parameters:

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts must meet or exceed all electrical specifications while maintaining through-hole axial package compatibility. Product status (Active vs. Obsolete) is noted for procurement planning but does not disqualify electrical equivalence.

Parameter Comparison

Engineering Selection Recommendations

SF16G-AP (Direct Substitute - Recommended for Primary Selection)

The SF16G-AP is the direct equivalent to the SF16-AP, manufactured by the same supplier (Micro Commercial Co) with identical electrical specifications. This part is currently in active production status with 1134 units in stock, providing superior procurement availability compared to the obsolete SF16-AP. The SF16G-AP maintains all critical electrical parameters: 400 V reverse voltage, 1 A average rectified current, 1.3 V forward voltage drop at 1 A, and 35 ns reverse recovery time. The extended operating temperature range (-55°C to 150°C versus -55°C to 125°C) provides additional thermal margin. Both parts are ROHS3 compliant with MSL 1 rating. The primary difference is packaging format (Tape & Box for SF16G-AP), which does not affect electrical or mechanical compatibility. This part is suitable for direct replacement in all applications currently using the SF16-AP.

UF1G B0G (Alternative Substitute - Secondary Selection)

The UF1G B0G, manufactured by Taiwan Semiconductor Corporation, meets all critical electrical requirements for substitution: 400 V reverse voltage, 1 A average rectified current, and fast recovery characteristics. This part offers a lower forward voltage drop (1 V @ 1 A compared to 1.3 V), which may provide improved efficiency in power conversion applications. The UF1G B0G is currently in active production with 956 units in stock. The reverse recovery time is 50 ns, which is 15 ns longer than the SF16-AP but remains within fast recovery classification. Operating temperature range extends to 150°C. All compliance certifications (ROHS3, MSL 1, REACH Unaffected) are equivalent. This part is electrically and mechanically compatible with the SF16-AP and suitable for applications where forward voltage characteristics are a design consideration.

Compliance and Certification Basis

Both substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing and storage environments. The SF16G-AP includes REACH Unaffected status confirmation. Selection between SF16G-AP and UF1G B0G should be based on procurement availability, forward voltage requirements, and reverse recovery time specifications for the specific application circuit.

Frequently Asked Questions (FAQ)

Q: Can the SF16G-AP be used as a direct replacement for the SF16-AP?

A: Yes. The SF16G-AP is electrically and mechanically equivalent to the SF16-AP. Both parts share identical voltage ratings (400 V), current ratings (1 A), forward voltage characteristics (1.3 V @ 1 A), and reverse recovery time (35 ns). The SF16G-AP is packaged in Tape & Box format while the SF16-AP uses standard packaging, but this does not affect circuit compatibility. The SF16G-AP is currently in active production, making it the preferred choice for new procurement.

Q: What are the key differences between SF16G-AP and UF1G B0G?

A: Both parts meet the 400 V / 1 A electrical requirements and are compatible with DO-41 through-hole applications. The primary differences are: (1) Forward voltage drop: UF1G B0G is 1 V @ 1 A versus SF16G-AP at 1.3 V @ 1 A, resulting in lower power dissipation; (2) Reverse recovery time: UF1G B0G is 50 ns versus SF16G-AP at 35 ns; (3) Manufacturer: SF16G-AP is Micro Commercial Co, UF1G B0G is Taiwan Semiconductor Corporation. Both are ROHS3 compliant and suitable for substitution.

Q: Are the DO-41 and DO-204AL packages interchangeable?

A: Yes. The DO-41 and DO-204AL are equivalent axial through-hole package designations for this diode category. Both parts in the substitute list use these package types and are mechanically compatible with circuits designed for the SF16-AP DO-41 package.

Q: What is the impact of the extended operating temperature range in substitute parts?

A: The SF16G-AP and UF1G B0G both extend the maximum junction temperature to 150°C, compared to 125°C for the SF16-AP. This provides additional thermal margin in applications operating near temperature limits but does not affect compatibility with circuits designed for the SF16-AP. The extended range is a performance advantage with no negative impact.

Q: Does the lower forward voltage of UF1G B0G affect circuit compatibility?

A: The lower forward voltage (1 V versus 1.3 V) of the UF1G B0G does not create compatibility issues. This characteristic reduces power dissipation and heat generation, which is beneficial in most applications. Circuits designed for the SF16-AP will function correctly with the UF1G B0G. The lower forward voltage may improve efficiency in power supply and rectification circuits.

Q: Are both substitute parts RoHS compliant?

A: Yes. Both SF16G-AP and UF1G B0G are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. The SF16G-AP additionally carries REACH Unaffected status. All three parts meet current environmental and regulatory requirements for electronic component manufacturing and use.

Q: What is the significance of the 35 ns versus 50 ns reverse recovery time difference?

A: Both parts are classified as fast recovery diodes (≤ 500 ns). The 15 ns difference between SF16G-AP (35 ns) and UF1G B0G (50 ns) is negligible for most general-purpose rectification applications. In high-frequency switching circuits, the faster recovery time of SF16G-AP may provide marginal advantages in reducing switching losses, but both parts are suitable for the SF16-AP application range.

Q: Can I use these substitute parts in high-temperature applications?

A: Yes. Both substitute parts are rated to 150°C junction temperature, compared to 125°C for the SF16-AP. This extended range makes them suitable for applications operating at elevated temperatures. Verify that your specific circuit design does not impose additional thermal constraints beyond the diode rating.