SF28-TP Equivalent & Substitute Parts

Part Overview

The SF28-TP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 600V DC reverse voltage and 2A average rectified current in a DO-15 through-hole package. This component is classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing design requirements and procurement needs. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts provide functional alternatives within acceptable parameter variations for the application.

Substiute Parts

SF28-TP

Micro Commercial CoIn Stock: 704SF28-TP Datasheet

Current PartRFQ

SF28G-TP

Micro Commercial CoIn Stock: 1004SF28G-TP Datasheet

DirectRFQ

RGP15J-E3/73

Vishay General Semiconductor - Diodes DivisionIn Stock: 10390RGP15J-E3/73 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the SF28-TP is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

• Voltage - DC Reverse (Vr) (Max): 600V minimum
• Mounting Type: Through Hole
• Package / Case: DO-15 or DO-204AC (axial configuration)
• RoHS Compliance: ROHS3 Compliant

Secondary Compatibility Parameters:

• Current - Average Rectified (Io): Equal to or greater than 2A
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
• Operating Temperature Range: Must encompass application requirements

The SF28-TP has two identified substitutes: SF28G-TP (direct equivalent from same manufacturer) and RGP15J-E3/73 (similar part from alternative manufacturer). SF28G-TP maintains identical electrical specifications with enhanced temperature range and active product status. RGP15J-E3/73 provides functional substitution with reduced current rating (1.5A versus 2A) and extended reverse recovery time (250ns versus 35ns), suitable for applications with lower current demands.

Parameter Comparison

Engineering Selection Recommendations

SF28G-TP (Direct Equivalent - Recommended Primary Substitute)

SF28G-TP is the preferred substitute for SF28-TP applications. This part maintains identical electrical specifications including 600V reverse voltage, 2A average rectified current, 35ns reverse recovery time, and fast recovery speed classification. SF28G-TP is manufactured by the same supplier (Micro Commercial Co) and carries active product status, ensuring long-term availability and supply chain continuity. The extended operating temperature range (-65 to 150°C versus -55 to 125°C) provides enhanced thermal margin. Forward voltage specification increases from 1.3V to 1.7V at 2A, representing acceptable variance within rectifier diode performance tolerances. ROHS3 compliance is maintained. Tape & Reel packaging accommodates both manual and automated assembly processes.

RGP15J-E3/73 (Functional Substitute - Current-Limited Applications)

RGP15J-E3/73 serves as a functional substitute for applications where average rectified current does not exceed 1.5A. This Vishay SUPERECTIFIER® part maintains 600V reverse voltage rating and identical reverse leakage current (5µA @ 600V). Forward voltage at rated current (1.3V @ 1.5A) matches the original SF28-TP specification. Extended operating temperature range (-65 to 175°C) and active product status support long-term deployment. Reverse recovery time extends to 250ns, acceptable for applications not requiring the 35ns performance of the original part. Cut Tape packaging supports automated assembly. This substitute is not suitable for applications requiring the full 2A current rating of SF28-TP.

Frequently Asked Questions (FAQ)

Q: Can SF28G-TP directly replace SF28-TP in all applications?

A: SF28G-TP is a direct electrical equivalent with identical voltage and current ratings. The forward voltage increase from 1.3V to 1.7V at 2A represents normal manufacturing variation within rectifier diode specifications and does not preclude direct substitution. Extended temperature range provides additional design margin. Verification of circuit thermal performance is standard engineering practice for any component substitution.

Q: What is the primary limitation of RGP15J-E3/73 as a substitute?

A: RGP15J-E3/73 is rated for 1.5A average rectified current, compared to 2A for SF28-TP. This part is suitable only for applications where circuit current requirements do not exceed 1.5A. Reverse recovery time extends to 250ns versus 35ns in the original part, which may affect switching performance in high-frequency applications. Electrical compatibility is otherwise maintained at 600V reverse voltage and identical reverse leakage characteristics.

Q: Are all three parts RoHS compliant?

A: Yes. SF28-TP, SF28G-TP, and RGP15J-E3/73 are all ROHS3 compliant, meeting environmental and regulatory requirements for electronic component manufacturing and use.

Q: What packaging options are available for these substitutes?

A: SF28-TP is supplied in bulk packaging. SF28G-TP is available in Tape & Reel (TR) format, suitable for automated pick-and-place assembly. RGP15J-E3/73 is supplied in Cut Tape (CT) format. All three parts use identical DO-15 axial through-hole package configuration for mechanical compatibility.

Q: What is the temperature operating range difference between these parts?

A: SF28-TP operates from -55 to 125°C. SF28G-TP extends this to -65 to 150°C. RGP15J-E3/73 provides the widest range at -65 to 175°C. Selection depends on application thermal requirements and environmental conditions.

Q: Are there any compliance or certification differences between these parts?

A: All three parts are ROHS3 compliant. SF28G-TP includes REACH Unaffected status. RGP15J-E3/73 also includes REACH Unaffected status. All parts carry EAR99 ECCN classification and identical HTSUS code (8541.10.0080). Moisture Sensitivity Level is 1 (Unlimited) for all parts.