SF803G C0G Equivalent & Substitute Parts

Part Overview

The SF803G C0G is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 150 V DC reverse voltage and 8 A average rectified current. The device is packaged in a TO-220AB through-hole configuration and is classified as a fast recovery diode with a reverse recovery time of 35 nanoseconds. This component is suitable for power supply circuits, industrial rectification applications, and general-purpose AC-to-DC conversion where moderate current handling and fast switching characteristics are required.

The SF803G C0G maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. Equivalent and substitute parts are identified based on matching or exceeding the critical electrical parameters: reverse voltage rating, average rectified current capacity, forward voltage characteristics, recovery speed classification, and through-hole mounting compatibility.

Substiute Parts

SF803G C0G

Taiwan Semiconductor CorporationIn Stock: 1064SF803G C0G Datasheet

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SBR10150CT

Diodes IncorporatedIn Stock: 15605SBR10150CT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SF803G C0G is determined by the following critical parameters:

Voltage Rating Compatibility: The substitute part must maintain a DC reverse voltage rating (Vr) equal to or greater than 150 V to ensure safe operation in the same circuit topology.

Current Capacity: The substitute part must support an average rectified current (Io) equal to or greater than 8 A per diode element to handle the same load conditions without thermal stress or performance degradation.

Speed Classification: The substitute part must be classified as a fast recovery diode with reverse recovery time (trr) within the fast recovery specification (≤ 500 ns for currents > 200 mA) to maintain switching performance in high-frequency rectification circuits.

Mounting and Packaging: The substitute part must utilize through-hole mounting in a TO-220-3 package configuration to ensure mechanical and thermal compatibility with existing PCB layouts and heatsinking arrangements.

Regulatory Compliance: The substitute part must maintain RoHS3 compliance and REACH unaffected status to satisfy procurement and environmental requirements.

The SBR10150CT from Diodes Incorporated is identified as a substitute part. However, this part is configured as a diode array with 1 pair common cathode topology and a per-diode current rating of 5 A, which is below the 8 A requirement of the SF803G C0G. This configuration difference and reduced current capacity require careful circuit-level evaluation before substitution.

Parameter Comparison

Engineering Selection Recommendations

Primary Consideration - Current Rating Mismatch: The SBR10150CT is rated for 5 A per diode, which is 37.5% below the 8 A specification of the SF803G C0G. This reduced current capacity directly impacts thermal performance and maximum load handling capability. Selection of the SBR10150CT requires confirmation that circuit operating current does not exceed 5 A per diode element.

Voltage Rating Alignment: Both parts maintain identical 150 V DC reverse voltage ratings, ensuring equivalent protection against reverse bias conditions and transient overvoltages within the specified range.

Reverse Leakage Differential: The SBR10150CT exhibits 250 µA reverse leakage current compared to 10 µA for the SF803G C0G. This 25-fold increase in leakage current may impact circuit performance in applications sensitive to standby power consumption or precision analog circuits.

Diode Configuration Difference: The SBR10150CT is a diode array with common cathode configuration, whereas the SF803G C0G is a single diode element. This topological difference affects circuit integration and may require layout modifications if the common cathode connection is not utilized in the original design.

Regulatory and Compliance Status: Both parts maintain Active product status, RoHS3 compliance, and REACH unaffected designation, satisfying standard procurement and environmental requirements.

Thermal Performance: The SBR10150CT supports an extended operating temperature range (-65 to 150 °C) compared to the SF803G C0G (-55 to 150 °C), providing additional margin for high-temperature applications.

Frequently Asked Questions (FAQ)

Q: Can the SBR10150CT directly replace the SF803G C0G in all applications?

A: Direct replacement is not universally applicable. The SBR10150CT is rated for 5 A per diode versus the SF803G C0G's 8 A rating. Substitution is valid only in circuits where the actual operating current does not exceed 5 A. Additionally, the SBR10150CT's common cathode diode pair configuration differs from the single diode topology of the SF803G C0G, requiring circuit-level compatibility assessment.

Q: What is the significance of the reverse leakage current difference between these parts?

A: The SF803G C0G exhibits 10 µA reverse leakage at 150 V, while the SBR10150CT exhibits 250 µA. In applications with high impedance circuits, precision measurement circuits, or low standby power requirements, this 25-fold difference may produce measurable performance degradation. Standard rectification applications are typically unaffected by this difference.

Q: Are both parts suitable for high-frequency switching applications?

A: Yes. Both parts are classified as fast recovery diodes with reverse recovery times within the fast recovery specification (≤ 500 ns for currents > 200 mA). Both are suitable for switching power supplies and high-frequency rectification circuits operating within their respective current ratings.

Q: What packaging considerations apply to these parts?

A: Both parts utilize TO-220-3 through-hole packaging and are mechanically compatible with standard TO-220 heatsinks and PCB layouts. The physical footprint and thermal interface are identical, allowing direct mechanical substitution without layout modification.

Q: How do the forward voltage characteristics compare?

A: The SF803G C0G exhibits 975 mV forward voltage at 8 A, while the SBR10150CT exhibits 920 mV at 5 A. The SBR10150CT demonstrates lower forward voltage drop, which reduces power dissipation in the diode element. However, this comparison is made at different current levels and cannot be directly extrapolated to the 8 A operating point of the SF803G C0G.

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

A: No. Both parts maintain RoHS3 compliance, REACH unaffected status, and Active product designation. Both are suitable for applications with standard environmental and regulatory requirements.

Q: What is the impact of the extended temperature range of the SBR10150CT?

A: The SBR10150CT supports operation from -65 to 150 °C, compared to -55 to 150 °C for the SF803G C0G. This 10 °C extension at the lower temperature limit provides additional margin for cold-temperature applications and may be beneficial in aerospace, automotive, or industrial environments with extreme temperature exposure.