SFF2008G Equivalent & Substitute Parts

Part Overview

The SFF2008G is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 600 V DC reverse voltage and 20 A average rectified current. The device features fast recovery characteristics with a reverse recovery time of 35 ns and is packaged in a TO-220-3 through-hole configuration with an isolated tab. This component is classified as Active product status and is RoHS3 compliant.

Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when design flexibility is required within the specified electrical and mechanical parameters.

Substiute Parts

SFF2008G

Taiwan Semiconductor CorporationIn Stock: 2595SFF2008G Datasheet

Current PartRFQ

SDURF2060CT

SMC Diode SolutionsIn Stock: 2083SDURF2060CT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SFF2008G is determined by the following critical parameters:

Voltage Rating: The substitute part must maintain a DC reverse voltage rating of 600 V to ensure equivalent circuit protection and voltage withstand capability.

Package Configuration: The substitute part must use the TO-220-3 Full Pack with isolated tab to ensure mechanical and thermal compatibility with existing PCB layouts and heatsink mounting arrangements.

Mounting Type: Through-hole mounting is required to maintain compatibility with existing board designs.

Operating Temperature Range: The substitute part must support the -55°C to 150°C junction temperature range to ensure operation across the same environmental conditions.

Compliance Standards: RoHS3 compliance is required to meet regulatory requirements for hazardous substance restrictions.

The SDURF2060CT from SMC Diode Solutions meets these core substitution criteria. However, this part is configured as a diode array with 1 pair common cathode configuration, which differs from the single-diode configuration of the SFF2008G. This configuration difference affects application suitability and must be evaluated against specific circuit requirements.

Parameter Comparison

Engineering Selection Recommendations

SFF2008G Selection Criteria:

The SFF2008G is the primary choice for applications requiring a single general-purpose rectifier diode with 600 V rating and 20 A average rectified current. This part is Active product status with full RoHS3 compliance and REACH unaffected designation. The 35 ns reverse recovery time supports fast switching applications. Current inventory of 2520 pieces ensures availability for production requirements.

SDURF2060CT Selection Criteria:

The SDURF2060CT is suitable as a substitute when the application circuit topology accommodates a diode array configuration with common cathode connection. This part maintains equivalent voltage and temperature ratings with RoHS3 compliance. The 50 ns reverse recovery time is marginally longer than the primary part but remains within fast recovery classification. Current inventory of 2000 pieces supports alternative sourcing. REACH status is listed as affected, which may require additional compliance documentation in certain supply chain applications.

Substitution Applicability:

Direct substitution of SDURF2060CT for SFF2008G is limited to circuits specifically designed for diode array configurations. Single-diode circuit applications cannot use the SDURF2060CT without circuit redesign. The forward voltage difference of 0.5 V at 10 A (2.2 V versus 1.7 V) results in increased power dissipation and thermal load that must be evaluated for thermal management compatibility.

Frequently Asked Questions (FAQ)

Q: Can the SDURF2060CT directly replace the SFF2008G in any circuit?

A: No. The SDURF2060CT is a diode array with common cathode configuration, while the SFF2008G is a single diode. Direct replacement is only possible in circuits specifically designed for the array configuration. Single-diode applications require the SFF2008G or equivalent single-diode parts.

Q: What is the significance of the common cathode configuration in the SDURF2060CT?

A: The common cathode configuration means two diodes share a single cathode terminal. This configuration is used in specific circuit topologies such as bridge rectifiers or dual-diode applications. It is not interchangeable with single-diode applications.

Q: Are the voltage ratings identical between these parts?

A: Yes. Both parts are rated for 600 V DC reverse voltage and support the same -55°C to 150°C operating temperature range. Both are RoHS3 compliant.

Q: What is the impact of the 0.5 V forward voltage difference?

A: The SDURF2060CT has a maximum forward voltage of 2.2 V at 10 A compared to 1.7 V for the SFF2008G. This 0.5 V difference increases power dissipation in the diode, resulting in higher heat generation. Thermal management and power budget calculations must account for this difference.

Q: Is the 15 ns difference in reverse recovery time significant?

A: Both parts are classified as fast recovery diodes with recovery times well below 500 ns. The 35 ns (SFF2008G) versus 50 ns (SDURF2060CT) difference is minor for most applications but may affect switching performance in high-frequency circuits operating above 100 kHz.

Q: Are there compliance differences between these parts?

A: Both parts are RoHS3 compliant. The SDURF2060CT has REACH status listed as affected, while the SFF2008G is REACH unaffected. Applications subject to REACH regulations may require additional documentation for the SDURF2060CT.

Q: Can these parts be used interchangeably in PCB designs?

A: Both parts use identical TO-220-3 Full Pack with isolated tab packaging and through-hole mounting. PCB footprints and heatsink mounting are mechanically compatible. However, circuit topology compatibility must be verified based on single-diode versus diode-array requirements.