VF30120C-E3/4W Equivalent & Substitute Parts

Part Overview

The VF30120C-E3/4W is a Schottky diode array manufactured by Vishay General Semiconductor - Diodes Division. This component features a 1 Pair Common Cathode configuration rated for 120 V DC reverse voltage with 15 A average rectified current per diode. The device is housed in a TO-220-3 Full Pack with isolated tab through-hole package and is part of the TMBS® series. The product maintains Active status with full RoHS3 compliance and unlimited moisture sensitivity rating. Equivalent and substitute parts are identified to support design flexibility, inventory management, and supply chain continuity for applications requiring compatible diode array functionality.

Substiute Parts

VF30120C-E3/4W

Vishay General Semiconductor - Diodes DivisionIn Stock: 5157VF30120C-E3/4W Datasheet

Current PartRFQ

SBR30A120CTFP

Diodes IncorporatedIn Stock: 2869SBR30A120CTFP Datasheet

MFR RecommendedRFQ

SDT20120CTFP

Diodes IncorporatedIn Stock: 798SDT20120CTFP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the VF30120C-E3/4W is determined by strict alignment with the following critical parameters:

Primary Substitution Criteria:

• Diode Configuration: 1 Pair Common Cathode
• Voltage - DC Reverse (Vr) (Max): 120 V
• Mounting Type: Through Hole
• Package / Case: TO-220-3 Full Pack, Isolated Tab
• Current - Average Rectified (Io) (per Diode): 15 A or greater
• Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
• RoHS3 Compliance: Required

Secondary Compatibility Parameters:

• Operating Temperature Range: Must encompass or exceed the application requirements
• Voltage - Forward (Vf): Lower values indicate improved efficiency
• Current - Reverse Leakage: Lower values indicate superior performance

The identified substitute parts meet the primary substitution criteria. Variations in secondary parameters reflect different semiconductor technologies (Schottky versus Super Barrier) and manufacturer specifications, which remain within acceptable operating boundaries for equivalent circuit functionality.

Parameter Comparison

Engineering Selection Recommendations

SBR30A120CTFP (Diodes Incorporated) - Primary Substitute

The SBR30A120CTFP is a direct functional equivalent to the VF30120C-E3/4W. Both components share identical voltage ratings (120 V), current ratings (15 A per diode), package configuration (TO-220-3 Full Pack, Isolated Tab), and fast recovery speed specifications. The SBR30A120CTFP employs Super Barrier technology, which delivers superior performance characteristics including lower forward voltage drop (830 mV versus 970 mV at 15 A) and significantly reduced reverse leakage current (100 µA versus 800 µA at 120 V). The extended operating temperature range (-65°C to 175°C) provides additional thermal margin. Both devices maintain Active product status and full RoHS3 compliance. Pin-for-pin compatibility and identical package geometry enable direct substitution without circuit modification.

SDT20120CTFP (Diodes Incorporated) - Conditional Substitute

The SDT20120CTFP is a Schottky diode array suitable for applications where the current requirement does not exceed 10 A per diode. This component maintains the same 120 V reverse voltage rating, TO-220-3 Full Pack isolated tab package, and fast recovery speed as the VF30120C-E3/4W. The forward voltage drop (880 mV at 10 A) falls between the main part and the SBR30A120CTFP. Reverse leakage current is superior at 80 µA. The operating temperature range (-55°C to 150°C) matches the main part specification. This substitute is applicable only in designs where the maximum current per diode requirement is 10 A or less. All regulatory compliance requirements (RoHS3, REACH) are satisfied. Pin-for-pin compatibility is maintained.

Frequently Asked Questions (FAQ)

Q: Can the SBR30A120CTFP replace the VF30120C-E3/4W in all applications?

A: Yes. The SBR30A120CTFP meets or exceeds all critical electrical parameters of the VF30120C-E3/4W. Both components feature identical 120 V reverse voltage, 15 A current rating, fast recovery speed, and TO-220-3 Full Pack isolated tab package. The SBR30A120CTFP provides improved performance through lower forward voltage drop and reduced reverse leakage current. Pin-for-pin compatibility is maintained.

Q: Under what conditions is the SDT20120CTFP suitable as a substitute?

A: The SDT20120CTFP is suitable only when the application current requirement does not exceed 10 A per diode. The component shares the same 120 V reverse voltage rating, package configuration, and fast recovery speed. If the design requires the full 15 A capability of the VF30120C-E3/4W, the SDT20120CTFP is not appropriate.

Q: Are all substitute parts available in the same package?

A: Yes. All three components—VF30120C-E3/4W, SBR30A120CTFP, and SDT20120CTFP—are packaged in TO-220-3 Full Pack with isolated tab configuration. Through-hole mounting is identical across all parts. No PCB layout modifications are required for substitution.

Q: What is the difference between Schottky and Super Barrier technology in these diodes?

A: Both technologies are fast recovery diode types suitable for high-frequency switching applications. The VF30120C-E3/4W and SDT20120CTFP employ Schottky technology. The SBR30A120CTFP uses Super Barrier technology, which achieves lower forward voltage drop and reduced reverse leakage current while maintaining the same voltage and current ratings. The choice between technologies depends on application efficiency requirements and thermal management considerations.

Q: Do all substitute parts meet RoHS3 compliance?

A: Yes. The VF30120C-E3/4W, SBR30A120CTFP, and SDT20120CTFP are all RoHS3 compliant. All components are REACH unaffected. These regulatory certifications remain valid for direct substitution in applications requiring environmental compliance.

Q: What is the significance of the isolated tab in the TO-220-3 Full Pack package?

A: The isolated tab configuration electrically isolates the mounting tab from the diode circuit. This allows the component to be mounted directly to a heat sink without requiring an insulating washer or additional isolation hardware. All three substitute parts feature this isolated tab design, maintaining identical thermal management capabilities.

Q: How do the reverse leakage current specifications compare?

A: The VF30120C-E3/4W specifies 800 µA reverse leakage at 120 V. The SBR30A120CTFP specifies 100 µA, and the SDT20120CTFP specifies 80 µA. Lower reverse leakage current indicates superior diode quality and reduced power dissipation in reverse bias conditions. Both substitute parts demonstrate improved leakage characteristics.

Q: Are there any temperature range limitations when substituting parts?

A: The VF30120C-E3/4W operates from -40°C to 150°C. The SBR30A120CTFP extends this range to -65°C to 175°C, providing additional thermal margin. The SDT20120CTFP operates from -55°C to 150°C. For applications operating within the original -40°C to 150°C range, all substitutes are suitable. For applications requiring extended temperature operation, the SBR30A120CTFP is the optimal choice.