FSV12120V Equivalent & Substitute Parts

Part Overview

The FSV12120V is a Schottky rectifier diode manufactured by onsemi, rated for 120 V DC reverse voltage and 12 A average rectified current in a Surface Mount TO-277-3 package. This component is classified as Not For New Designs, indicating it has been superseded in onsemi's product portfolio. Equivalent and substitute parts are necessary for applications requiring continued supply, design flexibility, or alternative sourcing options while maintaining electrical and mechanical compatibility.

Substiute Parts

FSV12120V

onsemiIn Stock: 10123FSV12120V Datasheet

Current PartRFQ

V12P12-M3/86A

Vishay General Semiconductor - Diodes DivisionIn Stock: 15743V12P12-M3/86A Datasheet

SimilarRFQ

SVT12120UB_R2_00001

Panjit International Inc.In Stock: 10889SVT12120UB_R2_00001 Datasheet

Parametric EquivalentRFQ

SVT12120U_R1_00001

Panjit International Inc.In Stock: 827SVT12120U_R1_00001 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the FSV12120V is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Voltage - DC Reverse (Vr) (Max): 120 V
• Current - Average Rectified (Io): 12 A
• Technology: Schottky
• Speed: Fast Recovery ≤ 500ns, > 200mA (Io)

Mechanical Parameters:

• Mounting Type: Surface Mount
• Package / Case: TO-277, 3-PowerDFN (includes TO-277-3, TO-277A, TO-277B variants)

Compliance Parameters:

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

Substitute parts must match all electrical parameters and comply with the same regulatory standards. Package variants within the TO-277 family are mechanically compatible. Forward voltage (Vf) and reverse leakage current (Ir) variations within acceptable engineering tolerances do not preclude substitution when all primary parameters align.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Parametric Equivalents):

SVT12120UB_R2_00001 and SVT12120U_R1_00001 (both Panjit International Inc.) are parametric equivalents to the FSV12120V. These parts match all critical electrical specifications, maintain identical forward voltage characteristics (790 mV @ 12 A), and share the same reverse leakage current rating (25 µA @ 120 V). Both are classified as Active products with full ROHS3 compliance and MSL 1 rating. Operating temperature range is identical (-55°C ~ 150°C). These parts are suitable for direct substitution in applications currently using the FSV12120V.

Secondary Substitute (Functional Equivalent):

V12P12-M3/86A (Vishay General Semiconductor - Diodes Division) is a functional equivalent with matching voltage and current ratings. This part exhibits a slightly elevated forward voltage (800 mV @ 12 A versus 790 mV @ 12 A) and higher reverse leakage current (500 µA @ 120 V versus 25 µA @ 120 V). The operating temperature range is narrower (-40°C ~ 150°C versus -55°C ~ 150°C). This part is classified as Active and maintains full ROHS3 compliance. Selection of this substitute is appropriate when the elevated leakage current and reduced low-temperature operating range are acceptable for the application.

All substitute parts are Surface Mount devices in TO-277 package variants and maintain regulatory compliance equivalent to the original FSV12120V.

Frequently Asked Questions (FAQ)

Q: Can SVT12120UB_R2_00001 be used as a direct replacement for FSV12120V?

A: Yes. SVT12120UB_R2_00001 is a parametric equivalent with identical voltage rating (120 V), current rating (12 A), forward voltage (790 mV @ 12 A), reverse leakage current (25 µA @ 120 V), and operating temperature range (-55°C ~ 150°C). Both are Surface Mount Schottky diodes in TO-277 package variants with ROHS3 compliance.

Q: What is the difference between the three substitute parts?

A: SVT12120U_R1_00001 and SVT12120UB_R2_00001 are both Panjit parts with identical electrical specifications. The primary difference is the package variant designation (TO-277 versus TO-277B). V12P12-M3/86A (Vishay) differs in forward voltage (800 mV versus 790 mV), reverse leakage current (500 µA versus 25 µA), and minimum operating temperature (-40°C versus -55°C).

Q: Are TO-277-3, TO-277A, and TO-277B packages mechanically compatible?

A: All three package variants are within the TO-277 family and are classified as 3-PowerDFN. They are mechanically compatible for Surface Mount applications. Specific PCB footprint requirements should be verified against the component datasheet for the selected substitute.

Q: Why does the FSV12120V have a "Not For New Designs" status?

A: This status indicates the part has been superseded in onsemi's product portfolio. Active substitute parts from other manufacturers are available with equivalent or superior specifications. New designs should incorporate one of the Active substitute parts listed.

Q: Is the higher reverse leakage current of V12P12-M3/86A a concern?

A: The reverse leakage current of V12P12-M3/86A is 500 µA @ 120 V, compared to 25 µA @ 120 V for the FSV12120V and Panjit equivalents. This difference is application-dependent. Applications sensitive to leakage current should use SVT12120UB_R2_00001 or SVT12120U_R1_00001. Applications with higher leakage tolerance can use V12P12-M3/86A.

Q: What is the minimum operating temperature difference between substitutes?

A: FSV12120V, SVT12120UB_R2_00001, and SVT12120U_R1_00001 operate from -55°C to 150°C. V12P12-M3/86A operates from -40°C to 150°C. Applications requiring operation below -40°C must use one of the -55°C rated parts.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. FSV12120V, V12P12-M3/86A, SVT12120UB_R2_00001, and SVT12120U_R1_00001 are all ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.