FSV15120V Equivalent & Substitute Parts

Part Overview

The FSV15120V is a Schottky rectifier diode manufactured by onsemi, rated for 120 V DC reverse voltage and 15 A average rectified current in a Surface Mount TO-277-3 package. This component is classified as "Not For New Designs," indicating it has reached end-of-life status. Identification of equivalent and substitute parts is necessary for ongoing maintenance, repair, and legacy system support where the original component is no longer available or procurement is limited.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	120 V
Current - Average Rectified (Io)	15 A
Voltage - Forward (Vf) (Max) @ If	790 mV @ 15 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	35 µA @ 120 V
Mounting Type	Surface Mount
Package / Case	TO-277, 3-PowerDFN
Operating Temperature - Junction	-55°C ~ 150°C
Technology	Schottky
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the FSV15120V is determined by the following critical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 120 V minimum
Current - Average Rectified (Io): 15 A minimum
Technology: Schottky
Mounting Type: Surface Mount
Package / Case: TO-277 family variants

Secondary Compatibility Factors:

Forward voltage drop (Vf) at rated current
Reverse leakage current characteristics
Operating temperature range
Fast recovery speed classification

Substitute parts are grouped into two categories:

Category 1 - Parametric Equivalents: Parts with identical or near-identical electrical specifications to the FSV15120V, including 120 V reverse voltage rating, 15 A current rating, and matching forward voltage characteristics. These parts are direct functional replacements.

Category 2 - Voltage-Rated Alternatives: Parts with higher voltage ratings (150 V) that maintain the 15 A current rating and fast recovery characteristics. These parts provide enhanced voltage margin and are electrically compatible in applications where the FSV15120V operates below its maximum voltage specification.

Parameter Comparison

Parameter	FSV15120V (onsemi)	SVT15120UB_R2_00001 (Panjit)	SVT15120U_R1_00001 (Panjit)	V15P12-M3/H (Vishay)	MBR15U150-TP (Micro Commercial Co)
Voltage - DC Reverse (Vr) (Max)	120 V	120 V	120 V	120 V	150 V
Current - Average Rectified (Io)	15 A	15 A	15 A	15 A	15 A
Voltage - Forward (Vf) (Max) @ If	790 mV @ 15 A	790 mV @ 15 A	790 mV @ 15 A	810 mV @ 15 A	840 mV @ 15 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	35 µA @ 120 V	35 µA @ 120 V	35 µA @ 120 V	1 mA @ 120 V	100 µA @ 150 V
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	TO-277, 3-PowerDFN	TO-277, 3-PowerDFN	TO-277, 3-PowerDFN	TO-277, 3-PowerDFN	TO-277, 3-PowerDFN
Operating Temperature - Junction	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C	-40°C ~ 150°C	-55°C ~ 150°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Not For New Designs	Active	Active	Active	Active

Engineering Selection Recommendations

Recommended Primary Substitutes:

The SVT15120UB_R2_00001 and SVT15120U_R1_00001 (Panjit International Inc.) are the preferred substitutes for the FSV15120V. Both parts provide identical electrical specifications including 120 V reverse voltage, 15 A current rating, 790 mV forward voltage drop, and 35 µA reverse leakage current. These parts maintain the full operating temperature range of -55°C to 150°C and are ROHS3 compliant. The SVT15120UB_R2_00001 is available in TO-277B package variant with 5773 units in stock, while the SVT15120U_R1_00001 is available in standard TO-277 package with 886 units in stock.

Secondary Substitute Option:

The V15P12-M3/H (Vishay General Semiconductor - Diodes Division) is an active product substitute with matching 120 V reverse voltage and 15 A current rating. This part features a slightly higher forward voltage drop of 810 mV at 15 A and higher reverse leakage current of 1 mA at 120 V. The operating temperature range is -40°C to 150°C, which is narrower at the lower end compared to the FSV15120V. This part is available in TO-277A (SMPC) package variant with 5188 units in stock and is ROHS3 compliant.

Higher Voltage Alternative:

The MBR15U150-TP (Micro Commercial Co) provides a 150 V reverse voltage rating with the same 15 A current capacity. This part is suitable for applications where additional voltage margin is required. The forward voltage drop is 840 mV at 15 A, and reverse leakage is 100 µA at 150 V. This part is available in TO-277 package with 4224 units in stock and is ROHS3 compliant.

All substitute parts are Surface Mount devices in TO-277 family packages with identical 3-PowerDFN footprints, supporting direct board-level replacement. All substitutes maintain ROHS3 compliance and are classified as active products with current manufacturing status.

Frequently Asked Questions (FAQ)

Q: Can the SVT15120UB_R2_00001 directly replace the FSV15120V on the PCB?

A: Yes. Both parts are Surface Mount devices in TO-277 family packages with identical 3-PowerDFN footprints. The SVT15120UB_R2_00001 uses the TO-277B variant, which is mechanically and electrically compatible with the original TO-277-3 package. Electrical specifications are identical, including 120 V reverse voltage, 15 A current rating, and 790 mV forward voltage drop.

Q: What is the difference between the SVT15120UB_R2_00001 and SVT15120U_R1_00001?

A: Both parts are manufactured by Panjit International Inc. and provide identical electrical specifications. The primary difference is the package variant: SVT15120UB_R2_00001 uses TO-277B, while SVT15120U_R1_00001 uses standard TO-277. Both are mechanically compatible with the original FSV15120V footprint. The SVT15120UB_R2_00001 has higher inventory availability (5773 units versus 886 units).

Q: Why does the V15P12-M3/H have a higher forward voltage drop (810 mV) compared to the FSV15120V (790 mV)?

A: Forward voltage drop variations of 20 mV between Schottky diodes from different manufacturers are within normal manufacturing tolerances and material science differences. The V15P12-M3/H remains functionally compatible for the FSV15120V application. The higher forward voltage drop results in slightly increased power dissipation, which should be evaluated in thermal-sensitive applications.

Q: Is the MBR15U150-TP suitable as a substitute if my application operates at 120 V?

A: Yes. The MBR15U150-TP is rated for 150 V reverse voltage, which exceeds the 120 V requirement of the FSV15120V. This part provides additional voltage margin and is electrically compatible. The 15 A current rating matches the original specification. The higher forward voltage drop (840 mV) and reverse leakage current (100 µA) should be considered in power budget calculations.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed—SVT15120UB_R2_00001, SVT15120U_R1_00001, V15P12-M3/H, and MBR15U150-TP—are ROHS3 compliant. All parts also maintain REACH Unaffected status and EAR99 export classification, matching the compliance profile of the original FSV15120V.

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

A: The FSV15120V, SVT15120UB_R2_00001, SVT15120U_R1_00001, and MBR15U150-TP all support -55°C minimum junction temperature. The V15P12-M3/H has a minimum operating temperature of -40°C, which is 15°C higher. For applications requiring operation below -40°C, the Panjit or Micro Commercial Co alternatives are required.

Q: Can I use the higher voltage MBR15U150-TP in place of the 120 V FSV15120V without circuit modifications?

A: Yes. The MBR15U150-TP is a direct electrical substitute for applications operating at or below 120 V. No circuit modifications are required. The higher voltage rating provides design margin. The increased forward voltage drop (840 mV versus 790 mV) results in approximately 0.75 W additional power dissipation at 15 A, which should be verified against thermal design limits.

Q: What is the inventory status of substitute parts?

A: SVT15120UB_R2_00001 has 5773 units in stock, SVT15120U_R1_00001 has 886 units, V15P12-M3/H has 5188 units, and MBR15U150-TP has 4224 units. All substitutes are classified as active products with current manufacturing availability.

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