VS-MBR3045WTPBF Equivalent & Substitute Parts

Part Overview

The VS-MBR3045WTPBF is a Schottky diode array manufactured by Vishay General Semiconductor - Diodes Division. This component features a 1 Pair Common Cathode configuration rated for 45 V DC reverse voltage and 15 A average rectified current per diode. The device is packaged in TO-247-3 through-hole format and is classified as obsolete product status. Due to its obsolescence, equivalent and substitute parts from active product lines are necessary to maintain design continuity and ensure long-term component availability for new production and field replacements.

Key Parameters

Parameter	Value
Manufacturer Part Number	VS-MBR3045WTPBF
Manufacturer	Vishay General Semiconductor - Diodes Division
Category	Diodes, Rectifiers
Diode Configuration	1 Pair Common Cathode
Technology	Schottky
Voltage - DC Reverse (Vr) (Max)	45 V
Current - Average Rectified (Io) (per Diode)	15 A
Voltage - Forward (Vf) (Max) @ If	760 mV @ 30 A
Speed	Fast Recovery ≤ 500 ns, > 200 mA (Io)
Current - Reverse Leakage @ Vr	1 mA @ 45 V
Operating Temperature - Junction	-65°C ~ 150°C
Mounting Type	Through Hole
Package / Case	TO-247-3
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the VS-MBR3045WTPBF is determined by the following critical parameters:

Primary Substitution Criteria:

Diode Configuration: 1 Pair Common Cathode
Technology: Schottky
Voltage - DC Reverse (Vr) (Max): 45 V minimum
Current - Average Rectified (Io) (per Diode): 15 A minimum
Mounting Type: Through Hole
Package / Case: TO-247-3
Speed: Fast Recovery ≤ 500 ns, > 200 mA (Io)

Substitution Categories:

Category 1: Direct Equivalent (Identical Electrical and Mechanical Specifications)

VS-MBR3045WT-N3: Active product status, identical specifications, differs only in packaging (Tube vs. original packaging) and base product number designation.

Category 2: Functional Equivalents (Same Voltage Rating, Higher Current Capability)

STPS3045CW: 45 V, 15 A, identical current rating, lower forward voltage (570 mV @ 15 A vs. 760 mV @ 30 A), higher maximum junction temperature (200°C).
STPS30L45CW: 45 V, 15 A, identical current rating, lower forward voltage (550 mV @ 15 A), higher reverse leakage (400 µA @ 45 V).
STPS4045CW: 45 V, 20 A, higher current capability, forward voltage 760 mV @ 20 A.
STPS40L45CW: 45 V, 20 A, higher current capability, lower forward voltage (530 mV @ 20 A).
STPS6045CW: 45 V, 30 A, higher current capability, forward voltage 630 mV @ 30 A.
STPS60L45CW: 45 V, 30 A, higher current capability, lower forward voltage (550 mV @ 30 A).
STPS61L45CW: 45 V, 30 A, higher current capability, forward voltage 560 mV @ 30 A.

Category 3: Partial Equivalents (Lower Voltage Rating, Higher Current Capability)

MBR3035PT: 35 V (lower than 45 V), 30 A (higher than 15 A), suitable only for applications with maximum operating voltage of 35 V or less.

All substitute parts maintain Schottky technology, TO-247-3 package format, through-hole mounting, fast recovery speed characteristics, and ROHS3 compliance.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io (per Diode)	Vf (Max) @ If	Reverse Leakage @ Vr	Tj (Max)	Product Status
VS-MBR3045WTPBF	Vishay	45 V	15 A	760 mV @ 30 A	1 mA @ 45 V	150°C	Obsolete
VS-MBR3045WT-N3	Vishay	45 V	15 A	760 mV @ 30 A	1 mA @ 45 V	Not specified	Active
STPS3045CW	STMicroelectronics	45 V	15 A	570 mV @ 15 A	200 µA @ 45 V	200°C	Active
STPS30L45CW	STMicroelectronics	45 V	15 A	550 mV @ 15 A	400 µA @ 45 V	150°C	Active
STPS4045CW	STMicroelectronics	45 V	20 A	760 mV @ 20 A	200 µA @ 45 V	175°C	Active
STPS40L45CW	STMicroelectronics	45 V	20 A	530 mV @ 20 A	600 µA @ 45 V	150°C	Active
STPS6045CW	STMicroelectronics	45 V	30 A	630 mV @ 30 A	500 µA @ 45 V	175°C	Active
STPS60L45CW	STMicroelectronics	45 V	30 A	550 mV @ 30 A	1.5 mA @ 45 V	150°C	Active
STPS61L45CW	STMicroelectronics	45 V	30 A	560 mV @ 30 A	1.5 mA @ 45 V	150°C	Active
MBR3035PT	Solid State Inc.	35 V	30 A	Not specified	Not specified	Not specified	Active

Engineering Selection Recommendations

Primary Recommendation: VS-MBR3045WT-N3

The VS-MBR3045WT-N3 is the preferred direct substitute for the obsolete VS-MBR3045WTPBF. This part is manufactured by the same supplier (Vishay General Semiconductor - Diodes Division), maintains identical electrical specifications, and carries active product status. The component is ROHS3 compliant and REACH unaffected, ensuring regulatory compliance for current and future applications. Packaging differs only in format (Tube), which does not affect electrical or mechanical compatibility.

Secondary Recommendations: STMicroelectronics STPS Series

For applications requiring active product availability with extended supply chain assurance, STMicroelectronics STPS series components provide functional equivalence with the following considerations:

STPS3045CW and STPS30L45CW: Maintain 45 V / 15 A specifications matching the original part. STPS30L45CW offers lower forward voltage (550 mV @ 15 A) compared to the original (760 mV @ 30 A), resulting in reduced power dissipation. Both are ROHS3 compliant and REACH unaffected.
STPS4045CW and STPS40L45CW: Provide 45 V rating with increased current capability (20 A). These parts are suitable for designs requiring higher current margins. STPS40L45CW offers superior forward voltage characteristics (530 mV @ 20 A).
STPS6045CW, STPS60L45CW, and STPS61L45CW: Deliver 45 V rating with 30 A current capability, providing maximum design margin for current-limited applications. All three maintain ROHS3 compliance and REACH unaffected status.

Partial Equivalent: MBR3035PT

The MBR3035PT from Solid State Inc. is suitable only for applications where the maximum operating voltage does not exceed 35 V. This part offers 30 A current capability but reduced voltage rating. Use is restricted to voltage-limited circuit designs.

Compliance and Regulatory Status

All recommended substitute parts maintain ROHS3 compliance and are REACH unaffected, ensuring compatibility with current environmental and regulatory requirements. All parts are classified as active products with established supply chains.

Frequently Asked Questions (FAQ)

Q1: Can VS-MBR3045WT-N3 be used as a direct replacement for VS-MBR3045WTPBF?

A: Yes. The VS-MBR3045WT-N3 is a direct electrical and mechanical equivalent. Both parts feature identical Schottky diode array configuration (1 Pair Common Cathode), 45 V reverse voltage rating, 15 A average rectified current per diode, TO-247-3 package, and fast recovery characteristics. The only difference is packaging format (Tube). No circuit modifications are required.

Q2: What is the difference between STPS3045CW and STPS30L45CW?

A: Both parts maintain 45 V / 15 A specifications. The primary differences are forward voltage and reverse leakage characteristics. STPS30L45CW exhibits lower forward voltage (550 mV @ 15 A vs. 570 mV @ 15 A) and higher reverse leakage (400 µA @ 45 V vs. 200 µA @ 45 V). STPS3045CW has a higher maximum junction temperature (200°C vs. 150°C). Selection depends on thermal management requirements and leakage current tolerance.

Q3: Why would I select a higher current-rated part like STPS6045CW (30 A) instead of STPS3045CW (15 A)?

A: Higher current-rated parts provide design margin for transient conditions, thermal stress reduction, and extended component life. If the application requires only 15 A nominal current, a 30 A rated part operates at lower stress levels, reducing junction temperature and improving reliability. However, this selection must be evaluated against cost and board space constraints.

Q4: Is MBR3035PT suitable as a substitute for VS-MBR3045WTPBF?

A: MBR3035PT is suitable only for applications where the maximum operating voltage does not exceed 35 V. The part offers higher current capability (30 A vs. 15 A) but reduced voltage rating. If the circuit design requires 45 V reverse voltage capability, MBR3035PT is not compatible. Verify maximum circuit voltage before selection.

Q5: Are all substitute parts ROHS3 compliant?

A: Yes. All recommended substitute parts (VS-MBR3045WT-N3, STPS series, and MBR3035PT) are ROHS3 compliant and REACH unaffected. This ensures compatibility with current environmental regulations and procurement requirements.

Q6: What is the significance of the "L" designation in STPS30L45CW and STPS40L45CW?

A: The "L" designation indicates a low forward voltage variant within the STMicroelectronics STPS series. These parts feature optimized junction design for reduced forward voltage drop compared to standard variants (STPS3045CW vs. STPS30L45CW, and STPS4045CW vs. STPS40L45CW). Selection depends on power dissipation requirements and thermal management strategy.

Q7: Can I use STPS4045CW (20 A) in a circuit designed for 15 A operation?

A: Yes. STPS4045CW is electrically and mechanically compatible with VS-MBR3045WTPBF. The higher current rating (20 A vs. 15 A) does not create incompatibility; the part simply operates at lower stress levels. Verify that forward voltage characteristics (760 mV @ 20 A) are acceptable for the circuit design.

Q8: What packaging formats are available for substitute parts?

A: All substitute parts maintain TO-247-3 through-hole package format, ensuring mechanical compatibility with the original VS-MBR3045WTPBF. Packaging variations (Tube, Bulk) refer to quantity and shipping format, not physical component dimensions. Verify supplier packaging availability for procurement requirements.

Q9: Are there temperature rating differences between substitute parts?

A: Yes. Maximum junction temperature ratings vary: VS-MBR3045WTPBF and STPS30L45CW/STPS40L45CW/STPS60L45CW/STPS61L45CW are rated to 150°C; STPS4045CW to 175°C; STPS6045CW to 175°C; STPS3045CW to 200°C. For high-temperature applications, STPS3045CW offers the highest thermal rating. For standard applications, 150°C rating is sufficient.

Q10: What is the inventory status of substitute parts?

A: VS-MBR3045WT-N3 has 1,964 pieces in stock. STMicroelectronics STPS series parts have inventory ranging from 1,359 to 2,600 pieces. MBR3035PT has 1,947 pieces available. All parts are classified as new original stock. Verify current inventory with supplier before final procurement.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message