Equivalent & Substitute Parts for VS-MBR3045CT-1PBF

Part Overview

The VS-MBR3045CT-1PBF is a Schottky diode array manufactured by Vishay General Semiconductor - Diodes Division. This component features a 1 Pair Common Cathode configuration with a maximum reverse voltage of 45 V and average rectified current of 15 A per diode. The part is packaged in TO-262-3 (I2PAK) with long leads for through-hole mounting applications.

The VS-MBR3045CT-1PBF is currently discontinued at DiGi Electronics. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for production and repair applications.

Key Parameters

Parameter	Value
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 ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	1 mA @ 45 V
Operating Temperature - Junction	-65°C ~ 150°C
Mounting Type	Through Hole
Package / Case	TO-262-3 Long Leads, I2PAK, TO-262AA
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the VS-MBR3045CT-1PBF 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
Current - Average Rectified (Io) (per Diode): 15 A (minimum requirement)
Package / Case: TO-262-3 Long Leads, I2PAK, TO-262AA
Mounting Type: Through Hole

Secondary Compatibility Factors:

Voltage - Forward (Vf) characteristics
Current - Reverse Leakage @ Vr
Operating Temperature - Junction range
RoHS and compliance certifications

Substitute parts are grouped based on their ability to meet or exceed the primary substitution criteria while maintaining electrical and mechanical compatibility with the original design.

Parameter Comparison

Parameter	VS-MBR3045CT-1PBF (Main)	VS-MBR3045CT-1-M3	MBRB3045CT-1G	STPS1545CR
Manufacturer	Vishay	Vishay	onsemi	STMicroelectronics
Diode Configuration	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode
Technology	Schottky	Schottky	Schottky	Schottky
Voltage - DC Reverse (Vr) (Max)	45 V	45 V	45 V	45 V
Current - Average Rectified (Io) (per Diode)	15 A	15 A	15 A	7.5 A
Voltage - Forward (Vf) (Max) @ If	760 mV @ 30 A	600 mV @ 15 A	620 mV @ 15 A	570 mV @ 7.5 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	1 mA @ 45 V	1 mA @ 45 V	200 µA @ 45 V	100 µA @ 45 V
Operating Temperature - Junction	-65°C ~ 150°C	-65°C ~ 150°C	-65°C ~ 175°C	Max 175°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	TO-262-3 Long Leads, I2PAK, TO-262AA	TO-262-3 Long Leads, I2PAK, TO-262AA	TO-262-3 Long Leads, I2PAK, TO-262AA	TO-262-3 Long Leads, I2PAK, TO-262AA
Product Status	Discontinued at DiGi Electronics	Active	Obsolete	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Direct Equivalent - Preferred Selection:

VS-MBR3045CT-1-M3 is the direct equivalent to VS-MBR3045CT-1PBF. Both parts are manufactured by Vishay General Semiconductor - Diodes Division and share identical electrical specifications and package configuration. The VS-MBR3045CT-1-M3 is currently in Active product status with 743 pieces in stock. This part maintains the same 15 A average rectified current rating and 45 V reverse voltage specification. The primary difference is packaging format (Tube vs. standard packaging). This part is ROHS3 compliant and carries MSL 1 rating.

Alternative Selection - Current Availability:

MBRB3045CT-1G, manufactured by onsemi, meets all primary substitution criteria with identical 15 A current rating and 45 V reverse voltage. This part is listed as Obsolete but has 1900 pieces in stock. The MBRB3045CT-1G features an extended operating temperature range (-65°C ~ 175°C) compared to the main part (-65°C ~ 150°C) and lower reverse leakage current (200 µA @ 45 V). ROHS3 compliance and MSL 1 rating are maintained.

Limited Current Rating Alternative:

STPS1545CR, manufactured by STMicroelectronics, is an Active product with 3300 pieces in stock. This part shares the same package, configuration, and 45 V reverse voltage rating. However, the average rectified current is rated at 7.5 A per diode, which is 50% of the main part specification. STPS1545CR is suitable only for applications where the 7.5 A current rating is sufficient. This part features lower forward voltage drop (570 mV @ 7.5 A) and lower reverse leakage current (100 µA @ 45 V). ROHS3 compliance and MSL 1 rating are maintained.

Frequently Asked Questions (FAQ)

Q: Can VS-MBR3045CT-1-M3 be used as a direct replacement for VS-MBR3045CT-1PBF?

A: Yes. VS-MBR3045CT-1-M3 is the direct equivalent. Both parts are manufactured by Vishay with identical electrical specifications, diode configuration, voltage rating, current rating, and package type. The only difference is the packaging format (Tube). Electrical and mechanical compatibility is complete.

Q: What is the difference between VS-MBR3045CT-1PBF and MBRB3045CT-1G?

A: Both parts meet the primary substitution criteria with 15 A current rating and 45 V reverse voltage in TO-262-3 I2PAK package. MBRB3045CT-1G is manufactured by onsemi and features an extended operating temperature range (-65°C ~ 175°C vs. -65°C ~ 150°C) and lower reverse leakage current (200 µA vs. 1 mA @ 45 V). MBRB3045CT-1G is listed as Obsolete.

Q: Can STPS1545CR replace VS-MBR3045CT-1PBF in all applications?

A: STPS1545CR is not a full equivalent. While it shares the same package, configuration, and 45 V reverse voltage rating, the average rectified current is 7.5 A per diode, which is 50% of the main part specification. STPS1545CR is suitable only for applications where the 7.5 A current rating meets design requirements.

Q: Are all substitute parts RoHS compliant?

A: Yes. VS-MBR3045CT-1-M3, MBRB3045CT-1G, and STPS1545CR are all ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Q: What is the significance of the TO-262-3 Long Leads package designation?

A: TO-262-3 Long Leads, also designated as I2PAK or TO-262AA, is a through-hole package with extended lead length for PCB mounting. All substitute parts use this identical package configuration, ensuring mechanical compatibility with existing PCB designs without layout modifications.

Q: Which substitute part has the best availability?

A: STPS1545CR has the highest inventory with 3300 pieces in stock and Active product status. However, this part has a reduced current rating of 7.5 A. For full 15 A current rating, VS-MBR3045CT-1-M3 (743 pieces, Active status) is the recommended choice.

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