Equivalent & Substitute Parts for VS-MBR4045WTPBF Schottky Diode Array

Part Overview

The VS-MBR4045WTPBF is a Schottky diode array manufactured by Vishay General Semiconductor - Diodes Division, configured as 1 Pair Common Cathode with 45 V reverse voltage rating and 20 A average rectified current per diode. This component is classified as Obsolete, necessitating identification of active equivalent and substitute parts for new designs and ongoing production requirements. The part is housed in a TO-247-3 through-hole package and complies with ROHS3 and REACH standards.

Key Parameters

Parameter	Value	Unit
Diode Configuration	1 Pair Common Cathode	—
Technology	Schottky	—
Voltage - DC Reverse (Vr) (Max)	45	V
Current - Average Rectified (Io) (per Diode)	20	A
Voltage - Forward (Vf) (Max) @ If	590 mV @ 20 A	—
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Current - Reverse Leakage @ Vr	1.75	mA @ 45 V
Operating Temperature - Junction	-65 to 150	°C
Mounting Type	Through Hole	—
Package / Case	TO-247-3	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the VS-MBR4045WTPBF is determined by strict equivalence in the following electrical and mechanical parameters:

Primary Substitution Criteria:

Diode Configuration: 1 Pair Common Cathode (mandatory)
Technology: Schottky (mandatory)
Voltage - DC Reverse (Vr) (Max): 45 V (mandatory)
Package / Case: TO-247-3 (mandatory)
Mounting Type: Through Hole (mandatory)

Secondary Compatibility Parameters:

Current - Average Rectified (Io) (per Diode): Equal or greater than 20 A
Voltage - Forward (Vf) (Max) @ If: Within acceptable operating range
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
Operating Temperature - Junction: Minimum -55°C to maximum 150°C or higher
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts are grouped by current rating capacity: 15 A, 20 A, and 30 A variants. Parts with equal or higher current ratings are electrically compatible with the original 20 A specification.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io per Diode [A]	Vf (Max) [mV]	Reverse Leakage [µA/mA @ 45V]	Tj (Max) [°C]	Product Status	Inventory [Pcs]
VS-MBR4045WTPBF	Vishay	45	20	590 @ 20A	1.75 mA	150	Obsolete	987
VS-MBR4045WT-N3	Vishay	45	20	590 @ 20A	1.75 mA	150	Active	1670
DSA60C45HB	IXYS	45	30	770 @ 30A	450 µA	175	Active	707
STPS3045CW	STMicroelectronics	45	15	570 @ 15A	200 µA	200	Active	1359
STPS30L45CW	STMicroelectronics	45	15	550 @ 15A	400 µA	150	Active	2600
STPS4045CW	STMicroelectronics	45	20	760 @ 20A	200 µA	175	Active	1990
STPS40L45CW	STMicroelectronics	45	20	530 @ 20A	600 µA	150	Active	2300
STPS6045CW	STMicroelectronics	45	30	630 @ 30A	500 µA	175	Active	2200
STPS60L45CW	STMicroelectronics	45	30	550 @ 30A	1.5 mA	150	Active	1451
STPS61L45CW	STMicroelectronics	45	30	560 @ 30A	1.5 mA	150	Active	1410

Engineering Selection Recommendations

Direct Equivalent (Recommended Primary Substitute):

VS-MBR4045WT-N3 is the direct active equivalent to VS-MBR4045WTPBF. Both parts share identical electrical specifications: 45 V reverse voltage, 20 A average rectified current per diode, 590 mV forward voltage at 20 A, and 1.75 mA reverse leakage at 45 V. The primary difference is product status: VS-MBR4045WT-N3 is Active with 1670 units in stock, compared to the Obsolete status of the original part. Both comply with ROHS3, REACH Unaffected, and MSL 1 (Unlimited) standards. This part is suitable for direct replacement in all applications.

Higher Current Capacity Substitutes (20 A and Above):

STPS4045CW and STPS40L45CW (STMicroelectronics, 20 A rating) are electrically compatible substitutes with identical current capacity. STPS4045CW exhibits higher forward voltage (760 mV @ 20 A) and lower reverse leakage (200 µA), while STPS40L45CW provides lower forward voltage (530 mV @ 20 A) with higher reverse leakage (600 µA). Both are Active products with ROHS3 compliance.

DSA60C45HB (IXYS, 30 A rating), STPS6045CW, STPS60L45CW, and STPS61L45CW (STMicroelectronics, 30 A rating) provide increased current capacity beyond the original 20 A specification. These parts are suitable for applications requiring higher current handling. All are Active products with ROHS3 compliance and operating temperature ranges of 150°C to 175°C maximum.

Lower Current Capacity Substitutes (15 A Rating):

STPS3045CW and STPS30L45CW (STMicroelectronics, 15 A rating) have reduced current capacity relative to the original 20 A specification. These parts are suitable only for applications where the circuit design accommodates 15 A operation. Both are Active products with ROHS3 compliance.

Selection Basis:

All substitute parts maintain the mandatory parameters: 1 Pair Common Cathode configuration, Schottky technology, 45 V reverse voltage rating, TO-247-3 package, through-hole mounting, ROHS3 compliance, and MSL 1 (Unlimited). Product status is Active for all substitutes, ensuring ongoing availability and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can VS-MBR4045WT-N3 be used as a direct replacement for VS-MBR4045WTPBF?

A: Yes. VS-MBR4045WT-N3 is the direct active equivalent with identical electrical specifications and package configuration. The only difference is product status: VS-MBR4045WT-N3 is Active while VS-MBR4045WTPBF is Obsolete.

Q: What is the difference between 20 A and 30 A rated diode arrays in this family?

A: The 30 A variants (DSA60C45HB, STPS6045CW, STPS60L45CW, STPS61L45CW) have higher average rectified current capacity per diode compared to 20 A variants. All maintain the same 45 V reverse voltage rating and TO-247-3 package. The 30 A parts are suitable for applications requiring higher current handling and are electrically compatible with 20 A designs.

Q: Are the STMicroelectronics STPS series parts compatible with the Vishay MBR series?

A: Yes, within the specified electrical parameters. All STPS series parts listed (STPS3045CW, STPS30L45CW, STPS4045CW, STPS40L45CW, STPS6045CW, STPS60L45CW, STPS61L45CW) maintain the same diode configuration (1 Pair Common Cathode), Schottky technology, 45 V reverse voltage, and TO-247-3 package as the original Vishay part. Differences in forward voltage and reverse leakage characteristics must be evaluated for specific circuit requirements.

Q: What does the "L" designation in part numbers like STPS40L45CW indicate?

A: The "L" designation in STMicroelectronics part numbers indicates a low forward voltage variant. For example, STPS40L45CW has 530 mV forward voltage at 20 A compared to STPS4045CW at 760 mV at 20 A. Both maintain identical reverse voltage and current ratings.

Q: Can a 15 A rated part substitute for a 20 A application?

A: No. STPS3045CW and STPS30L45CW are rated for 15 A average rectified current per diode, below the original 20 A specification. These parts are suitable only for applications designed for 15 A operation.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 Compliant and REACH Unaffected, matching the compliance status of the original VS-MBR4045WTPBF.

Q: What is the significance of MSL 1 (Unlimited) rating?

A: MSL 1 (Unlimited) indicates the component has unlimited shelf life and does not require special moisture control during storage or handling. All parts in this comparison maintain MSL 1 rating.

Q: How do reverse leakage characteristics differ among substitutes?

A: Reverse leakage at 45 V varies across the substitute parts: VS-MBR4045WT-N3 and original part at 1.75 mA; STPS40L45CW at 600 µA; STPS6045CW at 500 µA; STPS3045CW at 200 µA; STPS4045CW at 200 µA; STPS30L45CW at 400 µA; STPS60L45CW and STPS61L45CW at 1.5 mA; DSA60C45HB at 450 µA. Lower reverse leakage reduces standby power dissipation in high-impedance applications.

Q: What is the maximum junction temperature range across all substitutes?

A: Maximum junction temperature ranges from 150°C to 200°C. STPS3045CW supports 200°C maximum, while most other parts support 150°C to 175°C. The original VS-MBR4045WTPBF and VS-MBR4045WT-N3 are rated to 150°C maximum.

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