DSB60C45PB Equivalent & Substitute Parts

Part Overview

The DSB60C45PB is a Schottky diode array manufactured by IXYS, configured as a 1 Pair Common Cathode with a maximum reverse voltage of 45 V and average rectified current of 30 A per diode. The device is housed in a TO-220-3 through-hole package and is classified as Active product status. This component is suitable for applications requiring fast recovery rectification in power conversion circuits. Equivalent and substitute parts are identified based on matching electrical specifications and mechanical compatibility to support design flexibility and supply chain continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	DSB60C45PB
Manufacturer	IXYS
Category	Diodes, Rectifiers
Diode Configuration	1 Pair Common Cathode
Technology	Schottky
Voltage - DC Reverse (Vr) (Max)	45 V
Current - Average Rectified (Io) (per Diode)	30 A
Voltage - Forward (Vf) (Max) @ If	630 mV @ 30 A
Speed	Fast Recovery ≤ 500 ns, > 200 mA (Io)
Current - Reverse Leakage @ Vr	10 mA @ 45 V
Operating Temperature - Junction	-55°C ~ 150°C
Mounting Type	Through Hole
Package / Case	TO-220-3
Product Status	Active
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the DSB60C45PB are identified based on the following critical parameters that determine functional equivalence:

Primary Matching Criteria:

Diode Configuration: 1 Pair Common Cathode
Technology: Schottky or Super Barrier rectifier
Voltage - DC Reverse (Vr) (Max): 45 V or higher
Current - Average Rectified (Io) (per Diode): 30 A or higher
Mounting Type: Through Hole
Package / Case: TO-220-3 or compatible TO-220 variants
Speed: Fast Recovery ≤ 500 ns, > 200 mA (Io)

Substitutes are grouped into two categories:

Direct Equivalents (30 A Rating): Parts with identical 30 A current rating and 45 V voltage specification, providing pin-for-pin compatibility and electrical performance matching.

Functional Equivalents (Lower Current Ratings): Parts with 45 V voltage rating but lower current ratings (7.5 A, 10 A, or 15 A) are listed for reference in applications where current requirements are reduced. These parts maintain the same package, configuration, and voltage specification but operate within lower current envelopes.

Higher Voltage Alternatives: Parts rated at 50 V or higher provide additional voltage margin while maintaining compatible package and configuration specifications.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io (per Diode)	Vf (Max) @ If	Technology	Package	Product Status
DSB60C45PB	IXYS	45 V	30 A	630 mV @ 30 A	Schottky	TO-220-3	Active
MBR60L45CTG	onsemi	45 V	30 A	550 mV @ 30 A	Schottky	TO-220-3	Active
MBR2545CTG	onsemi	45 V	15 A	620 mV @ 15 A	Schottky	TO-220-3	Active
MBR3045CT-BP	Micro Commercial Co	45 V	15 A	700 mV @ 15 A	Schottky	TO-220-3	Active
MBR1545CTG	onsemi	45 V	7.5 A	840 mV @ 15 A	Schottky	TO-220-3	Active
MBR20L45CTG	onsemi	45 V	10 A	500 mV @ 10 A	Schottky	TO-220-3	Obsolete
MBR2550CT	Diodes Incorporated	50 V	15 A	750 mV @ 15 A	Schottky	TO-220-3	Obsolete
MBRP1545NTU	Fairchild Semiconductor	45 V	15 A	800 mV @ 15 A	Schottky	TO-220-3	Active
MBRP3045NTU	Fairchild Semiconductor	45 V	15 A	650 mV @ 15 A	Schottky	TO-220-3	Active
SBR2045CT	Diodes Incorporated	45 V	10 A	540 mV @ 10 A	Super Barrier	TO-220-3	Active
SBR2045CT-G	Diodes Incorporated	45 V	10 A	540 mV @ 10 A	Super Barrier	TO-220-3	Active

Engineering Selection Recommendations

Direct Equivalent Selection:

The MBR60L45CTG manufactured by onsemi is the primary direct equivalent to the DSB60C45PB. Both devices share identical voltage (45 V) and current (30 A) ratings, matching diode configuration (1 Pair Common Cathode), and TO-220-3 package specification. The MBR60L45CTG is classified as Active product status and is ROHS3 compliant. The forward voltage specification of 550 mV @ 30 A is lower than the DSB60C45PB at 630 mV @ 30 A, indicating improved thermal performance characteristics. This part is suitable for direct substitution in applications requiring full 30 A current capacity.

Functional Equivalent Selection for Reduced Current Applications:

For applications where current requirements do not exceed 15 A, the following Active status parts provide equivalent voltage specifications and package compatibility:

MBR2545CTG (onsemi): 45 V, 15 A, ROHS3 compliant, SWITCHMODE™ series
MBR3045CT-BP (Micro Commercial Co): 45 V, 15 A, ROHS3 compliant
MBRP3045NTU (Fairchild Semiconductor): 45 V, 15 A, Active status
MBRP1545NTU (Fairchild Semiconductor): 45 V, 15 A, Active status

All listed 15 A alternatives maintain the 45 V reverse voltage specification and TO-220-3 package configuration. Forward voltage characteristics vary between 620 mV and 800 mV @ 15 A, within acceptable design margins for most applications.

Compliance Considerations:

All recommended Active status substitutes are ROHS3 compliant and REACH unaffected, matching the regulatory compliance profile of the DSB60C45PB. Obsolete status parts (MBR20L45CTG, MBR2550CT) are not recommended for new designs despite electrical compatibility.

Super Barrier Technology Alternative:

The SBR2045CT and SBR2045CT-G (Diodes Incorporated) employ Super Barrier rectifier technology at 45 V, 10 A rating. These parts are suitable for applications with current requirements up to 10 A and offer forward voltage of 540 mV @ 10 A. Both are Active status and ROHS3 compliant.

Frequently Asked Questions (FAQ)

Q: Can the MBR60L45CTG be used as a direct replacement for the DSB60C45PB?

A: Yes. The MBR60L45CTG is a direct equivalent. Both devices have identical 45 V reverse voltage rating, 30 A average rectified current per diode, 1 Pair Common Cathode configuration, and TO-220-3 package. The MBR60L45CTG is Active status and ROHS3 compliant. The lower forward voltage (550 mV vs. 630 mV @ 30 A) represents improved performance.

Q: What is the difference between Schottky and Super Barrier rectifier technology in these parts?

A: Both technologies are fast recovery rectifiers suitable for the same voltage and package specifications. The provided data indicates Super Barrier devices (SBR2045CT, SBR2045CT-G) operate at lower current ratings (10 A) compared to the Schottky devices in this comparison. Technology selection depends on application-specific thermal and efficiency requirements.

Q: Can I use a 15 A rated part in place of the 30 A DSB60C45PB?

A: A 15 A rated part is suitable only if the application current requirement does not exceed 15 A per diode. The DSB60C45PB is rated for 30 A operation. Using a lower-rated device in a 30 A application will result in thermal stress and potential device failure. Verify actual circuit current requirements before substitution.

Q: Are there any package compatibility issues between TO-220-3 variants?

A: All listed substitute parts use TO-220-3 or compatible TO-220 package specifications. The DSB60C45PB uses TO-220-3 supplier device package. Substitute parts from onsemi (MBR60L45CTG, MBR2545CTG, MBR1545CTG, MBR20L45CTG) specify TO-220 supplier device package, which is mechanically and electrically compatible with TO-220-3. The MBR3045CT-BP uses TO-220AB variant, also compatible. Verify PCB footprint design accommodates the specific lead configuration of the selected substitute.

Q: Why are some parts listed as Obsolete?

A: MBR20L45CTG and MBR2550CT are classified as Obsolete product status. While these parts may be electrically compatible, they are not recommended for new designs due to discontinued manufacturing status and potential supply constraints. Active status parts are preferred for design continuity and long-term availability.

Q: What is the significance of the reverse leakage current specification?

A: Reverse leakage current (Ir) indicates the small current flowing through the diode when reverse biased. The DSB60C45PB specifies 10 mA @ 45 V. Substitute parts show variation in this parameter (ranging from 1 mA to 500 µA @ 45 V). Lower leakage current generally indicates better device quality and lower power dissipation in reverse bias conditions. This parameter should be evaluated for applications sensitive to standby power consumption.

Q: Are all listed substitutes ROHS3 compliant?

A: All Active status substitute parts listed are ROHS3 compliant, matching the DSB60C45PB compliance profile. Obsolete status parts (MBR20L45CTG, MBR2550CT) are also ROHS3 compliant. REACH status is Unaffected for all Active parts, indicating no regulatory restrictions on use.

Q: What is the operating temperature range consideration for substitution?

A: The DSB60C45PB operates from -55°C to 150°C junction temperature. Several substitute parts (MBR60L45CTG, MBR2545CTG, MBR1545CTG) extend the upper operating temperature to 175°C and lower temperature to -65°C. These extended ranges provide additional thermal margin in demanding applications. Parts with identical -55°C to 150°C range (MBR20L45CTG, MBR3045CT-BP) are directly compatible with the original specification.

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