MBRB2545CT Equivalent & Substitute Parts

Part Overview

The MBRB2545CT is a Schottky diode array manufactured by Vishay General Semiconductor - Diodes Division. This component features a 1 Pair Common Cathode configuration rated for 45V DC reverse voltage and 15A average rectified current per diode. The device is packaged in TO-263-3 (D2PAK) surface mount format with fast recovery characteristics suitable for switching applications.

The MBRB2545CT is classified as Obsolete. Equivalent and substitute parts are necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements. Active alternatives with identical or compatible electrical and mechanical specifications are available from multiple manufacturers.

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)	15	A
Voltage - Forward (Vf) (Max) @ If	820 mV @ 30 A	—
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Current - Reverse Leakage @ Vr	200	µA @ 45 V
Operating Temperature - Junction	-65 to 150	°C
Mounting Type	Surface Mount	—
Package / Case	TO-263-3, D2PAK (2 Leads + Tab), TO-263AB	—
RoHS Status	RoHS non-compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the MBRB2545CT are classified based on strict electrical and mechanical compatibility. The following parameters determine substitution eligibility:

Critical Parameters (Must Match):

Diode Configuration: 1 Pair Common Cathode
Technology: Schottky
Voltage - DC Reverse (Vr) (Max): 45 V
Current - Average Rectified (Io) (per Diode): 15 A (or higher)
Mounting Type: Surface Mount
Package / Case: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB or compatible variant

Allowable Variations:

Voltage - Forward (Vf): Variations within manufacturer specifications
Current - Reverse Leakage: Variations within manufacturer specifications
Operating Temperature - Junction: Extended ranges acceptable
Product Status: Active preferred over Obsolete
RoHS Compliance: ROHS3 Compliant preferred
Packaging Format: Tape & Reel (TR), Tube, or Bulk acceptable

Substitute parts are grouped into three categories: Parametric Equivalents (identical specifications, same manufacturer), Upgrades (enhanced specifications or active status), and Manufacturer Recommended alternatives (different manufacturers, equivalent performance).

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io (per Diode) [A]	Vf (Max) [mV]	Ir @ Vr [µA]	Tj (Max) [°C]	Package	Product Status	RoHS
MBRB2545CT	Vishay	45	15	820 @ 30A	200 @ 45V	150	TO-263AB	Obsolete	Non-compliant
VS-MBRB2545CTL-M3	Vishay	45	15	820 @ 30A	200 @ 45V	150	TO-263AB	Active	ROHS3
VS-MBRB2545CTR-M3	Vishay	45	15	820 @ 30A	200 @ 45V	150	TO-263AB	Active	ROHS3
MBRB2545CTT4G	onsemi	45	15	820 @ 30A	200 @ 45V	175	D2PAK	Active	ROHS3
SBRB2545CTG	onsemi	45	15	620 @ 15A	200 @ 45V	175	D2PAK	Obsolete	ROHS3
DSSK28-0045BS-TRL	IXYS	45	15	480 @ 15A	20 @ 45V	150	TO-263AA	Active	ROHS3
MBRB2545CT-TP	Micro Commercial Co	45	30	750 @ 15A	200 @ 45V	150	D2PAK	Active	—
STPS15L45CB	STMicroelectronics	45	7.5	520 @ 7.5A	1 @ 45V	150	DPAK	Active	ROHS3
STPS15L45CB-TR	STMicroelectronics	45	7.5	520 @ 7.5A	1 @ 45V	150	DPAK	Active	ROHS3
STPS2545CG-TR	STMicroelectronics	45	12.5	570 @ 12.5A	125 @ 45V	175	D2PAK	Active	ROHS3
STPS2545CGY-TR	STMicroelectronics	45	12.5	840 @ 25A	125 @ 45V	175	D2PAK	Active	ROHS3

Engineering Selection Recommendations

Direct Parametric Equivalents (Preferred for Drop-In Replacement):

VS-MBRB2545CTL-M3 and VS-MBRB2545CTR-M3 are direct parametric equivalents manufactured by Vishay. Both parts maintain identical electrical specifications to the MBRB2545CT while offering Active product status and ROHS3 compliance. These parts are supplied in Tape & Reel packaging and represent the lowest-risk substitution path. Current inventory levels support production requirements.

Active Upgrade Options:

MBRB2545CTT4G (onsemi) provides identical electrical performance with extended maximum junction temperature (175°C vs. 150°C) and Active product status. This part is supplied in Tape & Reel format with ROHS3 compliance and represents substantial inventory availability (53,514 pcs).

MBRB2545CT-TP (Micro Commercial Co) offers doubled current rating (30A vs. 15A per diode) while maintaining 45V reverse voltage specification. This part is suitable for applications requiring higher current capacity within the same package footprint.

Alternative Manufacturers:

DSSK28-0045BS-TRL (IXYS) maintains 45V/15A specifications with improved forward voltage characteristics (480 mV @ 15A) and significantly lower reverse leakage current (20 µA @ 45V). Package variant is TO-263AA. Active status and ROHS3 compliance confirmed.

Current-Reduced Alternatives:

STPS2545CG-TR and STPS2545CGY-TR (STMicroelectronics) provide 12.5A current rating in D2PAK package with 45V reverse voltage. These parts are suitable for applications where 15A rating exceeds requirements. Both are Active with ROHS3 compliance and extended temperature range (175°C max).

STPS15L45CB and STPS15L45CB-TR (STMicroelectronics) provide 7.5A current rating in DPAK package. These parts are suitable for lower-current applications and offer improved reverse leakage characteristics (1 µA @ 45V).

Compliance Considerations:

All recommended active substitutes carry ROHS3 compliance certification. The original MBRB2545CT is RoHS non-compliant; migration to compliant alternatives is recommended for new designs and ongoing production.

Frequently Asked Questions (FAQ)

Q: Can VS-MBRB2545CTL-M3 or VS-MBRB2545CTR-M3 be used as direct replacements for MBRB2545CT?

A: Yes. Both Vishay parts are parametric equivalents with identical electrical specifications (45V, 15A, Schottky, 1 Pair Common Cathode configuration). The primary differences are Active product status, ROHS3 compliance, and Tape & Reel packaging. Electrical performance and package footprint are identical.

Q: What is the difference between MBRB2545CTT4G and the original MBRB2545CT?

A: MBRB2545CTT4G is manufactured by onsemi and offers identical electrical specifications with extended maximum junction temperature (175°C vs. 150°C). It carries Active product status and ROHS3 compliance. The part is supplied in Tape & Reel format. All other parameters remain equivalent.

Q: Can MBRB2545CT-TP be used in place of MBRB2545CT?

A: MBRB2545CT-TP is electrically compatible but rated for 30A per diode versus 15A for the original part. This higher current rating does not prevent substitution in circuits designed for 15A operation. The part maintains 45V reverse voltage and identical package footprint. Use is appropriate when higher current capacity is beneficial or when supply of 15A-rated parts is constrained.

Q: Why do STPS2545CG-TR and STPS2545CGY-TR have lower current ratings (12.5A) than the original MBRB2545CT (15A)?

A: These STMicroelectronics parts are rated for 12.5A average rectified current per diode. They maintain 45V reverse voltage and D2PAK package compatibility. These parts are suitable for applications where 12.5A meets circuit requirements. They offer extended temperature range (175°C max) and improved reverse leakage characteristics (125 µA @ 45V).

Q: What is the difference between STPS15L45CB and STPS15L45CB-TR?

A: Both parts are identical electrically and mechanically. STPS15L45CB is supplied in Tube packaging; STPS15L45CB-TR is supplied in Cut Tape & Digi-Reel format. Selection depends on assembly process requirements. Both are Active with ROHS3 compliance. Note: These parts are rated for 7.5A per diode, not 15A.

Q: Is DSSK28-0045BS-TRL (IXYS) a suitable substitute?

A: Yes. DSSK28-0045BS-TRL maintains 45V reverse voltage and 15A current rating with 1 Pair Common Cathode configuration. The package is TO-263AA (mechanically compatible with TO-263AB). Forward voltage is lower (480 mV @ 15A), and reverse leakage is significantly lower (20 µA @ 45V). The part is Active with ROHS3 compliance.

Q: Should I migrate from MBRB2545CT to a ROHS3-compliant alternative?

A: Yes. The original MBRB2545CT is RoHS non-compliant. For new designs and ongoing production, migration to ROHS3-compliant alternatives (VS-MBRB2545CTL-M3, VS-MBRB2545CTR-M3, MBRB2545CTT4G, or DSSK28-0045BS-TRL) is recommended to ensure regulatory compliance and supply chain continuity.

Q: Can I use SBRB2545CTG as a substitute?

A: SBRB2545CTG is electrically compatible (45V, 15A, Schottky, 1 Pair Common Cathode) but is classified as Obsolete. While it carries ROHS3 compliance, its obsolete status makes it unsuitable for new designs. Active alternatives with identical specifications are available and should be prioritized.

Q: What packaging options are available for MBRB2545CT substitutes?

A: Substitute parts are available in multiple packaging formats: Tape & Reel (TR) for automated assembly, Tube for manual handling, Bulk for large-volume applications, and Cut Tape & Digi-Reel for mixed-volume production. Selection depends on assembly process and volume requirements. All formats maintain identical electrical and mechanical specifications.

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