MBRB3030CTL Equivalent & Substitute Parts

Part Overview

The MBRB3030CTL is a Schottky diode array manufactured by onsemi, configured as 1 pair common cathode with a maximum reverse voltage of 30 V and average rectified current of 15 A per diode. The device is packaged in TO-263-3 D2PAK surface mount configuration and belongs to the SWITCHMODE™ series.

This part is classified as obsolete. Identifying equivalent and substitute components is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this diode array configuration.

Key Parameters

Parameter	Value	Unit
Diode Configuration	1 Pair Common Cathode	—
Technology	Schottky	—
Voltage - DC Reverse (Vr) (Max)	30	V
Current - Average Rectified (Io) (per Diode)	15	A
Voltage - Forward (Vf) (Max) @ If	440 mV @ 15 A	—
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Current - Reverse Leakage @ Vr	2	mA @ 30 V
Operating Temperature - Junction	-55 to 125	°C
Mounting Type	Surface Mount	—
Package / Case	TO-263-3, D2PAK (2 Leads + Tab), TO-263AB	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the MBRB3030CTL is determined by the following critical parameters:

Mandatory Compatibility Criteria:

Diode configuration: 1 Pair Common Cathode
Technology: Schottky
Package / Case: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
Mounting Type: Surface Mount
Moisture Sensitivity Level: 1 (Unlimited)

Electrical Performance Criteria:

Voltage - DC Reverse (Vr) (Max): 30 V minimum
Current - Average Rectified (Io) (per Diode): 15 A minimum
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)

Substitute parts must meet or exceed the electrical specifications of the main part while maintaining identical package and configuration requirements. Parts are grouped based on their ability to fulfill these criteria within the same physical footprint and functional topology.

Parameter Comparison

Parameter	MBRB3030CTL (onsemi)	MBRB2530CT (SMC Diode Solutions)	STPS3030CG-TR (STMicroelectronics)	STPS30L30CG-TR (STMicroelectronics)	VS-25CTQ035S-M3 (Vishay)
Diode Configuration	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode
Technology	Schottky	Schottky	Schottky	Schottky	Schottky
Voltage - DC Reverse (Vr) (Max)	30 V	30 V	30 V	30 V	35 V
Current - Average Rectified (Io) (per Diode)	15 A	Not specified	15 A	15 A	15 A
Voltage - Forward (Vf) (Max) @ If	440 mV @ 15 A	820 mV @ 30 A	490 mV @ 15 A	460 mV @ 15 A	560 mV @ 15 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	2 mA @ 30 V	1 mA @ 30 V	1 mA @ 30 V	1.5 mA @ 60 V	1.75 mA @ 35 V
Operating Temperature - Junction	-55 to 125°C	-55 to 150°C	Max 150°C	Max 150°C	-55 to 150°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	TO-263-3, D2PAK	TO-263-3, D2PAK	TO-263-3, D2PAK	TO-263-3, D2PAK	TO-263-3, D2PAK
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

STPS30L30CG-TR (STMicroelectronics) and STPS3030CG-TR (STMicroelectronics) are the preferred substitutes for the MBRB3030CTL. Both parts maintain identical electrical specifications (30 V reverse voltage, 15 A average rectified current), identical package configuration (TO-263-3 D2PAK), and are classified as active products with ROHS3 compliance. The STPS30L30CG-TR offers superior forward voltage characteristics (460 mV @ 15 A) compared to the original part (440 mV @ 15 A) and provides extended maximum junction temperature rating (150°C vs. 125°C).

Secondary Substitute (Voltage Margin):

VS-25CTQ035S-M3 (Vishay General Semiconductor - Diodes Division) provides a 35 V reverse voltage rating, offering additional voltage margin over the 30 V specification of the original part. This part maintains 15 A average rectified current, identical package configuration, and active product status with ROHS3 compliance. The higher voltage rating accommodates applications requiring transient voltage protection.

Alternative Substitute (Current Specification Limitation):

MBRB2530CT (SMC Diode Solutions) maintains the 30 V reverse voltage and identical package configuration. However, the average rectified current per diode is not specified in the provided data. This part is active and ROHS3 compliant but should be evaluated for current capacity requirements before selection.

All substitute parts are active products with current manufacturing support and improved regulatory compliance compared to the obsolete MBRB3030CTL.

Frequently Asked Questions (FAQ)

Q: Can STPS30L30CG-TR directly replace MBRB3030CTL in existing designs?

A: Yes. STPS30L30CG-TR maintains identical electrical specifications (30 V, 15 A), identical package configuration (TO-263-3 D2PAK), and identical diode array topology (1 pair common cathode). No circuit modifications are required for direct substitution.

Q: What is the difference between STPS3030CG-TR and STPS30L30CG-TR?

A: Both parts share identical electrical specifications and package configuration. The primary difference is packaging format: STPS3030CG-TR is supplied in Tape & Reel (TR), while STPS30L30CG-TR is supplied in Cut Tape (CT) & Digi-Reel®. Electrical performance and physical footprint are equivalent.

Q: Why is VS-25CTQ035S-M3 listed as a substitute if it has 35 V rating instead of 30 V?

A: The 35 V reverse voltage rating of VS-25CTQ035S-M3 exceeds the 30 V requirement of the original part, providing additional voltage margin. This part maintains all other critical specifications (15 A current, Schottky technology, 1 pair common cathode configuration, TO-263-3 D2PAK package). Higher voltage ratings are compatible with 30 V applications.

Q: Is MBRB2530CT a suitable replacement?

A: MBRB2530CT maintains the 30 V reverse voltage and identical package configuration. However, the average rectified current per diode is not specified in available data. This creates uncertainty regarding current capacity. STPS30L30CG-TR or STPS3030CG-TR are preferred due to confirmed 15 A specifications.

Q: What is the significance of RoHS3 compliance for substitute selection?

A: The original MBRB3030CTL is RoHS non-compliant. All listed substitutes are ROHS3 compliant, meeting current environmental and regulatory requirements for new designs and manufacturing. This compliance status is relevant for applications subject to RoHS directives.

Q: Are all substitute parts available in the same packaging options?

A: Packaging formats vary among substitutes. STPS3030CG-TR and STPS30L30CG-TR are available in reel formats suitable for automated assembly. VS-25CTQ035S-M3 is supplied in tube packaging. MBRB2530CT is supplied in Tape & Reel (TR). Verify packaging compatibility with assembly equipment before final selection.

Q: What is the maximum junction temperature difference between the original part and substitutes?

A: The MBRB3030CTL operates to 125°C maximum junction temperature. STPS30L30CG-TR, STPS3030CG-TR, MBRB2530CT, and VS-25CTQ035S-M3 all operate to 150°C maximum junction temperature, providing 25°C additional thermal margin.

Q: Can forward voltage differences affect circuit performance?

A: Forward voltage specifications vary among substitutes (440 mV to 560 mV @ 15 A). In applications where forward voltage drop directly affects circuit operation, verify that the substitute part's forward voltage remains within acceptable design tolerances. STPS30L30CG-TR (460 mV) provides the closest match to the original specification (440 mV).

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