MBRB3030CTLG Equivalent & Substitute Parts

Part Overview

The MBRB3030CTLG is a Schottky diode array manufactured by onsemi, configured as 1 pair common cathode with 30 V reverse voltage rating and 15 A average rectified current 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. Substitute parts are necessary to maintain design continuity and ensure ongoing component availability for new production and field replacements.

Key Parameters

Parameter	Value
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°C ~ 125°C
Mounting Type	Surface Mount
Package / Case	TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the MBRB3030CTLG is determined by the following critical parameters:

Primary Substitution Criteria:

Diode configuration: 1 Pair Common Cathode
Technology: Schottky
Package / Case: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
Voltage - DC Reverse (Vr) (Max): 30 V minimum
Current - Average Rectified (Io) (per Diode): 15 A minimum
Mounting Type: Surface Mount

Acceptable Parameter Variations:

Voltage - Forward (Vf) (Max) @ If: Higher values acceptable within thermal design limits
Current - Reverse Leakage @ Vr: Lower values acceptable
Operating Temperature - Junction (Max): Higher maximum temperature acceptable
Current - Average Rectified (Io) (per Diode): Higher ratings acceptable

Substitute parts must maintain identical diode configuration, technology, and package specifications. Reverse voltage and forward current ratings must meet or exceed the original part specifications.

Parameter Comparison

Parameter	MBRB3030CTLG (onsemi)	STPS3030CG-TR (STMicroelectronics)	STPS30L30CG-TR (STMicroelectronics)	STPS41L30CG-TR (STMicroelectronics)	VS-25CTQ035S-M3 (Vishay)
Manufacturer	onsemi	STMicroelectronics	STMicroelectronics	STMicroelectronics	Vishay General Semiconductor - Diodes Division
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	15 A	15 A	20 A	15 A
Voltage - Forward (Vf) (Max) @ If	440 mV @ 15 A	490 mV @ 15 A	460 mV @ 15 A	480 mV @ 20 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	1.5 mA @ 60 V	1.5 mA @ 30 V	1.75 mA @ 35 V
Operating Temperature - Junction	-55°C ~ 125°C	150°C (Max)	150°C (Max)	150°C (Max)	-55°C ~ 150°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	TO-263-3, D2PAK (2 Leads + Tab), TO-263AB	TO-263-3, D2PAK (2 Leads + Tab), TO-263AB	TO-263-3, D2PAK (2 Leads + Tab), TO-263AB	TO-263-3, D2PAK (2 Leads + Tab), TO-263AB	TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

All substitute parts listed are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, matching the original MBRB3030CTLG specifications. All substitute parts are classified as active products, ensuring long-term availability and supply chain continuity.

STPS3030CG-TR (STMicroelectronics): Direct electrical equivalent with identical voltage and current ratings. Operating temperature maximum of 150°C exceeds the original part specification. Forward voltage of 490 mV at 15 A is within acceptable operating parameters. Packaged in Tape & Reel format with 1594 units in stock.

STPS30L30CG-TR (STMicroelectronics): Meets all electrical specifications with forward voltage of 460 mV at 15 A, which is lower than the original part. Operating temperature maximum of 150°C exceeds original specification. Packaged in Cut Tape & Digi-Reel® format with 4200 units in stock.

STPS41L30CG-TR (STMicroelectronics): Provides higher current rating of 20 A per diode, exceeding the 15 A requirement. Maintains 30 V reverse voltage specification. Forward voltage of 480 mV at 20 A is acceptable. Operating temperature maximum of 150°C exceeds original specification. Packaged in Cut Tape & Digi-Reel® format with 1359 units in stock.

VS-25CTQ035S-M3 (Vishay): Provides higher reverse voltage rating of 35 V, exceeding the 30 V requirement. Maintains 15 A current rating. Forward voltage of 560 mV at 15 A is higher than the original part. Operating temperature range of -55°C ~ 150°C matches the original part's lower temperature limit and exceeds the upper limit. Packaged in Tube format with 763 units in stock.

Frequently Asked Questions (FAQ)

Q: Can STPS3030CG-TR be used as a direct replacement for MBRB3030CTLG?

A: Yes. STPS3030CG-TR maintains identical voltage (30 V), current (15 A), configuration (1 pair common cathode), technology (Schottky), and package (TO-263-3 D2PAK) specifications. The higher maximum operating temperature of 150°C is an improvement over the original 125°C specification.

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

A: Both parts share identical electrical ratings of 30 V and 15 A. STPS30L30CG-TR features a lower forward voltage of 460 mV at 15 A compared to STPS3030CG-TR at 490 mV. Packaging differs: STPS3030CG-TR is supplied in Tape & Reel format, while STPS30L30CG-TR is supplied in Cut Tape & Digi-Reel® format.

Q: Why would STPS41L30CG-TR be selected over other substitutes?

A: STPS41L30CG-TR provides a higher current rating of 20 A per diode, offering additional design margin for applications requiring higher current capacity while maintaining the 30 V reverse voltage specification. This part is suitable for designs that may require future current upgrades.

Q: Is VS-25CTQ035S-M3 compatible with the original MBRB3030CTLG?

A: VS-25CTQ035S-M3 is compatible from a package and configuration standpoint. The 35 V reverse voltage rating exceeds the 30 V requirement, providing additional voltage margin. However, the forward voltage of 560 mV at 15 A is higher than the original 440 mV specification, which may impact thermal performance in high-current applications.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts listed are ROHS3 compliant and carry identical MSL 1 (Unlimited) moisture sensitivity ratings as the original MBRB3030CTLG.

Q: What packaging options are available for substitutes?

A: STPS3030CG-TR is supplied in Tape & Reel format. STPS30L30CG-TR and STPS41L30CG-TR are supplied in Cut Tape & Digi-Reel® format. VS-25CTQ035S-M3 is supplied in Tube format. All parts use identical TO-263-3 D2PAK surface mount package.

Q: Can these parts be used interchangeably on the same PCB?

A: Yes. All substitute parts use identical TO-263-3 D2PAK surface mount package with the same pinout and footprint, allowing direct PCB-level substitution without layout modifications.

Q: Which substitute offers the best forward voltage performance?

A: STPS30L30CG-TR offers the lowest forward voltage at 460 mV at 15 A, followed by STPS41L30CG-TR at 480 mV at 20 A. The original MBRB3030CTLG specified 440 mV at 15 A. Lower forward voltage reduces power dissipation in high-current applications.

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