MBRB2040CT-TP Equivalent & Substitute Parts

Part Overview

The MBRB2040CT-TP is a Schottky diode array manufactured by Micro Commercial Co, configured as 1 pair common cathode with a maximum reverse voltage rating of 40 V and average rectified current of 20 A per diode. The component is housed in a Surface Mount TO-263-3 D2PAK package with 2 leads plus tab configuration.

This part is classified as Obsolete. Identifying equivalent and substitute components is necessary to support ongoing design requirements, procurement continuity, and system maintenance where the original part is no longer available through standard distribution channels.

Key Parameters

Parameter	Value
Diode Configuration	1 Pair Common Cathode
Technology	Schottky
Voltage - DC Reverse (Vr) (Max)	40 V
Current - Average Rectified (Io) (per Diode)	20 A
Voltage - Forward (Vf) (Max) @ If	844 mV @ 20 A
Speed	Fast Recovery ≤ 500 ns, > 200 mA (Io)
Current - Reverse Leakage @ Vr	100 µA @ 40 V
Operating Temperature - Junction	-55°C ~ 150°C
Mounting Type	Surface Mount
Package / Case	TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Substitute Part Grouping Explanation

Substitution of the MBRB2040CT-TP is determined by the following critical parameters:

Electrical Compatibility Requirements:

Diode configuration must remain 1 pair common cathode
Technology must be Schottky
Reverse voltage rating must equal or exceed 40 V
Average rectified current must equal or exceed 20 A per diode
Fast recovery speed characteristic must be maintained (≤ 500 ns, > 200 mA)
Operating temperature range must encompass -55°C ~ 150°C

Mechanical Compatibility Requirements:

Mounting type must be Surface Mount
Package must be TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

The MBRB2045CT-TP satisfies all substitution criteria. It maintains identical diode configuration, Schottky technology, and package specifications while providing enhanced reverse voltage rating (45 V) and improved forward voltage characteristics at specified current levels.

Parameter Comparison

Parameter	MBRB2040CT-TP (Main Part)	MBRB2045CT-TP (Substitute)
Manufacturer	Micro Commercial Co	Micro Commercial Co
Category	Diodes, Rectifiers	Diodes, Rectifiers
Diode Configuration	1 Pair Common Cathode	1 Pair Common Cathode
Technology	Schottky	Schottky
Voltage - DC Reverse (Vr) (Max)	40 V	45 V
Current - Average Rectified (Io) (per Diode)	20 A	20 A
Voltage - Forward (Vf) (Max) @ If	844 mV @ 20 A	570 mV @ 10 A
Speed	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)
Current - Reverse Leakage @ Vr	100 µA @ 40 V	100 µA @ 45 V
Operating Temperature - Junction	-55°C ~ 150°C	-55°C ~ 150°C
Mounting Type	Surface Mount	Surface Mount
Package / Case	TO-263-3, D2PAK (2 Leads + Tab), TO-263AB	TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
Product Status	Obsolete	Active

Engineering Selection Recommendations

The MBRB2045CT-TP is the manufacturer-recommended substitute for the MBRB2040CT-TP. Selection of this substitute is supported by the following factors:

Product Status: The MBRB2045CT-TP carries Active product status, ensuring ongoing availability and manufacturing support, whereas the MBRB2040CT-TP is Obsolete.

Compliance and Certifications: Both parts maintain identical REACH status (REACH Unaffected), ECCN classification (EAR99), and HTSUS code (8541.10.0080), ensuring regulatory equivalence.

Electrical Performance: The MBRB2045CT-TP provides a higher reverse voltage rating (45 V versus 40 V), which is a direct upgrade for applications operating at or below 40 V. The substitute maintains the same average rectified current rating (20 A per diode) and identical fast recovery speed characteristics.

Package Compatibility: Both components utilize identical Surface Mount TO-263-3 D2PAK packaging, enabling direct physical replacement without PCB redesign.

Frequently Asked Questions (FAQ)

Q: Can the MBRB2045CT-TP be used as a direct replacement for the MBRB2040CT-TP?

A: Yes. The MBRB2045CT-TP is electrically and mechanically compatible with the MBRB2040CT-TP. Both components share identical diode configuration (1 pair common cathode), Schottky technology, current rating (20 A per diode), fast recovery speed characteristics, operating temperature range, and Surface Mount TO-263-3 D2PAK package. The substitute provides a higher reverse voltage rating (45 V), which is suitable for applications designed for 40 V operation.

Q: What are the key differences between these two parts?

A: The primary differences are reverse voltage rating (40 V for MBRB2040CT-TP versus 45 V for MBRB2045CT-TP), forward voltage characteristics at specified current levels, product status (Obsolete versus Active), and reverse leakage current measurement conditions. All other electrical and mechanical parameters remain identical.

Q: Does the higher voltage rating of the MBRB2045CT-TP affect circuit performance?

A: The higher reverse voltage rating does not negatively affect circuit performance in applications designed for 40 V operation. The substitute operates within the same temperature range, maintains identical current handling capability, and preserves fast recovery speed characteristics. The forward voltage characteristics differ at specified measurement points but remain within acceptable operating parameters for Schottky diode applications.

Q: Are there any package or pinout differences?

A: No. Both the MBRB2040CT-TP and MBRB2045CT-TP use identical Surface Mount TO-263-3 D2PAK packaging with 2 leads plus tab configuration. No PCB layout modifications are required for substitution.

Q: What is the availability status of each part?

A: The MBRB2040CT-TP is classified as Obsolete and has limited availability. The MBRB2045CT-TP is classified as Active and maintains current manufacturing and distribution support.

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