MBRB1545CT-TP Equivalent & Substitute Parts

Part Overview

The MBRB1545CT-TP is a Schottky diode array manufactured by Micro Commercial Co, configured as 1 pair common cathode with a maximum reverse voltage of 45 V and average rectified current of 15 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. Identification of equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for new production runs and field replacements.

Key Parameters

Parameter	Value
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	840 mV @ 15 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	100 µA @ 45 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 MBRB1545CT-TP is determined by the following critical parameters:

Electrical Compatibility Requirements:

Diode configuration must remain 1 pair common cathode
Technology must be Schottky
Maximum reverse voltage (Vr) must be equal to or greater than 45 V
Average rectified current (Io) per diode must be equal to or greater than 15 A
Fast recovery speed characteristic (≤ 500ns, > 200mA) must be maintained
Reverse leakage current must not exceed 100 µA @ 45 V

Mechanical Compatibility Requirements:

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

The MBRB1645CT-TP meets all substitution criteria and is classified as a direct equivalent for the MBRB1545CT-TP.

Parameter Comparison

Parameter	MBRB1545CT-TP (Main Part)	MBRB1645CT-TP (Substitute)
Manufacturer	Micro Commercial Co	Micro Commercial Co
Diode Configuration	1 Pair Common Cathode	1 Pair Common Cathode
Technology	Schottky	Schottky
Voltage - DC Reverse (Vr) (Max)	45 V	45 V
Current - Average Rectified (Io) (per Diode)	15 A	16 A
Voltage - Forward (Vf) (Max) @ If	840 mV @ 15 A	700 mV @ 8 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	100 µA @ 45 V	100 µA @ 45 V
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
REACH Status	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

The MBRB1645CT-TP is the manufacturer-recommended substitute for the MBRB1545CT-TP. The substitute part maintains identical electrical and mechanical specifications with the following distinctions:

Advantages of MBRB1645CT-TP:

Product status is Active, ensuring long-term availability and supply chain continuity
Current rating is increased to 16 A per diode, providing additional design margin above the 15 A requirement
Forward voltage is reduced to 700 mV @ 8 A, indicating improved efficiency characteristics

Compliance Status: Both parts maintain REACH Unaffected status and EAR99 ECCN classification, ensuring regulatory compliance across equivalent applications.

The MBRB1645CT-TP is suitable for direct replacement in all applications where the MBRB1545CT-TP was specified, with the understanding that the substitute part offers enhanced current capacity and improved forward voltage performance.

Frequently Asked Questions (FAQ)

Q: Can the MBRB1645CT-TP be used as a direct replacement for the MBRB1545CT-TP?

A: Yes. The MBRB1645CT-TP is electrically and mechanically compatible with the MBRB1545CT-TP. Both parts share identical reverse voltage ratings, diode configuration, package type, and fast recovery speed characteristics. The substitute part meets or exceeds all electrical requirements of the original part.

Q: What is the difference in current rating between these parts?

A: The MBRB1545CT-TP is rated for 15 A average rectified current per diode, while the MBRB1645CT-TP is rated for 16 A per diode. The substitute part provides 1 A additional capacity per diode, which represents a design margin improvement.

Q: Are the package dimensions identical?

A: Yes. Both the MBRB1545CT-TP and MBRB1645CT-TP use the TO-263-3 D2PAK package with 2 leads plus tab configuration. No PCB layout modifications are required for substitution.

Q: Why is the MBRB1545CT-TP classified as Obsolete?

A: The MBRB1545CT-TP has reached end-of-life status. The MBRB1645CT-TP is the active product line continuation from the manufacturer and is recommended for all new designs and production requirements.

Q: Are there any thermal operating temperature differences?

A: The MBRB1545CT-TP operates across -55°C to 150°C junction temperature range, while the MBRB1645CT-TP operates across -55°C to 125°C. For applications requiring operation above 125°C, the original part specification must be retained.

Q: Do both parts have the same reverse leakage characteristics?

A: Yes. Both parts specify 100 µA maximum reverse leakage current at 45 V, ensuring identical leakage performance in circuit applications.

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