MBR30100CTH Equivalent & Substitute Parts

Part Overview

The MBR30100CTH is a Schottky diode array in a 1 Pair Common Cathode configuration rated for 100 V DC reverse voltage and 30 A average rectified current per diode. Manufactured by Taiwan Semiconductor Corporation, this component is packaged in TO-220-3 through-hole format and qualified to AEC-Q101 automotive standards. The part is discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components that maintain functional compatibility within specified electrical and mechanical parameters.

Key Parameters

Parameter	Value
Diode Configuration	1 Pair Common Cathode
Technology	Schottky
Voltage - DC Reverse (Vr) (Max)	100 V
Current - Average Rectified (Io) (per Diode)	30 A
Voltage - Forward (Vf) (Max) @ If	940 mV @ 30 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Operating Temperature - Junction	-55°C ~ 150°C
Mounting Type	Through Hole
Package / Case	TO-220-3
Grade	Automotive
Qualification	AEC-Q101
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the MBR30100CTH is determined by the following critical parameters:

Mandatory Compatibility Parameters:

Diode Configuration: 1 Pair Common Cathode
Technology: Schottky
Voltage - DC Reverse (Vr) (Max): 100 V
Mounting Type: Through Hole
Package / Case: TO-220-3

Current Rating Consideration: The MBR30100CTH is rated for 30 A average rectified current per diode. Substitute parts are grouped by current capacity: parts rated at 15 A, 10 A, and 5 A represent reduced-current alternatives suitable for applications with lower current demands. Parts rated at 10 A or higher maintain closer electrical performance to the original specification.

Electrical Performance Parameters: Forward voltage (Vf), reverse leakage current, and operating temperature range vary among substitutes. These parameters affect thermal performance and switching characteristics but do not prevent functional substitution when the application current requirement is met.

Compliance and Qualification: The MBR30100CTH carries AEC-Q101 automotive qualification. Substitute parts with identical or equivalent automotive qualification maintain the same reliability standards. Parts without automotive qualification are suitable for non-automotive applications.

Parameter Comparison

Part Number	Manufacturer	Io (A)	Vf (Max) @ If	Vr (Max)	Ir @ Vr	Tj (°C)	Product Status	AEC-Q101
MBR30100CTH	Taiwan Semiconductor Corporation	30	940 mV @ 30 A	100 V	200 µA @ 100 V	-55 ~ 150	Discontinued	Yes
MBR30100CT	Diotec Semiconductor	15	850 mV @ 15 A	100 V	50 µA @ 100 V	-50 ~ 175	Active	No
MBR10100CT-BP	Micro Commercial Co	10	850 mV @ 5 A	100 V	200 µA @ 100 V	-55 ~ 150	Active	No
MBR10100CT-E3/4W	Vishay General Semiconductor - Diodes Division	5	850 mV @ 5 A	100 V	100 µA @ 100 V	-65 ~ 150	Active	No
MBR10100CT-G1	Diodes Incorporated	5	840 mV @ 5 A	100 V	50 µA @ 100 V	-55 ~ 150	Active	Yes
MBR10H100CT-E3/45	Vishay General Semiconductor - Diodes Division	5	760 mV @ 5 A	100 V	3.5 µA @ 100 V	-65 ~ 175	Active	No
MBR20100CT-BP	Micro Commercial Co	10	950 mV @ 20 A	100 V	150 µA @ 100 V	-55 ~ 150	Active	No
MBR20100CT-E3/4W	Vishay General Semiconductor - Diodes Division	10	800 mV @ 10 A	100 V	100 µA @ 100 V	-65 ~ 150	Active	No
MBR20100CT-G1	Diodes Incorporated	10	840 mV @ 10 A	100 V	50 µA @ 100 V	-55 ~ 175	Active	Yes
MBR20100CT-M3/4W	Vishay General Semiconductor - Diodes Division	10	800 mV @ 10 A	100 V	100 µA @ 100 V	-65 ~ 150	Active	No
MBR20H100CT-E3/45	Vishay General Semiconductor - Diodes Division	10	770 mV @ 10 A	100 V	4.5 µA @ 100 V	-65 ~ 150	Active	No

Engineering Selection Recommendations

For Automotive Applications Requiring AEC-Q101 Qualification:

MBR10100CT-G1 (Diodes Incorporated) and MBR20100CT-G1 (Diodes Incorporated) are the only substitute parts that maintain AEC-Q101 automotive qualification. MBR20100CT-G1 is preferred when application current requirements are 10 A or less, as it provides the closest current rating match to the original 30 A specification while maintaining automotive-grade reliability standards.

For Non-Automotive Applications with 15 A Current Requirement:

MBR30100CT (Diotec Semiconductor) provides a direct current rating match at 15 A and maintains the same 100 V reverse voltage specification. This part is suitable for applications where the full 30 A capacity of the original part is not required.

For Non-Automotive Applications with 10 A Current Requirement:

MBR20100CT-E3/4W, MBR20100CT-M3/4W, and MBR20H100CT-E3/45 (all Vishay General Semiconductor - Diodes Division) are rated for 10 A and offer extended operating temperature ranges (-65°C to 150°C or -65°C to 175°C). MBR20H100CT-E3/45 exhibits the lowest reverse leakage current (4.5 µA) and lowest forward voltage drop (770 mV @ 10 A), providing superior thermal performance.

For Non-Automotive Applications with 5 A Current Requirement:

MBR10100CT-E3/4W and MBR10H100CT-E3/45 (Vishay General Semiconductor - Diodes Division) are rated for 5 A. MBR10H100CT-E3/45 offers lower forward voltage (760 mV @ 5 A) and significantly lower reverse leakage current (3.5 µA @ 100 V), resulting in reduced power dissipation and improved efficiency in low-current applications.

Product Status Consideration:

All substitute parts listed are in Active product status, ensuring continued availability and manufacturing support. The original MBR30100CTH is discontinued at DiGi Electronics, making substitution necessary for new designs or component replenishment.

Frequently Asked Questions (FAQ)

Q: Can MBR30100CT be used as a direct replacement for MBR30100CTH?

A: MBR30100CT shares the same 100 V reverse voltage rating and 1 Pair Common Cathode configuration in TO-220-3 packaging. However, it is rated for 15 A average rectified current compared to the original 30 A rating. Substitution is valid only if the application current requirement does not exceed 15 A per diode.

Q: What is the difference between MBR20100CT-E3/4W and MBR20H100CT-E3/45?

A: Both parts are rated for 10 A at 100 V reverse voltage in TO-220-3 packaging. The MBR20H100CT-E3/45 exhibits superior electrical characteristics: forward voltage of 770 mV @ 10 A versus 800 mV, and reverse leakage current of 4.5 µA @ 100 V versus 100 µA. The "H" designation indicates enhanced performance characteristics. Operating temperature ranges differ: MBR20100CT-E3/4W operates from -65°C to 150°C, while MBR20H100CT-E3/45 operates from -65°C to 150°C.

Q: Are all substitute parts RoHS3 compliant?

A: All substitute parts listed carry ROHS3 Compliant status, matching the environmental compliance of the original MBR30100CTH.

Q: Which substitute part is recommended for automotive applications?

A: MBR20100CT-G1 (Diodes Incorporated) is the only substitute rated for 10 A that maintains AEC-Q101 automotive qualification. For applications requiring 5 A or less, MBR10100CT-G1 (Diodes Incorporated) is the automotive-qualified alternative.

Q: What is the significance of the "H" designation in part numbers like MBR10H100CT-E3/45?

A: The "H" designation indicates enhanced performance characteristics, typically lower forward voltage drop and reduced reverse leakage current compared to standard versions. These improvements result in lower power dissipation and improved thermal efficiency.

Q: Can I use a 5 A rated part in place of a 30 A rated part?

A: Substitution with lower current-rated parts is valid only when the actual application current requirement does not exceed the substitute part's rating. Using a 5 A part in a 30 A application will result in component failure due to thermal stress and current overload.

Q: What is the difference between TO-220-3 and TO-220AB packaging?

A: Both designations refer to the same through-hole package format with three leads. TO-220AB is the supplier device package designation used by some manufacturers. The physical dimensions and pin configuration are identical.

Q: Are there any moisture sensitivity concerns with these parts?

A: The original MBR30100CTH and all substitute parts with specified MSL ratings carry MSL 1 (Unlimited), indicating no moisture sensitivity limitations. Standard handling and storage procedures are sufficient.

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