MBR30L100CT Equivalent & Substitute Parts

Part Overview

The MBR30L100CT is a Schottky diode array with 1 pair common cathode configuration rated for 100 V DC reverse voltage and 30 A average rectified current per diode. The device is packaged in TO-220-3 through-hole format and features fast recovery characteristics with maximum forward voltage of 770 mV at 15 A. This 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	Unit
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	770 mV @ 15 A	—
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Current - Reverse Leakage @ Vr	500	µA @ 100 V
Operating Temperature - Junction	-55 to 150	°C
Mounting Type	Through Hole	—
Package / Case	TO-220-3	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the MBR30L100CT is determined by strict equivalence across the following critical parameters:

Primary Equivalence Criteria:

Diode Configuration: 1 Pair Common Cathode
Technology: Schottky
Voltage - DC Reverse (Vr) (Max): 100 V
Current - Average Rectified (Io) (per Diode): 30 A
Package / Case: TO-220-3
Mounting Type: Through Hole

Secondary Compatibility Parameters:

Voltage - Forward (Vf) (Max) @ If: 770 mV @ 15 A (tolerance range acceptable)
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
Operating Temperature - Junction: -55°C to 150°C (minimum)
RoHS Status: ROHS3 Compliant

Parts are classified into three categories:

Direct Parametric Equivalents: Parts matching all primary equivalence criteria with identical or superior electrical performance.

Direct Manufacturer Alternatives: Parts from different manufacturers with matching primary criteria but variations in secondary parameters such as forward voltage or reverse leakage current.

Similar Current-Rated Alternatives: Parts with reduced current ratings (10 A, 15 A, 20 A) that maintain 100 V reverse voltage and TO-220-3 packaging but are suitable only for applications with lower current requirements.

Parameter Comparison

Part Number	Manufacturer	Io (A)	Vf (Max) @ If	Vr (Max)	Ir @ Vr	Tj (°C)	Product Status	RoHS
MBR30L100CT	Taiwan Semiconductor Corporation	30	770 mV @ 15 A	100 V	500 µA @ 100 V	-55 to 150	Discontinued	ROHS3
MBR30L100CTHC0G	Taiwan Semiconductor Corporation	30	770 mV @ 15 A	100 V	500 µA @ 100 V	-55 to 150	Active	ROHS3
MBR30100CT	Diotec Semiconductor	15	850 mV @ 15 A	100 V	50 µA @ 100 V	-50 to 175	Active	Not applicable
MBR30100CTP	SMC Diode Solutions	—	850 mV @ 15 A	100 V	1 mA @ 100 V	-55 to 150	Active	ROHS3
MBR30100CTU	SMC Diode Solutions	—	820 mV @ 15 A	100 V	1 mA @ 100 V	-55 to 150	Active	ROHS3
MBR10100CT-BP	Micro Commercial Co	10	850 mV @ 5 A	100 V	200 µA @ 100 V	-55 to 150	Active	ROHS3
MBR10100CT-E3/4W	Vishay General Semiconductor - Diodes Division	5	850 mV @ 5 A	100 V	100 µA @ 100 V	-65 to 150	Active	ROHS3
MBR10100CT-G1	Diodes Incorporated	5	840 mV @ 5 A	100 V	50 µA @ 100 V	-55 to 150	Active	ROHS3
MBR10H100CT-E3/45	Vishay General Semiconductor - Diodes Division	5	760 mV @ 5 A	100 V	3.5 µA @ 100 V	-65 to 175	Active	ROHS3
MBR20100CT-BP	Micro Commercial Co	10	950 mV @ 20 A	100 V	150 µA @ 100 V	-55 to 150	Active	ROHS3
MBR20100CT-E3/4W	Vishay General Semiconductor - Diodes Division	10	800 mV @ 10 A	100 V	100 µA @ 100 V	-65 to 150	Active	ROHS3

Engineering Selection Recommendations

Direct Parametric Equivalent (Recommended Primary Replacement):

MBR30L100CTHC0G from Taiwan Semiconductor Corporation is the direct parametric equivalent to the discontinued MBR30L100CT. This part maintains identical electrical specifications including 30 A average rectified current, 100 V reverse voltage, and 770 mV forward voltage at 15 A. The device is currently in active production status with 667 units in stock. The part carries ROHS3 compliance and includes AEC-Q101 automotive qualification, providing enhanced reliability for applications requiring automotive-grade components.

Alternative Current-Rated Selections:

For applications where the full 30 A current rating is not required, the following active alternatives are available:

MBR30100CT (Diotec Semiconductor) and MBR30100CTP/MBR30100CTU (SMC Diode Solutions) provide 15 A current ratings with 100 V reverse voltage in TO-220-3 packaging. These parts maintain ROHS3 compliance and are in active production with substantial inventory availability.

MBR20100CT-E3/4W (Vishay General Semiconductor - Diodes Division) and MBR20100CT-BP (Micro Commercial Co) provide 10 A current ratings with 100 V reverse voltage. Both are ROHS3 compliant and actively produced.

MBR10100CT-BP (Micro Commercial Co), MBR10100CT-E3/4W (Vishay General Semiconductor - Diodes Division), MBR10100CT-G1 (Diodes Incorporated), and MBR10H100CT-E3/45 (Vishay General Semiconductor - Diodes Division) provide 5 A to 10 A current ratings with 100 V reverse voltage. All are ROHS3 compliant and in active production.

Compliance Considerations:

All recommended substitutes maintain ROHS3 compliance. The MBR30L100CTHC0G includes AEC-Q101 automotive qualification, suitable for automotive applications. Parts from SMC Diode Solutions (MBR30100CTP, MBR30100CTU) carry REACH Affected status, requiring verification against specific application REACH requirements.

Frequently Asked Questions (FAQ)

Q: Can MBR30L100CTHC0G directly replace the discontinued MBR30L100CT?

A: Yes. MBR30L100CTHC0G is the direct parametric equivalent with identical diode configuration, voltage rating, current rating, forward voltage characteristics, and TO-220-3 packaging. The part is currently in active production.

Q: What is the primary difference between MBR30L100CT and MBR30100CT?

A: The primary difference is current rating. MBR30L100CT is rated for 30 A average rectified current per diode, while MBR30100CT is rated for 15 A. Both maintain 100 V reverse voltage and TO-220-3 packaging. MBR30100CT is suitable only for applications with maximum 15 A current requirements.

Q: Are lower current-rated parts (10 A, 5 A) suitable replacements?

A: Lower current-rated parts maintain the same 100 V reverse voltage and TO-220-3 packaging but are suitable only for applications with correspondingly reduced current requirements. Selection depends on actual circuit current demands. Using an undersized current rating may result in excessive junction temperature and reduced component reliability.

Q: What is the significance of the forward voltage (Vf) differences among substitutes?

A: Forward voltage variations (760 mV to 950 mV) affect power dissipation and thermal performance. Lower forward voltage reduces heat generation. Selection should consider circuit operating current and thermal management requirements. The MBR30L100CTHC0G maintains the original 770 mV specification.

Q: Does package designation TO-220-3 versus TO-220AB affect compatibility?

A: TO-220-3 and TO-220AB refer to the same three-lead through-hole package format. Both designations are compatible with standard TO-220-3 footprints and mounting hardware.

Q: What is the importance of RoHS3 compliance in substitute selection?

A: ROHS3 compliance indicates the component meets Restriction of Hazardous Substances Directive requirements, restricting lead and other hazardous materials. All recommended substitutes maintain ROHS3 compliance, ensuring regulatory compliance for end applications.

Q: Can MBR10H100CT-E3/45 be used in place of MBR30L100CT?

A: No. MBR10H100CT-E3/45 is rated for 5 A average rectified current, significantly below the 30 A requirement of MBR30L100CT. This part is suitable only for applications with maximum 5 A current demands.

Q: What does "1 Pair Common Cathode" configuration mean?

A: This configuration contains two diodes with a shared cathode terminal, typically used in bridge rectifier or dual-diode applications. All listed substitutes maintain this same configuration, ensuring functional compatibility in circuits designed for common cathode topology.

Q: Are there inventory considerations for substitute selection?

A: Yes. MBR30L100CTHC0G has 667 units in stock. MBR30100CT (Diotec) has 49,417 units available. MBR20100CT-E3/4W has 8,786 units in stock. Inventory levels should be verified at time of procurement to ensure supply availability.

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