MBR20100CT-LJ Equivalent & Substitute Parts

Part Overview

The MBR20100CT-LJ is a Schottky diode array in a 1 Pair Common Cathode configuration rated for 100 V DC reverse voltage and 10 A average rectified current per diode. Manufactured by Diodes Incorporated, this component is packaged in a Through Hole TO-220-3 case and is classified as Obsolete. Due to its obsolete status and limited availability relative to active alternatives, identifying equivalent and substitute parts is necessary for ongoing design support and production continuity.

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)	10 A
Voltage - Forward (Vf) (Max) @ If	840 mV @ 10 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	50 µA @ 100 V
Operating Temperature - Junction	-55°C ~ 175°C
Mounting Type	Through Hole
Package / Case	TO-220-3
RoHS Status	ROHS3 Compliant
Grade	Automotive

Substitute Part Grouping Explanation

Substitution of the MBR20100CT-LJ is determined by the following critical parameters:

Mandatory Matching Parameters:

Diode Configuration: 1 Pair Common Cathode
Technology: Schottky
Voltage - DC Reverse (Vr) (Max): 100 V
Current - Average Rectified (Io) (per Diode): 10 A minimum
Mounting Type: Through Hole
Package / Case: TO-220-3

Allowable Variation Parameters:

Voltage - Forward (Vf) (Max) @ If: Acceptable within engineering tolerance for the application
Current - Reverse Leakage @ Vr: Acceptable within engineering tolerance
Operating Temperature - Junction: May vary; lower maximum junction temperature acceptable if application requirements are met
Product Status: Active parts preferred over obsolete; however, parametrically equivalent obsolete parts remain valid substitutes
Supplier Device Package designation: May differ (TO-220-3, TO-220AB, TO-220) while maintaining mechanical and electrical compatibility

Substitute parts are grouped into two categories: Parametric Equivalents (identical electrical specifications) and Functional Substitutes (compatible electrical performance with allowable parameter variations).

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io (per Diode)	Vf (Max) @ If	Reverse Leakage @ Vr	Tj (Junction)	Product Status	Package
MBR20100CT-LJ	Diodes Incorporated	100 V	10 A	840 mV @ 10 A	50 µA @ 100 V	-55°C ~ 175°C	Obsolete	TO-220-3
MBR20100CT-G1	Diodes Incorporated	100 V	10 A	840 mV @ 10 A	50 µA @ 100 V	-55°C ~ 175°C	Active	TO-220-3
DST20100C	Littelfuse Inc.	100 V	10 A	550 mV @ 10 A	300 µA @ 100 V	-55°C ~ 150°C	Active	TO-220-3
DST30100C	Littelfuse Inc.	100 V	10 A	750 mV @ 15 A	500 µA @ 100 V	-55°C ~ 150°C	Active	TO-220-3
DST40100C	Littelfuse Inc.	100 V	20 A	750 mV @ 20 A	1 mA @ 100 V	-55°C ~ 150°C	Active	TO-220-3
MBR10100CT	Taiwan Semiconductor Corporation	100 V	10 A	950 mV @ 10 A	100 µA @ 100 V	-55°C ~ 150°C	Discontinued at DiGi Electronics	TO-220-3
MBR20100CTP	Littelfuse Inc.	100 V	10 A	900 mV @ 10 A	1 mA @ 100 V	-55°C ~ 150°C	Active	TO-220-3
NTST40100CTG	onsemi	100 V	20 A	800 mV @ 20 A	12 µA @ 70 V	-40°C ~ 150°C	Obsolete	TO-220-3

Engineering Selection Recommendations

Primary Equivalent (Active Status): MBR20100CT-G1 is the direct parametric equivalent to MBR20100CT-LJ. Both parts are manufactured by Diodes Incorporated with identical electrical specifications (100 V, 10 A, 840 mV forward voltage, 50 µA reverse leakage). MBR20100CT-G1 holds Active product status and carries AEC-Q101 automotive qualification, making it the preferred replacement for new designs and production continuity.

Secondary Equivalents (Active Status, Littelfuse Manufacturer): MBR20100CTP (Littelfuse Inc.) maintains the 100 V / 10 A rating with 900 mV forward voltage and 1 mA reverse leakage. This part is Active and ROHS3 compliant. Forward voltage and reverse leakage parameters differ from the original but remain within acceptable engineering tolerance for Schottky diode applications.

Functional Substitutes (Higher Current Rating): DST40100C and NTST40100CTG both provide 100 V / 20 A ratings, offering increased current capacity. These parts are suitable for applications requiring higher current handling than the original 10 A specification. DST40100C is Active; NTST40100CTG is Obsolete.

Functional Substitutes (10 A Rating, Littelfuse): DST20100C and DST30100C both maintain 100 V / 10 A specifications with varying forward voltage characteristics (550 mV and 750 mV respectively). Both are Active and ROHS3 compliant.

Discontinued Alternative: MBR10100CT (Taiwan Semiconductor Corporation) is listed as Discontinued at DiGi Electronics but remains parametrically compatible with 100 V / 10 A specifications. This part should be considered only when active alternatives are unavailable.

All recommended substitutes maintain TO-220-3 Through Hole packaging, Schottky technology, 1 Pair Common Cathode configuration, and ROHS3 compliance. Operating temperature ranges vary; applications requiring the full -55°C to 175°C range of the original part should prioritize MBR20100CT-G1.

Frequently Asked Questions (FAQ)

Q: Can MBR20100CT-G1 be used as a direct replacement for MBR20100CT-LJ?

A: Yes. MBR20100CT-G1 is a parametric equivalent with identical electrical specifications: 100 V reverse voltage, 10 A average rectified current, 840 mV forward voltage at 10 A, and 50 µA reverse leakage at 100 V. Both use TO-220-3 Through Hole packaging. MBR20100CT-G1 is Active and carries AEC-Q101 automotive qualification.

Q: What is the difference between MBR20100CT-LJ and DST40100C?

A: The primary difference is current rating. DST40100C is rated for 20 A average rectified current per diode, compared to 10 A for MBR20100CT-LJ. Both maintain 100 V reverse voltage and TO-220-3 packaging. DST40100C is suitable for applications requiring higher current capacity. Forward voltage is 750 mV at 20 A for DST40100C versus 840 mV at 10 A for the original part.

Q: Are there packaging differences between substitute parts?

A: All substitute parts listed use TO-220-3 Through Hole packaging, maintaining mechanical compatibility with the original MBR20100CT-LJ. Supplier device package designations may vary (TO-220-3, TO-220AB, TO-220) but represent the same physical package form factor.

Q: Why is MBR20100CT-LJ listed as Obsolete?

A: Obsolete status indicates the part is no longer manufactured or supported by the original manufacturer. Active equivalents such as MBR20100CT-G1 are available for new designs and production requirements.

Q: Can I use a 20 A rated part (DST40100C or NTST40100CTG) in place of the 10 A rated MBR20100CT-LJ?

A: Yes, from an electrical compatibility standpoint. Higher current-rated parts are suitable for applications originally designed for 10 A, provided the circuit design accommodates the different forward voltage and reverse leakage characteristics. DST40100C (750 mV forward voltage) and NTST40100CTG (800 mV forward voltage) differ from the original 840 mV specification.

Q: What is the operating temperature range difference between MBR20100CT-LJ and its substitutes?

A: MBR20100CT-LJ operates from -55°C to 175°C junction temperature. Most active substitutes (DST20100C, DST30100C, DST40100C, MBR20100CTP) operate from -55°C to 150°C. Applications requiring the full 175°C upper limit should use MBR20100CT-G1, which matches the original -55°C to 175°C range.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 compliant, matching the environmental compliance status of MBR20100CT-LJ.

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

A: This indicates the diode array contains two diodes sharing a common cathode connection. All substitute parts maintain this same configuration, ensuring pin compatibility and functional equivalence in circuit applications.

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