MBRF30100CT-LJ Equivalent & Substitute Parts

Part Overview

The MBRF30100CT-LJ is a Schottky diode array manufactured by Diodes Incorporated, configured as 1 pair common cathode with 100 V reverse voltage rating and 15 A average rectified current per diode. The component is packaged in TO-220-3 Full Pack with isolated tab (ITO-220AB) for through-hole mounting applications.

This part is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for new production runs and field replacements. Substitute parts maintain the same electrical specifications and mechanical compatibility while offering active product status and improved availability.

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)	15	A
Voltage - Forward (Vf) (Max) @ If	840 mV @ 15 A	—
Mounting Type	Through Hole	—
Package / Case	TO-220-3 Full Pack, Isolated Tab	—
Operating Temperature - Junction	-50°C ~ 175°C	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the MBRF30100CT-LJ is determined by the following critical parameters:

Primary Substitution Criteria:

Diode configuration: 1 Pair Common Cathode
Technology: Schottky
Voltage - DC Reverse (Vr) (Max): 100 V
Current - Average Rectified (Io) (per Diode): 15 A
Mounting Type: Through Hole
Package / Case: TO-220-3 Full Pack

Secondary Compatibility Factors:

Voltage - Forward (Vf) characteristics within acceptable operating range
Operating temperature range compatibility
RoHS3 compliance
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts are grouped into two categories based on package configuration:

Category 1: Isolated Tab Package (ITO-220AB) Parts maintaining the exact isolated tab configuration of the original component: DSTF30100C, DSTF40100C, DSTF60100C, DSTF20100C, MBRF10100CTL

Category 2: Standard TO-220-3 Package (TO-220F-3 or TO-220ABFP) Parts with equivalent electrical specifications but different package variants: MBR30100CTF-G1, DSA20C100PN, DSA30C100PN

Parameter Comparison

Parameter	MBRF30100CT-LJ	MBR30100CTF-G1	DSA30C100PN	DSTF30100C	DSTF40100C	DSTF60100C
Manufacturer	Diodes Inc.	Diodes Inc.	IXYS	Littelfuse Inc.	Littelfuse Inc.	Littelfuse Inc.
Diode Configuration	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode
Technology	Schottky	Schottky	Schottky	Schottky	Schottky	Schottky
Voltage - DC Reverse (Vr) (Max)	100 V	100 V	100 V	100 V	100 V	100 V
Current - Average Rectified (Io) (per Diode)	15 A	15 A	15 A	15 A	20 A	30 A
Voltage - Forward (Vf) (Max) @ If	840 mV @ 15 A	850 mV @ 15 A	910 mV @ 15 A	750 mV @ 15 A	750 mV @ 20 A	900 mV @ 30 A
Speed	No Recovery Time > 500mA (Io)	Fast Recovery =< 500ns, > 200mA (Io)	Fast Recovery =< 500ns, > 200mA (Io)	Fast Recovery =< 500ns, > 200mA (Io)	Fast Recovery =< 500ns, > 200mA (Io)	Fast Recovery =< 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	50 µA @ 100 V	100 µA @ 100 V	300 µA @ 100 V	500 µA @ 100 V	1 mA @ 100 V	1 mA @ 100 V
Operating Temperature - Junction	-50°C ~ 175°C	-55°C ~ 150°C	-55°C ~ 175°C	-55°C ~ 100°C	-55°C ~ 150°C	-55°C ~ 150°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	TO-220-3 Full Pack, Isolated Tab	TO-220-3 Full Pack	TO-220-3 Full Pack	TO-220-3 Full Pack, Isolated Tab	TO-220-3 Full Pack, Isolated Tab	TO-220-3 Full Pack, Isolated Tab
Supplier Device Package	ITO-220AB	TO-220F-3	TO-220ABFP	ITO-220AB	ITO-220AB	ITO-220AB
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Direct Equivalent (Isolated Tab Configuration):

DSTF30100C is the primary substitute for MBRF30100CT-LJ. Both components maintain the ITO-220AB isolated tab package configuration, identical diode configuration, 100 V reverse voltage rating, and 15 A current rating. DSTF30100C is manufactured by Littelfuse Inc. with active product status and ROHS3 compliance. The forward voltage specification (750 mV @ 15 A) is lower than the original part, resulting in reduced power dissipation. Operating temperature range is -55°C to 100°C, which is narrower than the original -50°C to 175°C range; this must be evaluated against application requirements.

Alternative with Improved Current Handling:

DSTF40100C and DSTF60100C provide higher current ratings (20 A and 30 A respectively) while maintaining the 100 V reverse voltage specification and isolated tab package. These parts are suitable for applications requiring higher current capacity than the original 15 A specification. Both are active products with ROHS3 compliance.

Standard Package Alternative:

MBR30100CTF-G1 is manufactured by Diodes Incorporated with identical electrical specifications to MBRF30100CT-LJ (100 V, 15 A, 1 Pair Common Cathode). This part uses the TO-220F-3 standard package instead of the isolated tab variant. MBR30100CTF-G1 is active product status with ROHS3 compliance and offers superior availability (3190 units in stock).

Lower Current Alternatives:

MBRF10100CTL (5 A) and DSTF20100C (10 A) are available for applications with reduced current requirements. Both maintain 100 V reverse voltage rating and isolated tab package configuration with active product status.

All substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing and storage processes.

Frequently Asked Questions (FAQ)

Q: Can MBR30100CTF-G1 be used as a direct replacement for MBRF30100CT-LJ?

A: MBR30100CTF-G1 is electrically equivalent with identical 100 V reverse voltage, 15 A current rating, and 1 Pair Common Cathode configuration. The primary difference is the package variant: MBR30100CTF-G1 uses TO-220F-3 standard package while MBRF30100CT-LJ uses ITO-220AB isolated tab package. If the isolated tab feature is required for thermal or electrical isolation in the application, DSTF30100C is the appropriate substitute. If standard package is acceptable, MBR30100CTF-G1 is suitable.

Q: What is the difference between isolated tab (ITO-220AB) and standard TO-220 packages?

A: The isolated tab variant (ITO-220AB) provides electrical isolation between the tab and the semiconductor junction, allowing the tab to be mounted directly to a heat sink without additional isolation hardware. Standard TO-220 packages have the tab electrically connected to one of the internal leads. Selection depends on thermal management and electrical isolation requirements of the specific application.

Q: Can DSTF40100C or DSTF60100C be used in place of MBRF30100CT-LJ?

A: DSTF40100C (20 A) and DSTF60100C (30 A) maintain the same 100 V reverse voltage rating, isolated tab package, and 1 Pair Common Cathode configuration. These parts have higher current ratings than the original 15 A specification. They are electrically compatible and can be used in applications where the original part is specified, provided the application does not have current-limiting requirements that would be violated by the higher rating. Forward voltage characteristics differ slightly due to the higher current rating.

Q: What is the impact of forward voltage differences between substitute parts?

A: Forward voltage (Vf) affects power dissipation and heat generation. MBRF30100CT-LJ specifies 840 mV @ 15 A, while DSTF30100C specifies 750 mV @ 15 A. The lower forward voltage of DSTF30100C results in reduced power dissipation (P = Vf × I). This is generally beneficial for thermal management but must be verified against circuit design parameters that may depend on specific forward voltage characteristics.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing processes and environmental regulations.

Q: What is the significance of operating temperature range differences?

A: MBRF30100CT-LJ specifies -50°C to 175°C junction temperature range. DSTF30100C specifies -55°C to 100°C. The lower maximum temperature of DSTF30100C must be evaluated against application requirements. If the application requires operation above 100°C junction temperature, DSTF30100C is not suitable. MBR30100CTF-G1 and DSA30C100PN both support -55°C to 150°C, providing better high-temperature capability.

Q: Can DSA20C100PN or DSA30C100PN be used as substitutes?

A: DSA30C100PN is electrically equivalent to MBRF30100CT-LJ with 100 V reverse voltage and 15 A current rating. However, DSA30C100PN uses TO-220ABFP package instead of ITO-220AB isolated tab package. DSA20C100PN has a reduced current rating of 10 A and is suitable only for applications with lower current requirements. Both are manufactured by IXYS with active product status and ROHS3 compliance.

Q: What inventory considerations apply to substitute selection?

A: Current inventory levels are: MBR30100CTF-G1 (3190 units), DSA30C100PN (816 units), DSTF30100C (1160 units), DSTF40100C (933 units), DSTF60100C (827 units), DSTF20100C (1040 units), MBRF10100CTL (2321 units). MBR30100CTF-G1 offers the highest availability for immediate procurement.

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