MBRF15100CTH Equivalent & Substitute Parts

Part Overview

The MBRF15100CTH is a Schottky diode array manufactured by Taiwan Semiconductor Corporation, configured as a 1 Pair Common Cathode with 100 V reverse voltage rating and 15 A average rectified current per diode. The device is packaged in TO-220-3 Full Pack with isolated tab and features fast recovery characteristics suitable for high-frequency rectification applications. This part is discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing design support and procurement.

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)	15 A
Voltage - Forward (Vf) (Max) @ If	920 mV @ 7.5 A
Speed	Fast Recovery ≤ 500 ns, > 200 mA (Io)
Current - Reverse Leakage @ Vr	100 µA @ 100 V
Operating Temperature - Junction	-55°C ~ 150°C
Mounting Type	Through Hole
Package / Case	TO-220-3 Full Pack, Isolated Tab
Grade	Automotive
Qualification	AEC-Q101
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the MBRF15100CTH are selected based on strict electrical and mechanical compatibility criteria. All substitute parts must meet the following requirements:

Mandatory Matching 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 Full Pack, Isolated Tab
Speed: Fast Recovery ≤ 500 ns, > 200 mA (Io)

Current Rating Compatibility: Substitute parts are grouped by average rectified current capacity. The MBRF15100CTH operates at 15 A per diode. Substitutes with equal or higher current ratings (15 A or 20 A) are direct replacements. Substitutes with lower current ratings (5 A or 10 A) are suitable only for applications requiring reduced current capacity.

Electrical Performance Variations: Forward voltage (Vf), reverse leakage current, and operating temperature range vary among substitutes. These variations are acceptable provided the substitute part meets or exceeds the application requirements for the specific parameter.

Parameter Comparison

Part Number	Manufacturer	Current (Io) per Diode	Vf (Max) @ If	Reverse Leakage @ 100V	Operating Temp Range	Product Status
MBRF15100CTH	Taiwan Semiconductor Corporation	15 A	920 mV @ 7.5 A	100 µA	-55°C ~ 150°C	Discontinued
MBRF10100CT-E3/4W	Vishay General Semiconductor	5 A	850 mV @ 5 A	100 µA	-65°C ~ 150°C	Active
MBRF20100CT-E3/4W	Vishay General Semiconductor	10 A	800 mV @ 10 A	100 µA	-65°C ~ 150°C	Active
MBRF20H100CT-E3/45	Vishay General Semiconductor	10 A	770 mV @ 10 A	4.5 µA	-65°C ~ 175°C	Active
MBRF30H100CT-E3/45	Vishay General Semiconductor	15 A	820 mV @ 15 A	5 µA	-65°C ~ 175°C	Active
VF20100C-E3/4W	Vishay General Semiconductor	10 A	790 mV @ 10 A	800 µA	-40°C ~ 150°C	Active
VF20100R-E3/4W	Vishay General Semiconductor	10 A	900 mV @ 10 A	150 µA	-40°C ~ 150°C	Active
VF30100C-E3/4W	Vishay General Semiconductor	15 A	800 mV @ 15 A	500 µA	-40°C ~ 150°C	Active
VF40100C-E3/4W	Vishay General Semiconductor	20 A	730 mV @ 20 A	1 mA	Not specified	Active
VF40100C-M3/4W	Vishay General Semiconductor	20 A	730 mV @ 20 A	1 mA	-40°C ~ 150°C	Active
VF40100G-E3/4W	Vishay General Semiconductor	20 A	810 mV @ 20 A	500 µA	-40°C ~ 150°C	Active

Engineering Selection Recommendations

Direct Replacement (Equal Current Rating - 15 A):

MBRF30H100CT-E3/45 and VF30100C-E3/4W are direct electrical replacements for the MBRF15100CTH. Both devices maintain the 15 A per diode current rating, 100 V reverse voltage specification, and identical package configuration. MBRF30H100CT-E3/45 offers extended operating temperature range (-65°C ~ 175°C) and lower reverse leakage current (5 µA), making it suitable for automotive and industrial applications requiring enhanced thermal performance. VF30100C-E3/4W operates within -40°C ~ 150°C and is compliant with ROHS3 and REACH requirements.

Higher Current Capacity Substitutes (20 A):

VF40100C-E3/4W, VF40100C-M3/4W, and VF40100G-E3/4W provide 20 A per diode capacity, exceeding the original specification. These parts are suitable for applications requiring increased current headroom or thermal margin. All three maintain 100 V reverse voltage and identical package configuration. VF40100C-M3/4W and VF40100G-E3/4W specify operating temperature ranges; VF40100C-E3/4W does not provide this specification.

Lower Current Capacity Substitutes (5 A or 10 A):

MBRF10100CT-E3/4W (5 A), MBRF20100CT-E3/4W (10 A), MBRF20H100CT-E3/45 (10 A), VF20100C-E3/4W (10 A), and VF20100R-E3/4W (10 A) are suitable only for applications where the original 15 A requirement can be reduced. These parts maintain electrical compatibility and package configuration but operate at reduced current levels.

Compliance and Certification:

All substitute parts are ROHS3 compliant and REACH unaffected. The original MBRF15100CTH carries automotive grade qualification (AEC-Q101). MBRF30H100CT-E3/45 maintains automotive-grade characteristics with extended temperature range, making it the preferred substitute for automotive applications.

Frequently Asked Questions (FAQ)

Q: Can MBRF30H100CT-E3/45 directly replace MBRF15100CTH in all applications?

A: Yes, MBRF30H100CT-E3/45 is a direct electrical replacement. Both devices share identical diode configuration, 100 V reverse voltage rating, 15 A current capacity, fast recovery speed, and TO-220-3 package. MBRF30H100CT-E3/45 offers improved specifications including lower reverse leakage current (5 µA vs. 100 µA) and extended operating temperature range (-65°C ~ 175°C vs. -55°C ~ 150°C).

Q: What is the difference between MBRF and VF series substitutes?

A: Both MBRF and VF series are Schottky diode arrays from Vishay General Semiconductor with identical package and configuration specifications. The primary differences are forward voltage characteristics, reverse leakage current, and operating temperature ranges. Selection between series depends on application-specific requirements for these parameters.

Q: Can I use a 10 A rated substitute in place of the 15 A MBRF15100CTH?

A: A 10 A substitute is suitable only if the application current requirement is 10 A or less. The original MBRF15100CTH is rated for 15 A per diode; using a lower-rated device in a 15 A application results in thermal stress and reduced device reliability.

Q: Are all substitute parts automotive qualified?

A: The original MBRF15100CTH carries AEC-Q101 automotive qualification. Among substitutes, MBRF30H100CT-E3/45 maintains automotive-grade characteristics. Other substitutes are industrial-grade components. Automotive applications should specify MBRF30H100CT-E3/45 to maintain qualification compliance.

Q: What is the significance of the isolated tab in the TO-220-3 package?

A: The isolated tab prevents electrical connection between the device tab and the mounting surface. This allows direct mounting to a common heat sink without electrical isolation hardware, reducing thermal resistance and simplifying thermal management in high-current applications.

Q: How do forward voltage differences affect circuit performance?

A: Forward voltage (Vf) variations among substitutes range from 730 mV to 920 mV at rated current. Lower Vf reduces power dissipation and heat generation. Higher Vf increases power loss. Circuit designs with tight voltage regulation or high-frequency switching should account for these variations in thermal and efficiency calculations.

Q: Is the MBRF15100CTH still available from other suppliers?

A: The MBRF15100CTH is discontinued at DiGi Electronics. Availability from other distributors may vary. Active substitute parts listed in this reference provide equivalent functionality with current product support and supply chain availability.

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