MBRF30100CTH Equivalent & Substitute Parts

Part Overview

The MBRF30100CTH is a Schottky diode array manufactured by Taiwan Semiconductor Corporation, configured as 1 pair common cathode with 100 V reverse voltage rating and 30 A average rectified current per diode. The device is packaged in TO-220-3 with isolated tab and features fast recovery characteristics suitable for high-frequency rectification applications. This part is discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components that maintain electrical and mechanical compatibility for ongoing production and repair requirements.

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 ≤ 500 ns, > 200 mA (Io)
Current - Reverse Leakage @ Vr	200 µA @ 100 V
Operating Temperature - Junction	-55°C ~ 150°C
Mounting Type	Through Hole
Package / Case	TO-220-3 Full Pack, Isolated Tab
Supplier Device Package	ITO-220AB
RoHS Status	ROHS3 Compliant
Grade	Automotive
Qualification	AEC-Q101

Substitute Part Grouping Explanation

Substitution of the MBRF30100CTH is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Diode configuration: 1 pair common cathode
Technology: Schottky
Voltage rating: 100 V DC reverse (Vr)
Current rating: 30 A average rectified (Io) per diode
Package: TO-220-3 with isolated tab (ITO-220AB)
Mounting: Through hole

Secondary Compatibility Parameters:

Forward voltage (Vf) at rated current
Reverse leakage current (Ir)
Operating temperature range
RoHS and REACH compliance
Fast recovery speed characteristic

Substitute parts are grouped into two categories:

Direct Parametric Equivalent: MBRF30100CT maintains identical electrical specifications and packaging. This part differs only in packaging format (tube versus full pack) and product status (active versus discontinued).

Similar Current-Rated Alternatives: Parts with current ratings below 30 A (MBRF10100CT-E3/4W at 5 A, MBRF20100CT-E3/4W at 10 A, MBRF20H100CT-E3/45 at 10 A, MBRF30H100CT-E3/45 at 15 A) are listed as similar alternatives but do not provide equivalent current capacity and are suitable only for applications with reduced current requirements.

Higher Current Alternatives: Parts with current ratings above 30 A (VF40100C-E3/4W and VF40100C-M3/4W at 20 A) do not meet the 30 A specification and are not direct substitutes.

Voltage-Matched 10 A Alternatives: VF20100C-E3/4W and VF20100R-E3/4W maintain 100 V rating and TO-220-3 packaging but are rated for 10 A operation only.

Voltage-Matched 15 A Alternatives: VF30100C-E3/4W maintains 100 V rating and TO-220-3 packaging but is rated for 15 A operation only.

Parameter Comparison

Part Number	Manufacturer	Io (A)	Vr (V)	Vf (mV) @ If	Ir (µA) @ Vr	Tj (°C)	Package	Status
MBRF30100CTH	Taiwan Semiconductor	30	100	940 @ 30 A	200 @ 100 V	-55 ~ 150	TO-220-3 ITO-220AB	Discontinued
MBRF30100CT	Taiwan Semiconductor	30	100	940 @ 30 A	200 @ 100 V	-55 ~ 150	TO-220-3 ITO-220AB	Active
MBRF30H100CT-E3/45	Vishay General Semiconductor	15	100	820 @ 15 A	5 @ 100 V	-65 ~ 175	TO-220-3 ITO-220AB	Active
MBRF20H100CT-E3/45	Vishay General Semiconductor	10	100	770 @ 10 A	4.5 @ 100 V	-65 ~ 175	TO-220-3 ITO-220AB	Active
MBRF20100CT-E3/4W	Vishay General Semiconductor	10	100	800 @ 10 A	100 @ 100 V	-65 ~ 150	TO-220-3 ITO-220AB	Active
MBRF10100CT-E3/4W	Vishay General Semiconductor	5	100	850 @ 5 A	100 @ 100 V	-65 ~ 150	TO-220-3 ITO-220AB	Active
VF20100C-E3/4W	Vishay General Semiconductor	10	100	790 @ 10 A	800 @ 100 V	-40 ~ 150	TO-220-3 ITO-220AB	Active
VF20100R-E3/4W	Vishay General Semiconductor	10	100	900 @ 10 A	150 @ 100 V	-40 ~ 150	TO-220-3 ITO-220AB	Active
VF30100C-E3/4W	Vishay General Semiconductor	15	100	800 @ 15 A	500 @ 100 V	-40 ~ 150	TO-220-3 ITO-220AB	Active
VF40100C-E3/4W	Vishay General Semiconductor	20	100	730 @ 20 A	1000 @ 100 V	Not specified	TO-220-3 ITO-220AB	Active
VF40100C-M3/4W	Vishay General Semiconductor	20	100	730 @ 20 A	1000 @ 100 V	-40 ~ 150	TO-220-3 ITO-220AB	Active

Engineering Selection Recommendations

Direct Replacement:

MBRF30100CT is the direct parametric equivalent to MBRF30100CTH. Both parts maintain identical electrical specifications: 30 A average rectified current, 100 V reverse voltage, 940 mV forward voltage at 30 A, and 200 µA reverse leakage at 100 V. The primary difference is product status: MBRF30100CT is active and available, while MBRF30100CTH is discontinued. MBRF30100CT is packaged in tube format and is ROHS3 compliant with AEC-Q101 automotive qualification maintained. This part is the recommended direct replacement for the discontinued MBRF30100CTH.

Reduced Current Alternatives:

For applications where current requirements are lower than 30 A, the following parts provide equivalent voltage ratings and packaging:

MBRF30H100CT-E3/45 (15 A) and MBRF20H100CT-E3/45 (10 A) are Vishay parts with extended operating temperature ranges (-65°C to 175°C) and significantly lower reverse leakage currents (5 µA and 4.5 µA respectively). These parts are suitable for applications requiring 15 A or 10 A maximum current.

MBRF20100CT-E3/4W (10 A) and MBRF10100CT-E3/4W (5 A) provide additional options for reduced current applications with active product status.

VF20100C-E3/4W (10 A) and VF30100C-E3/4W (15 A) are Vishay TMBS® series alternatives with comparable forward voltage characteristics and active status. VF20100C-E3/4W exhibits higher reverse leakage (800 µA) compared to the main part. VF30100C-E3/4W exhibits higher reverse leakage (500 µA) compared to the main part.

Higher Current Alternatives:

VF40100C-E3/4W and VF40100C-M3/4W are rated for 20 A operation and do not provide the 30 A capacity of the main part. These parts are not suitable as direct replacements but may be considered for applications with 20 A maximum requirements.

Compliance Considerations:

All listed substitute parts maintain ROHS3 compliance and REACH unaffected status. The main part carries automotive grade designation with AEC-Q101 qualification. Substitute parts from Vishay General Semiconductor do not explicitly list automotive grade or AEC-Q101 qualification in the provided parameters. Applications requiring automotive qualification should verify compliance documentation with the manufacturer.

Frequently Asked Questions (FAQ)

Q: Can MBRF30100CT directly replace MBRF30100CTH?

A: Yes. MBRF30100CT is the direct parametric equivalent with identical electrical specifications (30 A, 100 V, 940 mV Vf, 200 µA Ir) and identical TO-220-3 ITO-220AB packaging. The primary difference is product status: MBRF30100CT is active while MBRF30100CTH is discontinued. Both parts are ROHS3 compliant.

Q: What is the difference between MBRF30100CTH and MBRF30100CT?

A: The parts are electrically and mechanically identical. MBRF30100CTH is packaged in full pack format and is discontinued at DiGi Electronics. MBRF30100CT is packaged in tube format and maintains active product status. Both maintain the same electrical performance and TO-220-3 isolated tab package configuration.

Q: Can I use a lower current rated part as a substitute?

A: Lower current rated parts (MBRF30H100CT-E3/45 at 15 A, MBRF20100CT-E3/4W at 10 A, MBRF10100CT-E3/4W at 5 A) can be used only in applications where the actual circuit current does not exceed the part's rating. These parts are not suitable for applications requiring the full 30 A capacity of the MBRF30100CTH. Verify circuit current requirements before selecting a lower-rated substitute.

Q: Are all substitute parts automotive qualified?

A: The main part MBRF30100CTH carries automotive grade designation with AEC-Q101 qualification. Substitute parts from Vishay General Semiconductor do not explicitly list automotive grade or AEC-Q101 qualification in the provided specifications. Applications requiring automotive qualification should verify compliance documentation directly with the manufacturer before selection.

Q: What is the significance of the forward voltage (Vf) differences between parts?

A: Forward voltage differences affect power dissipation and thermal performance. The main part specifies 940 mV at 30 A. Lower-rated alternatives exhibit different Vf values at their respective current ratings: MBRF30H100CT-E3/45 at 820 mV (15 A), MBRF20H100CT-E3/45 at 770 mV (10 A), and VF20100C-E3/4W at 790 mV (10 A). Direct comparison of Vf is valid only at identical current levels. For applications operating at 30 A, only MBRF30100CT maintains the specified 940 mV forward voltage.

Q: What is the significance of reverse leakage current (Ir) differences?

A: Reverse leakage current affects standby power consumption and thermal performance. The main part specifies 200 µA at 100 V. Some alternatives exhibit significantly lower leakage: MBRF30H100CT-E3/45 at 5 µA and MBRF20H100CT-E3/45 at 4.5 µA. Lower leakage reduces standby power dissipation. Higher leakage alternatives such as VF40100C-E3/4W at 1000 µA increase standby power consumption. Select based on application standby power requirements.

Q: Are the operating temperature ranges equivalent?

A: No. The main part specifies -55°C to 150°C. Vishay alternatives offer extended ranges: MBRF30H100CT-E3/45 and MBRF20H100CT-E3/45 extend to -65°C to 175°C. VF series parts are limited to -40°C to 150°C. Select based on application temperature requirements. Extended temperature range parts are suitable for wider environmental conditions.

Q: Is the TO-220-3 ITO-220AB package identical across all parts?

A: Yes. All listed parts use TO-220-3 Full Pack with isolated tab (ITO-220AB) package configuration. This ensures mechanical and thermal interface compatibility. Verify PCB layout and heatsink mounting compatibility before final selection.

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

A: This configuration contains two diodes with a common cathode connection. Both diodes share a single cathode terminal while maintaining separate anode connections. This configuration is suitable for bridge rectifier applications and dual-diode circuits. All listed substitute parts maintain this identical configuration.

Q: Can I use VF series parts as direct replacements?

A: VF series parts (VF20100C-E3/4W, VF30100C-E3/4W, VF40100C-E3/4W, VF40100C-M3/4W) are Vishay TMBS® technology alternatives. They maintain 100 V voltage rating and TO-220-3 packaging but differ in current ratings and reverse leakage characteristics. VF20100C-E3/4W and VF30100C-E3/4W are suitable only for reduced current applications (10 A and 15 A respectively). VF40100C variants at 20 A do not provide the 30 A capacity. These parts are not direct replacements for 30 A applications.

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