MBRF30L45CT Equivalent & Substitute Parts

Part Overview

The MBRF30L45CT is a Schottky diode array manufactured by Taiwan Semiconductor Corporation, configured as 1 pair common cathode with 45 V reverse voltage rating and 30 A average rectified current per diode. The device is packaged in TO-220-3 Full Pack with isolated tab (ITO-220AB) for through-hole mounting applications. 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
Diode Configuration	1 Pair Common Cathode
Technology	Schottky
Voltage - DC Reverse (Vr) (Max)	45 V
Current - Average Rectified (Io) (per Diode)	30 A
Voltage - Forward (Vf) (Max) @ If	740 mV @ 30 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	400 µA @ 45 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
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the MBRF30L45CT is determined by the following critical parameters:

Primary Substitution Criteria:

Diode configuration: 1 Pair Common Cathode
Technology: Schottky
Voltage - DC Reverse (Vr) (Max): 45 V minimum
Mounting Type: Through Hole
Package / Case: TO-220-3 Full Pack, Isolated Tab (ITO-220AB)

Secondary Substitution Criteria:

Current - Average Rectified (Io) (per Diode): 30 A or greater
Operating Temperature - Junction: -55°C or lower minimum, 150°C or higher maximum
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)

Substitute parts are grouped into three categories:

Parametric Equivalent: MBRF30L45CTHC0G maintains identical electrical specifications with automotive-grade qualification (AEC-Q101) and active product status.

Direct Manufacturer Equivalents: MBRF3045CT and MBRF3045CTP share the same base specifications with minor variations in forward voltage and reverse leakage characteristics. MBRF3045CT is discontinued at DiGi Electronics; MBRF3045CTP is active with tube packaging.

Similar Current-Rated Parts: MBRF30H45CT-E3/45 provides 15 A current rating with extended temperature range (-65°C ~ 175°C) and lower forward voltage characteristics. This part is suitable for applications where the full 30 A rating is not required.

Lower Current-Rated Parts: MBRF2545CT-E3/45, MBRF2045CT-E3/45, and MBRF1545CT-E3/45 provide 12.5 A, 10 A, and 7.5 A ratings respectively. These parts are suitable only for applications with reduced current requirements and maintain 45 V reverse voltage rating.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io (per Diode)	Vf (Max) @ If	Ir @ Vr	Tj (Min ~ Max)	Product Status	Package
MBRF30L45CT	Taiwan Semiconductor Corporation	45 V	30 A	740 mV @ 30 A	400 µA @ 45 V	-55°C ~ 150°C	Discontinued at DiGi Electronics	TO-220-3 Full Pack, Isolated Tab
MBRF30L45CTHC0G	Taiwan Semiconductor Corporation	45 V	30 A	740 mV @ 30 A	400 µA @ 45 V	-55°C ~ 150°C	Active	TO-220-3 Full Pack, Isolated Tab
MBRF3045CT	Taiwan Semiconductor Corporation	45 V	30 A	820 mV @ 30 A	200 µA @ 45 V	-55°C ~ 150°C	Discontinued at DiGi Electronics	TO-220-3 Full Pack, Isolated Tab
MBRF3045CTP	SMC Diode Solutions	45 V	Not specified	700 mV @ 15 A	1 mA @ 45 V	-55°C ~ 150°C	Active	TO-220-3 Full Pack, Isolated Tab
MBRF30H45CT-E3/45	Vishay General Semiconductor - Diodes Division	45 V	15 A	620 mV @ 15 A	80 µA @ 45 V	-65°C ~ 175°C	Active	TO-220-3 Full Pack, Isolated Tab
MBRF2545CT-E3/45	Vishay General Semiconductor - Diodes Division	45 V	12.5 A	820 mV @ 30 A	200 µA @ 45 V	-65°C ~ 150°C	Active	TO-220-3 Full Pack, Isolated Tab
MBRF2045CT-E3/45	Vishay General Semiconductor - Diodes Division	45 V	10 A	650 mV @ 10 A	100 µA @ 45 V	-65°C ~ 150°C	Active	TO-220-3 Full Pack, Isolated Tab
MBRF1545CT-E3/45	Vishay General Semiconductor - Diodes Division	45 V	7.5 A	570 mV @ 7.5 A	100 µA @ 45 V	-65°C ~ 150°C	Active	TO-220-3 Full Pack, Isolated Tab

Engineering Selection Recommendations

Primary Selection - Parametric Equivalent:

MBRF30L45CTHC0G is the direct parametric equivalent to MBRF30L45CT. This part maintains identical electrical specifications including 45 V reverse voltage, 30 A average rectified current, and 740 mV forward voltage at 30 A. The part is currently active with 837 units in stock. MBRF30L45CTHC0G includes automotive-grade qualification (AEC-Q101) and is ROHS3 compliant, providing enhanced reliability for demanding applications.

Secondary Selection - Direct Manufacturer Equivalent:

MBRF3045CTP is an active alternative from SMC Diode Solutions. This part maintains 45 V reverse voltage and TO-220-3 Full Pack, Isolated Tab packaging. Forward voltage is specified at 700 mV @ 15 A with 1 mA reverse leakage @ 45 V. MBRF3045CTP is supplied in tube packaging with 1086 units in stock. REACH status is affected for this part.

Tertiary Selection - Extended Temperature Range:

MBRF30H45CT-E3/45 from Vishay General Semiconductor provides 15 A current rating with extended operating temperature range (-65°C ~ 175°C) compared to the original part's -55°C ~ 150°C. This part is suitable for applications where the full 30 A rating is not required but extended temperature performance is beneficial. The part is active with 4200 units in stock.

Lower Current Alternatives:

MBRF2545CT-E3/45, MBRF2045CT-E3/45, and MBRF1545CT-E3/45 provide reduced current ratings of 12.5 A, 10 A, and 7.5 A respectively. These parts maintain 45 V reverse voltage and are suitable only for applications with proportionally reduced current requirements. All three parts are active with extended temperature range (-65°C ~ 150°C or higher).

Frequently Asked Questions (FAQ)

Q: Can MBRF30L45CTHC0G be used as a direct replacement for MBRF30L45CT?

A: Yes. MBRF30L45CTHC0G is a parametric equivalent with identical electrical specifications: 45 V reverse voltage, 30 A average rectified current per diode, 740 mV forward voltage @ 30 A, and identical package configuration (TO-220-3 Full Pack, Isolated Tab). The primary difference is product status (active versus discontinued) and automotive-grade qualification (AEC-Q101).

Q: What is the difference between MBRF30L45CT and MBRF3045CT?

A: Both parts share 45 V reverse voltage, 30 A current rating, and identical packaging. MBRF3045CT exhibits higher forward voltage (820 mV @ 30 A versus 740 mV @ 30 A) and lower reverse leakage (200 µA @ 45 V versus 400 µA @ 45 V). Both parts are discontinued at DiGi Electronics.

Q: Can lower current-rated parts such as MBRF2545CT-E3/45 substitute for MBRF30L45CT?

A: Lower current-rated parts are suitable only for applications where the circuit current requirement does not exceed the substitute part's rating. MBRF2545CT-E3/45 is rated for 12.5 A maximum, making it unsuitable for circuits requiring the full 30 A capability of MBRF30L45CT. All lower current alternatives maintain 45 V reverse voltage compatibility.

Q: What is the significance of the automotive-grade qualification (AEC-Q101) in MBRF30L45CTHC0G?

A: AEC-Q101 qualification indicates the part meets automotive industry reliability and quality standards. This certification is relevant for applications in automotive and other high-reliability environments. The original MBRF30L45CT does not carry this qualification.

Q: Are all substitute parts ROHS3 compliant?

A: MBRF30L45CTHC0G, MBRF3045CT, MBRF3045CTP, MBRF30H45CT-E3/45, MBRF2545CT-E3/45, MBRF2045CT-E3/45, and MBRF1545CT-E3/45 are all ROHS3 compliant. MBRF2545CT/45 is RoHS non-compliant.

Q: What packaging options are available for substitute parts?

A: All substitute parts listed maintain the TO-220-3 Full Pack, Isolated Tab (ITO-220AB) package configuration, ensuring mechanical and thermal compatibility with the original MBRF30L45CT. Some parts are supplied in tube packaging (MBRF3045CTP, MBRF2545CT-E3/45, MBRF2045CT-E3/45, MBRF30H45CT-E3/45) while others are supplied without specified packaging designation.

Q: Which substitute part offers the best availability?

A: MBRF2045CT-E3/45 has the highest inventory with 4800 units in stock, followed by MBRF30H45CT-E3/45 with 4200 units. MBRF30L45CTHC0G (parametric equivalent) has 837 units in stock.

Q: Can MBRF30H45CT-E3/45 be used in applications requiring 30 A continuous current?

A: No. MBRF30H45CT-E3/45 is rated for 15 A average rectified current per diode, which is half the 30 A rating of MBRF30L45CT. This part is suitable only for applications with 15 A or lower current requirements.

Q: What is the operating temperature range difference between MBRF30L45CT and MBRF30H45CT-E3/45?

A: MBRF30L45CT operates from -55°C to 150°C junction temperature. MBRF30H45CT-E3/45 operates from -65°C to 175°C, providing 10°C lower minimum and 25°C higher maximum operating temperature.

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