MBRF2045CTHE3/45 Equivalent & Substitute Parts

Part Overview

The MBRF2045CTHE3/45 is a Schottky diode array manufactured by Vishay General Semiconductor - Diodes Division. This component features a 1 Pair Common Cathode configuration rated for 45 V DC reverse voltage and 10 A average rectified current per diode. The device is packaged in a TO-220-3 Full Pack with isolated tab (ITO-220AB) for through-hole mounting applications.

The MBRF2045CTHE3/45 maintains Active product status and carries AEC-Q101 automotive qualification with ROHS3 compliance. Equivalent and substitute parts are identified to address application requirements, inventory availability, or specific performance characteristics within the allowed electrical and mechanical parameter ranges.

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)	10 A
Voltage - Forward (Vf) (Max) @ If	650 mV @ 10 A
Speed	Fast Recovery ≤ 500 ns, > 200 mA (Io)
Current - Reverse Leakage @ Vr	100 µA @ 45 V
Operating Temperature - Junction	-65°C ~ 150°C
Mounting Type	Through Hole
Package / Case	TO-220-3 Full Pack, Isolated Tab
RoHS Status	ROHS3 Compliant
Grade	Automotive
Qualification	AEC-Q101

Substitute Part Grouping Explanation

Substitute parts for the MBRF2045CTHE3/45 are qualified based on the following critical parameters:

Electrical Compatibility Criteria:

Diode Configuration: 1 Pair Common Cathode
Technology: Schottky
Voltage - DC Reverse (Vr) (Max): 45 V
Current - Average Rectified (Io) (per Diode): 10 A or higher
Speed: Fast Recovery ≤ 500 ns, > 200 mA (Io)
Mounting Type: Through Hole

Mechanical Compatibility Criteria:

Package / Case: TO-220-3 Full Pack variants
Supplier Device Package: ITO-220AB, TO-220FP, or equivalent through-hole TO-220 configurations

Compliance Criteria:

RoHS Status: ROHS3 Compliant
REACH Status: REACH Unaffected

Substitute parts may differ in forward voltage characteristics, reverse leakage current, maximum junction temperature, and product status, provided they maintain the core electrical ratings and mechanical form factor. Parts with higher current ratings (12.5 A) are included as they satisfy the minimum 10 A requirement and provide design margin.

Parameter Comparison

Parameter	MBRF2045CTHE3/45 (Main)	MBRF2045CTG	MBRF2545CTG	STPS2045CFP
Manufacturer	Vishay General Semiconductor	onsemi	onsemi	STMicroelectronics
Diode Configuration	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode
Technology	Schottky	Schottky	Schottky	Schottky
Voltage - DC Reverse (Vr) (Max)	45 V	45 V	45 V	45 V
Current - Average Rectified (Io) (per Diode)	10 A	10 A	12.5 A	10 A
Voltage - Forward (Vf) (Max) @ If	650 mV @ 10 A	570 mV @ 10 A	700 mV @ 12.5 A	570 mV @ 10 A
Speed	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)
Current - Reverse Leakage @ Vr	100 µA @ 45 V	100 µA @ 45 V	200 µA @ 45 V	100 µA @ 45 V
Operating Temperature - Junction	-65°C ~ 150°C	-65°C ~ 175°C	-65°C ~ 175°C	Max 175°C
Mounting Type	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
Product Status	Active	Obsolete	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

MBRF2045CTG (onsemi)

The MBRF2045CTG is electrically equivalent to the MBRF2045CTHE3/45 with identical voltage and current ratings. This part offers improved forward voltage characteristics (570 mV vs. 650 mV @ 10 A) and extended maximum junction temperature (-65°C ~ 175°C vs. -65°C ~ 150°C). However, the MBRF2045CTG carries Obsolete product status. Selection of this part is appropriate only when existing inventory must be consumed or when legacy system compatibility is required. New designs should not incorporate this part.

MBRF2545CTG (onsemi) - Manufacturer Recommended

The MBRF2545CTG is the manufacturer-recommended substitute. This part maintains the 45 V reverse voltage rating while providing increased current capacity (12.5 A vs. 10 A per diode). The MBRF2545CTG carries Active product status and is qualified for extended temperature operation (-65°C ~ 175°C). The higher current rating provides design margin for thermal and electrical stress. Forward voltage is specified at the higher current rating (700 mV @ 12.5 A). Reverse leakage current is doubled (200 µA @ 45 V) compared to the main part. This part is suitable for new designs and applications requiring enhanced current handling.

STPS2045CFP (STMicroelectronics) - Manufacturer Recommended

The STPS2045CFP provides direct electrical equivalence to the MBRF2045CTHE3/45 with identical 45 V and 10 A ratings. This part features improved forward voltage performance (570 mV vs. 650 mV @ 10 A) and carries Active product status. Maximum junction temperature is specified at 175°C. The STPS2045CFP is suitable for new designs and applications requiring direct replacement with enhanced performance characteristics.

Frequently Asked Questions (FAQ)

Q: Can the MBRF2045CTG be used as a direct replacement for the MBRF2045CTHE3/45?

A: The MBRF2045CTG is electrically compatible with identical voltage and current ratings. However, this part carries Obsolete product status. Direct replacement is possible for existing applications, but new designs should utilize active parts such as MBRF2545CTG or STPS2045CFP.

Q: What is the difference between the MBRF2545CTG and MBRF2045CTHE3/45?

A: The MBRF2545CTG provides higher current capacity (12.5 A vs. 10 A per diode) while maintaining the same 45 V reverse voltage rating. Both parts share identical diode configuration, technology, and mounting type. The MBRF2545CTG is suitable for applications requiring additional current margin or thermal headroom.

Q: Are all substitute parts compatible with the same PCB footprint?

A: All substitute parts utilize TO-220-3 Full Pack through-hole packaging. The MBRF2045CTHE3/45 features an isolated tab variant (ITO-220AB), while substitute parts use standard TO-220FP packaging. PCB footprints designed for isolated tab configurations may require verification for standard TO-220FP compatibility. Pin assignments remain consistent across all parts.

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

A: Forward voltage (Vf) differences affect power dissipation and thermal performance. The MBRF2045CTHE3/45 specifies 650 mV @ 10 A, while MBRF2045CTG and STPS2045CFP specify 570 mV @ 10 A. Lower forward voltage reduces power loss and heat generation. The MBRF2545CTG specifies 700 mV @ 12.5 A, which reflects measurement at higher current. Selection should consider application thermal requirements and power budget constraints.

Q: Can the STPS2045CFP be used in automotive applications?

A: The STPS2045CFP carries ROHS3 compliance and REACH Unaffected status. However, automotive qualification status is not specified in the provided data. The main part MBRF2045CTHE3/45 carries AEC-Q101 automotive qualification. Applications requiring automotive qualification should verify STPS2045CFP qualification status with STMicroelectronics or select the MBRF2545CTG, which maintains onsemi SWITCHMODE™ series designation.

Q: What is the impact of reverse leakage current differences?

A: The MBRF2045CTHE3/45 and STPS2045CFP specify 100 µA @ 45 V reverse leakage, while MBRF2545CTG specifies 200 µA @ 45 V. Higher reverse leakage increases standby current and may affect circuit performance in low-power or precision applications. Selection should consider application sensitivity to leakage current.

Q: Are moisture sensitivity levels equivalent across all substitute parts?

A: The MBRF2045CTHE3/45 and STPS2045CFP specify MSL 1 (Unlimited). The MBRF2545CTG specifies MSL as Not Applicable. All parts are suitable for standard handling and storage conditions without special moisture control requirements.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message