MBR735 Equivalent & Substitute Parts

Part Overview

The MBR735 is a Schottky rectifier diode rated for 35 V DC reverse voltage and 7.5 A average rectified current in a Through Hole TO-220AC package. Manufactured by Diodes Incorporated, this component is classified as Obsolete product status. Due to its obsolete classification, equivalent and substitute parts from active manufacturers are necessary for new designs and ongoing production requirements. Substitute options are available with enhanced electrical characteristics or from alternative manufacturers maintaining active product status.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	35	V
Current - Average Rectified (Io)	7.5	A
Voltage - Forward (Vf) (Max) @ If	840 mV @ 15 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Current - Reverse Leakage @ Vr	100	µA @ 35 V
Mounting Type	Through Hole	—
Package / Case	TO-220-2	—
Operating Temperature - Junction	-55 to 150	°C
Technology	Schottky	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the MBR735 are categorized based on the following substitution criteria:

Manufacturer Recommended Substitutes maintain or exceed the electrical specifications of the original part while offering active product status:

MBR1635-E3/45 (Vishay General Semiconductor): Identical reverse voltage (35 V) with increased current rating (16 A vs. 7.5 A). Forward voltage reduced to 630 mV @ 16 A. Extended operating temperature range (-65°C to 150°C). Active product status.
STPS745D (STMicroelectronics): Identical current rating (7.5 A) with elevated reverse voltage (45 V vs. 35 V). Forward voltage maintained at 840 mV @ 15 A. Maximum junction temperature 175°C. Active product status.

Parametric Equivalents provide identical electrical specifications with variations in mounting technology or manufacturer:

MBR735 (Solid State Inc.): Identical voltage and current ratings with Surface Mount DO-220 package instead of Through Hole TO-220AC.
MBR735 C0G (Taiwan Semiconductor Corporation): Identical specifications to original MBR735 in Through Hole TO-220AC package. Active product status.
MBR735HC0G (Taiwan Semiconductor Corporation): Identical specifications with Automotive grade qualification (AEC-Q101). Through Hole TO-220AC package. Active product status.

Parameter Comparison

Parameter	MBR735 (Diodes Inc.)	MBR1635-E3/45 (Vishay)	STPS745D (STMicroelectronics)	MBR735 C0G (Taiwan Semi.)	MBR735HC0G (Taiwan Semi.)
Voltage - DC Reverse (Vr) (Max)	35 V	35 V	45 V	35 V	35 V
Current - Average Rectified (Io)	7.5 A	16 A	7.5 A	7.5 A	7.5 A
Voltage - Forward (Vf) (Max) @ If	840 mV @ 15 A	630 mV @ 16 A	840 mV @ 15 A	840 mV @ 15 A	840 mV @ 15 A
Speed	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA
Current - Reverse Leakage @ Vr	100 µA @ 35 V	200 µA @ 35 V	100 µA @ 45 V	100 µA @ 35 V	100 µA @ 35 V
Operating Temperature - Junction	-55 to 150°C	-65 to 150°C	Max 175°C	-55 to 150°C	-55 to 150°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	TO-220-2	TO-220-2	TO-220-2	TO-220-2	TO-220-2
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Automotive Grade	—	—	—	—	AEC-Q101

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications):

Select MBR735 C0G or MBR735HC0G from Taiwan Semiconductor Corporation. Both maintain identical electrical parameters (35 V, 7.5 A, 840 mV forward voltage) and Through Hole TO-220AC packaging. Both are Active product status. The MBR735HC0G variant includes AEC-Q101 automotive qualification for applications requiring automotive-grade components.

For Enhanced Current Capacity:

Select MBR1635-E3/45 from Vishay General Semiconductor when circuit design permits higher current handling (16 A vs. 7.5 A). This part maintains 35 V reverse voltage rating with improved forward voltage characteristics (630 mV @ 16 A). Extended operating temperature range (-65°C to 150°C) provides additional thermal margin. Active product status with ROHS3 compliance.

For Elevated Voltage Margin:

Select STPS745D from STMicroelectronics when higher reverse voltage rating (45 V vs. 35 V) is required. Current rating remains at 7.5 A with identical forward voltage (840 mV @ 15 A). Maximum junction temperature of 175°C exceeds the original specification. Active product status with ROHS3 compliance.

All substitute parts maintain Fast Recovery Schottky technology (≤ 500ns), ROHS3 compliance, and Through Hole TO-220AC mounting compatibility with the original MBR735.

Frequently Asked Questions (FAQ)

Q: Can MBR1635-E3/45 be used as a direct replacement for MBR735?

A: MBR1635-E3/45 is electrically compatible for applications operating at or below 7.5 A. The higher current rating (16 A) and lower forward voltage (630 mV @ 16 A) provide enhanced performance. The identical 35 V reverse voltage rating and TO-220AC package enable direct PCB substitution. Verify circuit design does not depend on the original forward voltage specification.

Q: What is the difference between MBR735 C0G and MBR735HC0G?

A: Both parts are parametrically identical with 35 V, 7.5 A ratings and TO-220AC packaging. MBR735HC0G includes AEC-Q101 automotive qualification and automotive-grade designation. Select MBR735HC0G for automotive applications or systems requiring automotive-qualified components.

Q: Is STPS745D suitable for circuits designed for MBR735?

A: STPS745D is suitable when the circuit operates at or below 7.5 A and 35 V. The elevated reverse voltage rating (45 V) provides additional safety margin. Forward voltage remains at 840 mV @ 15 A, matching the original specification. The higher maximum junction temperature (175°C) offers improved thermal performance. Verify the circuit does not depend on the original 35 V voltage rating as a design limit.

Q: Why is the MBR735 from Solid State Inc. listed as a parametric equivalent despite different packaging?

A: The Solid State Inc. MBR735 maintains identical electrical specifications (35 V, 7.5 A, 840 mV forward voltage) but uses Surface Mount DO-220 packaging instead of Through Hole TO-220AC. This part is suitable only for designs using surface mount assembly processes. PCB layout and assembly method must be compatible with DO-220 surface mount technology.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts (MBR1635-E3/45, STPS745D, MBR735 C0G, and MBR735HC0G) are ROHS3 compliant, matching the original MBR735 compliance status.

Q: What determines whether a part can substitute for MBR735?

A: Substitution compatibility is determined by: (1) Reverse voltage rating equal to or greater than 35 V, (2) Average rectified current rating equal to or greater than 7.5 A, (3) Fast Recovery Schottky technology, (4) Through Hole TO-220AC package (for direct PCB replacement), and (5) Operating temperature range encompassing the application requirements. Forward voltage and reverse leakage current must be evaluated against circuit design specifications.

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