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-220-2 package. Manufactured by onsemi under the SWITCHMODE™ series, this component is classified as obsolete. Due to its obsolete product status, equivalent and substitute parts from active manufacturers are necessary for new designs and ongoing production requirements. Substitute parts maintain electrical compatibility while offering improved availability and compliance certifications.

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	-65 to 175	°C
Technology	Schottky	—

Substitute Part Grouping Explanation

Substitution of the MBR735 is determined by the following critical parameters: Voltage - DC Reverse (Vr) rating, Current - Average Rectified (Io) rating, package type (Through Hole TO-220-2), and technology (Schottky). Substitute parts are grouped into two categories:

Direct Equivalents: Parts with identical or superior voltage and current ratings, matching package configuration, and compatible thermal characteristics. These parts maintain the same functional specifications as the MBR735.

Similar Substitutes: Parts with higher voltage ratings or current ratings that operate within the same package family. These parts provide enhanced performance margins and are electrically compatible in applications designed for the MBR735, provided the circuit topology accommodates the higher ratings.

The key parameters determining substitution eligibility are:

Voltage - DC Reverse (Vr) (Max): Must equal or exceed 35 V
Current - Average Rectified (Io): Must equal or exceed 7.5 A
Mounting Type: Through Hole
Package / Case: TO-220-2 or compatible TO-220 variant
Technology: Schottky
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [mV]	Package	Mounting Type	Temp Range [°C]	Product Status	RoHS Status
MBR735	onsemi	35	7.5	840 @ 15 A	TO-220-2	Through Hole	-65 to 175	Obsolete	Non-compliant
MBR735G	onsemi	35	7.5	840 @ 15 A	TO-220-2	Through Hole	-65 to 175	Obsolete	ROHS3 Compliant
MBR745-E3/45	Vishay General Semiconductor - Diodes Division	45	7.5	840 @ 15 A	TO-220-2	Through Hole	-65 to 175	Active	ROHS3 Compliant
STPS745D	STMicroelectronics	45	7.5	840 @ 15 A	TO-220-2	Through Hole	Max 175	Active	ROHS3 Compliant
DSS10-0045B	IXYS	45	10	510 @ 10 A	TO-220-2	Through Hole	-55 to 150	Active	ROHS3 Compliant

Engineering Selection Recommendations

MBR735G (onsemi): Direct equivalent to the MBR735 with identical electrical specifications and package configuration. MBR735G carries ROHS3 compliance certification, addressing regulatory requirements absent in the original MBR735. Product status remains obsolete; however, this variant provides improved compliance posture for legacy design updates.

MBR745-E3/45 (Vishay General Semiconductor - Diodes Division): Active product with 45 V reverse voltage rating and 7.5 A current rating. Maintains identical forward voltage characteristics and thermal operating range (-65°C to 175°C) as the MBR735. ROHS3 compliant. The elevated voltage rating provides additional design margin without compromising current capacity. Recommended for new designs and production transitions.

STPS745D (STMicroelectronics): Active product with 45 V reverse voltage rating and 7.5 A current rating. Electrical characteristics match MBR745-E3/45. ROHS3 compliant. Maximum junction temperature specified at 175°C. Highest inventory availability (16,973 pcs) among active substitutes. Suitable for applications requiring enhanced supply chain security.

DSS10-0045B (IXYS): Active product with 45 V reverse voltage rating and 10 A current rating. Provides enhanced current capacity beyond MBR735 specifications. Forward voltage reduced to 510 mV @ 10 A, indicating improved efficiency characteristics. Operating temperature range limited to -55°C to 150°C. ROHS3 compliant. Selection appropriate for applications requiring higher current margins or improved thermal efficiency, provided operating temperature requirements do not exceed 150°C.

Frequently Asked Questions (FAQ)

Q: Can MBR735G be used as a direct replacement for MBR735?

A: Yes. MBR735G maintains identical electrical specifications (35 V, 7.5 A, 840 mV forward voltage) and package configuration (TO-220-2, Through Hole). The primary difference is ROHS3 compliance certification in MBR735G versus non-compliance in MBR735. Both parts are classified as obsolete.

Q: What is the advantage of MBR745-E3/45 or STPS745D over MBR735?

A: Both parts are active products with 45 V reverse voltage ratings compared to MBR735's 35 V rating. The 10 V margin provides additional design safety. Both maintain 7.5 A current capacity and identical forward voltage characteristics (840 mV @ 15 A). Both carry ROHS3 compliance. Active product status ensures ongoing availability.

Q: Can DSS10-0045B replace MBR735 in all applications?

A: DSS10-0045B is electrically compatible with MBR735 for applications operating within -55°C to 150°C temperature range. The part provides superior current capacity (10 A versus 7.5 A) and lower forward voltage (510 mV @ 10 A versus 840 mV @ 15 A). However, applications requiring operation below -55°C or above 150°C require alternative selection.

Q: Are all substitute parts in the same package?

A: All substitute parts use Through Hole mounting in TO-220-2 or compatible TO-220AC package variants. Physical footprint compatibility is maintained across all listed substitutes.

Q: What is the difference between TO-220-2 and TO-220AC package designations?

A: Both designations refer to the same physical Through Hole TO-220 package with two leads. TO-220AC is a supplier-specific package designation. Mechanical and electrical compatibility is maintained.

Q: Which substitute offers the best compliance profile?

A: MBR745-E3/45, STPS745D, and DSS10-0045B all carry ROHS3 compliance certification. MBR735G also carries ROHS3 compliance but retains obsolete product status. For new designs, MBR745-E3/45 or STPS745D are recommended due to active product status combined with full compliance certification.

Q: What is the inventory status of available substitutes?

A: STPS745D (STMicroelectronics) offers the highest inventory availability at 16,973 pcs. MBR735G (onsemi) provides 6,980 pcs. MBR745-E3/45 (Vishay) provides 3,200 pcs. DSS10-0045B (IXYS) provides 1,014 pcs. Inventory levels support production requirements across all substitute options.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message