MBR1635 Equivalent & Substitute Parts

Part Overview

The MBR1635 is a Schottky rectifier diode rated for 35 V DC reverse voltage and 16 A average rectified current in a Through Hole TO-220-2 package. This component is classified as obsolete by the manufacturer onsemi. Identification of equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for new production runs and field replacements.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	35 V
Current - Average Rectified (Io)	16 A
Voltage - Forward (Vf) (Max) @ If	630 mV @ 16 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	200 µA @ 35 V
Mounting Type	Through Hole
Package / Case	TO-220-2
Operating Temperature - Junction	-65°C ~ 175°C
Technology	Schottky
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution of the MBR1635 is determined by the following critical parameters: reverse voltage rating (Vr), average rectified current (Io), forward voltage drop (Vf), reverse leakage current, package type, and operating temperature range. Parts are classified into two categories:

Direct Equivalents: Parts that maintain identical electrical specifications (35 V, 16 A) and package configuration. These parts are pin-compatible and functionally interchangeable without circuit modification.

Similar Substitutes: Parts that exceed the original specifications in reverse voltage rating (45 V) or have minor variations in current rating (15 A vs. 16 A). These parts operate within the same application envelope but provide enhanced voltage margin or different thermal characteristics. Similar substitutes require verification that the higher voltage rating does not introduce unintended circuit behavior.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io	Vf (Max) @ If	Reverse Leakage @ Vr	Package	Temp Range (Tj)	Product Status	RoHS Status
MBR1635	onsemi	35 V	16 A	630 mV @ 16 A	200 µA @ 35 V	TO-220-2	-65°C ~ 175°C	Obsolete	RoHS non-compliant
MBR1635G	onsemi	35 V	16 A	630 mV @ 16 A	200 µA @ 35 V	TO-220-2	-65°C ~ 175°C	Active	ROHS3 Compliant
MBR1635-E3/45	Vishay General Semiconductor - Diodes Division	35 V	16 A	630 mV @ 16 A	200 µA @ 35 V	TO-220-2	-65°C ~ 150°C	Active	ROHS3 Compliant
VS-MBR1635-M3	Vishay General Semiconductor - Diodes Division	35 V	16 A	630 mV @ 16 A	200 µA @ 35 V	TO-220-2	-65°C ~ 150°C	Active	ROHS3 Compliant
DSS16-0045B	IXYS	45 V	16 A	480 mV @ 15 A	10 mA @ 45 V	TO-220-2	-55°C ~ 150°C	Active	ROHS3 Compliant
STPS1545D	STMicroelectronics	45 V	15 A	840 mV @ 30 A	200 µA @ 45 V	TO-220-2	-55°C ~ 175°C	Active	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (No Circuit Modification Required):

MBR1635G is the primary direct equivalent. It maintains identical electrical specifications and package configuration as the obsolete MBR1635 while offering Active product status and ROHS3 compliance. This part is the preferred choice for applications requiring exact electrical and thermal performance matching.

MBR1635-E3/45 and VS-MBR1635-M3 are functionally equivalent alternatives from Vishay. Both maintain the 35 V / 16 A rating and identical forward voltage characteristics. These parts are suitable for direct substitution with the caveat that the maximum operating temperature is reduced to 150°C compared to the original 175°C specification. Both parts carry ROHS3 compliance and Active product status.

For Enhanced Voltage Margin Applications:

DSS16-0045B (IXYS) and STPS1545D (STMicroelectronics) provide 45 V reverse voltage rating, exceeding the original 35 V specification. These parts are suitable for applications where additional voltage headroom is beneficial. Both parts are ROHS3 compliant and Active. The DSS16-0045B maintains the 16 A current rating with lower forward voltage (480 mV @ 15 A). The STPS1545D operates at 15 A with higher forward voltage (840 mV @ 30 A) and extended maximum junction temperature to 175°C.

All substitute parts maintain Fast Recovery switching characteristics (≤ 500ns, > 200mA) and Through Hole mounting in TO-220-2 package configuration, ensuring mechanical and thermal compatibility with existing PCB designs.

Frequently Asked Questions (FAQ)

Q: Can MBR1635G be used as a direct replacement for the obsolete MBR1635?

A: Yes. MBR1635G is a direct equivalent with identical electrical specifications (35 V, 16 A, 630 mV forward voltage) and package configuration. The primary differences are Active product status and ROHS3 compliance. No circuit modifications are required.

Q: What is the difference between MBR1635-E3/45 and VS-MBR1635-M3?

A: Both parts are manufactured by Vishay and maintain identical electrical specifications (35 V, 16 A, 630 mV forward voltage). The primary difference is packaging: MBR1635-E3/45 is supplied in Tube packaging while VS-MBR1635-M3 is also supplied in Tube. Both are ROHS3 compliant and Active. The maximum operating junction temperature for both is -65°C ~ 150°C, which is 25°C lower than the original MBR1635 specification.

Q: Can DSS16-0045B or STPS1545D be used in place of MBR1635?

A: These parts are similar substitutes with higher reverse voltage ratings (45 V vs. 35 V). They are mechanically compatible (TO-220-2 package) and electrically suitable for applications where the circuit can tolerate the voltage rating difference. DSS16-0045B maintains 16 A current rating with lower forward voltage. STPS1545D operates at 15 A with higher forward voltage. Circuit validation is required to confirm suitability for specific applications.

Q: What is the impact of the reduced maximum junction temperature in Vishay alternatives?

A: MBR1635-E3/45 and VS-MBR1635-M3 specify a maximum junction temperature of 150°C compared to 175°C for the original MBR1635. This 25°C reduction may impact thermal design margins in high-temperature applications. Thermal analysis should be performed to confirm adequate derating in the target application environment.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed (MBR1635G, MBR1635-E3/45, VS-MBR1635-M3, DSS16-0045B, and STPS1545D) carry ROHS3 compliance certification. The original MBR1635 is RoHS non-compliant. This compliance status is relevant for applications subject to RoHS regulatory requirements.

Q: What is the difference in reverse leakage current between MBR1635 and DSS16-0045B?

A: The original MBR1635 specifies 200 µA reverse leakage at 35 V. The DSS16-0045B specifies 10 mA reverse leakage at 45 V. This 50-fold increase in leakage current at higher voltage may impact circuit performance in applications sensitive to leakage, such as precision analog circuits or low-power standby modes.

Q: Are the substitute parts pin-compatible with the original MBR1635?

A: Yes. All substitute parts use the TO-220-2 package configuration with identical pin assignments. Physical and electrical pin compatibility is maintained across all listed alternatives, enabling direct PCB mounting without layout modifications.

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