MBR1635 Schottky Diode Equivalent & Substitute Parts

Part Overview

The MBR1635 is a 35V, 16A Schottky rectifier diode in TO-220AC packaging manufactured by Vishay General Semiconductor - Diodes Division. This component is classified as obsolete, indicating discontinuation from the original manufacturer. Equivalent and substitute parts are necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this diode specification.

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 ~ 150°C
Technology	Schottky

Substitute Part Grouping Explanation

Substitution of the MBR1635 is determined by the following critical parameters:

Electrical Compatibility Requirements:

Voltage - DC Reverse (Vr) rating must equal or exceed 35 V
Current - Average Rectified (Io) must equal or exceed 16 A
Voltage - Forward (Vf) characteristics must be compatible with circuit design
Reverse leakage current must not exceed specified limits
Fast recovery speed classification (≤ 500ns, > 200mA) must be maintained

Mechanical Compatibility Requirements:

Mounting type must be Through Hole
Package / Case must be TO-220-2 or equivalent TO-220AC supplier package
Physical dimensions must permit direct board-level substitution

Regulatory & Compliance Considerations:

RoHS compliance status
REACH compliance status
Product status (Active vs. Obsolete)

Parts are grouped into three categories: Parametric Equivalents (identical electrical and mechanical specifications), Upgrades (enhanced performance within compatible parameters), and Manufacturer-Recommended Alternatives (cross-manufacturer solutions with modified specifications).

Parameter Comparison

Parameter	MBR1635	MBR1635-E3/45	VS-MBR1635-M3	MBR1635G	STPS1545D
Manufacturer	Vishay	Vishay	Vishay	onsemi	STMicroelectronics
Voltage - DC Reverse (Vr) (Max)	35 V	35 V	35 V	35 V	45 V
Current - Average Rectified (Io)	16 A	16 A	16 A	16 A	15 A
Voltage - Forward (Vf) (Max) @ If	630 mV @ 16 A	630 mV @ 16 A	630 mV @ 16 A	630 mV @ 16 A	840 mV @ 30 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	200 µA @ 35 V	200 µA @ 35 V	200 µA @ 35 V	200 µA @ 35 V	200 µA @ 45 V
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
Operating Temperature - Junction	-65°C ~ 150°C	-65°C ~ 150°C	-65°C ~ 150°C	-65°C ~ 175°C	Max 175°C
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Parametric Equivalents (Direct Substitution):

MBR1635-E3/45 and VS-MBR1635-M3 are parametric equivalents of the MBR1635, offering identical electrical specifications and mechanical compatibility. Both parts are manufactured by Vishay General Semiconductor - Diodes Division and maintain the same voltage, current, and thermal characteristics. MBR1635-E3/45 is ROHS3 compliant with 3100 units in stock. VS-MBR1635-M3 is also ROHS3 compliant with 785 units in stock and includes specified capacitance data (1400pF @ 5V, 1MHz). Both parts are classified as Active products, ensuring long-term availability and supply chain stability.

Upgrade Option (Enhanced Performance):

MBR1635G, manufactured by onsemi under the SWITCHMODE™ series, provides identical electrical specifications with an extended operating temperature range (-65°C ~ 175°C versus -65°C ~ 150°C). This part is ROHS3 compliant and Active, with 1358 units in stock. The elevated maximum junction temperature provides thermal margin for applications operating near the upper temperature limit of the original MBR1635.

Manufacturer-Recommended Alternative (Cross-Manufacturer Solution):

STPS1545D, manufactured by STMicroelectronics, is a cross-manufacturer alternative with modified specifications. This part features a higher reverse voltage rating (45V versus 35V) and maintains the same fast recovery speed and reverse leakage characteristics. The current rating is 15A (versus 16A), representing a 6.25% reduction. The forward voltage specification differs (840 mV @ 30A versus 630 mV @ 16A), reflecting different measurement conditions. STPS1545D is ROHS3 compliant and Active, with 35200 units in stock, providing superior supply availability.

Compliance Considerations:

All substitute parts are ROHS3 compliant and REACH unaffected, addressing regulatory requirements for new designs. The original MBR1635 is RoHS non-compliant, making substitution necessary for applications subject to RoHS directives.

Frequently Asked Questions (FAQ)

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

A: Yes. MBR1635-E3/45 is a parametric equivalent with identical voltage (35V), current (16A), forward voltage (630 mV @ 16A), and thermal specifications (-65°C ~ 150°C). Both use TO-220-2 packaging. The primary difference is product status: MBR1635-E3/45 is Active while MBR1635 is Obsolete. Packaging is Tube format.

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

A: Both are parametric equivalents with identical electrical and thermal ratings. VS-MBR1635-M3 includes specified capacitance data (1400pF @ 5V, 1MHz) while MBR1635-E3/45 does not provide this parameter. Both are ROHS3 compliant and Active. VS-MBR1635-M3 has lower inventory (785 units) compared to MBR1635-E3/45 (3100 units).

Q: Can MBR1635G replace MBR1635 in all applications?

A: MBR1635G is electrically and mechanically compatible with identical voltage, current, and forward voltage specifications. The extended operating temperature range (-65°C ~ 175°C) provides additional thermal capability. Direct substitution is supported for all applications within the original MBR1635 operating envelope.

Q: Is STPS1545D a suitable replacement for MBR1635?

A: STPS1545D is a cross-manufacturer alternative with compatible fast recovery Schottky technology and TO-220-2 packaging. The 45V reverse voltage rating exceeds the 35V requirement, providing voltage margin. However, the current rating is 15A versus 16A, and forward voltage characteristics differ. STPS1545D is suitable for applications where the 15A current rating is acceptable and where the higher voltage rating does not create design conflicts.

Q: What are the packaging differences among these parts?

A: All parts use TO-220-2 package / case designation. MBR1635 and MBR1635G do not specify packaging format. MBR1635-E3/45 and VS-MBR1635-M3 are supplied in Tube packaging. STPS1545D is supplied in Tube packaging. All parts are Through Hole mounting type with identical physical dimensions.

Q: Are all substitute parts RoHS compliant?

A: MBR1635-E3/45, VS-MBR1635-M3, MBR1635G, and STPS1545D are all ROHS3 compliant. The original MBR1635 is RoHS non-compliant. Substitution with any of these parts satisfies RoHS regulatory requirements.

Q: Which substitute part offers the best supply availability?

A: STPS1545D offers the highest inventory level at 35200 units in stock. MBR1635-E3/45 provides 3100 units, MBR1635G provides 1358 units, and VS-MBR1635-M3 provides 785 units. Supply selection depends on project timeline and volume requirements.

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