MBR1650 Equivalent & Substitute Parts

Part Overview

The MBR1650 is a Schottky rectifier diode rated for 50 V DC reverse voltage and 16 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 with active product status are necessary for new designs and ongoing production requirements. Suitable alternatives maintain the same package type and thermal characteristics while offering comparable or enhanced electrical performance.

Substiute Parts

MBR1650

Diodes IncorporatedIn Stock: 1416MBR1650 Datasheet

Current PartRFQ

DSS10-0045A

IXYSIn Stock: 771DSS10-0045A Datasheet

MFR RecommendedRFQ

MBR1045

Taiwan Semiconductor CorporationIn Stock: 4256MBR1045 Datasheet

MFR RecommendedRFQ

MBR1645-BP

Micro Commercial CoIn Stock: 1023MBR1645-BP Datasheet

MFR RecommendedRFQ

MBR1645G

onsemiIn Stock: 17047MBR1645G Datasheet

MFR RecommendedRFQ

VT2045BP-M3/4W

Vishay General Semiconductor - Diodes DivisionIn Stock: 9182VT2045BP-M3/4W Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MBR1650 is determined by the following critical parameters: voltage rating (Vr), current rating (Io), package type (TO-220-2 or TO-220AC), mounting method (Through Hole), and technology classification (Schottky).

The substitute parts are grouped into two categories based on electrical performance:

Category 1: Reduced Voltage Rating (45 V) with Maintained or Increased Current Capacity These parts operate at 45 V maximum reverse voltage, which is lower than the MBR1650's 50 V rating. They are suitable for applications where the circuit voltage does not exceed 45 V. This category includes MBR1045, DSS10-0045A, MBR1645-BP, and MBR1645G.

Category 2: Maintained Voltage Rating (45 V) with Enhanced Current Capacity The VT2045BP-M3/4W operates at 45 V with a 20 A current rating, exceeding the MBR1650's 16 A specification. This part is applicable in circuits requiring higher current handling at reduced voltage levels.

All substitute parts maintain Schottky technology, Through Hole mounting, and TO-220-2 or TO-220AC package compatibility. All listed substitutes are Active product status with ROHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement in 45 V or Lower Circuits:

MBR1645G (onsemi) is the primary substitute when voltage derating to 45 V is acceptable. This part maintains the 16 A current rating of the MBR1650, offers improved forward voltage characteristics (630 mV vs. 750 mV), and provides an extended operating temperature range (-65°C ~ 175°C). Product status is Active with ROHS3 compliance and REACH Unaffected designation. Inventory availability is substantial at 17,020 pieces.

MBR1645-BP (Micro Commercial Co) provides equivalent 45 V / 16 A specifications with Active product status. This option is available in Bulk packaging with 979 pieces in stock.

For Reduced Current Applications:

MBR1045 (Taiwan Semiconductor Corporation) and DSS10-0045A (IXYS) both operate at 45 V with 10 A current rating. MBR1045 offers superior reverse leakage characteristics (100 µA vs. 300 µA) and maintains Active product status with 4,214 pieces available. DSS10-0045A provides the lowest forward voltage (680 mV @ 10 A) among 10 A options with 725 pieces in stock.

For Enhanced Current Capacity:

VT2045BP-M3/4W (Vishay General Semiconductor) delivers 20 A at 45 V, exceeding the MBR1650's current specification. This TMBS® series component features improved forward voltage (660 mV @ 20 A) and extended maximum junction temperature (200°C). Product status is Active with ROHS3 compliance and 9,158 pieces available.

All substitute parts maintain Through Hole mounting in TO-220-2 or TO-220AC packages, ensuring mechanical compatibility with existing PCB layouts.

Frequently Asked Questions (FAQ)

Q: Can the MBR1650 be directly replaced with a 45 V rated substitute in a 50 V circuit?

A: No. Direct replacement in circuits designed for 50 V operation requires a substitute with minimum 50 V voltage rating. The MBR1650's 50 V specification must be matched or exceeded. Substitutes rated at 45 V are suitable only for circuits where the maximum applied voltage does not exceed 45 V.

Q: What is the primary difference between MBR1645G and MBR1645-BP?

A: Both parts share identical electrical specifications: 45 V voltage rating and 16 A current capacity. The primary differences are manufacturer (onsemi vs. Micro Commercial Co), packaging format (Tube vs. Bulk), and inventory availability (17,020 vs. 979 pieces). Electrical performance and package type (TO-220-2) are equivalent.

Q: Is the VT2045BP-M3/4W suitable as a substitute if the circuit only requires 16 A?

A: Yes. The VT2045BP-M3/4W is rated for 20 A maximum current, which exceeds the 16 A requirement. Operating at lower than maximum current rating does not degrade component performance. This part offers improved forward voltage characteristics and extended temperature range compared to the MBR1650.

Q: What compliance certifications are common across all substitute parts?

A: All substitute parts listed are ROHS3 compliant and maintain Schottky technology classification. All operate with Fast Recovery speed characteristics (≤ 500ns, > 200mA). REACH status varies by manufacturer: REACH Unaffected for onsemi, IXYS, Taiwan Semiconductor Corporation, Micro Commercial Co, and Vishay; REACH Affected for the original Diodes Incorporated MBR1650.

Q: Are there package compatibility concerns when substituting the MBR1650?

A: No. All substitute parts maintain Through Hole mounting in TO-220-2 or TO-220AC packages. These packages are mechanically and electrically interchangeable on standard PCB layouts designed for TO-220 components. Pin configuration and thermal characteristics remain consistent across all listed alternatives.

Q: How does forward voltage affect substitute selection?

A: Forward voltage (Vf) determines power dissipation and heat generation during operation. The MBR1650 specifies 750 mV @ 16 A. Substitutes with lower forward voltage (MBR1645G at 630 mV @ 16 A, VT2045BP-M3/4W at 660 mV @ 20 A) generate less heat and improve circuit efficiency. Higher forward voltage increases power loss and thermal load. Selection depends on thermal design requirements and efficiency specifications of the application.

Q: What is the significance of reverse leakage current in substitute selection?

A: Reverse leakage current affects standby power consumption and circuit performance during reverse bias conditions. The MBR1650 specifies 1 mA @ 50 V. Substitutes show varying leakage: MBR1045 at 100 µA @ 45 V (lower), MBR1645G at 200 µA @ 45 V (lower), and VT2045BP-M3/4W at 2 mA @ 45 V (higher). Lower leakage is preferable for low-power applications; higher leakage may be acceptable in high-current applications where standby losses are negligible.

Q: Can the MBR1045 or DSS10-0045A be used if the circuit requires 16 A?

A: No. Both MBR1045 and DSS10-0045A are rated for maximum 10 A average rectified current. Operating these parts at 16 A exceeds their current specification and violates component ratings. Use only parts rated for 16 A or higher: MBR1645-BP, MBR1645G, or VT2045BP-M3/4W.

Q: What is the operating temperature range consideration for substitute selection?

A: The MBR1650 operates from -65°C to 150°C junction temperature. Substitutes offer varying ranges: DSS10-0045A and MBR1045 (-55°C ~ 150°C), MBR1645-BP (-55°C ~ 150°C), MBR1645G (-65°C ~ 175°C), and VT2045BP-M3/4W (max 200°C). Selection depends on application temperature requirements. Extended range parts (MBR1645G, VT2045BP-M3/4W) provide greater thermal margin in extreme environment applications.