MBR1640 Equivalent & Substitute Parts

Part Overview

The MBR1640 is a Schottky rectifier diode manufactured by Diodes Incorporated, rated for 40 V DC reverse voltage and 16 A average rectified current in a Through Hole TO-220AC package. This component is classified as Obsolete, necessitating identification of equivalent substitute parts for ongoing design requirements and procurement needs. Substitute parts must maintain electrical compatibility across voltage, current, and thermal specifications while accommodating available packaging and manufacturer options.

Substiute Parts

MBR1640

Diodes IncorporatedIn Stock: 2945MBR1640 Datasheet

Current PartRFQ

MBR1645-BP

Micro Commercial CoIn Stock: 1023MBR1645-BP Datasheet

MFR RecommendedRFQ

MBR1645G

onsemiIn Stock: 17047MBR1645G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MBR1640 are qualified based on the following electrical and mechanical parameters:

Voltage Compatibility: Substitute parts must have a DC reverse voltage rating (Vr) equal to or greater than 40 V. Both substitute parts (MBR1645-BP and MBR1645G) are rated at 45 V, providing voltage margin above the original specification.

Current Rating: Substitute parts must support the same average rectified current of 16 A to maintain load-carrying capacity in the application circuit.

Technology and Speed: Both substitutes employ Schottky technology with Fast Recovery characteristics (≤ 500ns, > 200mA), matching the original part's switching performance requirements.

Reverse Leakage: Substitute parts maintain the same reverse leakage specification of 200 µA at their respective rated voltages, ensuring equivalent leakage behavior.

Package and Mounting: Substitute parts utilize the same Through Hole mounting type and TO-220-2 package configuration, enabling direct mechanical and electrical interchange without PCB redesign.

Forward Voltage: The MBR1645G maintains the same forward voltage specification (630 mV @ 16 A) as the original part, ensuring equivalent power dissipation characteristics.

Parameter Comparison

Engineering Selection Recommendations

MBR1645G (onsemi) is the primary substitute for the MBR1640. This part maintains full electrical equivalence with identical forward voltage characteristics (630 mV @ 16 A), matching reverse leakage specifications, and identical fast recovery speed. The MBR1645G offers an extended operating temperature range (-65°C ~ 175°C) compared to the original part, providing additional thermal margin. This part is Active in product status with ROHS3 compliance and is available in high inventory (17,020 pcs). The MBR1645G is supplied in Tube packaging.

MBR1645-BP (Micro Commercial Co) serves as a secondary substitute option. This part meets all core electrical requirements with 45 V reverse voltage rating and 16 A current capacity. The MBR1645-BP maintains equivalent reverse leakage and capacitance specifications. However, the operating temperature range is narrower (-55°C ~ 150°C) compared to both the original part and the MBR1645G. This part is Active in product status and is supplied in Bulk packaging with 979 pcs available inventory.

Both substitute parts are classified as REACH Unaffected and carry EAR99 ECCN designation, matching the regulatory profile of the original component.

Frequently Asked Questions (FAQ)

Q: Can the MBR1645-BP and MBR1645G be used interchangeably with the MBR1640?

A: Both parts are electrically and mechanically compatible with the MBR1640 within the specified parameters. Both maintain 16 A current rating, employ Schottky technology with identical fast recovery characteristics, and use the same TO-220-2 Through Hole package. The higher voltage ratings (45 V vs. 40 V) provide additional design margin without affecting circuit operation.

Q: What is the difference between the two substitute parts?

A: The primary differences are manufacturer, operating temperature range, and packaging format. The MBR1645G (onsemi) offers a wider temperature range (-65°C ~ 175°C) and includes specified forward voltage data (630 mV @ 16 A). The MBR1645-BP (Micro Commercial Co) has a narrower temperature range (-55°C ~ 150°C) and is supplied in Bulk packaging rather than Tube. Both parts maintain identical current and voltage ratings.

Q: Does the higher voltage rating (45 V) of the substitutes affect circuit performance?

A: No. The higher reverse voltage rating of the substitute parts (45 V vs. 40 V) does not negatively affect circuit performance. This provides additional voltage margin and is a standard practice in component substitution. The forward voltage drop and reverse leakage characteristics remain equivalent to the original part.

Q: Are there temperature considerations when selecting between the two substitutes?

A: Yes. If the application operates at temperatures below -55°C or above 150°C, the MBR1645G is required due to its extended operating range (-65°C ~ 175°C). For applications within -55°C to 150°C, both parts are suitable. The MBR1645G also provides additional thermal headroom at the upper temperature limit (175°C vs. 150°C).

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

A: The MBR1645-BP is supplied in Bulk packaging, while the MBR1645G is supplied in Tube packaging. Both are Through Hole components in TO-220-2 package configuration. Packaging selection depends on procurement and assembly process requirements.

Q: Are both substitute parts RoHS compliant?

A: The MBR1645G is explicitly ROHS3 compliant, matching the original MBR1640. The MBR1645-BP RoHS status is not specified in the available data. For applications requiring confirmed RoHS3 compliance, the MBR1645G is the recommended choice.