MBR40250 Equivalent & Substitute Parts

Part Overview

The MBR40250 is a Schottky rectifier diode rated for 250 V DC reverse voltage and 40 A average rectified current in a TO-220-2 through-hole package. This component is classified as obsolete, necessitating identification of active equivalent alternatives for new designs and production continuity. The MBR40250 belongs to the onsemi SWITCHMODE™ series and is designed for fast recovery applications with a reverse recovery time of 35 nanoseconds.

Substiute Parts

MBR40250

onsemiIn Stock: 7454MBR40250 Datasheet

Current PartRFQ

MBR40250G

onsemiIn Stock: 16791MBR40250G Datasheet

DirectRFQ

MBR40250TG

onsemiIn Stock: 22939MBR40250TG Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MBR40250 is determined by equivalence in the following electrical and mechanical parameters:

Critical Substitution Parameters:

• Voltage - DC Reverse (Vr) (Max): 250 V
• Current - Average Rectified (Io): 40 A
• Voltage - Forward (Vf) (Max) @ If: 970 mV @ 40 A
• Reverse Recovery Time (trr): 35 ns
• Current - Reverse Leakage @ Vr: 30 µA @ 250 V
• Capacitance @ Vr, F: 500 pF @ 5V, 1MHz
• Operating Temperature - Junction: -65°C to 150°C
• Mounting Type: Through Hole
• Technology: Schottky

Packaging Considerations: The MBR40250 is supplied in TO-220-2 package configuration. Substitute parts maintain identical electrical specifications and mounting type. Package variant designations (TO-220-2 versus TO-220-3) reflect supplier device package classifications but do not affect functional equivalence when electrical parameters remain constant.

Parameter Comparison

Engineering Selection Recommendations

MBR40250G is the direct equivalent substitute for the obsolete MBR40250. Both parts share identical electrical specifications, mounting configuration (TO-220-2), and thermal operating range. The MBR40250G is currently in active production status with ROHS3 compliance certification, making it suitable for new designs and production applications requiring regulatory adherence.

MBR40250TG provides parametric equivalence with all electrical characteristics matching the original MBR40250. This part is also in active production with ROHS3 compliance. The package designation difference (TO-220-3 versus TO-220-2) reflects supplier device package classification; however, both maintain through-hole mounting compatibility and identical functional performance in circuit applications.

For applications requiring component obsolescence mitigation, either MBR40250G or MBR40250TG serves as a direct functional replacement. Selection between these two active alternatives depends on packaging availability and supplier inventory requirements, as electrical performance and compliance certifications are equivalent.

Frequently Asked Questions (FAQ)

Q: Can MBR40250G directly replace the obsolete MBR40250 in existing designs?

A: Yes. The MBR40250G maintains identical electrical specifications including voltage rating (250 V), current rating (40 A), forward voltage drop (970 mV @ 40 A), and reverse recovery time (35 ns). Both use TO-220-2 through-hole packaging. No circuit modifications are required.

Q: What is the difference between MBR40250G and MBR40250TG?

A: Both parts are electrically identical with matching voltage, current, and thermal specifications. The primary difference is the supplier device package designation: MBR40250G uses TO-220-2 while MBR40250TG uses TO-220-3. Both are through-hole mounted and functionally equivalent in circuit applications.

Q: Why is the original MBR40250 marked as obsolete?

A: The MBR40250 is classified as obsolete in the product lifecycle. Active equivalent alternatives (MBR40250G and MBR40250TG) are available from onsemi with identical electrical performance and improved compliance certifications (ROHS3).

Q: Are there compliance differences between the original and substitute parts?

A: Yes. The original MBR40250 is RoHS non-compliant, while both MBR40250G and MBR40250TG are ROHS3 compliant. Both substitute parts maintain REACH Unaffected status. For applications requiring regulatory compliance, the substitute parts are preferred.

Q: Can MBR40250TG be used in applications designed for MBR40250G?

A: Yes. The MBR40250TG and MBR40250G are parametrically equivalent with identical electrical characteristics. The package designation difference does not affect functional performance or circuit compatibility in through-hole mounting applications.

Q: What are the key electrical parameters that define substitution eligibility?

A: Substitution is determined by equivalence in reverse voltage (250 V), average rectified current (40 A), forward voltage drop (970 mV @ 40 A), reverse recovery time (35 ns), reverse leakage current (30 µA @ 250 V), and operating temperature range (-65°C to 150°C). All substitute parts maintain these specifications.