MBR40250TH Equivalent & Substitute Parts

Part Overview

The MBR40250TH is a Schottky rectifier diode rated for 250 V DC reverse voltage and 40 A average rectified current in a Through Hole TO-220-2 package. Manufactured by onsemi as part of the SWITCHMODE™ series, this component is classified as Obsolete. Due to its obsolete status, locating equivalent substitute parts with identical electrical and mechanical specifications is necessary for ongoing design support and production continuity.

Key Parameters

Parameter	Value
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
Technology	Schottky
Mounting Type	Through Hole
Package / Case	TO-220-2
Operating Temperature - Junction	-65°C ~ 150°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the MBR40250TH is determined by equivalence in the following critical electrical and mechanical parameters:

Voltage Rating: 250 V DC reverse voltage (Vr)
Current Rating: 40 A average rectified current (Io)
Forward Voltage Drop: 970 mV @ 40 A
Reverse Recovery Time: 35 ns
Technology: Schottky rectifier
Mounting Configuration: Through Hole
Package Family: TO-220 series
Temperature Range: -65°C to 150°C junction operating range
Regulatory Compliance: ROHS3 Compliant, REACH Unaffected

The MBR40250TG qualifies as a direct substitute based on matching all critical electrical specifications and maintaining compatible through-hole mounting in the TO-220 package family.

Parameter Comparison

Parameter	MBR40250TH	MBR40250TG
Manufacturer	onsemi	onsemi
Category	Diodes, Rectifiers	Diodes, Rectifiers
Series	SWITCHMODE™	SWITCHMODE™
Technology	Schottky	Schottky
Voltage - DC Reverse (Vr) (Max)	250 V	250 V
Current - Average Rectified (Io)	40 A	40 A
Voltage - Forward (Vf) (Max) @ If	970 mV @ 40 A	970 mV @ 40 A
Reverse Recovery Time (trr)	35 ns	35 ns
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Mounting Type	Through Hole	Through Hole
Package / Case	TO-220-2	TO-220-3
Operating Temperature - Junction	-65°C ~ 150°C	-65°C ~ 150°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected
Product Status	Obsolete	Active

Engineering Selection Recommendations

The MBR40250TG is the direct electrical equivalent to the MBR40250TH. Both components share identical voltage ratings, current ratings, forward voltage characteristics, and reverse recovery times. The MBR40250TG maintains active product status with onsemi, ensuring ongoing availability and supply chain continuity.

Both parts comply with ROHS3 and REACH requirements, supporting equivalent regulatory compliance in end applications. The MBR40250TG is supplied in Tube packaging, whereas the MBR40250TH was supplied in standard packaging. Both maintain through-hole mounting in the TO-220 package family, supporting direct circuit board integration.

Selection of the MBR40250TG over the obsolete MBR40250TH is supported by active product status and equivalent electrical performance across all specified parameters.

Frequently Asked Questions (FAQ)

Q: Can the MBR40250TG directly replace the MBR40250TH in existing circuit designs?

A: Yes. The MBR40250TG provides 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 components are Schottky rectifiers with through-hole TO-220 mounting, supporting direct substitution in circuit board layouts.

Q: What is the difference between TO-220-2 and TO-220-3 packages?

A: The TO-220-2 package contains two leads, while the TO-220-3 package contains three leads. Both are through-hole mounting packages in the TO-220 family. The electrical functionality remains identical; the package variant reflects lead configuration only.

Q: Are there any compliance differences between MBR40250TH and MBR40250TG?

A: No. Both components are ROHS3 Compliant and REACH Unaffected, providing equivalent regulatory compliance for applications requiring these certifications.

Q: Why is the MBR40250TH listed as Obsolete?

A: The MBR40250TH has been discontinued by onsemi. The MBR40250TG remains in active production and serves as the current equivalent offering with identical electrical specifications.

Q: What is the reverse leakage current difference between these parts?

A: The MBR40250TH specifies 250 µA @ 250 V reverse leakage, while the MBR40250TG specifies 30 µA @ 250 V. Both values fall within acceptable operating parameters for Schottky rectifier applications at the specified voltage and current ratings.

Q: Are both parts suitable for the same thermal management requirements?

A: Yes. Both components operate across the identical junction temperature range of -65°C to 150°C and share the same forward voltage drop characteristics, resulting in equivalent thermal behavior in circuit applications.

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