DUR1040CT Equivalent & Substitute Parts

Part Overview

The DUR1040CT is a diode array manufactured by Littelfuse Inc., classified as a general-purpose rectifier diode in the DUR series. This component features a 1 Pair Common Cathode configuration with a maximum reverse voltage rating of 400 V and an average rectified current of 5 A per diode. The device is housed in a TO-220-3 through-hole package and is currently in active production status.

Substitute parts are identified when equivalent electrical and mechanical parameters allow direct replacement in circuit applications. The DUR1040CT remains in active production; however, alternative components may be selected based on enhanced performance characteristics, availability, or specific application requirements within the defined parameter envelope.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	400	V
Current - Average Rectified (Io) (per Diode)	5	A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 5 A	V
Reverse Recovery Time (trr)	45	ns
Current - Reverse Leakage @ Vr	30 µA @ 100 V	µA
Operating Temperature - Junction	-55 to 150	°C
Package / Case	TO-220-3	—
Diode Configuration	1 Pair Common Cathode	—
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—

Substitute Part Grouping Explanation

Substitution of the DUR1040CT is permissible when the alternative component meets or exceeds the following critical electrical parameters:

Voltage Rating: Minimum 400 V DC reverse voltage (Vr)
Current Rating: Minimum 5 A average rectified current per diode
Diode Configuration: 1 Pair Common Cathode topology
Package Type: TO-220-3 through-hole mounting
Speed Classification: Fast Recovery diode technology
Reverse Recovery Time: 45 ns or faster

The DPG30C400PB from IXYS satisfies all substitution criteria. This component maintains identical voltage and configuration specifications while providing enhanced current capacity (15 A versus 5 A) and improved reverse leakage characteristics. Both components are RoHS3 compliant and REACH unaffected, ensuring regulatory equivalence.

Parameter Comparison

Parameter	DUR1040CT (Littelfuse)	DPG30C400PB (IXYS)	Unit
Voltage - DC Reverse (Vr) (Max)	400	400	V
Current - Average Rectified (Io) (per Diode)	5	15	A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 5 A	1.39 V @ 15 A	V
Reverse Recovery Time (trr)	45	45	ns
Current - Reverse Leakage @ Vr	30 µA @ 100 V	1 µA @ 400 V	µA
Operating Temperature - Junction	-55 to 150	-55 to 175	°C
Package / Case	TO-220-3	TO-220-3	—
Diode Configuration	1 Pair Common Cathode	1 Pair Common Cathode	—
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	—
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	—
REACH Status	REACH Unaffected	REACH Unaffected	—

Engineering Selection Recommendations

The DUR1040CT and DPG30C400PB are electrically and mechanically compatible for direct substitution in TO-220-3 through-hole applications requiring 400 V, 1 Pair Common Cathode diode arrays with fast recovery characteristics.

DUR1040CT (Littelfuse) is appropriate for applications with current requirements up to 5 A per diode and operating temperatures within the -55°C to 150°C range. This component maintains active production status and is RoHS3 compliant.

DPG30C400PB (IXYS) provides enhanced performance characteristics including 15 A current capacity per diode, extended operating temperature range to 175°C, and significantly reduced reverse leakage current (1 µA at 400 V versus 30 µA at 100 V). This component is also RoHS3 compliant and REACH unaffected. The DPG30C400PB is suitable for applications requiring higher current handling or improved thermal performance within the same voltage and package envelope.

Both components satisfy identical regulatory requirements (RoHS3, REACH unaffected, EAR99 ECCN classification) and are classified under the same HTSUS code (8541.10.0080).

Frequently Asked Questions (FAQ)

Q: Can the DPG30C400PB replace the DUR1040CT in existing designs?

A: Yes. Both components share identical voltage ratings (400 V), diode configuration (1 Pair Common Cathode), package type (TO-220-3), and fast recovery speed classification. The DPG30C400PB provides higher current capacity (15 A versus 5 A) and improved reverse leakage performance, making it a direct substitute for applications operating at or below the DUR1040CT's rated current.

Q: Are there thermal considerations when substituting these components?

A: The DPG30C400PB operates across a wider temperature range (-55°C to 175°C) compared to the DUR1040CT (-55°C to 150°C). Both components are housed in identical TO-220-3 packages. Thermal management requirements depend on application-specific current levels and heat dissipation design; the package type remains unchanged.

Q: Do both components meet the same regulatory standards?

A: Yes. Both the DUR1040CT and DPG30C400PB are RoHS3 compliant and REACH unaffected. Both are classified under ECCN EAR99 and HTSUS code 8541.10.0080.

Q: What is the primary difference between these two diode arrays?

A: The primary differences are current rating (5 A versus 15 A per diode), maximum operating temperature (150°C versus 175°C), and reverse leakage current characteristics. The DPG30C400PB is rated for higher current applications and exhibits lower reverse leakage at the maximum voltage rating.

Q: Are pin configurations identical between these components?

A: Yes. Both components use the TO-220-3 package with identical pin configuration for the 1 Pair Common Cathode topology, enabling direct mechanical and electrical substitution.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message