2A04-T Equivalent & Substitute Parts

Part Overview

The 2A04-T is a general-purpose rectifier diode manufactured by Diodes Incorporated, rated for 400 V DC reverse voltage and 2 A average rectified current in a DO-15 through-hole package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The 2A04-T employs standard recovery technology with a maximum forward voltage of 1.1 V at 2 A and operates across a junction temperature range of -65°C to 150°C.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	400	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 2 A	V
Current - Reverse Leakage @ Vr	5	µA @ 400 V
Speed	Standard Recovery >500ns, > 200mA (Io)	-
Mounting Type	Through Hole	-
Package / Case	DO-204AC, DO-15, Axial	-
Operating Temperature - Junction	-65 to 150	°C
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution of the 2A04-T is determined by strict equivalence across the following electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 400 V
Current - Average Rectified (Io): 2 A
Mounting Type: Through Hole
Package / Case: DO-204AC, DO-15, or Axial variants
Current - Reverse Leakage @ Vr: 5 µA @ 400 V

Secondary Compatibility Factors:

Forward voltage (Vf) at rated current must not exceed application circuit limits
Recovery speed classification (Standard or Fast Recovery) must be compatible with circuit switching requirements
Operating temperature range must encompass application requirements
RoHS3 compliance and REACH status must align with regulatory requirements

The substitute parts listed maintain the core electrical ratings (400 V, 2 A) and through-hole mounting configuration. Variations in forward voltage, recovery time, and package form factor (DO-15 versus DO-41 axial) are noted to enable informed selection based on specific circuit requirements.

Parameter Comparison

Parameter	2A04-T (Diodes Inc.)	GPP20G-E3/54 (Vishay)	2A04G A0G (TSC)	EGP20G (Fairchild)	MUR240G (onsemi)	MUR240RLG (onsemi)
Voltage - DC Reverse (Vr) (Max)	400 V	400 V	400 V	400 V	400 V	400 V
Current - Average Rectified (Io)	2 A	2 A	2 A	2 A	2 A	2 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 2 A	1.1 V @ 2 A	1 V @ 2 A	1.25 V @ 2 A	1.3 V @ 2 A	1.3 V @ 2 A
Speed	Standard Recovery >500ns, > 200mA (Io)	Standard Recovery >500ns, > 200mA (Io)	Standard Recovery >500ns, > 200mA (Io)	Fast Recovery =< 500ns, > 200mA (Io)	Fast Recovery =< 500ns, > 200mA (Io)	Fast Recovery =< 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	5 µA @ 400 V	5 µA @ 400 V	5 µA @ 400 V	5 µA @ 400 V	5 µA @ 400 V	5 µA @ 400 V
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	DO-204AC, DO-15, Axial	DO-204AC, DO-15, Axial	DO-204AC, DO-15, Axial	DO-204AC, DO-15, Axial	DO-204AL, DO-41, Axial	DO-204AL, DO-41, Axial
Operating Temperature - Junction	-65 to 150°C	-55 to 150°C	-55 to 150°C	-65 to 150°C	-65 to 175°C	-65 to 175°C
Product Status	Obsolete	Active	Active	Active	Obsolete	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	Not specified	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Active Product Status Preference: GPP20G-E3/54, 2A04G A0G, EGP20G, and MUR240RLG are classified as active products and are recommended for new designs and long-term procurement. The 2A04-T and MUR240G are obsolete and should be replaced in active designs.

Minimum Temperature Range Consideration: Applications requiring operation below -55°C must use EGP20G or the MUR240 series (MUR240G or MUR240RLG), which support -65°C minimum junction temperature. GPP20G-E3/54 and 2A04G A0G are limited to -55°C minimum.

Recovery Speed Classification: Standard recovery devices (2A04-T, GPP20G-E3/54, 2A04G A0G) are suitable for low-frequency rectification and general-purpose applications. Fast recovery devices (EGP20G, MUR240G, MUR240RLG) are required for switching power supplies and high-frequency applications where reverse recovery time is critical.

Forward Voltage Drop: 2A04G A0G exhibits the lowest forward voltage (1 V @ 2 A), followed by 2A04-T and GPP20G-E3/54 (1.1 V @ 2 A). EGP20G and MUR240 series show higher forward voltage (1.25 V and 1.3 V respectively). Selection should account for power dissipation and thermal management requirements.

Package Form Factor: DO-15 and DO-204AC packages (2A04-T, GPP20G-E3/54, 2A04G A0G, EGP20G) are mechanically equivalent. MUR240 series uses DO-41 axial package, which requires different PCB layout and mechanical mounting considerations.

Regulatory Compliance: All listed substitutes maintain ROHS3 compliance. GPP20G-E3/54 is REACH Unaffected; all other active substitutes are REACH Unaffected or Compliant.

Frequently Asked Questions (FAQ)

Q: Can the 2A04-T be directly replaced with any of the listed substitutes?

A: Direct replacement depends on circuit requirements. All listed substitutes share the core electrical ratings (400 V, 2 A, 5 µA reverse leakage). However, differences in forward voltage, recovery speed, and package form factor must be evaluated. GPP20G-E3/54 and 2A04G A0G are the closest electrical equivalents. MUR240 series requires different PCB layout due to DO-41 axial package.

Q: What is the difference between Standard Recovery and Fast Recovery diodes?

A: Standard recovery diodes (>500 ns recovery time) are suitable for low-frequency rectification and general-purpose applications. Fast recovery diodes (≤500 ns recovery time) are required for switching power supplies and high-frequency circuits where reverse recovery time affects efficiency and EMI performance. The 2A04-T is a standard recovery device; EGP20G and MUR240 series are fast recovery devices.

Q: Are the DO-15 and DO-204AC packages interchangeable?

A: Yes. DO-15 and DO-204AC refer to the same package designation. Both are axial through-hole packages with identical mechanical and electrical characteristics. GPP20G-E3/54, 2A04G A0G, and EGP20G use this package form.

Q: Why do MUR240G and MUR240RLG use a different package (DO-41)?

A: MUR240 series uses the DO-41 axial package, which is mechanically similar to DO-15 but may have different lead spacing or physical dimensions. PCB layout and mechanical mounting must be verified before substitution. MUR240RLG is the active product variant; MUR240G is obsolete.

Q: Which substitute is recommended for new designs?

A: MUR240RLG is recommended for new designs requiring fast recovery characteristics and active product status. For standard recovery applications, 2A04G A0G or EGP20G are suitable. All three are active products with full manufacturer support.

Q: What is the impact of forward voltage differences on circuit performance?

A: Forward voltage differences directly affect power dissipation and heat generation. 2A04G A0G (1 V @ 2 A) dissipates less power than MUR240RLG (1.3 V @ 2 A). In high-current or continuous-duty applications, lower forward voltage reduces thermal stress. Circuit design must account for these differences in power budget calculations.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All listed substitutes are RoHS3 compliant, meeting environmental and regulatory requirements for lead-free manufacturing and hazardous substance restrictions.

Q: Can the 2A04-T be used in applications requiring -65°C operation?

A: Yes. The 2A04-T supports -65°C minimum junction temperature. However, since it is obsolete, substitutes with equivalent temperature range (EGP20G, MUR240G, MUR240RLG) are preferred for new designs. GPP20G-E3/54 and 2A04G A0G are limited to -55°C minimum.

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