EU2A Equivalent & Substitute Parts

Part Overview

The EU2A is a general-purpose rectifier diode manufactured by Sanken Electric USA Inc., rated for 600 V DC reverse voltage and 1 A average rectified current. This through-hole axial package diode operates across a junction temperature range of -40°C to 150°C and features fast recovery characteristics with a reverse recovery time of 400 ns. The part is RoHS compliant and currently active in production.

Equivalent and substitute parts are necessary when the EU2A becomes unavailable, when alternative sourcing is required for supply chain optimization, or when design flexibility permits selection from multiple qualified manufacturers offering identical electrical performance within the same package category.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	600	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	1.4 V @ 1 A	V
Reverse Recovery Time (trr)	400	ns
Current - Reverse Leakage @ Vr	10	µA @ 600 V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	-
Mounting Type	Through Hole	-
Package / Case	Axial	-
Operating Temperature - Junction	-40 to 150	°C
RoHS Status	RoHS Compliant	-
Moisture Sensitivity Level (MSL)	1 (Unlimited)	-

Substitute Part Grouping Explanation

Substitution of the EU2A is determined by strict equivalence across the following electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 600 V minimum
Current - Average Rectified (Io): 1 A minimum
Mounting Type: Through Hole
Package / Case: Axial or DO-204AL (DO-41) compatible

Secondary Compatibility Factors:

Forward voltage (Vf) at rated current
Reverse recovery time (trr) classification
Reverse leakage current @ rated voltage
Operating temperature range
RoHS and environmental compliance status

Substitute parts are grouped into two categories based on recovery speed classification:

Category 1: Fast Recovery Diodes (trr ≤ 500ns) Parts with fast recovery characteristics matching or exceeding the EU2A's 400 ns specification. These are direct functional equivalents for applications requiring rapid switching performance.

Category 2: Standard Recovery Diodes (trr > 500ns) Parts with standard recovery characteristics. These are suitable for general-purpose rectification applications where fast recovery is not a circuit requirement. Forward voltage and leakage current specifications remain within acceptable ranges for 600 V / 1 A rectifier applications.

All listed substitute parts maintain 600 V reverse voltage rating, 1 A average rectified current capacity, through-hole mounting, and axial or compatible package configurations.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) [V]	trr [ns/µs]	Ir @ Vr [µA]	Package	Tj Range [°C]	RoHS Status
EU2A	Sanken Electric USA Inc.	600	1	1.4 @ 1A	400 ns	10 @ 600V	Axial	-40 to 150	RoHS Compliant
1N4005-E3/54	Vishay General Semiconductor	600	1	1.1 @ 1A	>500 ns	5 @ 600V	DO-204AL (DO-41)	-55 to 150	ROHS3 Compliant
1N4005-E3/73	Vishay General Semiconductor	600	1	1.1 @ 1A	>500 ns	5 @ 600V	DO-204AL (DO-41)	-55 to 150	ROHS3 Compliant
1N4005-T	Diodes Incorporated	600	1	1.0 @ 1A	>500 ns	5 @ 600V	DO-204AL (DO-41)	-65 to 150	ROHS3 Compliant
1N4005-TP	Micro Commercial Co	600	1	1.1 @ 1A	2 µs	5 @ 600V	DO-204AL (DO-41)	-55 to 150	ROHS3 Compliant
1N4005G	Good-Ark Semiconductor	600	1	1.1 @ 1A	1 µs	5 @ 600V	DO-204AL (DO-41)	-55 to 150	ROHS3 Compliant
1N4005G-T	Diodes Incorporated	600	1	1.0 @ 1A	2 µs	5 @ 600V	DO-204AL (DO-41)	-65 to 175	ROHS3 Compliant
1N4005GP-E3/54	Vishay General Semiconductor	600	1	1.1 @ 1A	2 µs	5 @ 600V	DO-204AL (DO-41)	-65 to 175	ROHS3 Compliant
1N4005GP-E3/73	Vishay General Semiconductor	600	1	1.1 @ 1A	2 µs	5 @ 600V	DO-204AL (DO-41)	-65 to 175	ROHS3 Compliant
1N4005RLG	onsemi	600	1	1.1 @ 1A	>500 ns	10 @ 600V	Axial	-65 to 175	ROHS3 Compliant
1N4247	Microchip Technology	600	1	1.3 @ 3A	5 µs	1 @ 600V	Axial	-65 to 175	RoHS non-compliant

Engineering Selection Recommendations

Active Production Status Parts (Preferred Selection):

The following substitute parts are in active production and recommended for new designs and ongoing procurement:

1N4005-E3/54, 1N4005-E3/73 (Vishay General Semiconductor): ROHS3 compliant, standard recovery, 60,913 and 80,421 units in stock respectively. Extended temperature range to -55°C. Forward voltage 1.1 V @ 1 A.
1N4005-TP (Micro Commercial Co): ROHS3 compliant, standard recovery, 110,625 units in stock. Extended temperature range to -55°C. Forward voltage 1.1 V @ 1 A.
1N4005G (Good-Ark Semiconductor): ROHS3 compliant, standard recovery, 5,100 units in stock. Extended temperature range to -55°C. Forward voltage 1.1 V @ 1 A.
1N4005G-T (Diodes Incorporated): ROHS3 compliant, standard recovery, 21,675 units in stock. Extended temperature range to -65°C and upper limit to 175°C. Forward voltage 1.0 V @ 1 A.
1N4005GP-E3/54, 1N4005GP-E3/73 (Vishay General Semiconductor SUPERECTIFIER® series): ROHS3 compliant, standard recovery, 60,913 and 12,200 units in stock respectively. Extended temperature range to -65°C and upper limit to 175°C. Forward voltage 1.1 V @ 1 A.

Axial Package Equivalent:

1N4005RLG (onsemi): ROHS3 compliant, axial package matching EU2A form factor, 1,200 units in stock. Extended temperature range to -65°C and upper limit to 175°C. Designated "Not For New Designs" status.

Legacy/Non-Compliant Status (Not Recommended for New Designs):

1N4247 (Microchip Technology): RoHS non-compliant. Axial package. 7,165 units in stock. Extended temperature range to -65°C and upper limit to 175°C.

Selection Basis:

All substitute parts maintain the EU2A's 600 V reverse voltage rating and 1 A average rectified current capacity. Substitutes with ROHS3 compliance and active production status are preferred for new designs. The 1N4005 series variants offer superior availability (up to 110,625 units) and lower forward voltage (1.0 to 1.1 V) compared to the EU2A (1.4 V @ 1 A), resulting in reduced power dissipation in rectification circuits. Extended temperature ranges (-55°C to 175°C) in selected variants provide design flexibility for thermal environments beyond the EU2A's -40°C to 150°C specification.

Frequently Asked Questions (FAQ)

Q: Can the EU2A be directly replaced with any 1N4005 variant?

A: Yes, within electrical and mechanical constraints. All 1N4005 variants listed maintain 600 V reverse voltage, 1 A average rectified current, and through-hole mounting. The primary difference is recovery speed classification: the EU2A features fast recovery (400 ns), while 1N4005 variants are standard recovery (>500 ns). For general-purpose rectification, standard recovery performance is acceptable. For high-frequency switching applications, verify that circuit design does not require the EU2A's faster recovery characteristics.

Q: What is the difference between DO-204AL and axial packages?

A: DO-204AL (also designated DO-41) and axial are equivalent package designations for through-hole diodes with leads extending from opposite ends of the component body. The EU2A uses axial packaging. Substitute parts designated as DO-204AL (DO-41) or axial are mechanically and electrically compatible for PCB mounting and circuit operation.

Q: Why do some substitutes have lower forward voltage than the EU2A?

A: Forward voltage variation is a normal characteristic across different manufacturers and process technologies. The EU2A specifies 1.4 V @ 1 A, while many 1N4005 variants specify 1.0 to 1.1 V @ 1 A. Lower forward voltage reduces power dissipation during rectification, improving circuit efficiency. This is a beneficial characteristic and does not compromise substitution compatibility.

Q: Are all listed substitutes RoHS compliant?

A: Most substitutes are ROHS3 compliant. The exception is 1N4247 (Microchip Technology), which is RoHS non-compliant. For applications requiring RoHS compliance, select from the ROHS3 compliant variants. The EU2A itself is RoHS compliant.

Q: What is the significance of reverse recovery time (trr) differences?

A: The EU2A specifies 400 ns fast recovery. Substitute parts with standard recovery (>500 ns) are suitable for low-frequency rectification and power supply applications. Fast recovery is critical in high-frequency switching circuits, resonant converters, and applications where reverse recovery current must be minimized. For standard 50/60 Hz power rectification, standard recovery performance is adequate.

Q: Can the EU2A be used in circuits designed for 1N4005?

A: Yes. The EU2A meets or exceeds the electrical specifications of 1N4005 variants. The EU2A's faster recovery time (400 ns vs. >500 ns) and higher forward voltage (1.4 V vs. 1.0-1.1 V) are compatible with 1N4005 circuit designs. However, the EU2A's higher forward voltage results in greater power dissipation, which may be a consideration in thermally constrained applications.

Q: What inventory considerations apply to substitute selection?

A: Substitute availability varies significantly. The 1N4005-TP (Micro Commercial Co) offers the highest inventory at 110,625 units. The 1N4005-E3/73 (Vishay) provides 80,421 units. The EU2A itself has 888 units in stock. For supply chain continuity, parts with higher inventory levels reduce procurement risk.

Q: Are there temperature range limitations when substituting?

A: The EU2A operates from -40°C to 150°C junction temperature. Most substitute parts extend this range to -55°C minimum and -65°C minimum, with upper limits reaching 175°C. Substitutes with extended temperature ranges provide design flexibility for applications operating outside the EU2A's specified range. Verify that circuit design requirements align with the selected substitute's temperature specification.

Q: What is the SUPERECTIFIER® designation on Vishay 1N4005GP variants?

A: SUPERECTIFIER® is a Vishay product series designation indicating optimized rectifier performance characteristics. The 1N4005GP-E3/54 and 1N4005GP-E3/73 variants maintain standard 600 V / 1 A specifications while offering controlled forward voltage and recovery time characteristics. This designation does not alter substitution compatibility with the EU2A.

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