AU02Z Equivalent & Substitute Parts

Part Overview

The AU02Z is a general-purpose rectifier diode manufactured by Sanken Electric USA Inc., rated for 200 V DC reverse voltage and 800 mA average rectified current. This through-hole axial component features fast recovery characteristics with a reverse recovery time of 400 ns, making it suitable for standard rectification applications requiring moderate current handling and voltage ratings.

The AU02Z is classified as Active product status with RoHS compliance and unlimited moisture sensitivity level. Substitute parts are identified based on matching or exceeding the electrical and mechanical specifications of the original component, ensuring functional compatibility in circuit applications.

Key Parameters

Parameter	AU02Z Value	Unit
Voltage - DC Reverse (Vr) (Max)	200	V
Current - Average Rectified (Io)	800	mA
Voltage - Forward (Vf) (Max) @ If	1.3 @ 800 mA	V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA	-
Reverse Recovery Time (trr)	400	ns
Current - Reverse Leakage @ Vr	10 @ 200 V	µA
Mounting Type	Through Hole	-
Package / Case	Axial	-
Operating Temperature - Junction	-40 to 150	°C
RoHS Status	RoHS Compliant	-

Substitute Part Grouping Explanation

Substitute parts for the AU02Z are selected based on the following critical parameters:

Mandatory Matching Criteria:

Voltage - DC Reverse (Vr) (Max): 200 V minimum
Current - Average Rectified (Io): 800 mA minimum
Mounting Type: Through Hole
Package / Case: Axial compatible

Acceptable Parameter Variations:

Forward voltage (Vf) may vary within standard rectifier tolerances
Reverse recovery time (trr) may differ; fast recovery (≤500 ns) and standard recovery (>500 ns) are both acceptable
Reverse leakage current may vary
Operating temperature range may exceed the original specification
RoHS compliance status may differ

All identified substitute parts meet or exceed the 200 V reverse voltage and 800 mA current requirements. Substitute parts rated at 1 A (1000 mA) provide additional current margin and are functionally compatible. All substitute parts maintain through-hole axial packaging for direct mechanical and electrical compatibility.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) V	Io (mA)	Vf (Max) V @ If	Speed	trr (ns)	Ir @ Vr (µA)	Tj (°C)	RoHS
AU02Z	Sanken Electric USA Inc.	200	800	1.3 @ 800 mA	Fast Recovery ≤500ns	400	10 @ 200 V	-40 to 150	Compliant
1N3611	Microchip Technology	200	1000	1.1 @ 1 A	Standard Recovery >500ns	-	1 @ 200 V	-65 to 175	Non-compliant
1N3611GP-E3/54	Vishay General Semiconductor	200	1000	1.0 @ 1 A	Standard Recovery >500ns	2000	1 @ 200 V	-65 to 175	ROHS3 Compliant
1N4003-E3/53	Vishay General Semiconductor	200	1000	1.1 @ 1 A	Standard Recovery >500ns	-	5 @ 200 V	-55 to 150	ROHS3 Compliant
1N4003-E3/54	Vishay General Semiconductor	200	1000	1.1 @ 1 A	Standard Recovery >500ns	-	5 @ 200 V	-55 to 150	ROHS3 Compliant
1N4003-E3/73	Vishay General Semiconductor	200	1000	1.1 @ 1 A	Standard Recovery >500ns	-	5 @ 200 V	-55 to 150	ROHS3 Compliant
1N4003-T	Diodes Incorporated	200	1000	1.0 @ 1 A	Standard Recovery >500ns	-	5 @ 200 V	-65 to 150	ROHS3 Compliant
1N4003-TP	Micro Commercial Co	200	1000	1.1 @ 1 A	Standard Recovery >500ns	2000	5 @ 200 V	-55 to 150	ROHS3 Compliant
1N4003G	Taiwan Semiconductor Corporation	200	1000	1.0 @ 1 A	Standard Recovery >500ns	-	5 @ 200 V	-55 to 150	ROHS3 Compliant
1N4003G-T	Diodes Incorporated	200	1000	1.0 @ 1 A	Standard Recovery >500ns	2000	5 @ 200 V	-65 to 175	ROHS3 Compliant
1N4003GP-E3/54	Vishay General Semiconductor	200	1000	1.1 @ 1 A	Standard Recovery >500ns	2000	5 @ 200 V	-65 to 175	ROHS3 Compliant

Engineering Selection Recommendations

All identified substitute parts satisfy the electrical requirements of the AU02Z with 200 V reverse voltage rating and current capacity at or above 800 mA. The following factors determine suitability for specific applications:

RoHS Compliance Consideration: The AU02Z is RoHS Compliant. All substitute parts except 1N3611 (Microchip Technology) are ROHS3 Compliant, meeting current environmental regulations. The 1N3611 is RoHS non-compliant and should be selected only when legacy component compatibility is required.

Product Status:

AU02Z: Active
1N3611: Active
1N3611GP-E3/54: Active
1N4003-E3/53: Active
1N4003-E3/54: Active
1N4003-E3/73: Active
1N4003-T: Last Time Buy
1N4003-TP: Not For New Designs
1N4003G: Active
1N4003G-T: Active
1N4003GP-E3/54: Active

For new designs, select from parts with Active status. The 1N4003-T (Last Time Buy) and 1N4003-TP (Not For New Designs) are suitable only for legacy system maintenance or replacement applications.

Recovery Speed Characteristics: The AU02Z features fast recovery (≤500 ns, trr = 400 ns). Most substitute parts employ standard recovery (>500 ns). Fast recovery diodes reduce switching losses in high-frequency applications. Standard recovery substitutes are acceptable for general-purpose rectification at lower switching frequencies.

Temperature Range: The AU02Z operates from -40°C to 150°C. Substitute parts with extended temperature ranges (-65°C to 175°C) provide additional thermal margin for demanding environments. Parts with narrower ranges (-55°C to 150°C) are suitable for standard industrial applications.

Packaging and Inventory: All substitute parts maintain through-hole axial packaging compatible with AU02Z footprints. Substitute parts are available in higher inventory quantities, supporting production continuity and supply chain flexibility.

Frequently Asked Questions (FAQ)

Q: Can 1N4003 series diodes directly replace the AU02Z?

A: Yes. The 1N4003 series (1N4003-E3/54, 1N4003-E3/73, 1N4003-T, 1N4003G, 1N4003G-T, 1N4003GP-E3/54) all meet the 200 V reverse voltage and 800 mA minimum current requirements. All maintain through-hole axial packaging. The primary difference is recovery speed classification: AU02Z is fast recovery (400 ns), while 1N4003 variants are standard recovery (>500 ns). This difference is not significant for general-purpose rectification applications.

Q: What is the difference between fast recovery and standard recovery diodes?

A: Fast recovery diodes (≤500 ns reverse recovery time) switch off more quickly, reducing switching losses and noise in high-frequency circuits. Standard recovery diodes (>500 ns) are suitable for lower-frequency applications and general-purpose rectification. The AU02Z fast recovery specification (400 ns) provides performance advantage in switching power supplies and similar applications. Standard recovery substitutes are functionally compatible for DC rectification and lower-frequency applications.

Q: Are all substitute parts RoHS compliant?

A: All substitute parts except 1N3611 (Microchip Technology) are ROHS3 Compliant. The AU02Z is RoHS Compliant. For applications requiring RoHS compliance, select from 1N3611GP-E3/54, 1N4003-E3/53, 1N4003-E3/54, 1N4003-E3/73, 1N4003-T, 1N4003G, 1N4003G-T, or 1N4003GP-E3/54.

Q: Can I use a 1 A rated diode in place of an 800 mA rated diode?

A: Yes. All substitute parts are rated for 1 A (1000 mA) average rectified current, exceeding the AU02Z 800 mA specification. Higher current ratings provide additional safety margin and do not negatively affect circuit operation. The diode will operate within its rated specifications at 800 mA.

Q: What is the difference between different packaging codes (E3/54, E3/73, etc.)?

A: The suffix codes (E3/54, E3/73, etc.) identify the tape and reel configuration and manufacturing date code for cut tape packaging. These codes do not affect electrical performance or mechanical compatibility. All variants with the same base part number (e.g., 1N4003) are electrically identical.

Q: Is the AU02Z suitable for high-frequency switching applications?

A: The AU02Z fast recovery specification (400 ns) makes it suitable for switching applications up to moderate frequencies. For high-frequency applications (>100 kHz), verify that the 400 ns recovery time meets circuit requirements. Standard recovery substitutes (>500 ns) are not recommended for high-frequency switching applications.

Q: What is the operating temperature range consideration for substitute selection?

A: The AU02Z operates from -40°C to 150°C. Substitute parts with extended ranges (-65°C to 175°C) provide additional thermal margin for extreme environments. Parts with narrower ranges (-55°C to 150°C) are suitable for standard industrial applications. Select based on actual circuit operating temperature requirements.

Q: Are there any mechanical compatibility issues between AU02Z and substitute parts?

A: No. All substitute parts maintain through-hole axial packaging (DO-204AL, DO-41) compatible with AU02Z footprints. Direct mechanical and electrical substitution is possible without PCB modification.

Q: Which substitute part has the lowest forward voltage drop?

A: Multiple substitute parts share the lowest forward voltage specification of 1.0 V @ 1 A: 1N3611GP-E3/54, 1N4003-T, 1N4003G, and 1N4003G-T. The AU02Z forward voltage is 1.3 V @ 800 mA. Lower forward voltage reduces power dissipation in rectification circuits.

Q: Should I select a part with Active status over Last Time Buy or Not For New Designs?

A: For new designs, select parts with Active status to ensure long-term availability and supply continuity. Last Time Buy (1N4003-T) and Not For New Designs (1N4003-TP) designations indicate limited future availability and are suitable only for legacy system maintenance or replacement applications.

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