1N5406-AP Equivalent & Substitute Parts

Part Overview

The 1N5406-AP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 600 V DC reverse voltage and 3 A average rectified current in a DO-201AD axial through-hole package. This part is classified as obsolete, making identification of equivalent and substitute components necessary for ongoing design support and procurement continuity. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts satisfy the same functional requirements within the allowed parameter ranges for this rectifier diode category.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	600	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	1	V @ 3 A
Current - Reverse Leakage @ Vr	5	µA @ 600 V
Speed	Standard Recovery >500ns, > 200mA (Io)	—
Capacitance @ Vr, F	40	pF @ 4V, 1MHz
Mounting Type	Through Hole	—
Package / Case	DO-201AD, Axial	—
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the 1N5406-AP rectifier diode is determined by strict equivalence in the following electrical and mechanical parameters:

Reverse Voltage Rating: 600 V maximum
Average Rectified Current: 3 A
Forward Voltage Drop: 1 V maximum at 3 A
Reverse Leakage Current: 5 µA at 600 V
Recovery Speed: Standard recovery >500 ns at >200 mA
Package Type: DO-201AD axial through-hole
Operating Temperature Range: -55°C to 150°C
RoHS Compliance: ROHS3 Compliant

Parts are grouped into two categories: direct manufacturer equivalents (same manufacturer, active product status) and parametric equivalents (alternative manufacturers, identical or superior electrical characteristics). All substitute parts must maintain the DO-201AD package form factor and through-hole mounting configuration to ensure mechanical and electrical compatibility in existing circuit designs.

Parameter Comparison

Parameter	1N5406-AP (Main)	1N5406GP-AP	1N5406G A0G	1N5406GHA0G
Manufacturer	Micro Commercial Co	Micro Commercial Co	Taiwan Semiconductor Corporation	Taiwan Semiconductor Corporation
Product Status	Obsolete	Active	Active	Active
Voltage - DC Reverse (Vr) (Max)	600 V	600 V	600 V	600 V
Current - Average Rectified (Io)	3 A	3 A	3 A	3 A
Voltage - Forward (Vf) (Max) @ If	1 V @ 3 A	1.1 V @ 3 A	1 V @ 3 A	1 V @ 3 A
Current - Reverse Leakage @ Vr	5 µA @ 600 V	5 µA @ 600 V	5 µA @ 600 V	5 µA @ 600 V
Speed	Standard Recovery >500ns, > 200mA (Io)	Standard Recovery >500ns, > 200mA (Io)	Standard Recovery >500ns, > 200mA (Io)	Standard Recovery >500ns, > 200mA (Io)
Capacitance @ Vr, F	40 pF @ 4V, 1MHz	40 pF @ 4V, 1MHz	25 pF @ 4V, 1MHz	25 pF @ 4V, 1MHz
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	DO-201AD, Axial	DO-201AD, Axial	DO-201AD, Axial	DO-201AD, Axial
Operating Temperature - Junction	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Automotive Grade	—	—	—	Yes (AEC-Q101)

Engineering Selection Recommendations

1N5406GP-AP is the primary direct substitute from Micro Commercial Co. This part carries active product status, ensuring long-term availability and supply chain continuity. The 1N5406GP-AP maintains identical electrical specifications to the 1N5406-AP with the exception of forward voltage drop (1.1 V versus 1 V at 3 A), which remains within acceptable rectifier diode tolerances. Packaging is Tape & Box (TB), suitable for automated assembly environments.

1N5406G A0G and 1N5406GHA0G are parametric equivalents manufactured by Taiwan Semiconductor Corporation. Both parts are active products with identical reverse voltage, current, and reverse leakage specifications. These parts feature reduced junction capacitance (25 pF versus 40 pF), which may provide improved high-frequency performance in switching applications. The 1N5406GHA0G carries automotive-grade qualification (AEC-Q101), making it suitable for automotive and mission-critical applications requiring enhanced reliability documentation.

Selection between substitute parts depends on supply chain requirements, packaging preferences, and application-specific needs. All substitute parts maintain ROHS3 compliance and unlimited moisture sensitivity level (MSL 1), ensuring compatibility with standard manufacturing and storage conditions.

Frequently Asked Questions (FAQ)

Q: Can 1N5406GP-AP directly replace 1N5406-AP in existing designs?

A: Yes. The 1N5406GP-AP maintains identical reverse voltage (600 V), average rectified current (3 A), reverse leakage current (5 µA), recovery speed, and DO-201AD package configuration. The forward voltage difference (1.1 V versus 1 V at 3 A) is within standard rectifier diode tolerance and does not affect circuit functionality in typical power supply and rectification applications.

Q: What is the difference between 1N5406G A0G and 1N5406GHA0G?

A: Both parts are parametrically identical in voltage rating, current rating, and reverse leakage specifications. The primary difference is that 1N5406GHA0G carries automotive-grade qualification (AEC-Q101), indicating compliance with automotive reliability and qualification standards. The 1N5406GHA0G is suitable for applications requiring automotive-level documentation and traceability.

Q: Are all substitute parts available in the same DO-201AD package?

A: Yes. All substitute parts listed (1N5406GP-AP, 1N5406G A0G, and 1N5406GHA0G) are supplied in DO-201AD axial through-hole packages, ensuring mechanical compatibility with existing printed circuit board layouts and assembly processes.

Q: What does the reduced capacitance (25 pF versus 40 pF) in Taiwan Semiconductor Corporation parts mean for circuit performance?

A: Lower junction capacitance reduces the capacitive reactance at high frequencies, which can improve switching performance and reduce switching losses in high-frequency rectification circuits. For standard 50/60 Hz power supply applications, this difference has negligible impact on circuit performance.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed maintain ROHS3 compliance, ensuring compatibility with environmental regulations and procurement requirements for lead-free and restricted substance-free components.

Q: What is the significance of MSL 1 (Unlimited) moisture sensitivity level?

A: MSL 1 indicates unlimited shelf life and storage stability without special moisture control measures. These parts do not require dry-pack storage or baking procedures prior to assembly, simplifying inventory management and reducing procurement complexity.

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