1N5406-G Equivalent & Substitute Parts

Part Overview

The 1N5406-G is a general-purpose rectifier diode manufactured by Comchip Technology, rated for 600 V DC reverse voltage and 3 A average rectified current in a through-hole DO-27 (DO-201AD) axial package. This component is classified as Active product status and is fully RoHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, manufacturing discontinuation, or design flexibility needs.

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
Speed	Standard Recovery >500ns, > 200mA (Io)	-
Current - Reverse Leakage @ Vr	5	µA @ 600 V
Mounting Type	Through Hole	-
Package / Case	DO-201AD, Axial	-
Operating Temperature - Junction	-65 to 125	°C
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitute parts for the 1N5406-G are grouped based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Critical Parameters (Must Match):

Voltage - DC Reverse (Vr) (Max): 600 V
Mounting Type: Through Hole
Package / Case: DO-201AD or DO-27 Axial

Secondary Parameters (Allowable Variation):

Current - Average Rectified (Io): 3 A minimum (higher ratings acceptable for uprating)
Voltage - Forward (Vf) (Max) @ If: Variation acceptable within circuit design margins
Speed: Both Standard Recovery (>500ns) and Fast Recovery (≤500ns) acceptable
Current - Reverse Leakage @ Vr: Variation acceptable within circuit design margins
Operating Temperature - Junction: Extended ranges acceptable

Substitute parts are organized into two categories: Direct Equivalents (matching 3 A current rating and standard recovery speed) and Uprated Alternatives (higher current ratings or enhanced recovery characteristics).

Parameter Comparison

Part Number	Manufacturer	Vr (Max) V	Io (A)	Vf (Max) @ If	Speed	Reverse Leakage @ Vr	Package	Temp Range °C	Product Status	RoHS
1N5406-G	Comchip Technology	600	3	1 V @ 3 A	Standard >500ns	5 µA @ 600 V	DO-201AD	-65 to 125	Active	ROHS3
1N5406-E3/54	Vishay	600	3	1.2 V @ 3 A	Standard >500ns	5 µA @ 600 V	DO-201AD	-50 to 150	Active	ROHS3
1N5406G	Taiwan Semiconductor	600	3	1 V @ 3 A	Standard >500ns	5 µA @ 600 V	DO-201AD	-55 to 150	Active	ROHS3
1N5406RLG	onsemi	600	3	1 V @ 3 A	Standard >500ns	10 µA @ 600 V	DO-201AA/DO-27	-65 to 150	Not For New Designs	ROHS3
1N5420	Microchip Technology	600	3	1.5 V @ 9 A	Fast ≤500ns	1 µA @ 600 V	B, Axial	-65 to 175	Active	Non-compliant
60S6-TP	Micro Commercial Co	600	6	1 V @ 6 A	Standard >500ns	5 µA @ 600 V	DO-201AD	-55 to 150	Active	ROHS3
EGP30J	onsemi	600	3	1.7 V @ 3 A	Fast ≤500ns	5 µA @ 600 V	DO-201AD	-65 to 150	Not For New Designs	ROHS3
FR305GP-TP	Micro Commercial Co	600	3	1.3 V @ 3 A	Fast ≤500ns	5 µA @ 600 V	DO-201AD	-55 to 155	Active	ROHS3
MR856G	onsemi	600	3	1.25 V @ 3 A	Fast ≤500ns	10 µA @ 600 V	DO-201AA/DO-27	-65 to 125	Active	ROHS3
MUR460RLG	onsemi	600	4	1.28 V @ 4 A	Fast ≤500ns	10 µA @ 600 V	DO-201AA/DO-27	-65 to 175	Active	ROHS3
P300J-E3/54	Vishay	600	3	1.2 V @ 3 A	Standard >500ns	5 µA @ 600 V	DO-201AD	-50 to 150	Active	ROHS3

Engineering Selection Recommendations

Tier 1 - Direct Equivalents (Preferred for New Designs):

1N5406-E3/54 (Vishay), 1N5406G (Taiwan Semiconductor), and P300J-E3/54 (Vishay) are direct electrical equivalents with identical 600 V / 3 A ratings, standard recovery speed, and DO-201AD packaging. All three are Active product status and RoHS3 compliant. These parts are suitable for direct substitution in new designs.

Tier 2 - Compatible Alternatives (Active Status):

FR305GP-TP (Micro Commercial Co) and MR856G (onsemi) maintain 600 V / 3 A electrical specifications with DO-201AD or DO-27 packaging. Both are Active status and RoHS3 compliant. These parts feature fast recovery characteristics (≤500ns), which may improve circuit performance in switching applications but require circuit validation.

Tier 3 - Uprated Alternatives (Active Status):

60S6-TP (Micro Commercial Co) and MUR460RLG (onsemi) provide higher current ratings (6 A and 4 A respectively) while maintaining 600 V reverse voltage and DO-201AD or DO-27 packaging. Both are Active status and RoHS3 compliant. These parts are suitable for applications requiring current margin or uprating.

Not Recommended for New Designs:

1N5406RLG (onsemi) and EGP30J (onsemi) carry "Not For New Designs" product status designation, indicating manufacturer discontinuation or obsolescence trajectory. These parts should not be selected for new circuit designs.

Compliance Consideration:

1N5420 (Microchip Technology) is RoHS non-compliant and should not be used in applications requiring RoHS3 certification.

Frequently Asked Questions (FAQ)

Q: Can 1N5406-E3/54 replace 1N5406-G directly?

A: Yes. Both parts share identical electrical specifications (600 V, 3 A, standard recovery speed) and DO-201AD packaging. The primary difference is manufacturer (Vishay vs. Comchip Technology) and forward voltage tolerance (1.2 V vs. 1 V at 3 A), which is within acceptable circuit design margins.

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

A: Standard recovery diodes (>500ns) exhibit slower reverse recovery time, suitable for low-frequency rectification and general-purpose applications. Fast recovery diodes (≤500ns) have shorter reverse recovery times, reducing switching losses in high-frequency switching power supplies. Both types are electrically compatible at 600 V / 3 A ratings but may produce different circuit performance characteristics.

Q: Can I use 60S6-TP (6 A) instead of 1N5406-G (3 A)?

A: Yes, for uprating purposes. The 60S6-TP maintains 600 V reverse voltage and DO-201AD packaging with doubled current capacity. This substitution is suitable when circuit design requires additional current margin or when the application current approaches the 3 A limit of the original part.

Q: Why is 1N5406RLG marked "Not For New Designs"?

A: "Not For New Designs" designation indicates the manufacturer has discontinued active development and recommends alternative parts for new circuit designs. Existing inventory may remain available, but long-term supply cannot be guaranteed. New designs should select from Active status alternatives.

Q: Are all substitute parts RoHS3 compliant?

A: No. 1N5420 (Microchip Technology) is RoHS non-compliant. All other listed substitutes are RoHS3 compliant. Verify compliance requirements for your application before part selection.

Q: What is the significance of operating temperature range differences?

A: The 1N5406-G operates from -65°C to 125°C. Substitute parts with extended ranges (e.g., -65°C to 175°C for MUR460RLG) provide additional thermal margin but do not affect substitution compatibility. Select based on application thermal requirements.

Q: Can I use MUR460RLG (4 A) in place of 1N5406-G (3 A)?

A: Yes. MUR460RLG maintains 600 V reverse voltage and provides 4 A current capacity with fast recovery characteristics. The higher current rating and extended temperature range (-65°C to 175°C) make this suitable for applications requiring enhanced performance specifications.

Q: What packaging differences exist between DO-201AD and DO-27?

A: DO-201AD and DO-27 are equivalent axial through-hole packages with identical mechanical form factors and pin spacing. Parts specified as either DO-201AD or DO-27 are mechanically interchangeable in PCB layouts designed for axial component mounting.

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