Equivalent & Substitute Parts for 6A05 General Purpose Rectifier Diode

Part Overview

The Micro Commercial Co 6A05 is a general purpose rectifier diode rated for 50 V DC reverse voltage and 6 A average rectified current in an R-6 axial through-hole package. This component is classified as obsolete, indicating it is no longer in active production. Identification of equivalent and substitute parts is necessary to support ongoing maintenance, repair, and legacy system support where the original 6A05 component is no longer readily available or where design updates are required.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	50	V
Current - Average Rectified (Io)	6	A
Voltage - Forward (Vf) (Max) @ If	950 mV @ 6 A	mV
Speed	Standard Recovery >500ns, > 200mA (Io)	—
Current - Reverse Leakage @ Vr	10	µA @ 50 V
Mounting Type	Through Hole	—
Package / Case	R-6, Axial	—
Operating Temperature - Junction	-55°C ~ 125°C	°C
RoHS Status	RoHS non-compliant	—

Substitute Part Grouping Explanation

Substitution of the 6A05 rectifier diode is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 50 V minimum
Current - Average Rectified (Io): 6 A minimum
Mounting Type: Through Hole
Package compatibility: R-6 axial or equivalent form factor

Secondary Considerations:

Forward voltage drop (Vf) at rated current
Recovery speed classification (Standard or Fast Recovery)
Reverse leakage current
Operating temperature range
RoHS compliance status

Parts are grouped into three categories based on substitution suitability:

Direct Substitutes (Same Electrical and Package Specifications): Parts that maintain identical or superior electrical ratings within the R-6 axial package form factor, enabling direct replacement without circuit modification.

Upgrade Substitutes (Enhanced Performance): Parts that exceed the original specifications in recovery speed, temperature range, or compliance status while maintaining electrical and mechanical compatibility.

Similar Substitutes (Reduced Current Rating): Parts that share the 50 V voltage rating and through-hole mounting but with lower current ratings, suitable only for applications where the full 6 A rating is not required.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io	Vf @ If	Speed	Package	Temp Range	RoHS Status	Product Status
6A05	Micro Commercial Co	50 V	6 A	950 mV @ 6 A	Standard >500ns	R-6, Axial	-55°C ~ 125°C	Non-compliant	Obsolete
6A05-TP	Micro Commercial Co	50 V	6 A	950 mV @ 6 A	Standard >500ns	R-6, Axial	-55°C ~ 125°C	ROHS3 Compliant	Not For New Designs
HER601G A0G	Taiwan Semiconductor Corporation	50 V	6 A	1 V @ 6 A	Fast ≤500ns	R-6, Axial	-55°C ~ 150°C	ROHS3 Compliant	Active
1N5807	Microchip Technology	50 V	3 A	875 mV @ 4 A	Fast ≤500ns	B, Axial	-65°C ~ 175°C	Non-compliant	Active
1N6076	Microchip Technology	50 V	1.3 A	1.76 V @ 18.8 A	Fast ≤500ns	A, Axial	-65°C ~ 155°C	Non-compliant	Active
6A005-G	Comchip Technology	50 V	6 A	1 V @ 6 A	Standard >500ns	R-6, Axial	-55°C ~ 125°C	ROHS3 Compliant	Active
6A005B-G	Comchip Technology	50 V	6 A	1 V @ 6 A	Standard >500ns	R-6, Axial	-55°C ~ 125°C	ROHS3 Compliant	Active
GI750-E3/54	Vishay General Semiconductor - Diodes Division	50 V	6 A	900 mV @ 6 A	Standard >500ns	P600, Axial	-50°C ~ 150°C	ROHS3 Compliant	Active
GI750-E3/73	Vishay General Semiconductor - Diodes Division	50 V	6 A	900 mV @ 6 A	Standard >500ns	P600, Axial	-50°C ~ 150°C	ROHS3 Compliant	Active

Engineering Selection Recommendations

Direct Replacement (Preferred for Legacy Support):

The 6A05-TP from Micro Commercial Co provides direct electrical and mechanical compatibility with the original 6A05. This part maintains identical voltage, current, and package specifications while offering ROHS3 compliance. The 6A05-TP is suitable for applications requiring exact form-factor and performance matching, though it is designated as "Not For New Designs."

Active Production Alternatives (Recommended for New Designs):

The 6A005-G and 6A005B-G from Comchip Technology are active production parts that match the 6A05 electrical specifications (50 V, 6 A, R-6 axial package) and provide ROHS3 compliance. These parts are functionally equivalent and suitable for both replacement and new design applications.

The GI750-E3/73 and GI750-E3/54 from Vishay General Semiconductor provide equivalent electrical performance with a P600 axial package form factor. These parts maintain 50 V and 6 A ratings with ROHS3 compliance and extended temperature range (-50°C ~ 150°C). Package form factor differences require mechanical verification for board layout compatibility.

Performance Enhancement Option:

The HER601G A0G from Taiwan Semiconductor Corporation offers superior performance characteristics including fast recovery speed (≤500ns), extended temperature range (-55°C ~ 150°C), and ROHS3 compliance. This part is suitable for applications where improved switching performance and thermal margin are beneficial, though it introduces a marginal increase in forward voltage drop (1 V versus 950 mV at 6 A).

Limited Current Applications:

The 1N5807 (3 A) and 1N6076 (1.3 A) from Microchip Technology are suitable only for applications where the full 6 A rating is not required. These parts share the 50 V voltage rating and through-hole mounting but are not direct substitutes for the 6A05 due to reduced current capacity.

Frequently Asked Questions (FAQ)

Q: Can the 6A05-TP be used as a direct replacement for the 6A05?

A: Yes. The 6A05-TP maintains identical electrical specifications (50 V, 6 A) and R-6 axial package form factor. The primary difference is packaging format (Cut Tape versus bulk) and ROHS3 compliance status. No circuit modifications are required.

Q: What is the difference between the 6A005-G and 6A005B-G?

A: Both parts are from Comchip Technology with identical electrical specifications (50 V, 6 A, R-6 axial). The difference is packaging: 6A005-G is supplied in Tape & Box format, while 6A005B-G is supplied in Bulk format. Electrical performance is equivalent.

Q: Why do the GI750-E3/73 and GI750-E3/54 have different package designations (P600 versus R-6)?

A: Both parts use P600 axial package form factor, which is physically similar to but distinct from the R-6 package. While both are through-hole axial diodes with equivalent electrical specifications, mechanical fit on the PCB must be verified before substitution.

Q: Is the HER601G A0G suitable for direct replacement in all applications?

A: The HER601G A0G provides equivalent or superior electrical performance and is mechanically compatible (R-6 axial package). However, the forward voltage drop is slightly higher (1 V versus 950 mV at 6 A). Applications sensitive to forward voltage drop characteristics should be evaluated before substitution.

Q: Can the 1N5807 or 1N6076 be used in place of the 6A05?

A: The 1N5807 and 1N6076 share the 50 V voltage rating and through-hole mounting but have significantly lower current ratings (3 A and 1.3 A respectively). These parts are suitable only for applications where the circuit current requirement does not exceed their rated capacity. They are not suitable for applications requiring the full 6 A rating of the 6A05.

Q: What is the significance of RoHS compliance status in selecting a substitute?

A: RoHS compliance indicates conformance to restrictions on hazardous substances in electrical and electronic equipment. The original 6A05 is RoHS non-compliant. Active production alternatives (6A005-G, 6A005B-G, HER601G A0G, GI750-E3/73, GI750-E3/54) are ROHS3 compliant, making them suitable for applications subject to RoHS regulations or customer requirements.

Q: Are there any temperature range considerations when selecting a substitute?

A: The original 6A05 operates from -55°C to 125°C. The HER601G A0G and Vishay GI750 series offer extended upper temperature limits (150°C), providing additional thermal margin. The 1N5807 offers the widest range (-65°C to 175°C). Application-specific thermal requirements should be evaluated when selecting among alternatives.

Q: What packaging formats are available for the substitute parts?

A: Substitute parts are available in multiple packaging formats: Cut Tape (CT), Bulk, and Tape & Box (TB). These formats affect handling, storage, and assembly processes but do not impact electrical performance. Selection should align with procurement and assembly requirements.

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