Equivalent & Substitute Parts for 6A05-T

Part Overview

The 6A05-T is a general-purpose rectifier diode manufactured by Diodes Incorporated, rated for 50 V DC reverse voltage and 6 A average rectified current in an R-6 axial through-hole package. This part operates across a junction temperature range of -65°C to 175°C and exhibits standard recovery characteristics with forward voltage of 900 mV at 6 A.

The 6A05-T is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for new production runs, repairs, and system upgrades. Active alternatives with matching or superior electrical characteristics are available from multiple manufacturers.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	50	V
Current - Average Rectified (Io)	6	A
Voltage - Forward (Vf) (Max) @ If	900 mV @ 6 A	mV @ A
Speed	Standard Recovery >500ns, > 200mA (Io)	-
Current - Reverse Leakage @ Vr	10 µA @ 600 V	µA @ V
Mounting Type	Through Hole	-
Package / Case	R-6, Axial	-
Operating Temperature - Junction	-65°C ~ 175°C	°C
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution of the 6A05-T is determined by the following critical parameters:

Electrical Compatibility Requirements:

Voltage - DC Reverse (Vr) (Max): Must equal or exceed 50 V
Current - Average Rectified (Io): Must equal or exceed 6 A
Mounting Type: Must be Through Hole
Package / Case: Must be R-6 Axial or mechanically equivalent

Compliance and Status Considerations:

Product Status: Active alternatives are preferred over obsolete or not-for-new-designs classifications
RoHS Status: ROHS3 compliance is maintained across all primary substitutes
Operating Temperature Range: Must accommodate the application's thermal requirements

Substitute parts are grouped into two categories:

Category 1: Direct Electrical and Mechanical Equivalents (6 A Rating, R-6 Package) These parts maintain identical current ratings and package form factors, ensuring direct board-level compatibility without design modification.

Category 2: Functional Alternatives (Lower Current Ratings) These parts meet the 50 V reverse voltage requirement but operate at reduced current ratings (1.3 A to 3 A). Selection from this category requires circuit-level current analysis to confirm adequacy.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [mV @ A]	Speed	Package	Product Status	RoHS Status
6A05-T	Diodes Incorporated	50	6	900 @ 6	Standard Recovery >500ns	R-6, Axial	Obsolete	ROHS3 Compliant
6A005-G	Comchip Technology	50	6	1000 @ 6	Standard Recovery >500ns	R-6, Axial	Active	ROHS3 Compliant
6A005B-G	Comchip Technology	50	6	1000 @ 6	Standard Recovery >500ns	R-6, Axial	Active	ROHS3 Compliant
6A05-TP	Micro Commercial Co	50	6	950 @ 6	Standard Recovery >500ns	R-6, Axial	Not For New Designs	ROHS3 Compliant
FR601GP-AP	Micro Commercial Co	50	6	1300 @ 6	Fast Recovery ≤500ns	R-6, Axial	Active	ROHS3 Compliant
GI750-E3/73	Vishay General Semiconductor	50	6	900 @ 6	Standard Recovery >500ns	P600, Axial	Active	ROHS3 Compliant
GI750-E3/54	Vishay General Semiconductor	50	6	900 @ 6	Standard Recovery >500ns	P600, Axial	Active	ROHS3 Compliant
HER601G B0G	Taiwan Semiconductor Corporation	50	6	1000 @ 6	Fast Recovery ≤500ns	R-6, Axial	Active	ROHS3 Compliant
HER601GP-AP	Micro Commercial Co	50	6	1100 @ 6	Fast Recovery ≤500ns	R-6, Axial	Active	ROHS3 Compliant
1N5807	Microchip Technology	50	3	875 @ 4	Fast Recovery ≤500ns	B, Axial	Active	RoHS non-compliant
1N6076	Microchip Technology	50	1.3	1760 @ 18.8	Fast Recovery ≤500ns	A, Axial	Active	RoHS non-compliant

Engineering Selection Recommendations

Primary Substitutes (Direct Replacement - Active Status)

For applications requiring direct board-level compatibility without design modification, the following active parts are recommended:

6A005-G (Comchip Technology): Maintains R-6 axial package, 6 A rating, 50 V reverse voltage, and ROHS3 compliance. Forward voltage is 1000 mV at 6 A, representing a 100 mV increase over the original specification. Standard recovery characteristics match the 6A05-T.
6A005B-G (Comchip Technology): Identical electrical and mechanical specifications to 6A005-G, differentiated by bulk packaging. Suitable for high-volume production environments.
HER601G B0G (Taiwan Semiconductor Corporation): Maintains R-6 axial package and 6 A rating with 50 V reverse voltage. Implements fast recovery technology (≤500ns) with 50 ns reverse recovery time, reducing switching losses compared to the standard recovery 6A05-T. Forward voltage is 1000 mV at 6 A. ROHS3 compliant.
HER601GP-AP (Micro Commercial Co): R-6 axial package, 6 A rating, 50 V reverse voltage. Fast recovery technology with 50 ns reverse recovery time. Forward voltage is 1100 mV at 6 A. ROHS3 compliant.

Secondary Substitutes (Package Variation - Active Status)

GI750-E3/73 and GI750-E3/54 (Vishay General Semiconductor): Both maintain 50 V reverse voltage and 6 A current rating with standard recovery characteristics and 900 mV forward voltage matching the original part. Package is P600 axial instead of R-6, requiring mechanical board layout verification. ROHS3 compliant.

Conditional Substitutes (Not Recommended for New Designs)

6A05-TP (Micro Commercial Co): Classified as "Not For New Designs." Although electrically compatible with 50 V, 6 A specifications and R-6 package, this status indicates manufacturer discontinuation plans. Use only for legacy system maintenance.

Functional Alternatives (Current Derating Required)

1N5807 (Microchip Technology): 50 V reverse voltage, 3 A current rating. Requires circuit analysis to confirm adequacy for 6 A applications. Fast recovery technology. RoHS non-compliant.
1N6076 (Microchip Technology): 50 V reverse voltage, 1.3 A current rating. Significant current derating required. Fast recovery technology. RoHS non-compliant.

Frequently Asked Questions (FAQ)

Q: Can 6A005-G directly replace 6A05-T without PCB modification?

A: Yes. Both parts share identical R-6 axial through-hole package geometry, 50 V reverse voltage rating, and 6 A current rating. The 100 mV increase in forward voltage (1000 mV vs. 900 mV at 6 A) is within typical design margins for general-purpose rectifier applications. No PCB layout changes are required.

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

A: Both parts are electrically and mechanically identical. The difference is packaging format: 6A005-G is supplied in Tape & Box (TB) format, while 6A005B-G is supplied in Bulk format. Selection depends on production volume and inventory management requirements.

Q: Why are GI750-E3/73 and GI750-E3/54 listed as substitutes if they use a different package (P600 vs. R-6)?

A: Both parts meet the electrical requirements (50 V, 6 A, standard recovery) and are mechanically compatible through-hole axial diodes. However, the P600 package has different physical dimensions than R-6. Board-level verification is required to confirm mechanical fit before implementation. These parts are suitable for new designs where PCB layout can be adjusted.

Q: What is the advantage of HER601G B0G over 6A05-T?

A: HER601G B0G implements fast recovery technology with 50 ns reverse recovery time, compared to the standard recovery >500ns specification of 6A05-T. This reduces switching losses and heat generation in high-frequency applications. Both maintain R-6 package compatibility and 6 A rating. HER601G B0G is active status, whereas 6A05-T is obsolete.

Q: Can I use 1N5807 as a substitute for 6A05-T?

A: 1N5807 meets the 50 V reverse voltage requirement but is rated for only 3 A average rectified current, compared to 6 A for 6A05-T. Use of 1N5807 requires circuit-level analysis to confirm that the application does not exceed 3 A continuous current. Additionally, 1N5807 is RoHS non-compliant, which may conflict with system-level compliance requirements.

Q: Why is 6A05-TP marked as "Not For New Designs"?

A: "Not For New Designs" status indicates that the manufacturer (Micro Commercial Co) has announced discontinuation or transition plans for this part. While electrically compatible with 6A05-T, this classification restricts its use to legacy system maintenance and repair. For new product development, select from active-status alternatives such as 6A005-G, HER601G B0G, or GI750-E3/73.

Q: Are all substitute parts ROHS3 compliant?

A: No. The primary active substitutes (6A005-G, 6A005B-G, HER601G B0G, HER601GP-AP, GI750-E3/73, GI750-E3/54) are ROHS3 compliant. However, 1N5807 and 1N6076 are RoHS non-compliant. Compliance requirements must be verified against system-level specifications before part selection.

Q: What is the operating temperature range difference between 6A05-T and its substitutes?

A: 6A05-T operates from -65°C to 175°C junction temperature. Most active substitutes operate from -55°C to 150°C (6A005-G, 6A005B-G, 6A05-TP, HER601G B0G, HER601GP-AP) or -50°C to 150°C (GI750-E3/73, GI750-E3/54). Applications requiring the full -65°C to 175°C range must confirm substitute part adequacy or select alternatives with matching temperature specifications.

Q: What does "Standard Recovery >500ns" mean compared to "Fast Recovery ≤500ns"?

A: Recovery speed refers to reverse recovery time (trr), the time required for a diode to stop conducting after the applied voltage reverses. Standard recovery (>500ns) is suitable for low-frequency and DC rectification applications. Fast recovery (≤500ns, typically 30-150 ns) reduces switching losses and is preferred for high-frequency switching applications. Selection depends on circuit operating frequency and efficiency requirements.

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