HER603-AP Equivalent & Substitute Parts

Part Overview

The HER603-AP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 200 V DC reverse voltage and 6 A average rectified current in an R-6 axial through-hole package. This component is classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing design requirements and procurement needs. The part operates across a junction temperature range of -55°C to 150°C and complies with ROHS3 standards.

Substiute Parts

HER603-AP

Micro Commercial CoIn Stock: 1269HER603-AP Datasheet

Current PartRFQ

HER603GP-AP

Micro Commercial CoIn Stock: 1001HER603GP-AP Datasheet

DirectRFQ

6A02B-G

Comchip TechnologyIn Stock: 11516A02B-G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the HER603-AP is determined by strict equivalence across the following electrical and mechanical parameters:

Primary Equivalence Criteria:

• Voltage - DC Reverse (Vr) (Max): 200 V
• Current - Average Rectified (Io): 6 A
• Package / Case: R-6, Axial
• Mounting Type: Through Hole

Secondary Compatibility Parameters:

• Voltage - Forward (Vf) (Max) @ If: 1.1 V @ 6 A or lower
• Current - Reverse Leakage @ Vr: 10 µA @ 200 V or lower
• Operating Temperature - Junction: -55°C minimum and 150°C maximum or broader range
• RoHS Status: ROHS3 Compliant

Substitute parts are classified into two categories: direct equivalents (identical specifications) and similar alternatives (meeting all primary criteria with acceptable variations in secondary parameters).

Parameter Comparison

Engineering Selection Recommendations

HER603GP-AP (Direct Equivalent - Recommended Primary Substitute)

The HER603GP-AP is manufactured by Micro Commercial Co and maintains identical electrical and thermal specifications to the obsolete HER603-AP. This part is currently in active production status with 945 units in stock. All parameters match exactly, including voltage ratings, current capacity, forward voltage drop, recovery time, and operating temperature range. ROHS3 compliance and MSL rating are identical. This part represents a direct replacement with no design modifications required.

6A02B-G (Similar Alternative - Secondary Substitute)

The 6A02B-G is manufactured by Comchip Technology and meets all primary substitution criteria: 200 V reverse voltage, 6 A average rectified current, R-6 axial package, and through-hole mounting. This part is in active production with 1070 units in stock. Key differences include lower forward voltage (1 V versus 1.1 V at 6 A), standard recovery speed classification (versus fast recovery), and a reduced maximum junction temperature of 125°C (versus 150°C). ROHS3 compliance and MSL rating are maintained. This part is suitable for applications where the reduced maximum junction temperature does not constrain thermal design margins and where the lower forward voltage provides operational benefit.

Frequently Asked Questions (FAQ)

Q: Can HER603GP-AP be used as a direct replacement for HER603-AP?

A: Yes. The HER603GP-AP is a direct equivalent with identical electrical specifications, package configuration, and thermal ratings. No circuit modifications are required.

Q: What are the key differences between HER603GP-AP and 6A02B-G?

A: Both parts share identical voltage and current ratings and package type. The 6A02B-G has a lower forward voltage drop (1 V versus 1.1 V at 6 A), operates at standard recovery speed rather than fast recovery, and has a maximum junction temperature of 125°C instead of 150°C. The 6A02B-G is manufactured by Comchip Technology rather than Micro Commercial Co.

Q: Is the 6A02B-G suitable for all applications using HER603-AP?

A: The 6A02B-G is suitable for applications where the maximum junction temperature requirement does not exceed 125°C. Applications requiring operation at or near 150°C junction temperature require the HER603GP-AP or HER603-AP.

Q: Are all substitute parts RoHS compliant?

A: Yes. Both HER603GP-AP and 6A02B-G are ROHS3 compliant, matching the compliance status of the original HER603-AP.

Q: What is the package configuration for these parts?

A: All three parts use the R-6 axial through-hole package. This package type is identical across all substitutes, requiring no PCB layout modifications.

Q: Do the substitute parts have the same moisture sensitivity rating?

A: Yes. All parts carry MSL rating 1 (Unlimited), indicating no moisture sensitivity constraints for storage or handling.

Q: Which substitute part should be selected for new designs?

A: For new designs, HER603GP-AP is the recommended choice due to active production status, identical specifications to the original part, and availability of 945 units in stock. The 6A02B-G may be selected if the lower forward voltage or alternative sourcing provides design or procurement advantages, provided thermal requirements do not exceed 125°C junction temperature.