HER604-AP Equivalent & Substitute Parts

Part Overview

The HER604-AP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 300 V DC reverse voltage and 6 A average rectified current in an R-6 axial through-hole package. This component is classified as obsolete, making identification of active equivalent parts essential for ongoing design support and procurement continuity. The HER604-AP serves as a standard fast-recovery rectifier suitable for power supply and general rectification applications requiring these electrical specifications.

Substiute Parts

HER604-AP

Micro Commercial CoIn Stock: 862HER604-AP Datasheet

Current PartRFQ

HER604GP-AP

Micro Commercial CoIn Stock: 965HER604GP-AP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the HER604-AP is determined by electrical and mechanical parameter equivalence. The following parameters establish substitution validity:

Electrical Parameters (Critical):

• Voltage - DC Reverse (Vr) (Max): 300 V
• Current - Average Rectified (Io): 6 A
• Voltage - Forward (Vf) (Max) @ If: 1.1 V @ 6 A
• Reverse Recovery Time (trr): 50 ns
• Current - Reverse Leakage @ Vr: 10 µA @ 300 V
• Capacitance @ Vr, F: 100 pF @ 4 V, 1 MHz
• Speed Classification: Fast Recovery ≤ 500 ns, > 200 mA (Io)

Mechanical Parameters (Critical):

• Mounting Type: Through Hole
• Package / Case: R-6, Axial
• Operating Temperature - Junction: -55°C ~ 150°C

Parts meeting all these parameters are classified as direct equivalents and may be substituted without circuit redesign.

Parameter Comparison

Engineering Selection Recommendations

The HER604GP-AP is a direct electrical and mechanical equivalent to the HER604-AP. All critical electrical parameters, including reverse voltage rating, average rectified current, forward voltage drop, reverse recovery time, reverse leakage current, and junction capacitance, are identical. The mechanical package specification (R-6 axial through-hole) and operating temperature range are identical.

The primary distinction is product status: the HER604-AP is obsolete, while the HER604GP-AP is active. Both parts maintain ROHS3 compliance, identical moisture sensitivity classification (MSL 1), and equivalent export control designations (EAR99). The HER604GP-AP is suitable for direct substitution in applications currently using the HER604-AP, with no circuit modifications required.

Frequently Asked Questions (FAQ)

Q: Can the HER604GP-AP be used as a direct replacement for the HER604-AP?

A: Yes. The HER604GP-AP meets all electrical and mechanical specifications of the HER604-AP. All parameters including voltage rating, current rating, forward voltage, reverse recovery time, leakage current, capacitance, package type, and operating temperature range are identical.

Q: What is the difference between HER604-AP and HER604GP-AP?

A: The HER604-AP is classified as obsolete, while the HER604GP-AP is active. Both parts are manufactured by Micro Commercial Co and share identical electrical and mechanical specifications. The HER604GP-AP represents the current production equivalent.

Q: Are there any compliance or certification differences between these parts?

A: No. Both parts are ROHS3 compliant, carry MSL 1 (Unlimited) moisture sensitivity classification, and share the same ECCN (EAR99) and HTSUS (8541.10.0080) designations.

Q: Is the R-6 axial package compatible with existing PCB designs for the HER604-AP?

A: Yes. Both parts use the R-6 axial through-hole package. The mechanical footprint and lead spacing are identical, allowing direct board-level substitution without layout modifications.

Q: What is the operating temperature range for both parts?

A: Both the HER604-AP and HER604GP-AP operate across a junction temperature range of -55°C to 150°C.

Q: Are there any electrical performance differences in switching speed?

A: No. Both parts are classified as fast-recovery rectifiers with a reverse recovery time of 50 ns and meet the fast recovery specification of ≤ 500 ns for currents > 200 mA.