FR304GP-AP Equivalent & Substitute Parts

Part Overview

The FR304GP-AP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 400 V DC reverse voltage and 3 A average rectified current in a DO-201AD axial through-hole package. This component is classified as Active product status and complies with ROHS3 and REACH standards. Equivalent and substitute parts are identified based on matching electrical performance parameters and mechanical compatibility to support procurement flexibility, inventory management, and supply chain continuity.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	400	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	1.3 @ 3 A	V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Package / Case	DO-201AD, Axial	—
Mounting Type	Through Hole	—
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the FR304GP-AP are identified based on strict equivalence of the following critical parameters:

Voltage Rating: DC reverse voltage of 400 V (maximum)
Current Rating: Average rectified current of 3 A
Forward Voltage: Maximum 1.3 V at 3 A forward current
Speed Classification: Fast recovery diode with recovery time ≤ 500 ns at currents > 200 mA
Package Type: DO-201AD axial through-hole configuration
Mounting: Through-hole technology for PCB insertion
Temperature Range: Operating junction temperature from -55°C to 150°C
Compliance: ROHS3 and REACH compliance status

The HER305G A0G from Taiwan Semiconductor Corporation meets all these criteria and is classified as a parametric equivalent. Both parts share identical voltage, current, package, and temperature specifications, enabling direct functional substitution in circuit applications.

Parameter Comparison

Parameter	FR304GP-AP (Micro Commercial Co)	HER305G A0G (Taiwan Semiconductor Corporation)	Match Status
Voltage - DC Reverse (Vr) (Max)	400 V	400 V	Equivalent
Current - Average Rectified (Io)	3 A	3 A	Equivalent
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 3 A	1.3 V @ 3 A	Equivalent
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Equivalent
Reverse Recovery Time (trr)	150 ns	50 ns	HER305G A0G Superior
Current - Reverse Leakage @ Vr	5 µA @ 400 V	10 µA @ 400 V	FR304GP-AP Superior
Capacitance @ Vr, F	50 pF @ 4V, 1MHz	60 pF @ 4V, 1MHz	FR304GP-AP Lower
Package / Case	DO-201AD, Axial	DO-201AD, Axial	Equivalent
Mounting Type	Through Hole	Through Hole	Equivalent
Operating Temperature - Junction	-55°C ~ 150°C	-55°C ~ 150°C	Equivalent
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
REACH Status	REACH Unaffected	REACH Unaffected	Equivalent
Product Status	Active	Active	Equivalent

Engineering Selection Recommendations

Both the FR304GP-AP and HER305G A0G are Active product status components with full ROHS3 and REACH compliance. Selection between these parts is based on application-specific requirements within the following framework:

FR304GP-AP Selection Criteria:

Applications requiring lower reverse leakage current (5 µA vs. 10 µA at 400 V)
Circuits where lower junction capacitance (50 pF vs. 60 pF) is beneficial
Established supply chain preference for Micro Commercial Co components

HER305G A0G Selection Criteria:

Applications benefiting from faster reverse recovery time (50 ns vs. 150 ns)
Circuits requiring superior switching performance in high-frequency rectification
Procurement scenarios where Taiwan Semiconductor Corporation inventory availability is advantageous

Both parts satisfy identical voltage, current, temperature, and package requirements. The choice between them depends on whether the application prioritizes leakage current performance or switching speed performance, as these parameters differ between the two options while all primary electrical ratings remain equivalent.

Frequently Asked Questions (FAQ)

Q: Can the HER305G A0G directly replace the FR304GP-AP in existing designs?

A: Yes. Both parts share identical voltage ratings (400 V), current ratings (3 A), forward voltage characteristics (1.3 V @ 3 A), package type (DO-201AD axial), and operating temperature range (-55°C to 150°C). Direct substitution is supported from an electrical and mechanical standpoint.

Q: What are the differences between these two diodes?

A: The primary differences are reverse recovery time (FR304GP-AP: 150 ns; HER305G A0G: 50 ns), reverse leakage current (FR304GP-AP: 5 µA; HER305G A0G: 10 µA), and junction capacitance (FR304GP-AP: 50 pF; HER305G A0G: 60 pF). All other electrical and mechanical parameters are equivalent.

Q: Which part should I select for a new design?

A: Selection depends on application requirements. If switching speed is critical, the HER305G A0G with 50 ns recovery time is preferred. If minimizing reverse leakage current is important, the FR304GP-AP with 5 µA leakage is preferred. Both meet all primary circuit requirements for 400 V, 3 A rectification.

Q: Are both parts available in the same package?

A: Yes. Both the FR304GP-AP and HER305G A0G use the DO-201AD axial through-hole package, enabling identical PCB layout and assembly processes.

Q: Do both parts meet regulatory compliance requirements?

A: Yes. Both parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards for electronic component manufacturing and use.

Q: What is the difference between packaging types listed?

A: The FR304GP-AP is supplied in standard packaging, while the HER305G A0G is supplied in Cut Tape (CT) format. Both contain identical diode components in DO-201AD packages; the difference is in the delivery and handling format for manufacturing operations.

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