UF5404GP-AP Equivalent & Substitute Parts

Part Overview

The UF5404GP-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 through-hole DO-201AD axial package. This component is classified as Active product status and complies with ROHS3 and REACH standards. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, supply chain considerations, or application-specific packaging preferences.

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
Reverse Recovery Time (trr)	50	ns
Current - Reverse Leakage @ Vr	10 @ 400 V	µA
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 UF5404GP-AP are identified based on strict electrical and mechanical parameter equivalence. The following criteria determine substitution eligibility:

Critical Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 400 V
Current - Average Rectified (Io): 3 A
Voltage - Forward (Vf) (Max) @ If: 1.3 V @ 3 A
Reverse Recovery Time (trr): 50 ns
Current - Reverse Leakage @ Vr: 10 µA @ 400 V
Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
Package / Case: DO-201AD, Axial
Mounting Type: Through Hole
Operating Temperature - Junction: -55°C to 150°C
RoHS Status: ROHS3 Compliant

The HER305G A0G from Taiwan Semiconductor Corporation meets all critical electrical parameters and mechanical requirements, differing only in packaging format (Cut Tape versus Tape & Box) and minor capacitance specification (60 pF versus 75 pF at 4 V, 1 MHz), which does not affect functional equivalence in standard rectification applications.

Parameter Comparison

Parameter	UF5404GP-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
Reverse Recovery Time (trr)	50 ns	50 ns	Equivalent
Current - Reverse Leakage @ Vr	10 µA @ 400 V	10 µA @ 400 V	Equivalent
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Equivalent
Capacitance @ Vr, F	75 pF @ 4 V, 1 MHz	60 pF @ 4 V, 1 MHz	Non-Critical Variance
Package / Case	DO-201AD, Axial	DO-201AD, Axial	Equivalent
Mounting Type	Through Hole	Through Hole	Equivalent
Operating Temperature - Junction	-55°C to 150°C	-55°C to 150°C	Equivalent
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Packaging Format	Tape & Box (TB)	Cut Tape (CT)	Different Format

Engineering Selection Recommendations

Both the UF5404GP-AP and HER305G A0G are Active product status components with full ROHS3 compliance and REACH unaffected status. Selection between these parts is determined by packaging and supply availability requirements rather than electrical performance differences.

UF5404GP-AP is appropriate for applications requiring Tape & Box packaging format with 868 units currently in stock inventory.

HER305G A0G is appropriate for applications compatible with Cut Tape packaging format with 1779 units currently in stock inventory. This substitute provides equivalent electrical performance and mechanical compatibility while offering higher inventory availability.

Both components are suitable for general-purpose rectification circuits operating within the specified voltage and current ratings. The minor capacitance variance (60 pF versus 75 pF) does not affect standard rectifier diode functionality in power supply and switching applications.

Frequently Asked Questions (FAQ)

Q: Can HER305G A0G replace UF5404GP-AP in my circuit?

A: Yes. The HER305G A0G meets all critical electrical parameters: 400 V reverse voltage rating, 3 A average rectified current, 1.3 V forward voltage drop at 3 A, 50 ns reverse recovery time, and identical operating temperature range. Both components use the DO-201AD through-hole axial package and are mechanically compatible.

Q: What is the difference between Tape & Box and Cut Tape packaging?

A: Tape & Box (TB) packaging provides components on tape with a protective box for storage and handling. Cut Tape (CT) packaging provides components on tape without the box. Both formats contain the same component in the same package. Selection depends on your assembly process and storage requirements.

Q: Are there any electrical performance differences between these parts?

A: The only non-critical variance is capacitance specification: UF5404GP-AP is rated at 75 pF and HER305G A0G at 60 pF, both measured at 4 V and 1 MHz. This difference does not affect rectifier diode performance in standard applications.

Q: Do both parts meet the same compliance standards?

A: Yes. Both UF5404GP-AP and HER305G A0G are ROHS3 compliant, REACH unaffected, and classified as Active product status with identical ECCN (EAR99) and HTSUS (8541.10.0080) codes.

Q: What is the reverse recovery time and why does it matter?

A: Reverse recovery time (trr) is 50 ns for both parts. This parameter defines how quickly the diode stops conducting when reverse bias is applied. Both components are classified as Fast Recovery diodes, suitable for switching power supplies and high-frequency rectification circuits.

Q: Can I use these diodes in high-temperature applications?

A: Both components operate across the junction temperature range of -55°C to 150°C, supporting industrial and automotive temperature environments within this specification.

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