UES1305 Equivalent & Substitute Parts Reference

Part Overview

The UES1305 is a general-purpose rectifier diode manufactured by Microchip Technology, classified under the Diodes, Rectifiers category. It is specified for a maximum DC reverse voltage of 300V and an average rectified current of 3A, in a B, Axial through-hole package. This part features fast recovery with a reverse recovery time of 50ns, and has a maximum forward voltage drop of 1.25V at 3A.

The UES1305 is currently active; however, alternative models may be necessary due to RoHS status, availability, package preferences, or compliance requirements in some applications. Identifying qualified substitutes ensures continued sourcing and design flexibility.

Key Parameters

Parameter	UES1305
Manufacturer	Microchip Technology
Category	Diodes, Rectifiers
Voltage - DC Reverse (Vr) (Max)	300 V
Current - Average Rectified (Io)	3A
Voltage - Forward (Vf) (Max) @ If	1.25 V @ 3 A
Speed	Fast Recovery =< 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	50 ns
Current - Reverse Leakage @ Vr	20 µA @ 300 V
Mounting Type	Through Hole
Package / Case	B, Axial
Operating Temperature - Junction	-55°C ~ 150°C
RoHS Status	RoHS non-compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the UES1305 have been selected strictly based on the following matching parameters: voltage rating (DC Reverse Voltage), current rating (Average Rectified Current), forward voltage at rated current, recovery speed or reverse recovery time, through-hole mounting, and suitable package type. Only parts with equivalent or compatible electrical and mechanical specifications have been grouped as alternatives.

Key parameters considered:

Voltage - DC Reverse (Vr) (Max)
Current - Average Rectified (Io)
Voltage - Forward (Vf) (Max) @ If
Speed and Reverse Recovery Time (trr)
Mounting Type and Package / Case
Operating Temperature - Junction
Product compliance parameters (RoHS status, product status)

Parameter Comparison

Parameter	UES1305	1N5403-E3/54	UF5403-E3/54
Manufacturer	Microchip Technology	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division
Category	Diodes, Rectifiers	Diodes, Rectifiers	Diodes, Rectifiers
Voltage - DC Reverse (Vr) (Max)	300 V	300 V	300 V
Current - Average Rectified (Io)	3A	3A	3A
Voltage - Forward (Vf) (Max) @ If	1.25 V @ 3 A	1.2 V @ 3 A	1 V @ 3 A
Speed	Fast Recovery =< 500ns, > 200mA (Io)	Standard Recovery >500ns, > 200mA (Io)	Fast Recovery =< 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	50 ns	-	50 ns
Current - Reverse Leakage @ Vr	20 µA @ 300 V	5 µA @ 300 V	10 µA @ 300 V
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	B, Axial	DO-201AD, Axial	DO-201AD, Axial
Operating Temperature - Junction	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C
Product Status	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Selection should prioritize product status and compliance. The UES1305 is RoHS non-compliant, whereas both substitutes (1N5403-E3/54 and UF5403-E3/54) are ROHS3 compliant. All options are active and suitable for through-hole mounting, with operating temperatures from -55°C to 150°C. Only parts matching required compliance certifications and product status should be selected for final applications where environmental directives apply.

Frequently Asked Questions (FAQ)

Q1: What criteria are used to select substitute diodes for UES1305?
A1: Substitute diodes are selected based on voltage rating, current rating, forward voltage, recovery speed or reverse recovery time, mounting type, package compatibility, operating temperature, product status, and compliance certifications.

Q2: Are the DO-201AD and B, Axial packages mechanically compatible?
A2: Both are axial through-hole packages and are commonly used interchangeably in standard axial-lead circuit board layouts.

Q3: Can UF5403-E3/54 replace UES1305 in all applications?
A3: UF5403-E3/54 matches all critical electrical and mechanical parameters provided for UES1305, including recovery time, current, voltage, and mounting method.

Q4: What is the primary difference in RoHS compliance among listed parts?
A4: UES1305 is RoHS non-compliant, while 1N5403-E3/54 and UF5403-E3/54 are both ROHS3 compliant.

Q5: Do all substitutes operate over the same temperature range as UES1305?
A5: Yes, all listed substitute parts operate within the -55°C to 150°C junction temperature range.

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