UG4D-M3/54 Equivalent & Substitute Parts

Part Overview

The UG4D-M3/54 is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, classified within the Diodes, Rectifiers category. This through-hole component operates at 200 V DC reverse voltage with a 4 A average rectified current rating and features fast recovery characteristics. The part is currently in active product status and maintains full RoHS3 compliance. Substitute parts are identified to address packaging format availability, inventory requirements, or supply chain considerations while maintaining identical electrical performance specifications.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	200 V
Current - Average Rectified (Io)	4 A
Voltage - Forward (Vf) (Max) @ If	950 mV @ 4 A
Reverse Recovery Time (trr)	30 ns
Current - Reverse Leakage @ Vr	5 µA @ 200 V
Capacitance @ Vr, F	20 pF @ 4 V, 1 MHz
Operating Temperature - Junction	-55°C ~ 150°C
Package / Case	DO-201AD, Axial
Mounting Type	Through Hole
Speed Classification	Fast Recovery ≤ 500 ns, > 200 mA (Io)

Substitute Part Grouping Explanation

The UG4D-M3/54 and its identified substitute are grouped based on electrical parameter equivalence and mechanical compatibility. Both parts share the same base product number (UG4) and maintain identical electrical specifications across all critical parameters: reverse voltage rating, average rectified current, forward voltage drop, reverse recovery time, reverse leakage current, and junction temperature range. The primary distinction between these parts lies in packaging format: the main part is supplied in Tape & Reel (TR) format, while the substitute is supplied in Cut Tape (CT) format. Both utilize the DO-201AD axial through-hole package, ensuring mechanical and electrical interchangeability in circuit applications. Substitution is valid when packaging format does not constrain the application requirement.

Parameter Comparison

Parameter	UG4D-M3/54	UG4D-E3/54	Match Status
Manufacturer	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division	Identical
Category	Diodes, Rectifiers	Diodes, Rectifiers	Identical
Voltage - DC Reverse (Vr) (Max)	200 V	200 V	Identical
Current - Average Rectified (Io)	4 A	4 A	Identical
Voltage - Forward (Vf) (Max) @ If	950 mV @ 4 A	950 mV @ 4 A	Identical
Reverse Recovery Time (trr)	30 ns	30 ns	Identical
Current - Reverse Leakage @ Vr	5 µA @ 200 V	5 µA @ 200 V	Identical
Capacitance @ Vr, F	20 pF @ 4 V, 1 MHz	20 pF @ 4 V, 1 MHz	Identical
Operating Temperature - Junction	-55°C ~ 150°C	-55°C ~ 150°C	Identical
Package / Case	DO-201AD, Axial	DO-201AD, Axial	Identical
Mounting Type	Through Hole	Through Hole	Identical
Speed Classification	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Identical
Product Status	Active	Active	Identical
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Identical
Packaging Format	Tape & Reel (TR)	Cut Tape (CT)	Different

Engineering Selection Recommendations

Both the UG4D-M3/54 and UG4D-E3/54 are active products with full RoHS3 compliance and REACH unaffected status. Selection between these parts is determined by packaging format requirements rather than electrical performance. The UG4D-M3/54 in Tape & Reel format is suitable for high-volume automated assembly processes. The UG4D-E3/54 in Cut Tape format accommodates lower-volume applications, manual assembly operations, or situations where component-level inventory management is preferred. Both parts maintain identical electrical characteristics and thermal operating ranges, ensuring direct functional equivalence in circuit design. Compliance certifications (RoHS3, REACH, EAR99 ECCN classification) are equivalent across both part numbers.

Frequently Asked Questions (FAQ)

Q: Can UG4D-E3/54 be used as a direct replacement for UG4D-M3/54 in production assembly?

A: Yes. Both parts are electrically and mechanically identical. The UG4D-E3/54 can replace the UG4D-M3/54 in any circuit application. The difference is packaging format: UG4D-M3/54 arrives in Tape & Reel format optimized for automated pick-and-place equipment, while UG4D-E3/54 arrives in Cut Tape format. Assembly method compatibility must be evaluated based on your production equipment capabilities.

Q: Are there any electrical performance differences between these two part numbers?

A: No. Both parts share identical electrical specifications: 200 V reverse voltage rating, 4 A average rectified current, 950 mV forward voltage drop at 4 A, 30 ns reverse recovery time, and -55°C to 150°C operating temperature range. Electrical performance is equivalent.

Q: What is the significance of the packaging format difference?

A: Packaging format affects supply chain logistics and assembly process compatibility. Tape & Reel (TR) format is standard for automated assembly lines with reel-fed component placement systems. Cut Tape (CT) format is used for manual assembly, lower-volume production, or component-level inventory management. The physical component and its performance remain identical.

Q: Do both parts meet the same compliance requirements?

A: Yes. Both UG4D-M3/54 and UG4D-E3/54 are RoHS3 compliant, REACH unaffected, and classified under ECCN EAR99. Compliance status is identical across both part numbers.

Q: Can I mix UG4D-M3/54 and UG4D-E3/54 in the same circuit board design?

A: Yes. Since both parts are electrically and mechanically identical, they can be used interchangeably within the same design. However, assembly process considerations may apply depending on your production equipment and supply chain strategy.

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