UG5HT-E3/45 Equivalent & Substitute Rectifier Diodes

Part Overview

The Vishay General Semiconductor UG5HT-E3/45 is a 500V, 5A general-purpose fast recovery diode in a TO-220AC through-hole package, classified under rectifier diodes. The product status is obsolete, making it necessary to identify direct substitute models for ongoing or new designs requiring comparable electrical and mechanical characteristics. Sourcing alternative part numbers ensures continued manufacturability, compliance, and inventory availability for critical designs.

Key Parameters

Parameter	UG5HT-E3/45
Category	Diodes, Rectifiers
Voltage - DC Reverse (Vr) (Max)	500 V
Current - Average Rectified (Io)	5A
Voltage - Forward (Vf) (Max) @ If	1.75 V @ 5 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	50 ns
Current - Reverse Leakage @ Vr	30 µA @ 500 V
Mounting Type	Through Hole
Package / Case	TO-220-2
Supplier Device Package	TO-220AC
Operating Temperature - Junction	-55°C ~ 150°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitute and equivalent rectifier diodes are determined based on strict equivalency of key parameters: diode operating voltage (Vr), average rectified current (Io), forward voltage drop (Vf) at specified current, recovery speed and reverse recovery time (trr), reverse leakage current, mounting type, and package compatibility. Alternate parts must match or exceed original device values in these fields, and maintain equivalent compliance and environmental ratings (RoHS, REACH, MSL).

Key parameters for substitution:

Category: Diodes, Rectifiers
Voltage - DC Reverse (Vr) (Max)
Current - Average Rectified (Io)
Voltage - Forward (Vf) (Max) @ If
Speed and trr
Current - Reverse Leakage @ Vr
Mounting Type & Package/Case
Compliance (RoHS, REACH, MSL)

Parameter Comparison

Parameter	UG5HT-E3/45	VS-ETH0806-M3	STTH5L06D
Manufacturer	Vishay General Semiconductor	Vishay General Semiconductor	STMicroelectronics
Voltage - DC Reverse (Vr) (Max)	500 V	600 V	600 V
Current - Average Rectified (Io)	5A	8A	5A
Voltage - Forward (Vf) (Max) @ If	1.75 V @ 5 A	2.65 V @ 8 A	1.3 V @ 5 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	50 ns	21 ns	95 ns
Current - Reverse Leakage @ Vr	30 µA @ 500 V	12 µA @ 600 V	5 µA @ 600 V
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	TO-220-2	TO-220-2	TO-220-2
Supplier Device Package	TO-220AC	TO-220AC	TO-220AC
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

The UG5HT-E3/45 is designated obsolete. Both substitute parts, VS-ETH0806-M3 and STTH5L06D, have active product statuses and maintain equivalent RoHS 3 compliance, REACH unaffected status, and MSL 1 (Unlimited) ratings. Selection within the substitute group may be based on product availability and compliance documentation as all devices meet the environmental and regulatory requirements provided.

Frequently Asked Questions (FAQ)

Q1: What package type should be used to replace the UG5HT-E3/45 in an existing PCB layout?
A1: All substitutes, including VS-ETH0806-M3 and STTH5L06D, have the same TO-220-2 package with TO-220AC supplier device package and are suitable for through-hole mounting.

Q2: Are the substitute parts compliant with RoHS and REACH requirements?
A2: All listed substitutes are ROHS3 compliant and REACH unaffected.

Q3: Is it necessary to verify performance parameters such as voltage, current, and recovery time when substituting?
A3: Substitutes are selected based on matching or exceeding Voltage - DC Reverse (Vr), Current - Average Rectified (Io), Voltage - Forward (Vf) (Max) @ If, speed classification, reverse recovery time, and leakage current parameters as provided.

Q4: Are there differences in environmental ratings between the substitutes and the original part?
A4: All devices have equivalent RoHS status, REACH status, and MSL ratings per provided data.

Q5: Why is substitution required for UG5HT-E3/45?
A5: The UG5HT-E3/45 is obsolete, requiring equivalent and compliant rectifier diodes for operational and sourcing continuity.

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