UGF15HT-E3/45 Equivalent & Substitute Parts

Part Overview

The UGF15HT-E3/45 is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 500 V DC reverse voltage and 15 A average rectified current. This component is packaged in a Through Hole ITO-220AC configuration with an isolated tab. The product is classified as obsolete, necessitating identification of active equivalent and substitute parts that maintain functional compatibility within specified electrical and mechanical parameters.

Substiute Parts

UGF15HT-E3/45

Vishay General Semiconductor - Diodes DivisionIn Stock: 1112UGF15HT-E3/45 Datasheet

Current PartRFQ

VS-ETH1506FP-M3

Vishay General Semiconductor - Diodes DivisionIn Stock: 2376VS-ETH1506FP-M3 Datasheet

MFR RecommendedRFQ

BYC15X-600,127

WeEn SemiconductorsIn Stock: 948BYC15X-600,127 Datasheet

MFR RecommendedRFQ

STTH15AC06FP

STMicroelectronicsIn Stock: 1359STTH15AC06FP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the UGF15HT-E3/45 is determined by the following critical parameters:

Mandatory Compatibility Criteria:

• Current rating: 15 A average rectified current
• Voltage rating: Minimum 500 V DC reverse voltage
• Mounting type: Through Hole configuration
• Package type: TO-220-2 Full Pack variants
• Speed classification: Fast Recovery ≤ 500ns, > 200mA (Io)

Acceptable Variation Parameters:

• Reverse voltage rating may exceed 500 V (higher voltage rating provides backward compatibility)
• Forward voltage drop may vary within the fast recovery diode classification
• Reverse recovery time may vary within fast recovery specification
• Reverse leakage current may vary
• Operating temperature range may exceed the original specification
• Product status transition from obsolete to active

All substitute parts identified maintain the 15 A current rating, Through Hole mounting, and TO-220-2 Full Pack package configuration. Voltage ratings of 500 V or higher satisfy the minimum requirement. All substitutes are classified as fast recovery diodes.

Parameter Comparison

Engineering Selection Recommendations

VS-ETH1506FP-M3 (Vishay General Semiconductor - Diodes Division)

This substitute is manufactured by the same original equipment manufacturer as the UGF15HT-E3/45. It provides 600 V reverse voltage rating, exceeding the original 500 V specification. The part is active in production status and ROHS3 compliant. The reverse recovery time of 29 ns is superior to the original 50 ns specification. Operating temperature range extends to 175°C, providing enhanced thermal margin. This part is available in bulk packaging with 2365 units in stock.

BYC15X-600,127 (WeEn Semiconductors)

This substitute maintains the original 500 V reverse voltage rating and 15 A current specification. It is active in production status and RoHS compliant. The part is supplied in tube packaging with 860 units in stock. Operating temperature maximum is 150°C, matching the original specification. Forward voltage drop is higher at 2.9 V compared to the original 1.75 V.

STTH15AC06FP (STMicroelectronics)

This substitute provides 600 V reverse voltage rating and maintains the 15 A current specification. It is active in production status and ROHS3 compliant. The forward voltage drop of 1.9 V is closest to the original specification among all substitutes. Operating temperature range extends to 175°C. Reverse leakage current is significantly lower at 2 µA compared to the original 30 µA. This part is available in tube packaging with 1278 units in stock.

Frequently Asked Questions (FAQ)

Q: Can the VS-ETH1506FP-M3 be used as a direct replacement for the UGF15HT-E3/45?

A: Yes. Both parts share identical 15 A current rating, Through Hole mounting, and TO-220-2 Full Pack configuration. The VS-ETH1506FP-M3 provides higher voltage rating (600 V vs. 500 V), which is acceptable for applications designed for 500 V operation. Both parts are ROHS3 compliant and manufactured by Vishay.

Q: What is the primary difference between the BYC15X-600,127 and STTH15AC06FP substitutes?

A: Both parts maintain 15 A current rating and Through Hole TO-220-2 Full Pack configuration. The BYC15X-600,127 maintains the original 500 V voltage rating, while the STTH15AC06FP provides 600 V rating. The STTH15AC06FP exhibits lower forward voltage drop (1.9 V vs. 2.9 V) and significantly lower reverse leakage current (2 µA vs. 200 µA).

Q: Are all substitute parts compatible with the original PCB layout?

A: All substitute parts use Through Hole mounting in TO-220-2 Full Pack configuration. Physical pin spacing and mounting hole dimensions are compatible with the original UGF15HT-E3/45 footprint. Isolated tab configurations are maintained in the BYC15X-600,127 and original part.

Q: What is the significance of the reverse recovery time differences?

A: Reverse recovery time (trr) is provided for reference. All parts are classified as fast recovery diodes with trr ≤ 500ns. The VS-ETH1506FP-M3 exhibits 29 ns, while BYC15X-600,127 and STTH15AC06FP exhibit 55 ns. All values satisfy fast recovery classification requirements.

Q: Which substitute offers the best thermal performance?

A: The VS-ETH1506FP-M3 and STTH15AC06FP both support operating temperature range to 175°C, compared to the original 150°C maximum. The BYC15X-600,127 maintains the original 150°C maximum operating temperature.

Q: Are all substitutes RoHS compliant?

A: Yes. The VS-ETH1506FP-M3 and STTH15AC06FP are ROHS3 compliant. The BYC15X-600,127 is RoHS compliant. All parts meet regulatory requirements for hazardous substance restrictions.