UG18CCT-E3/45 Equivalent & Substitute Parts

Part Overview

The UG18CCT-E3/45 is a diode array rectifier manufactured by Vishay General Semiconductor - Diodes Division. This component features a 1 Pair Common Cathode configuration rated for 150 V DC reverse voltage and 18 A average rectified current per diode. The device is packaged in a Through Hole TO-220-3 case suitable for high-current rectification applications.

The UG18CCT-E3/45 is classified as Obsolete. Locating equivalent substitute parts is necessary to support ongoing production requirements, maintenance operations, and system redesigns where this component is specified.

Substiute Parts

UG18CCT-E3/45

Vishay General Semiconductor - Diodes DivisionIn Stock: 1510UG18CCT-E3/45 Datasheet

Current PartRFQ

BYV32E-150,127

WeEn SemiconductorsIn Stock: 5159BYV32E-150,127 Datasheet

MFR RecommendedRFQ

STTH1602CT

STMicroelectronicsIn Stock: 44259STTH1602CT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the UG18CCT-E3/45 are selected based on the following critical parameters that determine functional compatibility:

Primary Compatibility Criteria:

• Diode Configuration: 1 Pair Common Cathode (pinout and functional topology)
• Mounting Type: Through Hole
• Package / Case: TO-220-3 (mechanical and thermal interface)
• Technology: Standard (rectifier diode technology class)

Electrical Performance Criteria:

• Voltage - DC Reverse (Vr) (Max): Equal to or greater than 150 V
• Current - Average Rectified (Io) (per Diode): Equal to or greater than 18 A
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
• Operating Temperature Range: Must support the application's thermal requirements

Substitute parts meeting these criteria can be directly substituted in applications where the UG18CCT-E3/45 is specified, provided the electrical performance envelope is maintained or exceeded.

Parameter Comparison

Engineering Selection Recommendations

BYV32E-150,127 (WeEn Semiconductors)

The BYV32E-150,127 is an Active product offering direct electrical and mechanical compatibility with the UG18CCT-E3/45. This substitute maintains the 150 V reverse voltage rating and exceeds the current requirement at 20 A per diode. The BYV32E-150,127 features improved reverse recovery time (25 ns versus 30 ns) and is ROHS3 Compliant with MSL 1 rating. This part is suitable for applications requiring the original 150 V / 18 A performance envelope.

STTH1602CT (STMicroelectronics)

The STTH1602CT is an Active product with enhanced voltage rating at 200 V reverse voltage and superior operating temperature capability (175°C maximum junction temperature). However, this substitute provides reduced current capacity at 10 A per diode, which is below the original 18 A specification. The STTH1602CT is suitable only for applications where the 18 A current requirement can be reduced or where the enhanced voltage margin and thermal performance provide system-level benefits. This part is ROHS3 Compliant with MSL 1 rating.

Both substitute parts maintain the 1 Pair Common Cathode configuration, Fast Recovery speed classification, and Through Hole TO-220-3 packaging required for direct mechanical and functional substitution.

Frequently Asked Questions (FAQ)

Q: Can the BYV32E-150,127 directly replace the UG18CCT-E3/45?

A: Yes. The BYV32E-150,127 maintains identical voltage and configuration specifications while exceeding the current rating. Both parts feature the same TO-220-3 package, 1 Pair Common Cathode configuration, and Fast Recovery speed classification. The BYV32E-150,127 is an Active product with current availability.

Q: Can the STTH1602CT directly replace the UG18CCT-E3/45?

A: The STTH1602CT provides mechanical and functional compatibility through the TO-220-3 package and 1 Pair Common Cathode configuration. However, the current rating is reduced from 18 A to 10 A. This substitute is suitable only for applications where the reduced current capacity does not exceed system requirements. The enhanced voltage rating (200 V) and operating temperature range (175°C) may provide additional design margin in specific applications.

Q: What is the significance of the TO-220-3 package specification?

A: The TO-220-3 package defines the mechanical interface, thermal characteristics, and pin configuration. All listed substitute parts use identical TO-220-3 packaging, ensuring compatibility with existing PCB layouts, heatsinking arrangements, and mounting hardware without modification.

Q: Are all substitute parts RoHS3 Compliant?

A: Yes. The BYV32E-150,127 and STTH1602CT are both ROHS3 Compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the environmental compliance profile of the original UG18CCT-E3/45.

Q: What is the difference between the reverse recovery times of these parts?

A: The UG18CCT-E3/45 specifies 30 ns reverse recovery time. The BYV32E-150,127 provides 25 ns and the STTH1602CT provides 26 ns. Faster reverse recovery time reduces switching losses and improves efficiency in high-frequency rectification applications. Both substitutes offer improved performance in this parameter.

Q: Why is the UG18CCT-E3/45 classified as Obsolete?

A: Obsolete status indicates the part is no longer manufactured by Vishay General Semiconductor - Diodes Division. The listed substitute parts are Active products with current manufacturing and distribution support, ensuring long-term availability for new designs and ongoing production requirements.