VT60M120CHM3/4W Equivalent & Substitute Parts

Part Overview

The VT60M120CHM3/4W is a Schottky diode array manufactured by Vishay General Semiconductor - Diodes Division. This component features a 1 Pair Common Cathode configuration rated for 120 V DC reverse voltage with 30 A average rectified current per diode. The part is housed in a TO-220-3 through-hole package and is classified as an Active product with AEC-Q101 automotive qualification. Substitute parts are identified when equivalent electrical and mechanical parameters are available from alternative manufacturers, enabling procurement flexibility while maintaining circuit performance specifications.

Substiute Parts

VT60M120CHM3/4W

Vishay General Semiconductor - Diodes DivisionIn Stock: 1224VT60M120CHM3/4W Datasheet

Current PartRFQ

STPS30L120CT

STMicroelectronicsIn Stock: 2486STPS30L120CT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the VT60M120CHM3/4W are identified based on the following critical parameters that determine functional equivalence:

Electrical Compatibility Criteria:

• Diode Configuration: 1 Pair Common Cathode (identical topology required)
• Technology: Schottky (same semiconductor technology)
• Voltage - DC Reverse (Vr) (Max): 120 V (voltage rating must match or exceed)
• Mounting Type: Through Hole (same installation method)
• Package / Case: TO-220-3 (identical physical form factor)

Performance Parameters:

• Current - Average Rectified (Io): Rated current capacity
• Voltage - Forward (Vf): Forward voltage drop characteristics
• Speed: Fast Recovery switching characteristics
• Current - Reverse Leakage: Leakage current at rated voltage

Compliance & Status:

• Product Status: Active (currently manufactured and supported)
• RoHS Status: ROHS3 Compliant (environmental compliance)

The STPS30L120CT from STMicroelectronics is identified as a substitute based on matching diode configuration, Schottky technology, 120 V voltage rating, TO-220-3 package, and through-hole mounting. Differences in current rating and forward voltage characteristics are noted in the parameter comparison table.

Parameter Comparison

Engineering Selection Recommendations

VT60M120CHM3/4W (Primary Part):

• Recommended for applications requiring 30 A continuous current capacity per diode
• Automotive-grade component with AEC-Q101 qualification
• Operating temperature range -40°C to 175°C supports extended thermal environments
• Forward voltage of 970 mV @ 30 A reflects performance at full rated current

STPS30L120CT (Substitute Part):

• Suitable for applications with maximum current requirements of 15 A per diode
• Active product status with ROHS3 compliance ensures ongoing availability and environmental compliance
• Lower reverse leakage current (200 µA vs. 500 µA) may provide advantages in low-leakage applications
• Maximum junction temperature of 150°C limits use in high-temperature environments above this threshold
• Lower forward voltage (880 mV @ 15 A) indicates reduced power dissipation at its rated current

Selection Basis: Both parts maintain identical voltage ratings (120 V), diode configuration (1 Pair Common Cathode), Schottky technology, TO-220-3 package, and through-hole mounting. Selection between these parts depends on circuit current requirements and thermal operating conditions. The VT60M120CHM3/4W supports higher current applications, while the STPS30L120CT is suitable for lower-current designs with reduced leakage requirements.

Frequently Asked Questions (FAQ)

Q: Can STPS30L120CT replace VT60M120CHM3/4W in all applications?

A: No. The STPS30L120CT is rated for 15 A average rectified current per diode, while the VT60M120CHM3/4W is rated for 30 A. Substitution is valid only in circuits where the maximum required current does not exceed 15 A per diode. Exceeding this rating will cause component failure.

Q: Are the packages physically identical?

A: Yes. Both parts use the TO-220-3 through-hole package. Physical mounting and PCB layout compatibility are equivalent.

Q: What is the significance of the 120 V voltage rating match?

A: The 120 V DC reverse voltage rating is a critical parameter. Both parts are rated identically at 120 V, meaning they can be used interchangeably in circuits designed for this voltage class. Neither part can be substituted into circuits requiring higher voltage ratings.

Q: How do forward voltage differences affect circuit performance?

A: The VT60M120CHM3/4W exhibits 970 mV forward voltage at 30 A, while the STPS30L120CT exhibits 880 mV at 15 A. Forward voltage varies with current. At equivalent current levels, the STPS30L120CT typically shows lower forward voltage, resulting in reduced power dissipation. However, direct comparison requires evaluation at the same operating current.

Q: Does the automotive qualification of VT60M120CHM3/4W matter for non-automotive applications?

A: Automotive qualification (AEC-Q101) indicates enhanced reliability testing and quality standards. For non-automotive applications, this qualification is not a requirement but may provide additional confidence in component reliability. The STPS30L120CT, while not explicitly listed with automotive qualification, is an active product with ROHS3 compliance suitable for general industrial applications.

Q: What is the impact of different reverse leakage currents?

A: The VT60M120CHM3/4W has 500 µA reverse leakage at 120 V, while the STPS30L120CT has 200 µA. Lower leakage current reduces standby power consumption and heat generation. In precision analog circuits or low-power applications, the STPS30L120CT may be preferable.

Q: Can these parts be used in parallel to increase current capacity?

A: Parallel operation of different diode types is not recommended without detailed thermal and current-sharing analysis. Differences in forward voltage characteristics and leakage currents can result in unequal current distribution and potential component damage.

Q: What is the maximum junction temperature difference between these parts?

A: The VT60M120CHM3/4W operates to 175°C maximum junction temperature, while the STPS30L120CT operates to 150°C. This 25°C difference is significant in high-temperature applications. The VT60M120CHM3/4W is required for circuits operating above 150°C.