BUV20 Equivalent & Substitute Parts

Part Overview

The BUV20 is an NPN bipolar junction transistor manufactured by STMicroelectronics, designed for high-current applications requiring 50 A collector current capability at 125 V breakdown voltage. The device is housed in a TO-3 chassis mount package and rated for 250 W maximum power dissipation. The BUV20 is classified as obsolete, necessitating identification of equivalent substitute components for ongoing design requirements and system maintenance.

Substiute Parts

BUV20

STMicroelectronicsIn Stock: 1525BUV20 Datasheet

Current PartRFQ

2N6275

Microchip TechnologyIn Stock: 10012N6275 Datasheet

DirectRFQ

2N6276

Microchip TechnologyIn Stock: 10762N6276 Datasheet

DirectRFQ

2N6274

Microchip TechnologyIn Stock: 22822N6274 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BUV20 are classified into two categories based on electrical parameter alignment:

Direct Substitutes (2N6275, 2N6276): These parts maintain the core electrical specifications of the BUV20, including 50 A maximum collector current and 250 W power rating. Both are manufactured by Microchip Technology and carry active product status. These substitutes are electrically compatible for applications where the primary design constraints are collector current capacity and power dissipation.

Similar Substitute (2N6274): This part shares the 50 A collector current and 250 W power rating but operates at a reduced maximum breakdown voltage of 100 V compared to the BUV20's 125 V specification. The 2N6274 is suitable for applications where the circuit voltage does not exceed 100 V. This part is also manufactured by Microchip Technology with active product status.

Substitution eligibility is determined by the following parameters:

• Transistor type (NPN)
• Maximum collector current (50 A)
• Maximum power dissipation (250 W)
• Package compatibility (TO-3)
• Voltage rating (125 V for direct substitutes; 100 V minimum for similar substitute)

Parameter Comparison

Engineering Selection Recommendations

For applications requiring 125 V breakdown voltage: Select 2N6275 or 2N6276. Both parts are manufactured by Microchip Technology with active product status, ensuring long-term availability and supply chain continuity. These direct substitutes maintain the electrical specifications of the BUV20 across the critical parameters of collector current and power dissipation.

For applications operating at 100 V or below: The 2N6274 is a suitable alternative. This part is also manufactured by Microchip Technology with active product status. The reduced voltage rating does not impact performance in circuits designed for lower voltage operation.

Compliance considerations: The BUV20 is ROHS3 compliant, while all substitute parts (2N6275, 2N6276, 2N6274) are RoHS non-compliant. Design teams must evaluate compliance requirements for their specific applications. All parts carry REACH Unaffected status and EAR99 ECCN classification.

Packaging and mounting: The 2N6274 is specified as Through Hole mounting, whereas the BUV20 is Chassis Mount. Physical board layout and thermal management requirements must be evaluated during substitution planning.

Frequently Asked Questions (FAQ)

Q: Can the 2N6274 be used as a direct replacement for the BUV20 in all applications?

A: The 2N6274 is suitable only for applications where the circuit voltage does not exceed 100 V. The BUV20 is rated for 125 V breakdown voltage, while the 2N6274 is rated for 100 V. Applications operating above 100 V require 2N6275 or 2N6276.

Q: What is the difference between 2N6275 and 2N6276?

A: Both parts are manufactured by Microchip Technology and carry active product status. Detailed electrical parameter specifications beyond transistor type and general description are not provided in the available data. Microchip datasheets should be consulted for complete parameter comparison.

Q: Are there any compliance differences between the BUV20 and the substitute parts?

A: Yes. The BUV20 is ROHS3 compliant, while 2N6275, 2N6276, and 2N6274 are all RoHS non-compliant. All parts are REACH Unaffected and classified as EAR99 for export control purposes.

Q: Does the mounting type difference between BUV20 (Chassis Mount) and 2N6274 (Through Hole) affect substitution?

A: Mounting type differences require evaluation of board layout and thermal management design. The physical mounting configuration may necessitate PCB redesign or thermal interface modifications. The electrical performance of the transistor itself is not affected by mounting type differences.

Q: What inventory status should be considered when selecting a substitute?

A: All substitute parts carry active product status with available inventory. The BUV20 has 1502 units in stock (obsolete status), while 2N6275 has 919 units, 2N6276 has 1004 units, and 2N6274 has 2211 units available.