2N6517G Equivalent & Substitute Parts

Part Overview

The 2N6517G is an NPN bipolar junction transistor manufactured by onsemi, rated for 350V collector-emitter breakdown voltage and 500mA maximum collector current in a TO-92 through-hole package. This device is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design support and production requirements. Substitute parts are selected based on electrical performance parameters and mechanical compatibility within the TO-92 package family.

Substiute Parts

2N6517G

onsemiIn Stock: 12122N6517G Datasheet

Current PartRFQ

2N6517BU

onsemiIn Stock: 202202N6517BU Datasheet

DirectRFQ

KSP42TA

onsemiIn Stock: 55353KSP42TA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 2N6517G are identified based on the following electrical and mechanical criteria:

Primary Substitution Criteria:

• Transistor Type: NPN configuration
• Voltage Rating: Collector-emitter breakdown voltage equal to or greater than 350V
• Current Rating: Maximum collector current equal to or greater than 500mA
• Power Dissipation: Maximum power rating equal to or greater than 625mW
• Package Type: TO-92-3 through-hole configuration
• Mounting: Through-hole compatible with TO-226 footprint

Substitute Classification:

Direct Equivalent (2N6517BU): Identical electrical specifications to the main part with matching voltage, current, and power ratings. Differs in product status (Last Time Buy) and packaging format (Bulk vs. standard).

Similar Substitute (KSP42TA): Meets core electrical requirements with reduced voltage rating (300V vs. 350V) and lower transition frequency (50MHz vs. 200MHz). Suitable for applications not requiring the full 350V rating. Offers active product status and higher current gain characteristics.

Parameter Comparison

Engineering Selection Recommendations

2N6517BU Selection Criteria: The 2N6517BU provides direct electrical equivalence to the 2N6517G with identical voltage, current, and frequency specifications. This part is suitable for direct replacement in existing designs. However, the Last Time Buy status indicates limited future availability. The ROHS3 compliance and REACH Unaffected designation support regulatory requirements for new production. Bulk packaging format requires consideration for inventory management and component handling procedures.

KSP42TA Selection Criteria: The KSP42TA is appropriate for applications where the 350V voltage rating is not a functional requirement and the design can operate within a 300V maximum rating. The active product status ensures long-term availability and supply chain stability. ROHS3 compliance and REACH Unaffected status meet current regulatory standards. The higher DC current gain (40 vs. 20) and lower saturation voltage provide improved switching characteristics for certain circuit topologies. The reduced transition frequency (50MHz vs. 200MHz) limits applicability to lower-frequency switching applications.

Frequently Asked Questions (FAQ)

Q: Can the 2N6517BU be used as a direct replacement for the 2N6517G?

A: Yes. The 2N6517BU provides identical electrical specifications including 350V breakdown voltage, 500mA collector current, 625mW power rating, and 200MHz transition frequency. The primary difference is packaging format (Bulk) and product status (Last Time Buy). Mechanical compatibility with TO-92-3 footprints is maintained.

Q: What are the limitations of using KSP42TA as a substitute?

A: The KSP42TA operates at a maximum collector-emitter breakdown voltage of 300V, compared to 350V for the 2N6517G. Applications requiring the full 350V rating cannot use this substitute. The transition frequency is reduced to 50MHz, limiting use in high-frequency switching circuits. The KSP42TA is suitable only for designs that can accommodate these reduced specifications.

Q: Are all substitute parts compatible with the original TO-92-3 footprint?

A: Yes. Both 2N6517BU and KSP42TA are specified for TO-92-3 through-hole packages with TO-226 case designations. Physical pin configuration and lead spacing are compatible with existing PCB layouts designed for the 2N6517G.

Q: What is the significance of the Last Time Buy status for 2N6517BU?

A: Last Time Buy status indicates that onsemi has announced end-of-life for this component. Existing inventory is available, but no future production is planned. For long-term production requirements, the active-status KSP42TA should be evaluated if voltage and frequency specifications permit.

Q: How do the saturation voltage characteristics differ between these parts?

A: The 2N6517G and 2N6517BU specify 1V saturation voltage at 5mA base current and 50mA collector current. The KSP42TA specifies 500mV saturation voltage at 2mA base current and 20mA collector current. Lower saturation voltage in the KSP42TA reduces power dissipation in saturated switching applications but operates at different bias points.

Q: Are there compliance or regulatory differences between the substitute parts?

A: The 2N6517G does not specify RoHS status. Both 2N6517BU and KSP42TA are ROHS3 compliant. All three parts are REACH Unaffected and carry EAR99 ECCN classification. For designs requiring RoHS compliance, the 2N6517BU or KSP42TA must be selected.