KSC1507R Equivalent & Substitute Parts

Part Overview

The KSC1507R is an NPN bipolar junction transistor manufactured by onsemi, housed in a TO-220-3 through-hole package. This device is rated for 300 V collector-emitter breakdown voltage with a maximum collector current of 200 µA and 15 W power dissipation. The KSC1507R is classified as obsolete, making identification of suitable substitute components necessary for ongoing design support and production continuity.

Substiute Parts

KSC1507R

onsemiIn Stock: 817KSC1507R Datasheet

Current PartRFQ

TIP48G

onsemiIn Stock: 1503TIP48G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the KSC1507R is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Transistor type must be NPN
• Voltage - Collector Emitter Breakdown rating must be equal to or greater than 300 V
• Package / Case must be TO-220-3 for mechanical and thermal compatibility
• Mounting type must be Through Hole

Functional Compatibility Considerations:

• Current - Collector (Ic) rating must support the application requirements
• Power dissipation capability must meet or exceed circuit demands
• Operating temperature range must encompass the intended application environment
• DC Current Gain (hFE) characteristics must be compatible with circuit biasing

The TIP48G meets the core electrical and mechanical substitution criteria, sharing identical voltage rating, package type, and mounting configuration. However, differences in current handling, power rating, and frequency response exist and must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The KSC1507R is classified as obsolete, while the TIP48G maintains active product status with onsemi. Active status ensures continued availability, manufacturing support, and compliance with current regulatory standards.

Compliance and Certification: Both devices carry REACH Unaffected status and EAR99 ECCN classification. The TIP48G additionally carries RoHS3 Compliance certification, meeting current environmental and hazardous substance restrictions applicable to electronic components.

Substitution Feasibility: The TIP48G is electrically and mechanically compatible with the KSC1507R for applications where the following conditions are satisfied:

• Circuit design operates within the TIP48G current rating of 1 A
• Power dissipation requirements do not exceed 2 W
• Frequency response requirements are compatible with 10 MHz transition frequency
• Biasing network accommodates the DC Current Gain characteristics at the specified operating point

Applications requiring the full 15 W power dissipation or 80 MHz frequency response of the KSC1507R cannot be directly substituted with the TIP48G without circuit redesign.

Frequently Asked Questions (FAQ)

Q: Can the TIP48G directly replace the KSC1507R in all applications?

A: No. While both devices share identical voltage rating and TO-220-3 package configuration, the TIP48G has reduced power dissipation (2 W versus 15 W) and lower transition frequency (10 MHz versus 80 MHz). Substitution is valid only when circuit requirements fall within the TIP48G specifications.

Q: What are the primary electrical differences between these devices?

A: The KSC1507R is optimized for low-current, high-frequency applications with 200 µA maximum collector current and 80 MHz transition frequency. The TIP48G is designed for higher current applications (1 A maximum) but operates at lower frequency (10 MHz). Power dissipation differs significantly: 15 W for the KSC1507R versus 2 W for the TIP48G.

Q: Are the packages physically identical?

A: Both devices use the TO-220-3 through-hole package, ensuring identical mechanical fit and thermal interface compatibility. Pin configuration and mounting requirements are equivalent.

Q: What compliance advantages does the TIP48G offer?

A: The TIP48G carries RoHS3 Compliance certification, meeting current environmental regulations. The KSC1507R, being obsolete, may not meet current compliance requirements for new designs or production environments with strict environmental standards.

Q: How do the DC Current Gain characteristics compare?

A: The KSC1507R specifies minimum hFE of 40 at 10 mA collector current and 10 V collector-emitter voltage. The TIP48G specifies minimum hFE of 30 at 300 mA collector current and 10 V collector-emitter voltage. Biasing calculations must account for these different gain characteristics and measurement conditions.

Q: Is the TIP48G suitable for high-frequency switching applications?

A: The TIP48G transition frequency of 10 MHz is significantly lower than the KSC1507R at 80 MHz. Applications requiring switching frequencies above 10 MHz require evaluation of alternative components or circuit redesign.