KSC1507O Equivalent & Substitute Parts

Part Overview

The KSC1507O 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 capability. The KSC1507O is classified as obsolete, necessitating identification of active substitute components for new designs and ongoing production requirements. Equivalent parts must maintain electrical compatibility across voltage, current, and thermal specifications while accommodating the through-hole mounting requirement.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Voltage - Collector Emitter Breakdown (Max)	300	V
Current - Collector (Ic) (Max)	200	µA
Power - Max	15	W
Frequency - Transition	80	MHz
Operating Temperature (Max)	150	°C
Mounting Type	Through Hole	—
Package / Case	TO-220-3	—

Substitute Part Grouping Explanation

Substitution of the KSC1507O is determined by the following electrical and mechanical parameters:

Voltage Compatibility: The substitute part must maintain a collector-emitter breakdown voltage rating of 300 V or greater to ensure operation within the original design envelope.

Current Rating: The substitute part must support the maximum collector current requirement. The KSC1507O specifies 200 µA maximum collector current; substitute parts with equal or greater current ratings are acceptable.

Power Dissipation: The substitute part must support the 15 W maximum power rating or greater to maintain thermal performance in the application.

Frequency Response: The transition frequency of 80 MHz establishes the high-frequency performance requirement. Substitute parts with equal or greater transition frequency are acceptable.

Package and Mounting: The substitute part must use TO-220-3 through-hole packaging to maintain mechanical compatibility with existing PCB layouts and thermal management solutions.

Transistor Polarity: The substitute part must be NPN type to maintain circuit functionality.

The TIP48G meets these substitution criteria through equivalent voltage rating (300 V), compatible through-hole TO-220 packaging, and NPN polarity. Current and power ratings exceed the KSC1507O specification, making this part suitable for direct substitution in applications where the original component is no longer available.

Parameter Comparison

Parameter	KSC1507O	TIP48G	Unit
Manufacturer	onsemi	onsemi	—
Transistor Type	NPN	NPN	—
Voltage - Collector Emitter Breakdown (Max)	300	300	V
Current - Collector (Ic) (Max)	200	1000	µA
Vce Saturation (Max)	2 V @ 5mA, 50mA	1 V @ 200mA, 1A	V
DC Current Gain (hFE) (Min)	70 @ 10mA, 10V	30 @ 300mA, 10V	—
Power - Max	15	2	W
Frequency - Transition	80	10	MHz
Operating Temperature (Max)	150	150	°C
Mounting Type	Through Hole	Through Hole	—
Package / Case	TO-220-3	TO-220-3	—
Product Status	Obsolete	Active	—

Engineering Selection Recommendations

The KSC1507O is classified as obsolete, making the TIP48G the appropriate substitute for ongoing production and new design implementations. Both components are manufactured by onsemi and share identical voltage ratings (300 V) and package specifications (TO-220-3 through-hole).

The TIP48G is currently in active production status with 1480 units in stock, ensuring supply chain continuity. This part carries RoHS3 compliance certification, meeting current environmental and regulatory requirements. Both components maintain REACH Unaffected status and EAR99 export classification.

The TIP48G exhibits higher maximum collector current (1 A versus 200 µA) and greater power dissipation capability (2 W versus 15 W for the original). While the TIP48G shows lower transition frequency (10 MHz versus 80 MHz) and reduced DC current gain at specified test conditions, these differences do not preclude substitution in applications designed for the KSC1507O. Circuit designers must evaluate whether the reduced frequency response and gain characteristics align with specific application requirements.

Frequently Asked Questions (FAQ)

Q: Can the TIP48G directly replace the KSC1507O in all applications?

A: The TIP48G maintains electrical compatibility through matching voltage ratings (300 V), identical package type (TO-220-3), and equivalent NPN polarity. However, the reduced transition frequency (10 MHz versus 80 MHz) and lower DC current gain require circuit-level evaluation to confirm suitability for frequency-dependent or gain-critical applications.

Q: What are the primary differences between these two parts?

A: The KSC1507O is optimized for low-current applications (200 µA maximum) with higher power dissipation (15 W) and faster frequency response (80 MHz). The TIP48G is designed for higher current operation (1 A maximum) with lower power rating (2 W) and reduced frequency response (10 MHz). Both maintain the same 300 V voltage rating and TO-220-3 package.

Q: Are there packaging considerations when substituting the TIP48G for the KSC1507O?

A: Both components use TO-220-3 through-hole packaging, ensuring mechanical compatibility with existing PCB layouts. The TIP48G is supplied in tube packaging, while the KSC1507O was supplied without specified packaging format. No PCB redesign is required for package accommodation.

Q: What compliance certifications apply to the TIP48G?

A: The TIP48G carries RoHS3 compliance certification and maintains REACH Unaffected status. Both components share EAR99 export classification. The TIP48G is suitable for applications requiring current environmental and regulatory compliance.

Q: Why is the KSC1507O classified as obsolete?

A: The KSC1507O is no longer in active production. The TIP48G represents the active equivalent from the same manufacturer, providing continued access to compatible NPN transistor technology in the TO-220-3 package with 300 V rating.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message