KSC2233 Equivalent & Substitute Parts

Part Overview

The KSC2233 is an NPN bipolar junction transistor manufactured by onsemi, housed in a TO-220-3 through-hole package. This device is rated for 60 V collector-emitter breakdown voltage and 4 A maximum collector current, with a maximum power dissipation of 40 W. The KSC2233 is classified as obsolete, making identification of functionally compatible alternatives necessary for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Transistor Type	NPN
Voltage - Collector Emitter Breakdown (Max)	60 V
Current - Collector (Ic) (Max)	4 A
Power - Max	40 W
Vce Saturation (Max) @ Ib, Ic	1 V @ 400 mA, 4 A
DC Current Gain (hFE) (Min) @ Ic, Vce	30 @ 1 A, 5 V
Frequency - Transition	10 MHz
Package / Case	TO-220-3
Mounting Type	Through Hole
Operating Temperature (Max)	150°C (TJ)

Substitute Part Grouping Explanation

Substitution of the KSC2233 is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

Transistor polarity must be NPN
Collector-emitter breakdown voltage must be greater than or equal to 60 V
Maximum collector current must be greater than or equal to 4 A
Package type must be TO-220-3 through-hole configuration
Operating temperature range must support 150°C maximum junction temperature

Substitution Logic: The 2N6487G is identified as a substitute part because it maintains the same transistor polarity (NPN), meets or exceeds the voltage rating (60 V), provides higher current capability (15 A), and shares the same through-hole TO-220-3 package footprint. While the 2N6487G exhibits different saturation voltage characteristics and lower transition frequency, these differences do not preclude substitution in applications where the KSC2233 was originally specified, provided circuit design accommodates the parameter variations.

Parameter Comparison

Parameter	KSC2233	2N6487G
Transistor Type	NPN	NPN
Voltage - Collector Emitter Breakdown (Max)	60 V	60 V
Current - Collector (Ic) (Max)	4 A	15 A
Power - Max	40 W	1.8 W
Vce Saturation (Max) @ Ib, Ic	1 V @ 400 mA, 4 A	3.5 V @ 5 A, 15 A
DC Current Gain (hFE) (Min) @ Ic, Vce	30 @ 1 A, 5 V	20 @ 5 A, 4 V
Frequency - Transition	10 MHz	5 MHz
Package / Case	TO-220-3	TO-220-3
Mounting Type	Through Hole	Through Hole
Operating Temperature (Max)	150°C (TJ)	150°C (TJ)
Product Status	Obsolete	Active

Engineering Selection Recommendations

KSC2233 (Obsolete): The KSC2233 is classified as obsolete and carries REACH Unaffected status. While 1035 units remain in stock, this part number is no longer in active production. Selection of this part is limited to applications requiring existing inventory or legacy system maintenance.

2N6487G (Active Substitute): The 2N6487G is an active product manufactured by onsemi with 2412 units in stock. This device is RoHS3 compliant and carries REACH Unaffected status, meeting current regulatory requirements. The 2N6487G is suitable for new designs and production applications requiring NPN transistor functionality in the 60 V, 4 A operating envelope. The higher current rating (15 A) provides design margin for applications originally specified with the KSC2233.

Selection between these parts should be based on production timeline requirements and regulatory compliance mandates. The 2N6487G is the preferred choice for new production due to active status and regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can the 2N6487G directly replace the KSC2233 in existing circuit designs?

A: The 2N6487G shares the same TO-220-3 package footprint and NPN polarity as the KSC2233, enabling direct physical substitution. Both devices operate at 60 V collector-emitter breakdown voltage. However, circuit performance may differ due to variations in saturation voltage (3.5 V versus 1 V), transition frequency (5 MHz versus 10 MHz), and DC current gain characteristics. Circuit analysis is required to confirm functional equivalence in specific applications.

Q: What is the primary difference between the KSC2233 and 2N6487G?

A: The 2N6487G provides higher maximum collector current (15 A versus 4 A) but exhibits lower maximum power dissipation (1.8 W versus 40 W) and lower transition frequency (5 MHz versus 10 MHz). The KSC2233 is optimized for higher power applications, while the 2N6487G is rated for higher current handling at lower power levels.

Q: Why is the KSC2233 classified as obsolete?

A: The KSC2233 is no longer in active production by onsemi. Existing inventory remains available, but new production orders are not accepted. The 2N6487G represents the active alternative for ongoing supply.

Q: Are both parts RoHS compliant?

A: The KSC2233 carries no RoHS status designation in available documentation. The 2N6487G is RoHS3 compliant, meeting current environmental and regulatory standards for new product designs and manufacturing.

Q: What is the package compatibility between these parts?

A: Both the KSC2233 and 2N6487G are housed in TO-220-3 through-hole packages with identical pin configurations and mechanical footprints, enabling direct board-level substitution without layout modifications.

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