2SC3225,T6ALPSF(M Equivalent & Substitute Parts

Part Overview

The 2SC3225,T6ALPSF(M is an NPN bipolar junction transistor manufactured by Toshiba Semiconductor and Storage, designed for general-purpose switching and amplification applications. This component operates at a maximum collector current of 2 A with a collector-emitter breakdown voltage of 40 V and a maximum power dissipation of 900 mW. The device is housed in a TO-92MOD through-hole package.

The 2SC3225,T6ALPSF(M is classified as obsolete. Identification of equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for legacy systems and applications.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Current - Collector (Ic) (Max)	2	A
Voltage - Collector Emitter Breakdown (Max)	40	V
Power - Max	900	mW
Frequency - Transition	220	MHz
Operating Temperature (TJ)	150	°C
Mounting Type	Through Hole	—
Package / Case	TO-226-3, TO-92-3 Long Body	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the 2SC3225,T6ALPSF(M is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

Transistor type must be NPN
Maximum collector current (Ic) must be equal to or greater than 2 A
Maximum collector-emitter breakdown voltage (VCEO) must be equal to or greater than 40 V
Maximum power dissipation must be equal to or greater than 900 mW
Operating temperature range must support 150°C (TJ)

Mechanical Compatibility Criteria:

Mounting type must be through-hole
Package must be compatible with TO-92-3 Long Body footprint

The KSC2328AYBU meets the transistor type (NPN) and collector current (2 A) requirements. However, this substitute exhibits a maximum collector-emitter breakdown voltage of 30 V, which is below the 40 V specification of the main part. Additionally, the maximum power dissipation is 1 W, which exceeds the 900 mW requirement. The transition frequency of 120 MHz is lower than the 220 MHz of the main part. The KSC2328AYBU is classified as active product status and is available in volume.

Parameter Comparison

Parameter	2SC3225,T6ALPSF(M	KSC2328AYBU	Unit
Transistor Type	NPN	NPN	—
Current - Collector (Ic) (Max)	2	2	A
Voltage - Collector Emitter Breakdown (Max)	40	30	V
Vce Saturation (Max)	500mV @ 1mA, 300mA	2V @ 30mA, 1.5A	V
Current - Collector Cutoff (Max)	10µA (ICBO)	100nA (ICBO)	—
DC Current Gain (hFE) (Min)	500 @ 400mA, 1V	160 @ 500mA, 2V	—
Power - Max	900	1	mW
Frequency - Transition	220	120	MHz
Operating Temperature (TJ)	150	150	°C
Mounting Type	Through Hole	Through Hole	—
Package / Case	TO-226-3, TO-92-3 Long Body	TO-226-3, TO-92-3 Long Body	—
Product Status	Obsolete	Active	—

Engineering Selection Recommendations

The 2SC3225,T6ALPSF(M is an obsolete component. The KSC2328AYBU is an active product manufactured by Fairchild Semiconductor with confirmed inventory availability of 6224 units.

From a compliance perspective, both components carry the same ECCN classification (EAR99), indicating equivalent export control status.

The KSC2328AYBU shares the same transistor type (NPN), maximum collector current (2 A), operating temperature range (150°C TJ), and through-hole mounting configuration with the 2SC3225,T6ALPSF(M. Both components are housed in compatible TO-92-3 Long Body packages.

The KSC2328AYBU exhibits a lower maximum collector-emitter breakdown voltage (30 V versus 40 V) and lower transition frequency (120 MHz versus 220 MHz). Circuit designs operating at voltages below 30 V and frequencies below 120 MHz are compatible with the KSC2328AYBU. Applications requiring the full 40 V breakdown voltage or 220 MHz transition frequency performance of the original part require alternative sourcing or design modification.

Frequently Asked Questions (FAQ)

Q: Can the KSC2328AYBU directly replace the 2SC3225,T6ALPSF(M in all applications?

A: The KSC2328AYBU is compatible with applications where the circuit operates at collector-emitter voltages not exceeding 30 V and transition frequencies not exceeding 120 MHz. Applications requiring the full 40 V breakdown voltage or 220 MHz transition frequency capability of the original part require evaluation of alternative components or circuit redesign.

Q: Are the packages physically compatible?

A: Both the 2SC3225,T6ALPSF(M and KSC2328AYBU are housed in TO-92-3 Long Body packages with compatible through-hole mounting configurations. Physical board-level substitution is feasible from a package perspective.

Q: What is the difference in DC current gain between these parts?

A: The 2SC3225,T6ALPSF(M specifies a minimum DC current gain (hFE) of 500 at 400 mA and 1 V. The KSC2328AYBU specifies a minimum DC current gain of 160 at 500 mA and 2 V. Circuits designed around the higher gain characteristics of the original part require bias network evaluation when substituting the KSC2328AYBU.

Q: What is the saturation voltage difference?

A: The 2SC3225,T6ALPSF(M exhibits a maximum saturation voltage of 500 mV at 1 mA and 300 mA. The KSC2328AYBU exhibits a maximum saturation voltage of 2 V at 30 mA and 1.5 A. Applications sensitive to saturation voltage performance require circuit analysis to confirm compatibility.

Q: Is the KSC2328AYBU available in production quantities?

A: The KSC2328AYBU is classified as an active product with confirmed inventory of 6224 units in stock. The 2SC3225,T6ALPSF(M is obsolete with 912 units available as remaining stock.

Q: Are there export control differences between these parts?

A: Both components carry the same ECCN classification (EAR99), indicating equivalent export control treatment.

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