2SC2412-Q-TP Equivalent & Substitute Parts

Part Overview

The 2SC2412-Q-TP is an NPN bipolar junction transistor manufactured by Micro Commercial Co, designed for general-purpose switching and amplification applications. This device features a 50 V collector-emitter breakdown voltage, 150 mA maximum collector current, and 200 mW power dissipation in a surface mount SOT-23 package. The part is classified as obsolete, necessitating identification of active equivalent and substitute components for new designs and ongoing production requirements. Substitute parts must maintain electrical compatibility within the specified parameter ranges while offering active product status and improved availability.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Voltage - Collector Emitter Breakdown (Max)	50	V
Current - Collector (Ic) (Max)	150	mA
Power - Max	200	mW
Frequency - Transition	150	MHz
Operating Temperature Range	-55 to 150	°C
Package / Case	TO-236-3, SC-59, SOT-23-3	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the 2SC2412-Q-TP are categorized based on electrical parameter compatibility and product status. The primary substitution criteria are:

Critical Parameters for Substitution:

Transistor Type: NPN
Voltage - Collector Emitter Breakdown (Max): ≥ 50 V
Current - Collector (Ic) (Max): ≥ 150 mA
Power - Max: ≥ 200 mW
Package / Case: TO-236-3, SC-59, SOT-23-3 (surface mount compatibility)
Product Status: Active (preferred for new designs)
RoHS Compliance: ROHS3 Compliant

Direct Equivalents maintain identical electrical specifications and base product numbers, offering pin-for-pin compatibility with the original part.

Similar Substitutes meet or exceed the critical electrical parameters but may feature enhanced performance characteristics (higher frequency response, improved current gain, or increased power dissipation) or different package variants within the same physical form factor.

Parameter Comparison

Part Number	Manufacturer	Product Status	Ic (Max) mA	Vce Breakdown (Max) V	Power (Max) mW	Frequency (Transition) MHz	Package	Operating Temp °C
2SC2412-Q-TP	Micro Commercial Co	Obsolete	150	50	200	150	SOT-23	-55 to 150
2SC2412KT146Q	Rohm Semiconductor	Active	150	50	200	180	SMT3	-55 to 150
2SC2412KT146S	Rohm Semiconductor	Active	150	50	200	180	SMT3	-55 to 150
2PD601BRL,215	Nexperia USA Inc.	Active	200	50	250	250	TO-236AB	-55 to 150
2SC2712-BL,LF	Toshiba Semiconductor and Storage	Active	150	50	150	S-Mini	-55 to 125
2SC2712-GR,LF	Toshiba Semiconductor and Storage	Active	150	50	150	S-Mini	-55 to 125
2SC2712-OTE85LF	Toshiba Semiconductor and Storage	Active	150	50	150	TO-236	-55 to 125
2SC2712-Y,LF	Toshiba Semiconductor and Storage	Active	150	50	150	S-Mini	-55 to 125
CMPT6428 TR PBFREE	Central Semiconductor Corp	Active	200	50	350	700	SOT-23	-65 to 150
MMBT6428LT1G	onsemi	Active	200	50	225	700	SOT-23-3	-55 to 150
NSVMMBT6429LT1G	onsemi	Active	200	45	300	700	SOT-23-3	-55 to 150

Engineering Selection Recommendations

Direct Equivalents (Preferred for Replacement):

The 2SC2412KT146Q and 2SC2412KT146S, both manufactured by Rohm Semiconductor, are direct equivalents sharing the same base product number (2SC2412) and maintaining identical electrical specifications. Both parts are active products with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). These components provide the most straightforward replacement path for the obsolete 2SC2412-Q-TP, with enhanced transition frequency (180 MHz versus 150 MHz) offering improved performance margin. The 2SC2412KT146Q and 2SC2412KT146S differ only in DC current gain specifications (120 versus 270 @ 1mA, 6V), allowing selection based on specific circuit requirements.

Higher Current Capability Substitutes:

The 2PD601BRL,215 (Nexperia USA Inc.) and MMBT6428LT1G (onsemi) exceed the original specifications with 200 mA maximum collector current and enhanced power dissipation (250 mW and 225 mW respectively). The 2PD601BRL,215 carries AEC-Q101 automotive qualification and is suitable for applications requiring higher current handling. The MMBT6428LT1G provides significantly higher transition frequency (700 MHz) and is available in high volume. Both maintain 50 V breakdown voltage and SOT-23 package compatibility.

Lower Power Alternatives:

The Toshiba 2SC2712 series (2SC2712-BL,LF, 2SC2712-GR,LF, 2SC2712-OTE85LF, 2SC2712-Y,LF) offers active product status with 150 mA collector current and 50 V breakdown voltage. These parts feature reduced power dissipation (150 mW) and lower transition frequency (80 MHz), suitable for applications with relaxed frequency requirements and lower power budgets. Operating temperature maximum is 125°C, which may limit use in high-temperature environments compared to the original 150°C specification.

High-Performance Substitute:

The CMPT6428 TR PBFREE (Central Semiconductor Corp) and NSVMMBT6429LT1G (onsemi) represent high-performance alternatives with 700 MHz transition frequency and 200 mA collector current. The CMPT6428 provides 350 mW power dissipation and extended temperature range (-65°C to 150°C). The NSVMMBT6429LT1G features 45 V breakdown voltage (5 V lower than specified) and should be evaluated for margin in applications approaching the 50 V limit.

All recommended substitutes maintain ROHS3 compliance and surface mount packaging compatibility with the original part.

Frequently Asked Questions (FAQ)

Q: Can the 2SC2412KT146Q directly replace the 2SC2412-Q-TP without circuit modification?

A: Yes. The 2SC2412KT146Q is a direct equivalent with identical electrical specifications (50 V breakdown, 150 mA collector current, 200 mW power dissipation) and the same base product number. Both use TO-236-3/SOT-23-3 surface mount packaging. The enhanced transition frequency (180 MHz versus 150 MHz) provides additional performance margin without requiring circuit changes.

Q: What is the difference between 2SC2412KT146Q and 2SC2412KT146S?

A: Both parts are manufactured by Rohm Semiconductor and share identical electrical specifications except for DC current gain. The 2SC2412KT146Q specifies 120 minimum hFE @ 1mA, 6V, while the 2SC2412KT146S specifies 270 minimum hFE @ 1mA, 6V. Selection depends on circuit bias requirements and desired gain characteristics. Both are active products with equivalent availability and compliance status.

Q: Can I use MMBT6428LT1G as a substitute in all applications?

A: The MMBT6428LT1G meets or exceeds all critical electrical parameters (200 mA collector current, 50 V breakdown, 225 mW power dissipation) and uses compatible SOT-23-3 packaging. However, the significantly higher transition frequency (700 MHz versus 150 MHz) may introduce different high-frequency behavior. Evaluate circuit stability and frequency response characteristics before substitution in sensitive applications. The part is suitable for general-purpose switching and amplification where the enhanced frequency response is beneficial or neutral.

Q: Why do some substitutes have lower power ratings than the original part?

A: The Toshiba 2SC2712 series offers 150 mW power dissipation compared to the original 200 mW specification. These parts are suitable for applications with lower power requirements and reduced thermal dissipation needs. If your circuit requires the full 200 mW capability, select alternatives with equal or higher power ratings such as 2SC2412KT146Q (200 mW), 2PD601BRL,215 (250 mW), or MMBT6428LT1G (225 mW).

Q: Are all substitute parts RoHS compliant?

A: Yes. All recommended substitute parts carry ROHS3 compliance certification, meeting environmental and hazardous substance restrictions equivalent to the original 2SC2412-Q-TP.

Q: What is the significance of the operating temperature range difference?

A: The original 2SC2412-Q-TP and most substitutes support -55°C to 150°C operating range. The Toshiba 2SC2712 series limits maximum temperature to 125°C. If your application requires operation at temperatures between 125°C and 150°C, select alternatives maintaining the full -55°C to 150°C range such as 2SC2412KT146Q, 2PD601BRL,215, MMBT6428LT1G, or CMPT6428 TR PBFREE.

Q: Can I use NSVMMBT6429LT1G as a substitute despite the 45 V breakdown voltage specification?

A: The NSVMMBT6429LT1G specifies 45 V collector-emitter breakdown voltage compared to the original 50 V specification. This 5 V reduction may be acceptable in applications with adequate design margin below 45 V. However, if your circuit operates near or above 45 V, this part does not meet the specified electrical requirements and should not be used. Verify circuit maximum voltage stress before substitution.

Q: What packaging variants are available among the substitutes?

A: All substitutes use compatible surface mount packages within the TO-236-3/SOT-23-3 family: SOT-23, SMT3, S-Mini, and TO-236AB. These packages are physically and electrically interchangeable for PCB assembly purposes. Verify your assembly equipment and PCB footprint compatibility with the specific package variant selected.

Q: Which substitute offers the best availability?

A: The MMBT6428LT1G (onsemi) offers the highest inventory level at 23,300 pieces, followed by 2SC2712-OTE85LF (Toshiba) at 24,385 pieces and 2SC2412KT146Q (Rohm) at 1,000,300 pieces. For volume production, the 2SC2412KT146Q provides exceptional availability as a direct equivalent.

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