2SC2412-S-TP Equivalent & Substitute Parts

Part Overview

The 2SC2412-S-TP is an NPN bipolar junction transistor manufactured by Micro Commercial Co, designed for interface applications in surface mount configurations. This active product operates at collector currents up to 150 mA with a maximum collector-emitter breakdown voltage of 50 V and a transition frequency of 150 MHz. The device is packaged in SOT-23 (TO-236-3) surface mount format with a maximum power dissipation of 200 mW.

Substitute parts become necessary when the primary part experiences supply constraints, extended lead times, or when design requirements allow for alternative components with equivalent or superior electrical characteristics within the same package family.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Current - Collector (Ic) Max	150	mA
Voltage - Collector Emitter Breakdown (Max)	50	V
Vce Saturation (Max) @ Ib, Ic	400 mV @ 5 mA, 50 mA	—
Current - Collector Cutoff (Max)	100	nA
DC Current Gain (hFE) Min @ Ic, Vce	120 @ 1 mA, 6 V	—
Power - Max	200	mW
Frequency - Transition	150	MHz
Operating Temperature Range	-55 to 150	°C
Mounting Type	Surface Mount	—
Package / Case	TO-236-3, SC-59, SOT-23-3	—

Substitute Part Grouping Explanation

Substitution of the 2SC2412-S-TP is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Transistor Type: NPN (mandatory)
Voltage - Collector Emitter Breakdown (Max): 50 V or greater
Current - Collector (Ic) Max: 150 mA or greater
Mounting Type: Surface Mount (mandatory)
Package / Case: TO-236-3, SC-59, or SOT-23-3 (mandatory)

Secondary Compatibility Parameters:

Operating Temperature Range: Must encompass or exceed -55°C to 150°C
Vce Saturation characteristics at specified bias points
DC Current Gain (hFE) minimum specifications
Power dissipation capability

Parts are grouped into two categories:

Category A - Direct Equivalents: Parts meeting or exceeding all primary criteria with identical or superior electrical performance at the specified operating points.

Category B - Functional Alternatives: Parts with reduced maximum ratings (lower Ic, lower Vce breakdown, or lower power dissipation) that remain suitable for applications not requiring the full specification of the 2SC2412-S-TP.

Parameter Comparison

Part Number	Manufacturer	Ic Max (mA)	Vce Breakdown (V)	Power Max (mW)	fT (MHz)	hFE Min @ Ic, Vce	Package	Product Status
2SC2412-S-TP	Micro Commercial Co	150	50	200	150	120 @ 1 mA, 6 V	SOT-23	Active
2DC2412R-7	Diodes Incorporated	150	50	300	180	180 @ 1 mA, 6 V	SOT-23-3	Active
2SC2712-BL,LF	Toshiba Semiconductor and Storage	150	50	150	80	70 @ 2 mA, 6 V	S-Mini	Active
2SC2712-GR,LF	Toshiba Semiconductor and Storage	150	50	150	80	70 @ 2 mA, 6 V	S-Mini	Active
2SC2712-OTE85LF	Toshiba Semiconductor and Storage	150	50	150	80	70 @ 2 mA, 6 V	TO-236	Active
BC847A RFG	Taiwan Semiconductor Corporation	100	45	200	100	110 @ 2 mA, 5 V	SOT-23	Active
BC847B RFG	Taiwan Semiconductor Corporation	100	45	200	100	200 @ 2 mA, 5 V	SOT-23	Active
BC847C RFG	Taiwan Semiconductor Corporation	100	45	200	100	420 @ 2 mA, 5 V	SOT-23	Active
MMBT3904 RFG	Taiwan Semiconductor Corporation	200	40	300	250	100 @ 10 mA, 1 V	SOT-23	Active
MMBT3904L RFG	Taiwan Semiconductor Corporation	200	40	300	250	100 @ 10 mA, 1 V	SOT-23	Obsolete
MMBT6428LT1G	onsemi	200	50	225	700	250 @ 100 µA, 5 V	SOT-23-3	Active

Engineering Selection Recommendations

Category A - Recommended Direct Substitutes (Active Status):

2DC2412R-7 (Diodes Incorporated): This part meets all primary substitution criteria with superior electrical performance. It provides identical maximum collector current (150 mA) and collector-emitter breakdown voltage (50 V) as the 2SC2412-S-TP. The 2DC2412R-7 offers increased power dissipation (300 mW versus 200 mW) and higher transition frequency (180 MHz versus 150 MHz), with higher DC current gain (180 versus 120 at 1 mA, 6 V). The part is RoHS3 compliant with MSL 1 rating and REACH unaffected status. Packaging is SOT-23-3 in cut tape and digi-reel format.

MMBT6428LT1G (onsemi): This part exceeds the 2SC2412-S-TP specifications across multiple parameters. It maintains the 50 V collector-emitter breakdown voltage and supports 200 mA collector current. The MMBT6428LT1G provides significantly higher transition frequency (700 MHz versus 150 MHz) and higher DC current gain (250 at 100 µA, 5 V). Power dissipation is 225 mW. The part is RoHS3 compliant with MSL 1 rating and REACH unaffected status. Packaging is SOT-23-3 (TO-236).

Category B - Functional Alternatives (Active Status, Reduced Ratings):

2SC2712-BL,LF, 2SC2712-GR,LF, 2SC2712-OTE85LF (Toshiba Semiconductor and Storage): These parts maintain the 50 V collector-emitter breakdown voltage and 150 mA maximum collector current. However, they provide reduced power dissipation (150 mW versus 200 mW) and lower transition frequency (80 MHz versus 150 MHz). DC current gain is lower (70 at 2 mA, 6 V versus 120 at 1 mA, 6 V). These parts are suitable for applications where the full performance envelope of the 2SC2412-S-TP is not required. All three variants are RoHS3 compliant with MSL 1 rating and REACH unaffected status. Packaging variants include S-Mini and TO-236 formats.

BC847A RFG, BC847B RFG, BC847C RFG (Taiwan Semiconductor Corporation): These parts have reduced maximum ratings compared to the 2SC2412-S-TP. Maximum collector current is 100 mA (versus 150 mA), and collector-emitter breakdown voltage is 45 V (versus 50 V). Power dissipation is 200 mW. Transition frequency is 100 MHz. DC current gain varies by variant (110, 200, and 420 respectively at 2 mA, 5 V). These parts are suitable only for applications with lower current and voltage requirements. All variants are RoHS3 compliant with MSL 1 rating and REACH unaffected status.

Not Recommended:

MMBT3904 RFG: While this part offers superior transition frequency (250 MHz) and higher collector current (200 mA), the maximum collector-emitter breakdown voltage is only 40 V, which is below the 50 V specification of the 2SC2412-S-TP. This part is not suitable for applications requiring the full 50 V rating.

MMBT3904L RFG: This part has identical electrical characteristics to MMBT3904 RFG but carries an Obsolete product status. Use of obsolete components is not recommended for new designs or long-term production applications.

Frequently Asked Questions (FAQ)

Q: Can the 2DC2412R-7 be used as a direct replacement for the 2SC2412-S-TP?

A: Yes. The 2DC2412R-7 meets all primary substitution criteria with identical maximum collector current (150 mA) and collector-emitter breakdown voltage (50 V). It provides superior power dissipation capability (300 mW versus 200 mW) and higher transition frequency (180 MHz versus 150 MHz). Both parts use SOT-23 surface mount packaging. The 2DC2412R-7 is active and RoHS3 compliant.

Q: What is the key difference between the 2SC2712 variants (BL,LF / GR,LF / OTE85LF)?

A: The three 2SC2712 variants have identical electrical specifications but differ in packaging format and supply method. The 2SC2712-BL,LF uses S-Mini packaging in tape and reel format. The 2SC2712-GR,LF uses S-Mini packaging in cut tape and digi-reel format. The 2SC2712-OTE85LF uses TO-236 packaging in tape and reel format. All three maintain 50 V breakdown voltage and 150 mA maximum collector current but provide reduced power dissipation (150 mW) and lower transition frequency (80 MHz) compared to the 2SC2412-S-TP.

Q: Why is the MMBT3904 RFG not recommended as a substitute?

A: The MMBT3904 RFG has a maximum collector-emitter breakdown voltage of only 40 V, which is below the 50 V specification of the 2SC2412-S-TP. Applications requiring the full 50 V rating cannot use this part. Additionally, the MMBT3904L RFG variant carries an Obsolete product status.

Q: Are the BC847 variants suitable replacements for the 2SC2412-S-TP?

A: The BC847A RFG, BC847B RFG, and BC847C RFG are not direct replacements. These parts have reduced maximum ratings: maximum collector current is 100 mA (versus 150 mA), and collector-emitter breakdown voltage is 45 V (versus 50 V). These parts are suitable only for applications with lower current and voltage requirements than the 2SC2412-S-TP.

Q: What does the MMBT6428LT1G offer compared to the 2SC2412-S-TP?

A: The MMBT6428LT1G maintains the 50 V collector-emitter breakdown voltage and supports 200 mA collector current (exceeding the 150 mA of the 2SC2412-S-TP). It provides significantly higher transition frequency (700 MHz versus 150 MHz) and higher DC current gain (250 at 100 µA, 5 V). Power dissipation is 225 mW. This part is suitable for high-frequency applications requiring superior performance.

Q: Are all substitute parts RoHS3 compliant?

A: All recommended substitute parts (2DC2412R-7, 2SC2712 variants, BC847 variants, MMBT3904 variants, and MMBT6428LT1G) are RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level rating. The original 2SC2412-S-TP does not specify RoHS status but is REACH unaffected.

Q: Can I use the 2SC2712 parts in applications requiring 150 MHz or higher frequency operation?

A: No. The 2SC2712 variants have a transition frequency of only 80 MHz, which is significantly lower than the 2SC2412-S-TP (150 MHz). These parts are not suitable for applications requiring the full 150 MHz frequency specification.

Q: What is the difference between SOT-23 and SOT-23-3 packaging?

A: SOT-23 and SOT-23-3 are equivalent designations for the same three-lead surface mount package (also known as TO-236-3 or SC-59). Both refer to the same physical package format. The 2SC2412-S-TP uses SOT-23 packaging, and substitute parts using SOT-23-3 or TO-236 designations are mechanically compatible.

Q: Is the 2SC2412-S-TP still in active production?

A: Yes. The 2SC2412-S-TP is listed as an active product with 870 pieces in stock. However, substitute parts with higher inventory levels (such as the MMBT3904L RFG with 194,524 pieces or the 2SC2712-OTE85LF with 24,385 pieces) may offer better supply availability.

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