2SC57250SL Equivalent & Substitute Parts

Part Overview

The 2SC57250SL is an NPN bipolar junction transistor manufactured by Panasonic Electronic Components, designed for general-purpose switching and amplification applications. This device features a maximum collector current of 2 A, collector-emitter breakdown voltage of 15 V, and maximum power dissipation of 600 mW in a surface mount Mini3-G1 package (TO-236-3/SOT-23-3).

The 2SC57250SL is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure component availability, and support ongoing production requirements for applications utilizing this transistor.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Current - Collector (Ic) (Max)	2	A
Voltage - Collector Emitter Breakdown (Max)	15	V
Power - Max	600	mW
Frequency - Transition	280	MHz
DC Current Gain (hFE) (Min)	200	@ 100mA, 2V
Operating Temperature (Max)	150	°C
Package / Case	TO-236-3, SC-59, SOT-23-3	—
Mounting Type	Surface Mount	—

Substitute Part Grouping Explanation

Substitution of the 2SC57250SL is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

Transistor type must be NPN
Collector-emitter breakdown voltage (VCEO) must be ≥ 15 V
Maximum collector current (Ic) must be ≥ 2 A
Maximum power dissipation must be ≥ 600 mW
DC current gain (hFE) minimum must be ≥ 200
Operating temperature range must support 150°C maximum junction temperature

Mechanical Compatibility Criteria:

Package must be TO-236-3, SC-59, or SOT-23-3
Mounting type must be surface mount

Four substitute parts meet these criteria with varying performance characteristics:

FMMT617TA (Diodes Incorporated) — Exceeds current and power ratings; active product status
2STR1215 (STMicroelectronics) — Meets current and power requirements; active product status
2SD1048-6-TB-E (onsemi) — Reduced current rating; active product status
PMBT2369,215 (Nexperia USA Inc.) — Reduced current rating; active product status with automotive qualification

Parameter Comparison

Parameter	2SC57250SL	FMMT617TA	2STR1215	2SD1048-6-TB-E	PMBT2369,215
Manufacturer	Panasonic	Diodes Inc.	STMicroelectronics	onsemi	Nexperia USA Inc.
Transistor Type	NPN	NPN	NPN	NPN	NPN
Ic (Max)	2 A	3 A	1.5 A	700 mA	200 mA
VCEO (Max)	15 V	15 V	15 V	15 V	15 V
Power - Max	600 mW	625 mW	500 mW	200 mW	250 mW
Frequency - Transition	280 MHz	120 MHz	—	250 MHz	500 MHz
hFE (Min)	200 @ 100mA, 2V	300 @ 200mA, 2V	200 @ 500mA, 2V	200 @ 50mA, 2V	40 @ 10mA, 1V
Operating Temperature (Max)	150°C	150°C	150°C	125°C	150°C
Package / Case	TO-236-3, SOT-23-3	TO-236-3, SOT-23-3	TO-236-3, SOT-23-3	TO-236-3, SOT-23-3	TO-236-3, SOT-23-3
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitute: FMMT617TA

The FMMT617TA from Diodes Incorporated is the optimal substitute for the 2SC57250SL. This part exceeds the original specifications with a maximum collector current of 3 A and power dissipation of 625 mW, providing design margin for the 2 A requirement. The device maintains the 15 V collector-emitter breakdown voltage and achieves a higher DC current gain (hFE minimum of 300). FMMT617TA is active in production, ROHS3 compliant, and available in high inventory (146,300 units). The TO-236-3/SOT-23-3 package is mechanically identical to the original.

Secondary Substitute: 2STR1215

The 2STR1215 from STMicroelectronics provides a direct current rating match at 1.5 A maximum collector current, with 500 mW power dissipation. This part is active in production, ROHS3 compliant, and available in substantial inventory (21,200 units). The operating temperature range extends to −65°C, providing broader thermal coverage than the original. The 2STR1215 is suitable for applications where the 2 A current requirement can be met with 1.5 A maximum rating.

Tertiary Substitutes: 2SD1048-6-TB-E and PMBT2369,215

The 2SD1048-6-TB-E and PMBT2369,215 are suitable only for applications where collector current requirements do not exceed 700 mA and 200 mA respectively. Both parts are active in production and ROHS3 compliant. The PMBT2369,215 carries automotive qualification (AEC-Q101) and is suitable for automotive applications. These parts should be selected only when circuit design permits reduced current ratings.

Frequently Asked Questions (FAQ)

Q: Can the FMMT617TA directly replace the 2SC57250SL in all applications?

A: The FMMT617TA is electrically and mechanically compatible with the 2SC57250SL. Both devices share identical package specifications (TO-236-3/SOT-23-3), collector-emitter breakdown voltage (15 V), and DC current gain characteristics. The FMMT617TA exceeds the original specifications in collector current (3 A vs. 2 A) and power dissipation (625 mW vs. 600 mW), making it suitable for direct substitution without circuit modification.

Q: What is the difference between the 2STR1215 and FMMT617TA substitutes?

A: The primary difference is maximum collector current: FMMT617TA supports 3 A while 2STR1215 supports 1.5 A. Both maintain the 15 V collector-emitter breakdown voltage and are ROHS3 compliant. The 2STR1215 offers a wider operating temperature range (−65°C to 150°C). Selection depends on circuit current requirements; FMMT617TA provides greater design margin for higher current applications.

Q: Are all substitute parts available in the same package as the original 2SC57250SL?

A: Yes. All four substitute parts (FMMT617TA, 2STR1215, 2SD1048-6-TB-E, and PMBT2369,215) are available in the TO-236-3/SOT-23-3 surface mount package, ensuring mechanical compatibility with existing PCB layouts and assembly processes.

Q: Why is the 2SD1048-6-TB-E listed as a substitute if it has only 700 mA maximum current?

A: The 2SD1048-6-TB-E meets the electrical compatibility criteria for NPN transistor type, 15 V collector-emitter breakdown voltage, and DC current gain (hFE minimum of 200). It is suitable for applications where circuit design permits operation at reduced collector current levels below 700 mA. This part is active in production with high inventory availability (12,300 units).

Q: What does RoHS3 compliance mean for component selection?

A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting the use of specific hazardous materials in electrical and electronic equipment. All active substitute parts listed are ROHS3 compliant, while the original 2SC57250SL is non-compliant. Selection of ROHS3 compliant substitutes ensures regulatory compliance for new designs and production.

Q: Can the PMBT2369,215 be used in automotive applications?

A: Yes. The PMBT2369,215 carries automotive qualification (AEC-Q101) and is suitable for automotive applications. However, its maximum collector current of 200 mA limits its use to low-current circuit designs. This part is active in production and ROHS3 compliant.

Q: What is the significance of the transition frequency (fT) parameter in substitute selection?

A: Transition frequency indicates the frequency at which the transistor's current gain drops to unity. The original 2SC57250SL operates at 280 MHz. Substitute parts vary: FMMT617TA (120 MHz), 2SD1048-6-TB-E (250 MHz), and PMBT2369,215 (500 MHz). For switching applications at low frequencies, transition frequency differences are not critical. For high-frequency amplification circuits, the PMBT2369,215 (500 MHz) or 2SD1048-6-TB-E (250 MHz) may provide superior performance.

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