BC857CLT1G Equivalent & Substitute Parts

Part Overview

The BC857CLT1G is an active PNP bipolar junction transistor manufactured by onsemi, supplied in Cut Tape (CT) & Digi-Reel® packaging. This surface mount device operates at 45 V collector-emitter breakdown voltage with a maximum collector current of 100 mA and 300 mW power dissipation. The part is specified for general-purpose switching and amplification applications in the -55°C to 150°C operating temperature range. Equivalent and substitute parts are identified to support design flexibility, inventory management, and supply chain continuity while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP	—
Collector Current (Max)	100	mA
Collector-Emitter Breakdown Voltage (Max)	45	V
Vce Saturation (Max) @ Ib, Ic	650 mV @ 5 mA, 100 mA	—
Collector Cutoff Current (Max)	15	nA
DC Current Gain (hFE Min) @ Ic, Vce	420 @ 2 mA, 5 V	—
Power Dissipation (Max)	300	mW
Transition Frequency	100	MHz
Operating Temperature Range	-55 to 150	°C
Package Type	SOT-23-3 (TO-236)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the BC857CLT1G are classified into two categories based on electrical and mechanical compatibility:

Parametric Equivalents maintain identical electrical specifications across all critical parameters: collector current (100 mA), collector-emitter breakdown voltage (45 V), saturation voltage (650 mV @ 5 mA, 100 mA), DC current gain (420 @ 2 mA, 5 V), power dissipation (300 mW), transition frequency (100 MHz), and operating temperature range (-55°C to 150°C). These parts differ only in packaging format (Tape & Reel versus Cut Tape) or manufacturer designation. Parametric equivalents include BC857CLT3G and SBC857CLT1G.

Direct Substitutes maintain the same electrical specifications but may include automotive-grade qualification (AEC-Q101), alternative packaging designations (TO-236AB), or enhanced transition frequency (200 MHz). These parts are functionally interchangeable in applications where the main part specifications are met. Direct substitutes include BC857C,215, BC857C,235, BC857C-7-F, BC857C-TP, BC860C,215, and BC860C,235.

Similar Parts share the same package type and voltage rating but differ in collector current capacity (500 mA versus 100 mA) and associated DC current gain specifications. These parts are suitable only for applications requiring higher current handling. Similar parts include BC807-16-7-F and BC807-25-7-F.

The key parameters determining substitution eligibility are: transistor type (PNP), collector current rating, collector-emitter breakdown voltage, saturation voltage, DC current gain, power dissipation, and package type (SOT-23-3).

Parameter Comparison

Part Number	Manufacturer	Ic (Max) mA	Vce(br) V	Vce Sat mV	hFE (Min)	P (Max) mW	fT MHz	Temp Range °C	Package	Packaging Format
BC857CLT1G	onsemi	100	45	650	420	300	100	-55 to 150	SOT-23-3	Cut Tape
BC857CLT3G	onsemi	100	45	650	420	300	100	-55 to 150	SOT-23-3	Tape & Reel
SBC857CLT1G	onsemi	100	45	650	420	300	100	-55 to 150	SOT-23-3	Tape & Reel
BC857C,215	Nexperia USA Inc.	100	45	650	420	250	100	-40 to 150	TO-236AB	Cut Tape
BC857C,235	Nexperia USA Inc.	100	45	650	420	250	100	-40 to 150	TO-236AB	Cut Tape
BC857C-7-F	Diodes Incorporated	100	45	650	420	300	200	-65 to 150	SOT-23-3	Tape & Reel
BC857C-TP	Micro Commercial Co	100	45	650	420	310	200	-55 to 150	SOT-23-3	Tape & Reel
BC860C,215	Nexperia USA Inc.	100	45	650	420	250	100	-40 to 150	TO-236AB	Cut Tape
BC860C,235	Nexperia USA Inc.	100	45	650	420	250	100	-40 to 150	TO-236AB	Tape & Reel
BC807-16-7-F	Diodes Incorporated	500	45	700	100	310	100	-55 to 150	SOT-23-3	Tape & Reel
BC807-25-7-F	Diodes Incorporated	500	45	700	160	310	100	-55 to 150	SOT-23-3	Cut Tape

Engineering Selection Recommendations

Parametric Equivalents (BC857CLT3G, SBC857CLT1G): These parts are direct electrical equivalents of the BC857CLT1G with identical specifications. Selection between these parts depends on packaging format requirements. BC857CLT3G is supplied in Tape & Reel format, suitable for high-volume automated assembly. SBC857CLT1G carries automotive-grade qualification (AEC-Q101) and is appropriate for automotive applications requiring enhanced reliability screening.

Direct Substitutes (BC857C,215, BC857C,235, BC857C-7-F, BC857C-TP, BC860C,215, BC860C,235): These parts maintain the core electrical specifications (100 mA collector current, 45 V breakdown voltage, 650 mV saturation voltage, 420 hFE minimum) and are functionally interchangeable. BC857C variants from Nexperia and Diodes Incorporated differ in power dissipation rating (250 mW or 300 mW) and transition frequency (100 MHz or 200 MHz). BC857C-7-F and BC857C-TP offer enhanced transition frequency (200 MHz) compared to the main part (100 MHz), providing improved high-frequency performance. BC860C variants are electrically equivalent but carry automotive-grade qualification (AEC-Q101). Selection among direct substitutes is based on packaging format preference, manufacturer availability, and application temperature requirements.

Similar Parts (BC807-16-7-F, BC807-25-7-F): These parts are suitable only for applications requiring higher collector current capacity (500 mA versus 100 mA). The BC807 series maintains the same 45 V breakdown voltage and SOT-23-3 package but exhibits different saturation voltage (700 mV) and DC current gain characteristics. These parts are not interchangeable with the BC857CLT1G in current-limited applications.

All listed parts are RoHS3 compliant with Moisture Sensitivity Level 1 (Unlimited) and are active products with established supply availability.

Frequently Asked Questions (FAQ)

Q: Can BC857CLT3G be used as a direct replacement for BC857CLT1G?

A: Yes. BC857CLT3G is a parametric equivalent with identical electrical specifications. The only difference is packaging format: BC857CLT3G is supplied in Tape & Reel format while BC857CLT1G is supplied in Cut Tape & Digi-Reel® format. Both parts are electrically and mechanically compatible.

Q: What is the difference between BC857C-7-F and the main part BC857CLT1G?

A: BC857C-7-F maintains the same collector current (100 mA), breakdown voltage (45 V), and saturation voltage (650 mV) as BC857CLT1G. The primary differences are: transition frequency is 200 MHz (versus 100 MHz), power dissipation is 300 mW (same as main part), and operating temperature range is -65°C to 150°C (versus -55°C to 150°C). BC857C-7-F is suitable for higher-frequency applications.

Q: Are Nexperia BC857C,215 and BC857C,235 interchangeable with BC857CLT1G?

A: These parts are functionally equivalent for most applications. Both maintain 100 mA collector current, 45 V breakdown voltage, and 650 mV saturation voltage. However, power dissipation is rated at 250 mW (versus 300 mW for BC857CLT1G), and the operating temperature range is -40°C to 150°C (versus -55°C to 150°C). Applications requiring operation below -40°C or maximum power dissipation near 300 mW should use BC857CLT1G or equivalent parts with higher power ratings.

Q: What is the purpose of SBC857CLT1G automotive qualification?

A: SBC857CLT1G carries AEC-Q101 automotive qualification, indicating enhanced reliability screening and testing for automotive applications. This part is suitable for automotive-grade designs where component qualification is required. Non-automotive applications can use standard BC857CLT1G or equivalent parts without automotive qualification.

Q: Can BC807-16-7-F or BC807-25-7-F replace BC857CLT1G?

A: No. While BC807 parts share the same package type (SOT-23-3) and voltage rating (45 V), they are rated for 500 mA collector current versus 100 mA for BC857CLT1G. These parts are suitable only for applications requiring higher current capacity. Using BC807 parts in current-limited applications designed for 100 mA operation is not recommended due to different saturation voltage (700 mV) and DC current gain characteristics.

Q: What packaging formats are available for BC857 equivalents?

A: BC857 equivalents are available in two packaging formats: Cut Tape (CT) & Digi-Reel® and Tape & Reel (TR). Cut Tape format is suitable for manual assembly and small-quantity applications. Tape & Reel format is optimized for automated pick-and-place assembly in high-volume production. Both formats use the same SOT-23-3 (TO-236) component package.

Q: Are all listed substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed in this reference are RoHS3 compliant with Moisture Sensitivity Level 1 (Unlimited). All parts are active products with established supply availability.

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