BC856AW,115 Equivalent & Substitute Parts

Part Overview

The BC856AW,115 is an active PNP bipolar junction transistor manufactured by Nexperia USA Inc., designed for surface mount applications in the SOT-323 package. This component operates at a maximum collector current of 100 mA with a collector-emitter breakdown voltage of 65 V, making it suitable for low-power signal switching and amplification circuits. The part carries automotive-grade qualification (AEC-Q101) and is RoHS3 compliant. Equivalent and substitute parts are identified to support design flexibility, supply chain continuity, and application-specific performance requirements where parametric compatibility is maintained.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP	—
Current - Collector (Ic) Max	100	mA
Voltage - Collector Emitter Breakdown (Max)	65	V
Vce Saturation (Max) @ Ib, Ic	600 mV @ 5 mA, 100 mA	—
Current - Collector Cutoff (Max)	15	nA
DC Current Gain (hFE) Min @ Ic, Vce	125 @ 2 mA, 5 V	—
Power - Max	200	mW
Frequency - Transition	100	MHz
Operating Temperature (TJ)	150	°C
Package / Case	SC-70, SOT-323	—
Mounting Type	Surface Mount	—
Grade	Automotive	—
Qualification	AEC-Q101	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the BC856AW,115 are classified into three categories based on parametric equivalence and functional compatibility:

Parametric Equivalents (Nexperia): Parts BC856AW,135, BC856BW-QX, BC856W,115, and BC856W,135 maintain identical electrical specifications across collector current (100 mA), collector-emitter breakdown voltage (65 V), saturation voltage (600 mV @ 5 mA, 100 mA), DC current gain (125 @ 2 mA, 5 V), power dissipation (200 mW), and transition frequency (100 MHz). These parts differ only in packaging designation or tape reel configuration and are direct functional replacements within the same manufacturer ecosystem.

Direct Manufacturer Equivalents (Diodes Incorporated): The BC856AW-7-F from Diodes Incorporated maintains the same collector current (100 mA), breakdown voltage (65 V), DC current gain (125 @ 2 mA, 5 V), and power rating (200 mW). This part features an elevated transition frequency of 200 MHz and operates across an extended temperature range (-65°C to 150°C). The saturation voltage specification differs slightly (650 mV @ 5 mA, 100 mA).

Similar Alternatives (Higher Performance or Current Rating): Parts BC856BW-7-F (Diodes Incorporated), BC856BWT1G (onsemi), DSS5160U-7 (Diodes Incorporated), MMBT2907AWT1G (onsemi), and MMST2907A-7-F (Diodes Incorporated) provide functional substitution with variations in collector current capacity, transition frequency, or DC current gain. These parts maintain the 65 V or 60 V breakdown voltage specification and SOT-323 package form factor but differ in maximum current handling or frequency response.

Substitution eligibility is determined by matching the following critical parameters: PNP transistor type, collector-emitter breakdown voltage (65 V minimum), collector current capacity (100 mA minimum), saturation voltage characteristics, DC current gain, SOT-323 package compatibility, and surface mount mounting type.

Parameter Comparison

Part Number	Manufacturer	Ic (Max) mA	Vce Breakdown (Max) V	Vce Sat (Max) mV	hFE (Min)	Power (Max) mW	Frequency (Max) MHz	Temp Range °C	Package	Grade
BC856AW,115	Nexperia USA Inc.	100	65	600	125	200	100	0 to 150	SOT-323	Automotive
BC856AW,135	Nexperia USA Inc.	100	65	600	125	200	100	0 to 150	SOT-323	Automotive
BC856BW-QX	Nexperia USA Inc.	100	65	600	125	200	100	0 to 150	SOT-323	Automotive
BC856W,115	Nexperia USA Inc.	100	65	600	125	200	100	0 to 150	SOT-323	Automotive
BC856W,135	NXP USA Inc.	100	65	600	125	200	100	0 to 150	SOT-323	Automotive
BC856AW-7-F	Diodes Incorporated	100	65	650	125	200	200	-65 to 150	SOT-323	—
BC856BW-7-F	Diodes Incorporated	100	65	650	220	200	200	-65 to 150	SOT-323	—
BC856BWT1G	onsemi	100	65	650	220	150	100	-55 to 150	SOT-323	—
DSS5160U-7	Diodes Incorporated	1000	60	340	150	400	150	-55 to 150	SOT-323	—
MMBT2907AWT1G	onsemi	600	60	1600	100	150	200	-55 to 150	SOT-323	—
MMST2907A-7-F	Diodes Incorporated	600	60	1600	100	200	200	-55 to 150	SOT-323	—

Engineering Selection Recommendations

Direct Substitution (Nexperia Variants): The parts BC856AW,135, BC856BW-QX, BC856W,115, and BC856W,135 are functionally identical to the BC856AW,115 across all critical electrical parameters. All maintain automotive-grade qualification and AEC-Q101 certification. These parts are suitable for direct replacement in existing designs without circuit modification. Selection among these variants is determined by packaging configuration and tape reel availability.

Cross-Manufacturer Substitution (Diodes Incorporated BC856AW-7-F): This part maintains parametric equivalence in collector current, breakdown voltage, and DC current gain. The elevated transition frequency (200 MHz) and extended operating temperature range (-65°C to 150°C) provide enhanced performance margins. The saturation voltage specification (650 mV) is marginally higher than the primary part. This substitution is suitable for applications requiring improved frequency response or extended temperature operation. Automotive qualification is not specified for this variant.

Higher Current Capacity Alternatives: Parts DSS5160U-7, MMBT2907AWT1G, and MMST2907A-7-F provide collector current ratings of 600 mA to 1 A, exceeding the 100 mA specification of the BC856AW,115. These parts are suitable only for applications where increased current handling is required and circuit design accommodates the different saturation voltage characteristics. The reduced breakdown voltage (60 V) in MMBT2907AWT1G and MMST2907A-7-F requires verification against circuit maximum voltage specifications.

Selection Criteria: For direct replacement in automotive applications, select from the Nexperia BC856 family variants. For non-automotive applications requiring enhanced frequency response, the Diodes Incorporated BC856AW-7-F is suitable. For applications requiring higher current capacity, evaluate DSS5160U-7, MMBT2907AWT1G, or MMST2907A-7-F based on specific circuit voltage and current requirements.

Frequently Asked Questions (FAQ)

Q: Can BC856AW,135 be used as a direct replacement for BC856AW,115?

A: Yes. Both parts are manufactured by Nexperia USA Inc. and maintain identical electrical specifications: 100 mA collector current, 65 V breakdown voltage, 600 mV saturation voltage, 125 DC current gain, 200 mW power rating, and 100 MHz transition frequency. The difference is in tape reel configuration. Both carry automotive-grade qualification and AEC-Q101 certification.

Q: What is the difference between BC856AW-7-F (Diodes Incorporated) and BC856AW,115 (Nexperia)?

A: The BC856AW-7-F maintains the same collector current (100 mA), breakdown voltage (65 V), and DC current gain (125) specifications. Differences include: transition frequency is doubled to 200 MHz, operating temperature range extends to -65°C, and saturation voltage is slightly higher at 650 mV. Automotive qualification is not specified for the Diodes part.

Q: Can MMBT2907AWT1G replace BC856AW,115 in all applications?

A: MMBT2907AWT1G is not a direct replacement. While both are PNP transistors in SOT-323 packages, the MMBT2907AWT1G has a reduced collector-emitter breakdown voltage (60 V versus 65 V), higher collector current capacity (600 mA versus 100 mA), and significantly higher saturation voltage (1.6 V versus 600 mV). Substitution is only suitable for applications where the circuit design accommodates these parameter differences.

Q: Are all substitute parts RoHS3 compliant?

A: All listed substitute parts carry RoHS3 compliance status. Moisture sensitivity level (MSL) is rated as 1 (Unlimited) for all parts, indicating no moisture sensitivity restrictions.

Q: What is the significance of the SOT-323 package designation?

A: SOT-323 (also designated SC-70) is a three-terminal surface mount package with identical pinout and footprint across all listed parts. This ensures mechanical and electrical compatibility at the PCB level. All substitute parts maintain this package standard.

Q: Which substitute parts maintain automotive-grade qualification?

A: The Nexperia variants (BC856AW,135, BC856BW-QX, BC856W,115, BC856W,135) all carry automotive-grade designation and AEC-Q101 qualification. The Diodes Incorporated and onsemi parts do not specify automotive qualification in the provided data.

Q: Can BC856BW-7-F be used where BC856AW,115 is specified?

A: BC856BW-7-F from Diodes Incorporated maintains the same collector current (100 mA), breakdown voltage (65 V), and power rating (200 mW). However, the DC current gain is elevated to 220 (versus 125), and transition frequency is doubled to 200 MHz. This part is functionally compatible but provides enhanced gain and frequency response. Automotive qualification is not specified.

Q: What is the inventory status of substitute parts?

A: Inventory levels vary significantly. BC856W,135 has the highest availability (25,279 pcs), followed by BC856BW-7-F (179,100 pcs). BC856BW-QX has the lowest availability (1,182 pcs) among Nexperia variants. Diodes Incorporated and onsemi parts show substantial inventory levels ranging from 6,300 to 455,200 pcs.

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