BC856BW-QF Equivalent & Substitute Parts

Part Overview

The BC856BW-QF is an active-status PNP bipolar junction transistor manufactured by Nexperia USA Inc., qualified to AEC-Q101 automotive standards. This surface-mount device in SOT-323 packaging is designed for general-purpose switching and amplification applications requiring 65 V collector-emitter breakdown voltage and 100 mA maximum collector current. Equivalent and substitute parts are identified based on matching electrical specifications, package compatibility, and automotive qualification status to support component procurement flexibility and supply chain continuity.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP	—
Voltage - Collector Emitter Breakdown (Max)	65	V
Current - Collector (Ic) (Max)	100	mA
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	—

Substitute Part Grouping Explanation

Substitution of the BC856BW-QF is determined by strict equivalence across the following electrical and mechanical parameters:

Substitution Criteria:

Transistor type: PNP
Collector-emitter breakdown voltage: 65 V
Maximum collector current: 100 mA
Vce saturation: 600 mV @ 5 mA, 100 mA
Collector cutoff current: 15 nA
DC current gain (hFE): 125 minimum @ 2 mA, 5 V
Maximum power dissipation: 200 mW
Transition frequency: 100 MHz
Operating temperature: 150°C
Package: SOT-323 (SC-70)
Mounting: Surface Mount
Automotive grade with AEC-Q101 qualification
RoHS3 compliance

All substitute parts listed below meet these criteria without exception. Substitution is valid across all identified equivalent part numbers within the BC856 base product family.

Parameter Comparison

Parameter	BC856BW-QF	BC856AW,115	BC856AW,135	BC856BW-QX	BC856W,115	BC856W,135
Transistor Type	PNP	PNP	PNP	PNP	PNP	PNP
Voltage - Collector Emitter Breakdown (Max)	65 V	65 V	65 V	65 V	65 V	65 V
Current - Collector (Ic) (Max)	100 mA	100 mA	100 mA	100 mA	100 mA	100 mA
Vce Saturation (Max) @ Ib, Ic	600 mV @ 5 mA, 100 mA	600 mV @ 5 mA, 100 mA	600 mV @ 5 mA, 100 mA	600 mV @ 5 mA, 100 mA	600 mV @ 5 mA, 100 mA	600 mV @ 5 mA, 100 mA
Current - Collector Cutoff (Max)	15 nA	15 nA	15 nA	15 nA	15 nA	15 nA
DC Current Gain (hFE) (Min) @ Ic, Vce	125 @ 2 mA, 5 V	125 @ 2 mA, 5 V	125 @ 2 mA, 5 V	125 @ 2 mA, 5 V	125 @ 2 mA, 5 V	125 @ 2 mA, 5 V
Power - Max	200 mW	200 mW	200 mW	200 mW	200 mW	200 mW
Frequency - Transition	100 MHz	100 MHz	100 MHz	100 MHz	100 MHz	100 MHz
Operating Temperature (TJ)	150°C	150°C	150°C	150°C	150°C	150°C
Package / Case	SC-70, SOT-323	SC-70, SOT-323	SC-70, SOT-323	SC-70, SOT-323	SC-70, SOT-323	SC-70, SOT-323
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Grade	Automotive	Automotive	Automotive	Automotive	Automotive	Automotive
Qualification	AEC-Q101	AEC-Q101	AEC-Q101	AEC-Q101	AEC-Q101	AEC-Q101
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	Not specified

Engineering Selection Recommendations

All substitute parts listed are active-status components manufactured by Nexperia USA Inc. (or NXP USA Inc. for BC856W,135) and maintain full compliance with AEC-Q101 automotive qualification and ROHS3 environmental standards where specified. Selection among equivalent parts is based on packaging format and inventory availability:

Tape & Reel (TR) Packaging:

BC856AW,115: 4,100 units in stock
BC856AW,135: 10,789 units in stock
BC856BW-QX: 1,182 units in stock
BC856W,115: 20,408 units in stock

Bulk Packaging:

BC856W,135: 25,279 units in stock

All parts are electrically and mechanically interchangeable with the BC856BW-QF. Selection should be based on procurement requirements, packaging preference, and supply availability. The BC856 base product family designation confirms functional equivalence across all listed part numbers.

Frequently Asked Questions (FAQ)

Q: Are all listed substitute parts electrically identical to the BC856BW-QF?

A: Yes. All substitute parts meet identical electrical specifications including 65 V collector-emitter breakdown voltage, 100 mA maximum collector current, 600 mV Vce saturation, 125 minimum DC current gain, 200 mW power dissipation, and 100 MHz transition frequency. They are parametric equivalents.

Q: What is the difference between BC856AW and BC856W variants?

A: The variants represent different manufacturing codes within the BC856 base product family. All variants listed maintain identical electrical performance and automotive AEC-Q101 qualification. Differences are manufacturing-related and do not affect circuit performance.

Q: Can BC856BW-QF be replaced with BC856W,135 in production?

A: Yes, provided the packaging format change from Tape & Reel to Bulk is acceptable for your assembly process. Electrical and mechanical specifications are identical, and automotive qualification is maintained.

Q: What does the suffix designation (QF, QX, AW, W) indicate?

A: Suffix designations represent manufacturing codes and packaging specifications assigned by Nexperia. All suffixes within the BC856 family are equivalent for circuit design purposes when electrical parameters match.

Q: Are moisture sensitivity levels specified for all parts?

A: Moisture Sensitivity Level (MSL) 1 (Unlimited) is specified for BC856AW,115, BC856AW,135, BC856BW-QX, and BC856W,115. MSL data is not provided for BC856BW-QF or BC856W,135 in the available specifications.

Q: Is the SOT-323 package the same as SC-70?

A: Yes. SOT-323 and SC-70 are equivalent designations for the same surface-mount package. All listed parts use this identical package format.

Q: Can these parts be used in non-automotive applications?

A: Yes. Automotive-grade components with AEC-Q101 qualification meet or exceed requirements for general industrial and commercial applications. The automotive qualification indicates higher reliability standards.

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