BC856AQB-QZ Equivalent & Substitute Parts Reference

Part Overview

The Nexperia USA Inc. BC856AQB-QZ is an automotive-grade PNP bipolar junction transistor (BJT) intended for small-signal applications. It features a maximum collector current of 100 mA, a maximum collector-emitter breakdown voltage of 65 V, high current gain, and a maximum power dissipation of 340 mW. With an operating junction temperature of up to 150°C and wettable flank surface-mount package (DFN1110D-3), the BC856AQB-QZ is RoHS3 compliant, AEC-Q101 qualified, and suitable for automotive and industrial designs. Finding equivalent or substitute models is necessary for maintaining BOM integrity, ensuring supply chain continuity, and supporting design flexibility while matching all parametric and package requirements.

Substiute Parts

BC856AQB-QZ

Nexperia USA Inc.In Stock: 6060BC856AQB-QZ Datasheet

Current PartRFQ

BC856AQBZ

Nexperia USA Inc.In Stock: 6246BC856AQBZ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitutes are selected strictly based on matching key parameters, compliance, and package compatibility. The main criteria are:

• Transistor type (PNP)
• Maximum collector current (100 mA)
• Maximum collector-emitter breakdown voltage (65 V)
• Maximum power dissipation (340 mW)
• DC current gain and switching frequency
• Package (3-XDFN Exposed Pad / DFN1110D-3) and mounting type (Surface Mount, Wettable Flank)
• Automotive qualification (AEC-Q101)
• Environmental compliance (RoHS3)

Only parts fully matching these criteria are considered equivalent and suitable for substitution.

Parameter Comparison

Engineering Selection Recommendations

Selection between BC856AQB-QZ and BC856AQBZ can be based on inventory, product status, RoHS3 compliance, and AEC-Q101 automotive qualification. Both parts are active, RoHS3 compliant, AEC-Q101 qualified, and use the same supplier device package and mounting type.

Frequently Asked Questions (FAQ)

Q1: What are the primary criteria used for substituting the BC856AQB-QZ BJT transistor?
A1: The primary criteria include transistor type (PNP), collector current (100 mA), collector-emitter voltage (65 V), package (3-XDFN Exposed Pad / DFN1110D-3), mounting type, power dissipation, current gain, frequency, automotive qualification (AEC-Q101), and RoHS3 compliance.

Q2: Is BC856AQBZ a pin-to-pin drop-in replacement for BC856AQB-QZ?
A2: BC856AQBZ matches all electrical, mechanical, and package specifications provided, making it directly substitutable for BC856AQB-QZ within the parametric constraints listed.

Q3: Does package compatibility affect the substitution?
A3: Yes, both BC856AQB-QZ and BC856AQBZ use the same 3-XDFN Exposed Pad (DFN1110D-3) package and are surface mount with wettable flanks.

Q4: Are both parts automotive qualified and compliant with environmental standards?
A4: Both BC856AQB-QZ and BC856AQBZ are noted as AEC-Q101 qualified and ROHS3 compliant, according to the information provided.

Q5: Do any inventory or lifecycle concerns impact selection?
A5: Both parts are listed as active with current inventory available, supporting interchangeable use from a supply continuity perspective.