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Home > Products > Discrete Semiconductor Products > Transistors > Bipolar (BJT) > Single Bipolar Transistors

Nexperia USA Inc. BC847CQAZ

Name: BC847CQAZ
Brand: Nexperia USA Inc.
SKU: BC847CQAZ
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BC847CQAZ

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

Package:: 3-XDFN Exposed Pad

Datasheet:: BC847CQAZ.pdf

Description:: TRANS NPN 45V 0.1A DFN1010D-3

Quantity:: RFQ Add To RFQ list

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Inventory:3,740

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Product details

Overview

BC847CQAZ from Nexperia is an AEC-Q101-qualified NPN general-purpose transistor in a leadless DFN1010D-3 (SOT1215) package, rated for 45 V V_CEO, 100 mA I_C, and offering h_FE = 420–800 at I_C = 2 mA / V_CE = 5 V. It serves as a compact, high-reliability switching and amplification device in space-constrained automotive and mobile PCBs.

For engineers reviewing the BC847CQAZ datasheet, BC847CQAZ pinout, BC847CQAZ application, or BC847CQAZ equivalent, this part supports AOI-compatible solder joint inspection, operates across −55 °C to +150 °C ambient, and delivers low V_CE(sat) (90–400 mV) under defined drive conditions - critical for battery-powered signal routing and load control.

Technical Context

This NPN bipolar junction transistor uses silicon planar epitaxial technology with a three-terminal configuration (base, emitter, collector) optimized for linear amplification and saturated switching. Its DFN1010D-3 package integrates visible and solderable side pads for reliable reflow attachment and automated optical inspection.

The device meets AEC-Q101 stress test requirements for discrete semiconductors, confirming suitability for automotive power management, sensor interface biasing, and logic-level translation where thermal robustness (T_j ≤ +150 °C) and stable DC current gain across temperature are required.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	45 V - Maximum safe collector-emitter voltage before breakdown; enables use in 36 V automotive supply rails with margin.
I_C	100 mA continuous - Supports moderate-signal switching loads such as LED drivers, relay coils, and small solenoids.
h_FE	420–800 at I_C = 2 mA - High DC current gain reduces required base drive current, easing microcontroller GPIO sourcing.
V_CE(sat)	90–200 mV at I_C = 10 mA / I_B = 0.5 mA - Low saturation voltage minimizes power loss and self-heating in switching applications.
Package	DFN1010D-3 (SOT1215), 1.1 × 1.0 × 0.37 mm - Ultra-thin, leadless SMD footprint ideal for ultra-dense mobile and ADAS PCB layouts.
AEC-Q101	Qualified - Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock per AEC standard.
T_amb	−55 °C to +150 °C - Enables operation in engine bay, powertrain, and infotainment modules without derating.

Pinout & Package

DFN1010D-3 (SOT1215) is a thermally enhanced, leadless plastic package with visible side pads for solder joint inspection and improved thermal conduction. Dimensions: 1.1 mm × 1.0 mm × 0.37 mm height.

Pin/Terminal	Circuit Role	Design Meaning
1	Base (B)	Control terminal; accepts low-current input to modulate collector-emitter conduction path.
2	Emitter (E)	Current return path; typically tied to ground or low-side reference in common-emitter configurations.
3	Collector (C)	Main output terminal; carries switched load current from V_CC through external load to emitter.
4	Collector (C)	Dual-collector terminal improves current handling and thermal dissipation; electrically connected to Pin 3.

Key Features

Feature	Design Value
Three h_FE selections	BC847AQA (110–220), BC847BQA (200–450), BC847CQA (420–800) - Enables precise gain matching for analog stages or consistent switching thresholds.
AOI-compatible side pads	Visible and solderable terminals on package edges - Allows automated optical inspection of solder fillets without X-ray.
Ultra-low profile	0.37 mm max height - Reduces board stack-up height in slim smartphones, wearables, and camera modules.
Thermal enhancement	P_tot = 440 mW on 4-layer FR4 - Higher power handling than standard SOT-23 equivalents due to improved copper thermal spreading.
AEC-Q101 qualification	Validated for automotive discrete applications - Eliminates need for additional qualification testing in Tier-1 supply chains.

Applications

Automotive Door Module

Smartphone Power Sequencing

Use Scenario: Controlling window lift motor enable signals and mirror fold/unfold relays in body control units.

IC Role / Device Role / Timing Role: NPN switch providing low-side grounding path for 12 V relay coils with fast turn-on/turn-off response.

Use Value: AEC-Q101 qualification ensures long-term reliability under vibration and thermal cycling; low V_CE(sat) limits coil heating during extended actuation.

Use Scenario: Enabling/disabling auxiliary PMIC rails or sensor bias supplies during boot and sleep states.

IC Role / Device Role / Timing Role: General-purpose level-shifting switch translating 1.8 V GPIO to 3.3 V or 5 V load enable lines.

Use Value: Compact DFN1010D-3 footprint saves area in multi-rail power management IC layouts; high h_FE reduces MCU GPIO loading.

USB-C Port Protection

Industrial Sensor Interface

Use Scenario: Driving overvoltage protection FET gate or enabling ESD clamp ICs during hot-plug detection.

IC Role / Device Role / Timing Role: Fast-switching NPN used in discrete protection logic to assert fault signals or disable downstream circuitry.

Use Value: 100 MHz f_T supports sub-microsecond response to transient events; low C_c (1.5 pF) avoids signal integrity degradation on high-speed lines.

Use Scenario: Biasing precision op-amp input stages or conditioning thermistor/RTD bridge outputs in PLC analog input modules.

IC Role / Device Role / Timing Role: Active load or current source in low-noise amplifier front-ends requiring stable DC operating point.

Use Value: NF = 2–10 dB at 1 kHz enables low-noise signal conditioning; tight h_FE binning (420–800) improves channel-to-channel gain matching.

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN general-purpose transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BC847C,315 (SOT23)	Same electrical specs but in larger SOT23-3 package (2.9 × 1.3 × 1.0 mm); no AEC-Q101 qualification.	Lacks automotive qualification and AOI-friendly side pads; unsuitable for space-constrained or safety-critical designs.	Select only for non-automotive prototypes or cost-sensitive consumer boards where footprint size is not constrained.
MMBT3904LT1G	40 V V_CEO, 200 mA I_C, h_FE = 100–300; SOT-23 package; AEC-Q101 qualified.	Higher current rating but lower gain range; less suitable for low-drive GPIO interfacing where h_FE > 400 is needed.	Prefer when higher collector current capability is required and gain stability at low I_C is secondary.

Compared with BC847CQAZ, the BC847C,315 offers identical transistor characteristics but lacks automotive qualification and miniaturization; MMBT3904LT1G trades gain precision for higher current capacity and broader industrial acceptance - making BC847CQAZ optimal for AEC-compliant, space-limited gain-critical switching.

Availability

BC847CQAZ is available at Aetrix Electronics and suitable for automotive body electronics, mobile power sequencing, USB-C protection circuits, and industrial sensor interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for BC847CQAZ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Nexperia is a global semiconductor expert focused on essential efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and mobile markets.

The BC847XQA series belongs to Nexperia's AEC-Q101-qualified general-purpose transistor product line, engineered specifically for high-reliability signal switching and amplification in thermally demanding, space-constrained automotive and portable electronics.

FAQ

What is the maximum allowable junction temperature for BC847CQAZ?

The absolute maximum junction temperature (T_j) is +150 °C, as specified in Table 6 of the Nexperia datasheet. This limit applies under all operating conditions, and sustained operation above this temperature risks permanent parametric shift or failure. Thermal design must ensure R_th(j-a) ≤ 284 K/W (on 4-layer FR4) to maintain T_j within spec at full P_tot.

Does BC847CQAZ have a built-in ESD protection diode?

No - BC847CQAZ is a bare NPN bipolar transistor without integrated ESD protection. The datasheet specifies no human-body model (HBM) or charged-device model (CDM) ratings. External TVS or series resistance is required in high-ESD environments, especially in handheld or automotive exterior-facing applications.

Can BC847CQAZ be used in linear amplifier configurations?

Yes - its f_T = 100 MHz, low noise figure (2–10 dB at 1 kHz), and stable h_FE across I_C make it suitable for low-frequency linear amplification (e.g., sensor signal conditioning up to ~10 MHz). However, V_CE must remain ≥ 1 V to avoid saturation, and thermal derating is required above 25 °C ambient per Figure 2.

How does the dual-collector pin (Pins 3 and 4) affect PCB layout?

Pins 3 and 4 are internally shorted collector terminals, intended to improve current sharing and thermal dissipation. Layout requires identical copper area and solder paste volume on both pads; asymmetric routing may cause current imbalance or localized heating. The recommended reflow footprint (Figure 18) specifies symmetric 0.45 mm × 0.35 mm lands for each collector pad.

BC847CQAZ Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: 3-XDFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 100 mA

Voltage - Collector Emitter Breakdown (Max):: 45 V

Vce Saturation (Max) @ Ib, Ic:: 400mV @ 5mA, 100mA

Current - Collector Cutoff (Max):: 15nA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 420 @ 2mA, 5V

Power - Max:: 280 mW

Frequency - Transition:: 100MHz

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: DFN1010D-3

BC847CQAZ FAQ

1.How can I place an order for BC847CQAZ through Aetrix?

Please submit a Request for Quotation (RFQ) for BC847CQAZ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for BC847CQAZ reliable?

The price and inventory of BC847CQAZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC847CQAZ is usually 5 days.

3.What payment methods are accepted for BC847CQAZ?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC847CQAZ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BC847CQAZ?

BC847CQAZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BC847CQAZ order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for BC847CQAZ?

For technical support, including BC847CQAZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC847CQAZ requirements.

6.How does Aetrix verify that BC847CQAZ is sourced from the original manufacturer or authorized distributors?

All BC847CQAZ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that BC847CQAZ meets industry standards.

7.What is the process for return or replacement of BC847CQAZ?

All BC847CQAZ units undergo pre-shipment inspection (PSI). If there is an issue with BC847CQAZ, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The BC847CQAZ part is unused and in its original packaging.

Return procedure for BC847CQAZ:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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