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

NXP Semiconductors BC847CW/DG/B2115

Name: BC847CW/DG/B2115
Brand: NXP Semiconductors
SKU: BC847CW/DG/B2115
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BC847CW/DG/B2115

Manufacturer:: NXP Semiconductors

Category:: Single Bipolar Transistors

Package:: SC-70, SOT-323

Datasheet:: BC847CW/DG/B2115.pdf

Description:: TRANS NPN 45V 0.1A SOT-323

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Product details

Overview

BC847CW/DG/B2115 from NXP Semiconductors is an AEC-Q101 qualified NPN general-purpose transistor in SOT323 (SC-70) package, rated for 45 V V_CEO, 100 mA I_C, and h_FE group C (420–800 at I_C = 2 mA, V_CE = 5 V). It serves as a compact, automotive-grade switching and amplification device in space-constrained PCBs such as automotive body control modules and sensor interface circuits.

For engineers reviewing the BC847CW/DG/B2115 datasheet, BC847CW/DG/B2115 pinout, BC847CW/DG/B2115 application, or BC847CW/DG/B2115 equivalent, key selection considerations include its SC-70 footprint compatibility, guaranteed h_FE ≥420, 200 mW power dissipation at T_amb ≤25 °C, and qualification per AEC-Q101 for automotive under-hood use.

Technical Context

This discrete NPN bipolar junction transistor operates with base-emitter turn-on voltage of 580–700 mV at I_C = 2 mA and exhibits V_CE(sat) ≤200 mV at I_C = 10 mA / I_B = 0.5 mA. Its transition frequency f_T is 100 MHz, supporting medium-speed digital switching and low-frequency analog amplification.

The device features low collector capacitance (C_c ≤1.5 pF) and emitter capacitance (C_e ≈11 pF), enabling stable performance in high-impedance bias networks and noise-sensitive preamplifier stages. Thermal resistance R_th(j-a) is 625 K/W on FR4 PCB, defining its derating behavior above ambient.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	45 V - Maximum safe collector-emitter voltage with base open; defines headroom for 24 V automotive supply rail switching.
I_C	100 mA - Continuous DC collector current rating; supports load switching up to ~100 mA without forced cooling.
h_FE (Group C)	420–800 - Guaranteed DC current gain range at 2 mA/5 V; enables predictable base drive sizing for saturation in logic-level interfaces.
V_CE(sat)	≤200 mV @ I_C=10 mA/I_B=0.5 mA - Low saturation voltage minimizes power loss and self-heating in switching applications.
P_tot	200 mW @ T_amb ≤25 °C - Total power dissipation limit in SOT323 package; requires thermal derating above 25 °C ambient.
f_T	100 MHz - Transition frequency confirms suitability for signal amplification up to ~10 MHz and fast digital edge handling.
AEC-Q101	Qualified - Meets stress test requirements for discrete semiconductors in automotive applications; supports under-hood deployment.

Pinout & Package

SOT323 (SC-70) plastic surface-mounted package; 3 leads; body dimensions 2.2 × 1.35 × 0.9 mm (L × W × H); standard footprint per Figure 14.

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Control terminal; requires current-limited drive (e.g., 1–10 kΩ series resistor) to achieve target I_C with known h_FE.
2	Emiter	Common reference node; connected to ground or low-side return path in common-emitter configurations.
3	Collector	Output/load terminal; handles switched current up to 100 mA; routed to minimize trace inductance in high-speed switching.

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive temperature range (−40 °C to +150 °C) and reliability stress tests; eliminates need for additional qualification effort in Tier-1 designs.
h_FE Group C selection	Guaranteed minimum h_FE of 420 ensures consistent base drive margin across production lots, reducing design iteration for bias network tuning.
SOT323 (SC-70) package	0.9 mm height and 2.2 × 1.35 mm footprint enable dense placement in compact modules like door ECU PCBs and LED driver subassemblies.
Low V_CE(sat)	≤200 mV at 10 mA allows >98% efficiency in low-power switching, minimizing heat generation in thermally constrained enclosures.
100 MHz f_T	Supports clean square-wave propagation up to 10 MHz, suitable for clock buffering, PWM signal inversion, and sensor signal conditioning.

Applications

Automotive Body Control Unit	Industrial Sensor Interface
Use Scenario: Driving small solenoids, relays, and indicator LEDs in door lock modules and seat position controllers. IC Role / Device Role / Timing Role: NPN switch controlling 12–24 V loads with microcontroller GPIO-level base drive. Use Value: AEC-Q101 qualification ensures long-term reliability in vibration-prone, temperature-cycled environments without derating penalties.	Use Scenario: Amplifying low-level analog signals from RTDs, thermistors, or bridge sensors before ADC sampling. IC Role / Device Role / Timing Role: Common-emitter amplifier stage providing fixed-gain signal boosting with minimal added noise. Use Value: 2 dB noise figure at 1 kHz and stable h_FE over −40 °C to +125 °C enable accurate, drift-free measurement across operating range.
Consumer Power Management	Medical Diagnostic Equipment
Use Scenario: Enabling/disabling auxiliary power rails (e.g., USB peripheral supplies, display backlight drivers) in portable devices. IC Role / Device Role / Timing Role: Low-side load switch activated by system controller to manage power sequencing and standby current. Use Value: 200 mW P_tot and 625 K/W R_th(j-a) allow direct mounting on standard FR4 without heatsinking in battery-powered form factors.	Use Scenario: Isolating patient-connected analog front-end circuitry from digital processing sections using optocoupler driver stages. IC Role / Device Role / Timing Role: Fast-switching transistor driving LED anode in linear optocoupler feedback paths. Use Value: 100 MHz f_T and <1.5 pF C_c preserve signal integrity and bandwidth in isolated communication channels compliant with IEC 60601-1 creepage requirements.

Automotive Body Control Unit

Industrial Sensor Interface

Use Scenario: Driving small solenoids, relays, and indicator LEDs in door lock modules and seat position controllers.

IC Role / Device Role / Timing Role: NPN switch controlling 12–24 V loads with microcontroller GPIO-level base drive.

Use Value: AEC-Q101 qualification ensures long-term reliability in vibration-prone, temperature-cycled environments without derating penalties.

Use Scenario: Amplifying low-level analog signals from RTDs, thermistors, or bridge sensors before ADC sampling.

IC Role / Device Role / Timing Role: Common-emitter amplifier stage providing fixed-gain signal boosting with minimal added noise.

Use Value: 2 dB noise figure at 1 kHz and stable h_FE over −40 °C to +125 °C enable accurate, drift-free measurement across operating range.

Consumer Power Management

Medical Diagnostic Equipment

Use Scenario: Enabling/disabling auxiliary power rails (e.g., USB peripheral supplies, display backlight drivers) in portable devices.

IC Role / Device Role / Timing Role: Low-side load switch activated by system controller to manage power sequencing and standby current.

Use Value: 200 mW P_tot and 625 K/W R_th(j-a) allow direct mounting on standard FR4 without heatsinking in battery-powered form factors.

Use Scenario: Isolating patient-connected analog front-end circuitry from digital processing sections using optocoupler driver stages.

IC Role / Device Role / Timing Role: Fast-switching transistor driving LED anode in linear optocoupler feedback paths.

Use Value: 100 MHz f_T and <1.5 pF C_c preserve signal integrity and bandwidth in isolated communication channels compliant with IEC 60601-1 creepage requirements.

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
BC847BW/DG/B2115	h_FE group B (200–450) instead of group C; otherwise identical electrical specs and SOT323 package.	Lower gain reduces base drive sensitivity but increases variation in saturated V_CE across lot-to-lot production.	Select when tighter h_FE tolerance is not required and cost optimization is prioritized over gain consistency.
MMBT3904LT1G	Same SOT23 package (not SOT323); V_CEO = 40 V (vs. 45 V); h_FE = 100–300 (no group C option); no AEC-Q101 qualification.	Larger footprint and lower voltage rating limit reuse in existing SC-70 layouts and automotive under-hood locations.	Choose only for non-automotive, cost-sensitive consumer applications where 40 V headroom and non-qualified status are acceptable.

Compared with BC847BW/DG/B2115, the BC847CW/DG/B2115 provides higher and more consistent current gain for precise base drive design; versus MMBT3904LT1G, it offers superior automotive qualification, higher breakdown voltage, and smaller SC-70 footprint-critical for space-constrained, safety-compliant systems.

Availability

BC847CW/DG/B2115 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor signal conditioning, and medical diagnostic equipment requiring stable component supply and long-term lifecycle support.

Supply support for BC847CW/DG/B2115 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

NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.

The BC847 series belongs to NXP's broad portfolio of AEC-Q101 qualified discretes, designed specifically to replace legacy through-hole transistors in automotive and industrial surface-mount assemblies while maintaining proven reliability and parametric consistency.

FAQ

What is the maximum collector-emitter voltage rating for BC847CW/DG/B2115?

The BC847CW/DG/B2115 has a maximum collector-emitter voltage (V_CEO) rating of 45 V with the base open. This rating is defined per IEC 60134 absolute maximum limits and applies across the full operating temperature range. Exceeding this voltage risks permanent breakdown, especially under transient conditions; designers should maintain ≥20 % margin for automotive 24 V systems.

Is BC847CW/DG/B2115 suitable for automotive applications?

Yes, BC847CW/DG/B2115 is AEC-Q101 qualified for discrete semiconductors, confirming compliance with stress tests including high-temperature reverse bias, temperature cycling, and humidity bias. It operates reliably from −40 °C to +150 °C junction temperature and is approved for use in automotive body control, lighting, and sensor modules-not life-critical safety systems.

What package type does BC847CW/DG/B2115 use, and what are its key mechanical dimensions?

BC847CW/DG/B2115 uses the SOT323 (SC-70) plastic surface-mounted package. Its body measures 2.2 mm length × 1.35 mm width × 0.9 mm height, with 0.65 mm lead pitch and standardized reflow footprint per NXP Figure 19. This compact size supports high-density routing in space-constrained PCBs such as automotive door modules.

How does the h_FE group C specification impact circuit design for BC847CW/DG/B2115?

The h_FE group C designation guarantees a DC current gain of 420–800 at V_CE = 5 V and I_C = 2 mA. This high and tightly bounded gain allows designers to use smaller base resistors, reduce base drive current consumption, and improve saturation consistency-especially valuable in battery-powered and thermally sensitive applications where BC847CW/DG/B2115 is deployed.

What is the thermal resistance from junction to ambient for BC847CW/DG/B2115 on a standard FR4 PCB?

The thermal resistance from junction to ambient (R_th(j-a)) for BC847CW/DG/B2115 mounted on a single-sided FR4 PCB with standard footprint is 625 K/W. This value assumes tin-plated copper and defines the temperature rise per watt of dissipated power; at 100 mW dissipation, junction temperature rises ~62.5 °C above ambient, requiring layout attention for sustained operation above 25 °C.

BC847CW/DG/B2115 Specifications

Product attributes: Attribute value

Manufacturer:: NXP Semiconductors

Series:: -

Package/Case:: SC-70, SOT-323

Packaging:: Bulk

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:: 200 mW

Frequency - Transition:: 100MHz

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-323

BC847CW/DG/B2115 FAQ

1.How can I place an order for BC847CW/DG/B2115 through Aetrix?

Please submit a Request for Quotation (RFQ) for BC847CW/DG/B2115 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 BC847CW/DG/B2115 reliable?

The price and inventory of BC847CW/DG/B2115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC847CW/DG/B2115 is usually 5 days.

3.What payment methods are accepted for BC847CW/DG/B2115?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC847CW/DG/B2115 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BC847CW/DG/B2115?

BC847CW/DG/B2115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BC847CW/DG/B2115 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 BC847CW/DG/B2115?

For technical support, including BC847CW/DG/B2115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC847CW/DG/B2115 requirements.

6.How does Aetrix verify that BC847CW/DG/B2115 is sourced from the original manufacturer or authorized distributors?

All BC847CW/DG/B2115 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 BC847CW/DG/B2115 meets industry standards.

7.What is the process for return or replacement of BC847CW/DG/B2115?

All BC847CW/DG/B2115 units undergo pre-shipment inspection (PSI). If there is an issue with BC847CW/DG/B2115, 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 BC847CW/DG/B2115 part is unused and in its original packaging.

Return procedure for BC847CW/DG/B2115:

1.Submit a request within 90 days.

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

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