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Nexperia USA Inc. BC847AW-QX
- Part No.:
- BC847AW-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
BC847AW-QX.pdf
- Description:
- TRANS NPN 45V 0.1A SOT-323
- Quantity:
- Payment:
- Shipping:
Inventory:2,688
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Product details
Overview
BC847AW-Q from Nexperia is an AEC-Q101-qualified NPN general-purpose transistor in SOT323 (SC-70) package, rated for 45 V VCEO, 100 mA IC, and DC current gain (hFE) of 110–220 at VCE = 5 V and IC = 2 mA. It serves as a low-power switching and amplification device in automotive signal conditioning, sensor interface, and LED driver stages.
For engineers reviewing the BC847AW-Q datasheet, BC847AW-Q pinout, BC847AW-Q application, or BC847AW-Q equivalent, key selection criteria include its automotive qualification, tight hFE bin (110–220), 200 mW Ptot at Tamb ≤ 25 °C, and SC-70 thermal resistance of 625 K/W on FR4 PCB - critical for space-constrained, thermally sensitive automotive modules.
Technical Context
This transistor operates as a silicon NPN bipolar junction device with open-base collector-emitter breakdown voltage of 45 V and emitter-base breakdown voltage of 6 V. Its hFE variation across temperature (−55 °C to +150 °C) and collector current (10 μA–100 mA) is characterized per Figures 2–5, supporting stable biasing in wide-temperature automotive environments.
VCE(sat) remains ≤ 400 mV at IC = 100 mA / IB = 5 mA, and VBE(sat) ≤ 900 mV under same conditions, enabling efficient low-voltage switching in 3.3 V and 5 V logic-driven circuits. Noise figure is specified at 2–10 dB (IC = 200 μA, f = 1 kHz), suitable for low-noise pre-amplifier front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 45 V - Maximum safe collector-emitter voltage before breakdown; supports 12 V automotive rail with margin. |
| IC | 100 mA continuous - Sufficient for driving small relays, LEDs, or logic-level MOSFET gates in body electronics. |
| hFE | 110–220 at VCE = 5 V, IC = 2 mA - Tight gain bin enables predictable base resistor sizing without trimming. |
| VCE(sat) | ≤ 400 mV at IC = 100 mA, IB = 5 mA - Low saturation voltage minimizes power loss and heat generation in switching mode. |
| Ptot | 200 mW at Tamb ≤ 25 °C on FR4 PCB - Defines thermal derating envelope for surface-mount layout planning. |
| Rth(j-a) | 625 K/W - Junction-to-ambient thermal resistance informs board-level copper area requirements for thermal management. |
| AEC-Q101 | Qualified - Meets stress test requirements for automotive discrete semiconductors (temperature cycling, HTRB, ESD). |
Pinout & Package
SOT323 (SC-70) plastic surface-mounted package: 1.35 mm × 1.75 mm footprint, 0.95 mm height, 3-terminal leadless outline with gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base (B) | Current-controlled input node; requires series resistor to limit IB and ensure saturation or linear operation. |
| 2 | Emitter (E) | Common reference terminal; connected to ground or low-side return path in common-emitter configurations. |
| 3 | Collector (C) | Output current sink node; interfaces with load (e.g., LED anode, relay coil, MOSFET gate) in low-side switch topology. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, high-temperature reverse bias, and ESD robustness. |
| Tight hFE bin (110–220) | Reduces need for production calibration or feedback compensation in fixed-gain amplifier stages. |
| Low VCE(sat) (≤ 400 mV) | Enables <10 mW conduction loss at 100 mA, improving efficiency in battery-powered modules. |
| SC-70 footprint compatibility | Matches industry-standard reflow soldering profiles and pick-and-place tooling for high-yield SMT assembly. |
| 150 °C maximum junction temperature | Supports operation in under-hood environments where ambient exceeds 105 °C with proper board thermal design. |
Applications
| Automotive Door Module Switching | Engine Control Unit Sensor Interface |
|---|---|
|
Use Scenario: Driving window lift motor control logic and door lock solenoids via microcontroller GPIO. IC Role / Device Role / Timing Role: Low-side switch controlling 12 V loads with fast turn-on/turn-off response. Use Value: 400 mV VCE(sat) limits power dissipation to <40 mW at 100 mA, reducing thermal stress in sealed module enclosures. |
Use Scenario: Amplifying analog signals from crankshaft position or coolant temperature sensors. IC Role / Device Role / Timing Role: Small-signal NPN amplifier in DC-coupled front-end stage with stable hFE over −40 °C to +125 °C. Use Value: 2–10 dB noise figure and 100 MHz fT support accurate low-frequency sensor signal conditioning without added complexity. |
| LED Lighting Control in Instrument Cluster | Body Control Module Logic-Level Translation |
|
Use Scenario: PWM dimming of red/green status LEDs in dashboard displays. IC Role / Device Role / Timing Role: Constant-current switch modulating LED current at 1–10 kHz PWM frequency. Use Value: Fast switching characteristics (fT = 100 MHz) ensure clean PWM edges and minimal duty-cycle distortion. |
Use Scenario: Level-shifting 3.3 V MCU outputs to drive 5 V or 12 V peripheral enable lines. IC Role / Device Role / Timing Role: Digital buffer/inverter with defined logic thresholds and rail-compatible output swing. Use Value: Verified 6 V VEBO and 50 V VCBO prevent latch-up when interfacing mixed-voltage domains in BCM subsystems. |
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-Q | Higher hFE bin (200–450); identical VCEO, IC, and package. | Better suited for low-base-drive applications (e.g., high-impedance MCU GPIO), but may require tighter IB tolerance control. | Select when base current is limited and higher gain stability is needed; verify saturation margin at target IC. |
| MMBT3904LT1G | Non-automotive grade; hFE 100–300; same SOT-23 package (not SC-70), larger footprint and thermal resistance. | Lacks AEC-Q101 qualification; unsuitable for safety-critical or under-hood automotive use. | Acceptable only for non-automotive industrial or consumer prototypes; not recommended for production automotive designs. |
Compared with BC847BW-Q and MMBT3904LT1G, BC847AW-Q offers optimal balance of automotive qualification, moderate gain consistency, and SC-70 space efficiency - making it preferred for volume automotive modules where reliability, size, and predictable biasing are jointly prioritized.
Availability
BC847AW-Q is available at Aetrix Electronics and suitable for automotive door modules, engine control unit sensor interfaces, instrument cluster LED drivers, and body control module logic translation requiring stable component supply and AEC-Q101 compliance.
Supply support for BC847AW-Q 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 high-volume, high-reliability essential semiconductors for automotive, industrial, and consumer markets.
The BC847xW-Q series targets cost-sensitive, space-constrained automotive electronics requiring qualified discretes for switching and amplification - designed specifically to replace legacy BC847 variants with enhanced process control and AEC-Q101 validation.
FAQ
Is BC847AW-Q pin-compatible with standard BC847W in SOT23?
No. BC847AW-Q uses SOT323 (SC-70), a smaller 1.35 mm × 1.75 mm package with different pad layout and thermal profile than SOT23. Mechanical and soldering footprints are incompatible; redesign of PCB land pattern and stencil is required for migration.
What is the maximum allowable base current for continuous operation?
The absolute maximum peak base current is 100 mA (single pulse, tp ≤ 1 ms), but continuous IB must be limited to maintain Tj ≤ 150 °C. At IC = 100 mA and hFE = 180 (typ), IB ≈ 556 µA; practical design uses ≥10× safety margin, so ≤50 µA continuous is recommended for reliable long-term operation.
Does BC847AW-Q support pulsed operation beyond 100 mA?
Yes. The peak collector current rating is 200 mA for single pulses ≤1 ms (duty cycle ≤ 0.02). This enables short-duration surge handling - e.g., inductive kickback suppression or burst-mode LED driving - provided average power remains within 200 mW derating limits.
How does the 625 K/W thermal resistance impact PCB layout?
With Rth(j-a) = 625 K/W on standard FR4 (single-sided copper), 100 mW dissipation causes ~62.5 K junction-to-ambient rise. To hold Tj ≤ 150 °C at 85 °C ambient, add ≥25 mm² of 1 oz copper pour connected to emitter pad, or use thermal vias to inner layers, to reduce effective Rth below 500 K/W.
BC847AW-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BC847xW-Q
- Package/Case:
- SC-70, SOT-323
- 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:
- 110 @ 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
BC847AW-QX FAQ
1.How can I place an order for BC847AW-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BC847AW-QX 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 BC847AW-QX reliable?
The price and inventory of BC847AW-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC847AW-QX is usually 5 days.
3.What payment methods are accepted for BC847AW-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC847AW-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC847AW-QX?
BC847AW-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC847AW-QX 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 BC847AW-QX?
For technical support, including BC847AW-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC847AW-QX requirements.
6.How does Aetrix verify that BC847AW-QX is sourced from the original manufacturer or authorized distributors?
All BC847AW-QX 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 BC847AW-QX meets industry standards.
7.What is the process for return or replacement of BC847AW-QX?
All BC847AW-QX units undergo pre-shipment inspection (PSI). If there is an issue with BC847AW-QX, 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 BC847AW-QX part is unused and in its original packaging.
Return procedure for BC847AW-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC847AW-QX Tags
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MMBT3906LT1G
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MMBT3904LT1G
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MMBT3906-7-F
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BC847B,215
Nexperia USA Inc.
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MMBTA06LT1G
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