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Nexperia USA Inc. BC847CW/MIX
- Part No.:
- BC847CW/MIX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
BC847CW/MIX.pdf
- Description:
- TRANS NPN 45V 0.1A SOT-323
- Quantity:
- Payment:
- Shipping:
Inventory:5,926
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Product details
Overview
BC847CW/MIX from Nexperia is a 45 V, 100 mA NPN general-purpose transistor in SOT323 (SC-70) package, optimized for low-power switching and linear amplification at IC ≤ 100 mA and VCE ≤ 45 V. It delivers hFE = 420–800 at VCE = 5 V, IC = 2 mA, with VCEsat ≤ 400 mV at IC = 100 mA/IB = 5 mA, and supports operation from –65 °C to +150 °C ambient.
For engineers reviewing the BC847CW/MIX datasheet, BC847CW/MIX pinout, BC847CW/MIX application, or BC847CW/MIX equivalent, this device is selected for precision biasing in sensor front-ends, low-current load switching in portable instrumentation, and signal amplification in battery-powered audio stages where gain consistency and thermal stability across temperature are critical.
Technical Context
The BC847CW/MIX operates as a discrete NPN bipolar junction transistor with fixed emitter-base and collector-base junctions, requiring external base current control to regulate collector current flow. Its DC current gain (hFE) is binned to 420–800 at 2 mA collector current, distinguishing it from lower-gain variants (e.g., BC847BW: 200–450) in the same family.
Thermal performance is defined by Rth(j-a) = 625 K/W on FR4 PCB with single-sided copper, limiting continuous power dissipation to 200 mW at Tamb ≤ 25 °C. Absolute maximum ratings include VCBO = 50 V, VCEO = 45 V, VEBO = 6 V, and peak pulse currents up to 200 mA (tp ≤ 1 ms).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 45 V - Maximum safe collector-emitter voltage with base open; defines high-side switch headroom in 3.3 V/5 V logic-level circuits. |
| IC | 100 mA - Continuous DC collector current rating; sets upper bound for relay drivers, LED biasing, and small-signal amplifier loads. |
| hFE | 420–800 @ VCE = 5 V, IC = 2 mA - High, tightly binned DC current gain enabling stable bias networks with minimal base drive variation. |
| VCEsat | ≤ 400 mV @ IC = 100 mA, IB = 5 mA - Low saturation voltage reduces conduction loss in switching applications, improving efficiency in battery-operated systems. |
| fT | 100 MHz @ VCE = 5 V, IC = 10 mA - Transition frequency supports small-signal amplification up to mid-VHF range, suitable for RF preamps and oscillator buffers. |
| Rth(j-a) | 625 K/W - Junction-to-ambient thermal resistance on standard FR4 PCB; determines required derating above 25 °C ambient for reliable 200 mW operation. |
Pinout & Package
SOT323 (SC-70) plastic surface-mounted package: 1.35 mm × 1.15 mm footprint, 0.4 mm nominal height, three terminals on 0.65 mm pitch; optimized for high-density PCB layouts and reflow soldering per IPC-J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | B (Base) | Current-controlled input node; requires series resistor to limit IB and ensure predictable hFE-driven IC scaling. |
| 2 | E (Emitter) | Reference terminal for bias network; connected to ground or negative rail in common-emitter configurations. |
| 3 | C (Collector) | Output current sink node; handles switched load current up to 100 mA with <400 mV drop in saturation. |
Key Features
| Feature | Design Value |
|---|---|
| High hFE binning | 420–800 at 2 mA ensures consistent gain across production lots, reducing need for post-manufacture trimming in analog front-ends. |
| Low VCEsat | ≤ 400 mV at full 100 mA load enables efficient switching in 3.3 V systems without additional level-shifting circuitry. |
| Wide temperature range | –65 °C to +150 °C operation supports deployment in industrial controls and automotive under-hood modules (non-automotive qualified). |
| SC-70 footprint | 0.65 mm pin pitch and 1.35 mm × 1.15 mm body allow placement in space-constrained IoT sensor nodes and wearable PCBs. |
Applications
| Portable Sensor Signal Conditioning | Low-Power LED Driver |
|---|---|
|
Use Scenario: Amplifying microvolt-level output from thermistor or photodiode sensors in battery-powered environmental monitors. IC Role / Device Role / Timing Role: NPN small-signal amplifier in common-emitter configuration with emitter degeneration for linearity and temperature compensation. Use Value: High hFE (420–800) enables >40 dB voltage gain with minimal base current draw, extending battery life beyond 12 months in sleep-active cycling. |
Use Scenario: Driving indicator LEDs in handheld medical devices where supply voltage varies from 3.0 V to 4.2 V (Li-ion). IC Role / Device Role / Timing Role: Low-side switch controlling LED anode current with precise on/off timing via MCU GPIO. Use Value: VCEsat ≤ 400 mV ensures ≥90% of supply voltage reaches LED at 20 mA, maintaining brightness consistency across battery discharge curve. |
| Audio Pre-amplifier Stage | Microcontroller I/O Level Translation |
|
Use Scenario: Boosting microphone output to line-level before ADC sampling in voice-enabled edge devices. IC Role / Device Role / Timing Role: Class-A common-emitter amplifier with fixed bias network and capacitive coupling. Use Value: fT = 100 MHz and NF = 2–10 dB at 1 kHz support clean 20 kHz bandwidth amplification with SNR > 75 dB in 3.3 V systems. |
Use Scenario: Interfacing 1.8 V logic outputs to 5 V peripherals in mixed-voltage embedded systems. IC Role / Device Role / Timing Role: NPN level shifter with base driven by low-voltage GPIO and collector pulled to 5 V rail. Use Value: Tight hFE binning ensures predictable switching thresholds and <100 ns propagation delay, eliminating timing skew in synchronous buses. |
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 |
|---|---|---|---|
| BC847BWM,315 | hFE = 200–450 @ VCE = 5 V, IC = 2 mA; otherwise identical package, pinout, and voltage/current ratings. | Lower gain reduces base drive sensitivity but increases tolerance to hFE variation in production batches. | Select when designing for worst-case gain margin in high-volume consumer electronics with wide temperature operating ranges. |
| MMBT3904LT1G | Same SOT-23 package (not SOT323); hFE = 100–300 @ IC = 10 mA; VCEO = 40 V; higher Rth(j-a) = 740 K/W. | Larger footprint and lower gain require PCB redesign and increased base drive; less suitable for ultra-compact layouts. | Choose only if SOT-23 compatibility is mandatory and thermal derating to 150 mW at 25 °C is acceptable. |
Compared with BC847BWM,315 and MMBT3904LT1G, the BC847CW/MIX provides superior gain consistency and smaller footprint for space-constrained, low-current amplification-making it optimal for precision analog signal paths where gain predictability and board area are primary constraints.
Availability
BC847CW/MIX is available at Aetrix Electronics and suitable for portable sensor signal conditioning, low-power LED driver circuits, audio pre-amplifier stages, and microcontroller I/O level translation requiring stable component supply and tight parametric consistency.
Supply support for BC847CW/MIX 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 delivering high-performance, reliable discrete, logic, and MOSFET devices with focus on efficiency, miniaturization, and robustness for mass-market electronics.
The BC847xW series targets cost-sensitive, high-volume applications demanding proven reliability in SOT323 packaging-designed specifically for general-purpose switching and amplification in consumer, industrial, and computing equipment.
FAQ
What is the maximum continuous collector current for BC847CW/MIX?
The absolute maximum continuous collector current (IC) is 100 mA at Tamb ≤ 25 °C with derating above that ambient temperature. At 100 mA and IB = 5 mA, VCEsat remains ≤ 400 mV, confirming stable operation within its specified linear and saturation regions.
Is BC847CW/MIX suitable for automotive applications?
No-BC847CW/MIX is explicitly non-automotive qualified per Nexperia's revision history (Rev. 13, July 2022), which states product qualification was changed to non-automotive. For automotive use, Nexperia offers Q-grade alternatives such as BC847CWH-Q.
How does the SOT323 package affect thermal performance?
The SOT323 package yields Rth(j-a) = 625 K/W on standard FR4 PCB with single-sided copper, limiting Ptot to 200 mW at 25 °C ambient. This requires thermal derating to ~120 mW at 85 °C ambient, making it unsuitable for sustained high-power dissipation without heatsinking or airflow.
What is the typical noise figure for BC847CW/MIX in small-signal amplification?
The noise figure is 2–10 dB at IC = 200 μA, VCE = 5 V, RS = 2 kΩ, f = 1 kHz, and B = 200 Hz. This low-noise performance supports high-fidelity sensor signal amplification in battery-powered instrumentation where signal integrity is critical.
BC847CW/MIX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
BC847CW/MIX FAQ
1.How can I place an order for BC847CW/MIX through Aetrix?
Please submit a Request for Quotation (RFQ) for BC847CW/MIX 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/MIX reliable?
The price and inventory of BC847CW/MIX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC847CW/MIX is usually 5 days.
3.What payment methods are accepted for BC847CW/MIX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC847CW/MIX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC847CW/MIX?
BC847CW/MIX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC847CW/MIX 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/MIX?
For technical support, including BC847CW/MIX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC847CW/MIX requirements.
6.How does Aetrix verify that BC847CW/MIX is sourced from the original manufacturer or authorized distributors?
All BC847CW/MIX 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/MIX meets industry standards.
7.What is the process for return or replacement of BC847CW/MIX?
All BC847CW/MIX units undergo pre-shipment inspection (PSI). If there is an issue with BC847CW/MIX, 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/MIX part is unused and in its original packaging.
Return procedure for BC847CW/MIX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC847CW/MIX Tags
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MMBT3906LT1G
onsemi
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MMBT3904-7-F
Diodes Incorporated
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MMBT3904LT1G
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MMBT3906-7-F
Diodes Incorporated
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MMBT3904-TP
Micro Commercial Co
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MMBT2222A-7-F
Diodes Incorporated
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BC846BLT1G
onsemi
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BC847B,215
Nexperia USA Inc.
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SMMBT3904LT1G
onsemi
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MMBT2222A-TP
Micro Commercial Co
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MMBTA06LT1G
onsemi
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MMBT2222ALT1G
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