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Nexperia USA Inc. BC847CW/ZLF
- Part No.:
- BC847CW/ZLF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
BC847CW/ZLF.pdf
- Description:
- TRANS SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:5,692
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Product details
Overview
BC847CW/ZLF from Nexperia is a 45 V, 100 mA NPN general-purpose transistor in SOT323 (SC-70) package, optimized for low-power switching and small-signal amplification with hFE = 420–800 at VCE = 5 V, IC = 2 mA. It delivers stable DC current gain across −55 °C to +150 °C and supports IC/IB = 20 saturation operation up to 100 mA.
For engineers reviewing the BC847CW/ZLF datasheet, BC847CW/ZLF pinout, BC847CW/ZLF application, or BC847CW/ZLF equivalent, key selection criteria include its high-gain bin (420–800), 200 mW power dissipation on FR4 PCB, 625 K/W junction-to-ambient thermal resistance, and SC-70 footprint compatibility with space-constrained consumer and industrial PCB layouts.
Technical Context
This NPN bipolar junction transistor operates in active, saturation, and cutoff regions with verified VCEO = 45 V and VCB0 = 50 V absolute maximum ratings. Its base-emitter voltage ranges from 580 mV to 700 mV at VCE = 5 V, IC = 2 mA, and exhibits predictable thermal drift of −2 mV/K.
The device achieves VCE(sat) ≤ 400 mV at IC = 100 mA, IB = 5 mA (pulsed), and maintains fT ≥ 100 MHz at VCE = 5 V, IC = 10 mA, enabling reliable use in audio preamplifiers and digital logic interface circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 45 V - Maximum collector-emitter voltage before breakdown; defines safe operating voltage headroom in 3.3 V/5 V rail applications. |
| IC | 100 mA - Continuous collector current rating; supports load switching up to ~100 mA with adequate heatsinking on FR4. |
| hFE | 420–800 @ VCE = 5 V, IC = 2 mA - High DC current gain bin enables low-base-drive designs in sensor interfaces and LED drivers. |
| VCE(sat) | ≤ 400 mV @ IC = 100 mA, IB = 5 mA - Low saturation voltage minimizes power loss and self-heating in switching applications. |
| Ptot | 200 mW @ Tamb ≤ 25 °C - Total power dissipation limit on standard FR4 PCB; derates linearly above 25 °C ambient. |
| Rth(j-a) | 625 K/W - Junction-to-ambient thermal resistance; determines temperature rise under steady-state bias (e.g., +62.5 °C rise at 100 mW). |
| fT | ≥ 100 MHz - Transition frequency confirms suitability for audio-frequency amplification and fast digital signal conditioning. |
Pinout & Package
SOT323 (SC-70) plastic surface-mounted package with 3 leads; dimensions: 2.2 mm × 1.35 mm × 0.95 mm (L × W × H); standard footprint per Fig. 15 (reflow soldering).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base (B) | Control terminal; requires ~5 mA base drive for full 100 mA collector conduction at IC/IB = 20. |
| 2 | Emitter (E) | Current return path; internally connected to substrate; must be tied to lowest potential in common-emitter configuration. |
| 3 | Collector (C) | Output current path; handles up to 100 mA continuous; electrically isolated from package tab (no thermal pad). |
Key Features
| Feature | Design Value |
|---|---|
| High-current-gain bin | hFE = 420–800 ensures robust amplification with minimal base drive in low-power sensor front-ends. |
| Thermally stable VBE | VBE = 580–700 mV at 2 mA with −2 mV/K drift enables predictable biasing over industrial temperature range. |
| Low VCE(sat) | ≤ 400 mV at 100 mA reduces conduction loss by >60% vs. standard BC847W (≤ 700 mV), improving efficiency in battery-powered switches. |
| Small-outline SMT package | SOT323 footprint saves >50% board area vs. SOT23, supporting miniaturized wearables and IoT node designs. |
| Robust ESD tolerance | HBM rating ≥ 2 kV (per Nexperia internal qualification) allows handling without special ESD controls in assembly lines. |
Applications
| LED Driver Circuit | Microcontroller GPIO Interface |
|---|---|
|
Use Scenario: Driving 20 mA indicator LEDs from 3.3 V microcontroller outputs. IC Role / Device Role / Timing Role: NPN switch providing current amplification and level translation between MCU I/O and LED anode. Use Value: Enables direct drive without external resistors on MCU side; VCE(sat) ≤ 200 mV at 20 mA ensures >95% LED forward voltage utilization. |
Use Scenario: Isolating and translating 3.3 V logic signals to 5 V peripherals in mixed-voltage systems. IC Role / Device Role / Timing Role: Active-low level shifter using common-emitter configuration with pull-up on collector. Use Value: Supports >10 MHz toggle rates due to fT ≥ 100 MHz; hFE > 420 ensures clean logic transitions even with weak MCU drive. |
| Audio Preamplifier Stage | Temperature Sensor Signal Conditioning |
|
Use Scenario: Low-noise amplification of electret microphone output in portable audio devices. IC Role / Device Role / Timing Role: Common-emitter small-signal amplifier with emitter degeneration resistor. Use Value: NF = 2–10 dB at 1 kHz enables SNR > 60 dB; hFE stability over −20 °C to +70 °C maintains gain consistency. |
Use Scenario: Converting PT1000 or NTC thermistor resistance changes into amplified voltage for ADC input. IC Role / Device Role / Timing Role: Constant-current source configured via base bias network to excite sensing element. Use Value: VBE thermal coefficient (−2 mV/K) provides built-in temperature compensation when used in current-source reference paths. |
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 |
|---|---|---|---|
| BC847CMTF | Same hFE bin (420–800) but in SOT-23 package; Rth(j-a) = 450 K/W; higher Ptot = 350 mW. | Preferred where higher power handling or legacy SOT-23 layout reuse is required; larger footprint than SOT323. | Select when thermal margin >100 mW is needed or existing SOT-23 footprints constrain redesign. |
| MMBT3904LT1G | hFE = 100–300 (lower gain bin); VCEO = 40 V; fT = 300 MHz; same SOT-23 package. | Better for RF-coupled switching or higher-speed digital buffering; less suitable for low-base-drive analog amplification. | Choose for >10 MHz digital signal routing where gain uniformity is secondary to speed and availability. |
Compared with BC847CW/ZLF, BC847CMTF offers superior thermal performance in larger SOT-23 but sacrifices board area; MMBT3904LT1G trades gain for bandwidth and is optimal for high-speed logic rather than precision analog gain stages.
Availability
BC847CW/ZLF is available at Aetrix Electronics and suitable for LED driver circuits, microcontroller GPIO interfacing, audio preamplifiers, and temperature sensor signal conditioning requiring stable component supply and consistent high-gain binning.
Supply support for BC847CW/ZLF 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 semiconductors for power management, logic, and analog applications, with manufacturing rooted in process technology leadership and automotive-grade reliability standards.
The BC847xW series targets cost-sensitive, space-constrained consumer and industrial applications requiring proven NPN switching and amplification performance in ultra-small SMT packages-designed specifically for high-volume, high-reliability board-level integration.
FAQ
Is BC847CW/ZLF automotive-qualified?
No. Per Nexperia's Rev. 13 data sheet (July 2022), BC847CW/ZLF is explicitly designated as non-automotive qualified. It lacks AEC-Q101 stress testing and is not warranted for safety-critical or engine-compartment applications. Automotive alternatives include BC847BQ variants with full qualification documentation.
What is the maximum continuous collector current at 85 °C ambient?
At Tamb = 85 °C, derating applies: Ptot drops linearly from 200 mW at 25 °C to 0 mW at 150 °C. At 85 °C, allowable power is 130 mW. With VCE(sat) ≈ 300 mV at IC = 100 mA, max continuous IC is ~430 mA × (130 mW / 30 mW) → limited to ~100 mA by absolute maximum rating, not thermal-so 100 mA remains valid if board layout maintains junction <150 °C.
Does BC847CW/ZLF have a built-in ESD protection diode?
No. The BC847CW/ZLF is a bare-die bipolar transistor without integrated ESD protection structures. Its HBM rating is ≥2 kV per Nexperia internal qualification, but external TVS or series resistance is recommended for I/O pins exposed to handling or connector interfaces.
Can BC847CW/ZLF replace BC847BW in existing designs?
Yes, with design verification. BC847CW has higher hFE (420–800 vs. 200–450), which may increase gain or reduce base drive requirements. Check saturation behavior at target IC; VCE(sat) is comparable (≤400 mV vs. ≤450 mV), but higher hFE could cause unintended latch-up in poorly decoupled feedback loops.
BC847CW/ZLF 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:
- -
- Current - Collector (Ic) (Max):
- -
- Voltage - Collector Emitter Breakdown (Max):
- -
- Vce Saturation (Max) @ Ib, Ic:
- -
- Current - Collector Cutoff (Max):
- -
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- -
- Power - Max:
- -
- Frequency - Transition:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
BC847CW/ZLF FAQ
1.How can I place an order for BC847CW/ZLF through Aetrix?
Please submit a Request for Quotation (RFQ) for BC847CW/ZLF 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/ZLF reliable?
The price and inventory of BC847CW/ZLF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC847CW/ZLF is usually 5 days.
3.What payment methods are accepted for BC847CW/ZLF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC847CW/ZLF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC847CW/ZLF?
BC847CW/ZLF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC847CW/ZLF 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/ZLF?
For technical support, including BC847CW/ZLF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC847CW/ZLF requirements.
6.How does Aetrix verify that BC847CW/ZLF is sourced from the original manufacturer or authorized distributors?
All BC847CW/ZLF 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/ZLF meets industry standards.
7.What is the process for return or replacement of BC847CW/ZLF?
All BC847CW/ZLF units undergo pre-shipment inspection (PSI). If there is an issue with BC847CW/ZLF, 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/ZLF part is unused and in its original packaging.
Return procedure for BC847CW/ZLF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC847CW/ZLF Tags
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Diodes Incorporated
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BC847B,215
Nexperia USA Inc.
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