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Nexperia USA Inc. BC846W,115
- Part No.:
- BC846W,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
BC846W,115.pdf
- Description:
- TRANS NPN 65V 0.1A SOT-323
- Quantity:
- Payment:
- Shipping:
Inventory:11,235
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Product details
Overview
BC846W,115 from Nexperia is an NPN general-purpose bipolar junction transistor (BJT) in SOT323 (SC-70) package, rated for 65 V VCEO, 100 mA IC, and DC current gain (hFE) spanning 110–450 at VCE = 5 V, IC = 2 mA. It serves as a compact, low-power switching and amplification device in space-constrained consumer and industrial PCBs.
For engineers reviewing the BC846W,115 datasheet, BC846W,115 pinout, BC846W,115 application, or BC846W,115 equivalent, key selection criteria include its SOT323 footprint compatibility, guaranteed hFE range, VCEO/VCBO voltage ratings, thermal resistance (625 K/W), and saturation voltage performance under 100 mA load.
Technical Context
The BC846W,115 operates as a standard NPN BJT with base-controlled current amplification. Its design targets linear amplification and digital on/off switching in low-voltage, low-current signal paths - not power switching or RF applications. The device exhibits temperature-dependent VBE (−2 mV/K) and VBEsat (−1.7 mV/K), requiring thermal-aware biasing in precision analog stages.
It features a maximum junction temperature of 150 °C and absolute maximum ratings aligned with IEC 60134: 65 V VCEO, 80 V VCBO, 6 V VEBO, and 200 mW Ptot at Tamb ≤ 25 °C on FR4 PCB. Transient thermal impedance data supports pulsed operation up to 200 mA peak collector current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 65 V - Maximum safe collector-emitter voltage with base open; defines upper rail limit in switching circuits. |
| IC | 100 mA continuous - Max DC collector current; sets usable load drive capability in logic-level interfaces. |
| hFE | 110–450 @ VCE=5 V, IC=2 mA - Gain spread impacts base drive sizing and circuit stability across production lots. |
| VCEsat | 200–400 mV @ IC=100 mA, IB=5 mA - Low saturation voltage minimizes conduction loss in saturated-switch applications. |
| Rth(j-a) | 625 K/W - Thermal resistance from junction to ambient on standard FR4; dictates derating above 25 °C ambient. |
| fT | 100 MHz - Transition frequency limits usable bandwidth in small-signal amplification below ~10 MHz. |
| Cc | 2–3 pF @ VCB=10 V - Collector capacitance affects high-frequency response and Miller effect in amplifier stages. |
Pinout & Package
SOT323 (SC-70) plastic surface-mount package: 1.3 mm × 1.8 mm × 0.95 mm body, 0.65 mm lead pitch, tin-plated terminations, optimized for reflow soldering per IPC-J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base (B) | Current-controlled input node; requires series resistor to limit IB and ensure reliable turn-on/turn-off. |
| 2 | Emitter (E) | Common reference terminal; connects to ground or low-side return path in common-emitter configurations. |
| 3 | Collector (C) | Output current sink node; ties to load (e.g., LED, relay coil, logic input) between supply rail and collector. |
Key Features
| Feature | Design Value |
|---|---|
| General-purpose NPN BJT | Enables both linear amplification (e.g., sensor signal conditioning) and digital switching (e.g., GPIO-driven loads) without specialized biasing. |
| SOT323 (SC-70) footprint | Reduces board area by >50% vs. SOT23; compatible with high-density routing and automated placement on fine-pitch PCBs. |
| Two gain selections (W/AW/BW) | BC846W offers widest hFE range (110–450); allows cost-optimized binning without redesigning layout or drive circuitry. |
| Low VCEsat at 100 mA | Ensures <100 mW power dissipation in saturation, supporting thermally constrained designs without heatsinking. |
Applications
| LED Driver Circuit | Microcontroller GPIO Interface |
|---|---|
|
Use Scenario: Driving discrete indicator LEDs from 3.3 V or 5 V microcontroller outputs. IC Role / Device Role / Timing Role: NPN switch sinking current from LED anode to ground; base driven directly by MCU GPIO. Use Value: VCEsat ≤ 400 mV ensures >90% LED forward voltage utilization; hFE ≥ 110 guarantees full saturation with ≤100 µA base drive. |
Use Scenario: Level-shifting or buffering weak MCU output signals to higher-current peripherals. IC Role / Device Role / Timing Role: Common-emitter amplifier providing current gain and voltage inversion for signal conditioning. Use Value: fT = 100 MHz supports clean amplification of pulse-width modulated (PWM) signals up to 5 MHz without phase distortion. |
| Low-Voltage Sensor Signal Amplifier | Power Supply Enable Switch |
|
Use Scenario: Amplifying low-amplitude analog outputs from temperature or light sensors before ADC sampling. IC Role / Device Role / Timing Role: Common-emitter small-signal amplifier with emitter degeneration for stable DC bias and AC gain. Use Value: Cc = 2–3 pF minimizes Miller multiplication, preserving bandwidth in 10–100 kHz sensor bandwidths. |
Use Scenario: Enabling/disabling auxiliary power rails (e.g., 3.3 V LDO output) via microcontroller control. IC Role / Device Role / Timing Role: High-side or low-side enable switch controlling power path to downstream ICs or modules. Use Value: 65 V VCEO margin accommodates transient spikes on 24 V auxiliary rails; 150 °C Tj rating supports industrial ambient conditions. |
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 |
|---|---|---|---|
| BC847W,115 | VCEO = 45 V (vs. 65 V); hFE = 120–475; identical SOT323 package and pinout. | Lower voltage rating restricts use in 48 V or automotive 24 V systems with transients. | Select when operating below 40 V and tighter hFE tolerance is needed. |
| MMBT3904LT1G | VCEO = 40 V; hFE = 100–300; SOT23 package (larger footprint, different pinout). | Requires PCB layout change; lower VCEO and narrower hFE reduce design margin in noisy environments. | Choose only if legacy SOT23 footprint must be retained and voltage stress remains <35 V. |
Compared with BC847W,115 and MMBT3904LT1G, the BC846W,115 provides superior voltage headroom (65 V) and broader hFE range for robust base-drive margin - critical in unregulated or transient-prone supply domains.
Availability
BC846W,115 is available at Aetrix Electronics and suitable for LED driver circuits, microcontroller GPIO interfaces, low-voltage sensor signal amplifiers, and power supply enable switches requiring stable component supply and consistent SOT323 packaging.
Supply support for BC846W,115 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 - including logic, discretes, MOSFETs, and ESD protection devices - serving automotive, industrial, and consumer markets.
The BC846W,115 belongs to Nexperia's BC846xW general-purpose transistor family, engineered for cost-sensitive, space-constrained applications demanding proven reliability and wide parametric consistency across temperature and voltage ranges.
FAQ
Is BC846W,115 suitable for automotive applications?
No. BC846W,115 is not AEC-Q101 qualified and lacks automotive-grade screening, temperature cycling validation, or failure-in-time (FIT) data. Nexperia explicitly states non-automotive qualification in its legal disclaimers. Use only in commercial or industrial environments where ambient temperature stays within −65 °C to +150 °C and no safety-critical function is assigned.
What is the maximum allowable base current for continuous operation?
The absolute maximum peak base current is 200 mA (single pulse, tp ≤ 1 ms), but continuous operation must respect the total power dissipation limit of 200 mW at Tamb = 25 °C. With VBEsat ≈ 900 mV at IC = 100 mA, sustained IB > 200 µA risks exceeding Ptot unless ambient temperature is reduced or PCB copper area increased.
How does hFE variation affect circuit design?
BC846W,115's hFE spans 110–450, meaning base drive must be sized for worst-case minimum gain (110) to guarantee saturation, while ensuring base current remains within safe limits at maximum gain (450). This typically requires a base resistor that delivers ≥910 µA at 3.3 V to achieve IC/IB ≤ 110 under all conditions.
Can BC846W,115 replace BC846BW in existing designs?
Yes, electrically - BC846W,115 and BC846BW share identical package, pinout, and voltage/current ratings. However, BC846BW has a tighter hFE range (200–450), whereas BC846W,115's wider 110–450 range may require verifying base drive sufficiency in margin-critical saturation applications, especially at low temperatures where hFE decreases.
BC846W,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BC846xW
- 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):
- 65 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
BC846W,115 FAQ
1.How can I place an order for BC846W,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BC846W,115 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 BC846W,115 reliable?
The price and inventory of BC846W,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC846W,115 is usually 5 days.
3.What payment methods are accepted for BC846W,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC846W,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC846W,115?
BC846W,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC846W,115 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 BC846W,115?
For technical support, including BC846W,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC846W,115 requirements.
6.How does Aetrix verify that BC846W,115 is sourced from the original manufacturer or authorized distributors?
All BC846W,115 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 BC846W,115 meets industry standards.
7.What is the process for return or replacement of BC846W,115?
All BC846W,115 units undergo pre-shipment inspection (PSI). If there is an issue with BC846W,115, 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 BC846W,115 part is unused and in its original packaging.
Return procedure for BC846W,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC846W,115 Tags
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MMBT3906LT1G
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MMBT3904LT1G
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MMBT3906-7-F
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MMBT2222A-7-F
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BC847B,215
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MMBTA06LT1G
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