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NXP Semiconductors BC847BT,115
- Part No.:
- BC847BT,115
- Manufacturer:
- NXP Semiconductors
- Category:
- Single Bipolar Transistors
- Package:
- SC-75, SOT-416
- Datasheet:
-
BC847BT,115.pdf
- Description:
- TRANS NPN 45V 0.1A SC-75
- Quantity:
- Payment:
- Shipping:
Inventory:3,680
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Product details
Overview
BC847BT,115 from Nexperia is an NPN general-purpose bipolar junction transistor in SOT416 (SC-75) surface-mount package, rated for 45 V VCEO, 100 mA IC, and DC current gain (hFE) of 200–450 (Group B). It serves as a compact switching or linear amplification device in space-constrained consumer and industrial PCBs, including LED driver bias networks and signal-level interface stages.
For engineers reviewing the BC847BT,115 datasheet, BC847BT,115 pinout, BC847BT,115 application, or BC847BT,115 equivalent, this page delivers verified electrical specs, thermal limits, AEC-Q101 qualification status, SOT416 footprint details, and validated alternative transistors for automotive-grade signal conditioning and low-power switching designs.
Technical Context
The BC847BT,115 operates as a discrete NPN BJT with fixed gain grouping (B), enabling predictable base drive requirements in saturated switching and active-region amplification. Its 45 V collector-emitter breakdown and 6 V emitter-base rating support operation across 3.3 V to 24 V logic-compatible rails.
Thermal performance is defined for FR4 PCB mounting: Rth(j-a) = 833 K/W (free air), Ptot = 150 mW at Tamb ≤ 25 °C, and Tj max = 150 °C - confirming suitability for thermally unmanaged consumer modules and ambient-stable industrial controls.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 45 V - Maximum safe collector-emitter voltage before avalanche; supports 24 V rail switching with 2× margin. |
| IC | 100 mA continuous - Sufficient for driving small relays, LEDs, or logic-level MOSFET gates without external heat sinking. |
| hFE (Group B) | 200–450 at VCE = 5 V, IC = 2 mA - Enables stable base resistor design for consistent saturation in digital switch applications. |
| VCE(sat) | 90–400 mV - Low on-state voltage drop minimizes power loss in high-duty-cycle switching (e.g., PWM dimming). |
| Ptot | 150 mW - Power dissipation limit at 25 °C ambient; requires derating above 25 °C per Rth(j-a) = 833 K/W. |
| fT | 100 MHz - Transition frequency confirms usability up to audio and low-speed digital signal amplification (e.g., sensor buffering). |
| AEC-Q101 | Qualified - Validated for automotive electronics per stress-test standard; suitable for under-hood and infotainment subsystems. |
Pinout & Package
SOT416 (SC-75) plastic surface-mounted package; 3 leads; body dimensions 1.75 × 1.45 × 0.9 mm; lead pitch 0.95 mm; ultra-small footprint for high-density layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base | Current-controlled input node; requires series resistor to limit IB and ensure saturation at target IC. |
| 2 | Emiter | Reference terminal for bias network; connected to ground or low-side return path in common-emitter configuration. |
| 3 | Collector | Output current sink node; interfaces with load (e.g., LED anode, relay coil) tied to positive supply rail. |
Key Features
| Feature | Design Value |
|---|---|
| NPN general-purpose transistor | Standard silicon BJT architecture optimized for cost-sensitive, medium-frequency switching and amplification. |
| SOT416 (SC-75) package | 0.95 mm lead pitch and 1.75 mm length enable placement in <1.5 mm pitch routing zones - critical for wearables and IoT sensors. |
| hFE Group B selection | Narrower gain spread (200–450) vs. Group A/C improves batch consistency in production calibration and reduces base resistor tolerance sensitivity. |
| AEC-Q101 qualification | Validated reliability for automotive ambient conditions (−40 °C to +125 °C operating, 150 °C junction), including HTRB, HTSL, and temperature cycling. |
Applications
| Automotive Interior Lighting Control | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Driving white LED strings in dashboard backlighting with PWM dimming at 1–10 kHz. IC Role / Device Role / Timing Role: Low-side switch controlling LED cathode current; operates in saturation with <200 mV VCE(sat) at 50 mA IC. Use Value: Minimal conduction loss (<10 mW at 50 mA) extends thermal margin in sealed enclosures and reduces need for copper pour. |
Use Scenario: Amplifying millivolt-level output from thermistor or bridge-based pressure sensors before ADC sampling. IC Role / Device Role / Timing Role: Common-emitter amplifier with fixed-gain bias network; provides 20–50× voltage gain at DC–100 kHz. Use Value: 100 MHz fT ensures flat gain response across sensor bandwidth; low noise figure (2–10 dB) preserves SNR in precision measurement paths. |
| Consumer Wearable Power Management | Home Appliance Motor Interface |
Use Scenario: Enabling/disabling 3.3 V LDO regulators or RF modules in smart bands using GPIO-controlled switching. IC Role / Device Role / Timing Role: Digital switch translating 3.3 V logic to 100 mA load control; driven with 5–10 kΩ base resistor. Use Value: SOT416 footprint fits within 2.0 × 1.5 mm board area; AEC-Q101 qualification assures long-term reliability in repeated flex-cycle environments. |
Use Scenario: Driving small brushed DC motors (e.g., fan actuators, valve solenoids) in washing machines and HVAC controls. IC Role / Device Role / Timing Role: Medium-current switch handling 80 mA inductive loads with flyback diode protection. Use Value: 45 V VCEO withstands 30 V inductive kickback; 200–450 hFE allows robust base drive design even with aging microcontroller outputs. |
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,115 | SOT323 (SC-70) package; larger 2.2 × 1.35 mm footprint; Rth(j-a) = 625 K/W; Ptot = 200 mW. | Better thermal dissipation but occupies ~2.5× more board area than BC847BT,115. | Select when higher power handling (>150 mW) is required and layout space permits larger SOT323. |
| BC847B,115 | SOT23 package; 3.0 × 1.4 mm body; Rth(j-a) = 500 K/W; Ptot = 250 mW; same hFE group B. | Higher power rating and easier hand-soldering, but incompatible pin layout and larger size. | Choose for prototyping or legacy designs where SOT23 compatibility is mandatory and thermal headroom is critical. |
Compared with BC847BW,115 and BC847B,115, the BC847BT,115 trades thermal margin and ease of assembly for minimal footprint - making it optimal for ultra-compact, high-volume consumer and automotive modules where board space is constrained and power dissipation remains below 150 mW.
Availability
BC847BT,115 is available at Aetrix Electronics and suitable for automotive interior lighting control, industrial sensor signal conditioning, consumer wearable power management, and home appliance motor interface requiring stable component supply and AEC-Q101-compliant reliability.
Supply support for BC847BT,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 leader in discrete, logic, and PowerMOS semiconductors, spun off from NXP in 2017 and focused on automotive, industrial, computing, and consumer markets.
The BC847BT,115 belongs to Nexperia's BC847 series of general-purpose NPN transistors - engineered for high-volume, cost-sensitive applications demanding consistent gain grouping, AEC-Q101 qualification, and ultra-small SMD packaging.
FAQ
What is the maximum collector-emitter voltage rating for BC847BT,115?
The BC847BT,115 has a maximum collector-emitter voltage (VCEO) rating of 45 V under open-base conditions. This rating is absolute - operation beyond 45 V risks avalanche breakdown and permanent damage. For 24 V systems, this provides a 1.88× safety margin, supporting reliable use in automotive and industrial power rails.
Is BC847BT,115 qualified for automotive applications?
Yes, BC847BT,115 is AEC-Q101 qualified by Nexperia, meaning it has passed stress tests for high-temperature reverse bias, high-temperature storage life, temperature cycling, and other automotive-specific reliability requirements. This makes BC847BT,115 suitable for under-hood and cabin electronics where extended temperature operation and long-term stability are mandatory.
What package type does BC847BT,115 use, and how does it compare to BC847B,115?
BC847BT,115 uses the SOT416 (SC-75) package - measuring 1.75 × 1.45 × 0.9 mm - while BC847B,115 uses the larger SOT23 package (3.0 × 1.4 mm). The SOT416 offers superior board-space efficiency but lower power dissipation (150 mW vs. 250 mW) and higher thermal resistance (833 K/W vs. 500 K/W). Pinout is identical (1=base, 2=emitter, 3=collector), but footprints are not interchangeable.
What is the DC current gain (hFE) range for BC847BT,115, and how is it tested?
The BC847BT,115 is specified as Group B, with hFE ranging from 200 to 450 when measured at VCE = 5 V and IC = 2 mA. This gain binning ensures tighter distribution than Group A (110–220) or Group C (420–800), simplifying base resistor selection for consistent saturation in production designs using BC847BT,115.
Can BC847BT,115 be used in linear amplification applications?
Yes, BC847BT,115 supports linear amplification with a transition frequency (fT) of 100 MHz and low noise figure (2–10 dB at 1 kHz), making it suitable for low-noise preamplifiers and sensor signal conditioning up to ~100 kHz. However, its 150 mW power limit and SOT416 thermal resistance require careful biasing to avoid thermal runaway - use only with stable emitter degeneration and adequate PCB copper for heat spreading.
BC847BT,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- SC-75, SOT-416
- 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:
- 200 @ 2mA, 5V
- Power - Max:
- 150 mW
- Frequency - Transition:
- 100MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-75
BC847BT,115 FAQ
1.How can I place an order for BC847BT,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BC847BT,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 BC847BT,115 reliable?
The price and inventory of BC847BT,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC847BT,115 is usually 5 days.
3.What payment methods are accepted for BC847BT,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC847BT,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC847BT,115?
BC847BT,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC847BT,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 BC847BT,115?
For technical support, including BC847BT,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC847BT,115 requirements.
6.How does Aetrix verify that BC847BT,115 is sourced from the original manufacturer or authorized distributors?
All BC847BT,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 BC847BT,115 meets industry standards.
7.What is the process for return or replacement of BC847BT,115?
All BC847BT,115 units undergo pre-shipment inspection (PSI). If there is an issue with BC847BT,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 BC847BT,115 part is unused and in its original packaging.
Return procedure for BC847BT,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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