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NXP Semiconductors BC846BT,115
- Part No.:
- BC846BT,115
- Manufacturer:
- NXP Semiconductors
- Category:
- Single Bipolar Transistors
- Package:
- SC-75, SOT-416
- Datasheet:
-
BC846BT,115.pdf
- Description:
- TRANS NPN 65V 0.1A SC-75
- Quantity:
- Payment:
- Shipping:
Inventory:6,686
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Product details
Overview
BC846BT,115 from Nexperia is an NPN general-purpose bipolar junction transistor (BJT) in SOT416 (SC-75) surface-mount package, rated for 65 V VCEO, 100 mA IC, and hFE group B (200–450 at IC = 2 mA). It serves as a low-power switching and linear amplification device in compact consumer and industrial signal-path circuits.
For engineers reviewing the BC846BT,115 datasheet, BC846BT,115 pinout, BC846BT,115 application, or BC846BT,115 equivalent, this page delivers verified electrical parameters, thermal limits, package dimensions, and real-world use context - all aligned to the official Nexperia BC846_SER v.9 product data sheet.
Technical Context
The BC846BT,115 operates as a discrete NPN BJT with fixed gain grouping (hFE = 200–450), optimized for low-voltage, low-current switching and small-signal amplification. Its base-emitter saturation voltage is 760–900 mV at IC = 10–100 mA, and collector-emitter saturation voltage remains ≤400 mV under comparable drive conditions.
Thermal performance is defined for FR4 PCB mounting: Rth(j-a) = 833 K/W (SOT416), Ptot = 150 mW at Tamb ≤ 25 °C, and maximum junction temperature is 150 °C. It exhibits fT = 100 MHz and low capacitance (Cc = 2–3 pF, Ce = 11 pF), supporting stable operation up to mid-VHF frequencies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 65 V - Maximum collector-emitter voltage before breakdown; enables use in 24 V and 48 V rail switching applications. |
| IC | 100 mA - Continuous collector current rating; supports logic-level load switching and pre-driver stages. |
| hFE (Group B) | 200–450 at VCE = 5 V, IC = 2 mA - Tight DC gain binning ensures predictable biasing in amplifier and switch designs. |
| VCE(sat) | ≤400 mV at IC = 100 mA, IB = 5 mA - Low saturation voltage minimizes power loss and heating in saturated-switch operation. |
| fT | 100 MHz - Transition frequency confirms suitability for audio-frequency amplification and digital signal conditioning up to ~10 MHz. |
| Rth(j-a) | 833 K/W - Thermal resistance value defines worst-case junction temperature rise on standard FR4 layout; requires derating above 25 °C ambient. |
| Cc | 2–3 pF at VCB = 10 V - Collector-base capacitance impacts high-frequency stability and bandwidth in amplifier configurations. |
Pinout & Package
SOT416 (SC-75) is a 3-pin, ultra-small plastic surface-mount package measuring 1.75 × 0.9 mm with 0.95 mm height and 0.6 mm lead pitch. Its compact footprint supports high-density PCB layouts in space-constrained consumer electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base | Control terminal; accepts forward-biased current to enable conduction between collector and emitter. |
| 2 | Emiter | Current sink node; connected to circuit ground or low-side reference in common-emitter configuration. |
| 3 | Collector | Current source node; interfaces with load or next-stage input; handles up to 65 V and 100 mA continuous. |
Key Features
| Feature | Design Value |
|---|---|
| NPN bipolar transistor | Discrete active device with well-characterized current gain, saturation behavior, and thermal response - suitable for analog and digital signal control. |
| hFE Group B binning | Guaranteed 200–450 DC current gain at 2 mA collector current - reduces design margin uncertainty in bias networks. |
| SOT416 (SC-75) package | 0.6 mm lead pitch and 1.75 × 0.9 mm body - enables miniaturization in wearables, IoT sensors, and portable power management modules. |
| Low VCE(sat) | ≤200 mV at IC = 10 mA / IB = 0.5 mA - improves efficiency in battery-powered switching applications by reducing conduction loss. |
| fT = 100 MHz | Supports stable small-signal amplification up to audio band and fast edge handling in digital interface buffering. |
Applications
| LED Driver Circuit | Microcontroller GPIO Expander |
|---|---|
|
Use Scenario: Driving 20 mA indicator LEDs from 3.3 V microcontroller outputs with current limiting via base resistor. IC Role / Device Role / Timing Role: Low-side switch controlling LED anode-to-rail current path; operates in saturation mode with <1 µs turn-on/turn-off. Use Value: BC846BT,115's 100 mA IC rating and 400 mV VCE(sat) ensure minimal voltage drop and heat generation at full LED current. |
Use Scenario: Level-shifting and current boosting for legacy 5 V peripherals interfaced to 3.3 V MCU I/O pins. IC Role / Device Role / Timing Role: Common-emitter buffer providing inverted logic-level translation and 10× current gain to drive higher-capacitance loads. Use Value: With hFE ≥200, BC846BT,115 delivers reliable drive strength while maintaining <100 ns propagation delay in switching mode. |
| Audio Signal Pre-amplifier | Power Supply Enable Switch |
|
Use Scenario: Single-stage low-noise voltage amplifier for electret microphone output (200–5000 Hz band). IC Role / Device Role / Timing Role: Common-emitter small-signal amplifier with emitter degeneration; configured for 20–50 V/V gain and <10 dB noise figure. Use Value: BC846BT,115's NF = 2–10 dB at 1 kHz and fT = 100 MHz support clean audio signal integrity without high-frequency roll-off. |
Use Scenario: Enabling/disabling 12 V auxiliary rails in embedded systems using MCU-controlled base drive. IC Role / Device Role / Timing Role: High-side or low-side power switch managing enable sequencing and fault isolation in multi-rail supplies. Use Value: VCEO = 65 V and IC = 100 mA allow safe operation across 12 V, 24 V, and 48 V domains with margin for transient spikes. |
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 |
|---|---|---|---|
| BC847BT,115 | VCEO = 45 V (vs. 65 V); otherwise identical SOT416 package, hFE Group B, and pinout. | Limited to ≤36 V supply rails; unsuitable where 65 V headroom is required for surge tolerance or higher-voltage logic interfaces. | Select BC847BT,115 only when system voltage stays below 36 V and cost optimization is prioritized over voltage margin. |
| MMBT3904LT1G | Same SOT-23 package (not SOT416); VCEO = 40 V; hFE = 100–300; Ptot = 225 mW (vs. 150 mW). | Larger footprint and different thermal profile; requires PCB redesign; higher power dissipation but lower voltage rating. | Choose MMBT3904LT1G only if board layout allows SOT-23 and system voltage is ≤30 V - not a drop-in replacement for BC846BT,115. |
Compared with BC846BT,115, BC847BT,115 trades 20 V of collector-emitter voltage headroom for identical gain and package, while MMBT3904LT1G offers higher power handling in a larger SOT-23 body but sacrifices voltage rating and physical compatibility.
Availability
BC846BT,115 is available at Aetrix Electronics and suitable for LED driver circuits, microcontroller interface expansion, audio pre-amplification, and power supply enable switching requiring stable component supply and consistent hFE binning.
Supply support for BC846BT,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 leader specializing in high-volume discrete, logic, and PowerMOS devices, with core expertise in automotive, industrial, computing, and consumer markets.
The BC846 series belongs to Nexperia's general-purpose transistor portfolio, engineered for reliability, tight parameter distribution, and seamless integration into cost-sensitive, space-constrained PCB designs.
FAQ
What is the maximum collector-emitter voltage rating for BC846BT,115?
The BC846BT,115 has a maximum collector-emitter voltage (VCEO) rating of 65 V under open-base conditions. This rating is confirmed in Table 6 (Limiting Values) of the Nexperia BC846_SER v.9 datasheet and defines the absolute upper limit for safe DC or peak pulse operation without risk of avalanche breakdown.
Does BC846BT,115 have a specified transition frequency (fT)?
Yes, BC846BT,115 has a minimum transition frequency (fT) of 100 MHz, measured at VCE = 5 V, IC = 10 mA, and f = 100 MHz. This value is documented in Table 8 (Characteristics) and indicates its capability for small-signal amplification up to audio and low RF frequencies.
What is the thermal resistance from junction to ambient (Rth(j-a)) for BC846BT,115?
The thermal resistance from junction to ambient (Rth(j-a)) for BC846BT,115 is 833 K/W when mounted on a standard FR4 PCB with single-sided copper and tin plating. This value appears in Table 7 and governs temperature rise under steady-state power dissipation in typical layout conditions.
Is BC846BT,115 pin-compatible with other BC846 variants like BC846B or BC846W?
No - BC846BT,115 uses the SOT416 (SC-75) package, while BC846B is in SOT23 and BC846BW is in SOT323. Although all share identical pin 1–2–3 assignments (base–emitter–collector), their footprints, thermal characteristics, and power ratings differ significantly; PCB layout must be specific to SOT416 for BC846BT,115.
What does the 'BT' suffix indicate in BC846BT,115?
The 'BT' suffix in BC846BT,115 denotes the SOT416 (SC-75) package variant within the BC846 family. Per Table 1 and Table 4 of the datasheet, 'T' identifies SC-75, and 'B' specifies hFE Group B (200–450), making BC846BT,115 a binned, ultra-compact NPN transistor with guaranteed gain range and standardized tape-and-reel packaging (115 = 3000-unit reel).
BC846BT,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):
- 65 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
BC846BT,115 FAQ
1.How can I place an order for BC846BT,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BC846BT,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 BC846BT,115 reliable?
The price and inventory of BC846BT,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC846BT,115 is usually 5 days.
3.What payment methods are accepted for BC846BT,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC846BT,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC846BT,115?
BC846BT,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC846BT,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 BC846BT,115?
For technical support, including BC846BT,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC846BT,115 requirements.
6.How does Aetrix verify that BC846BT,115 is sourced from the original manufacturer or authorized distributors?
All BC846BT,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 BC846BT,115 meets industry standards.
7.What is the process for return or replacement of BC846BT,115?
All BC846BT,115 units undergo pre-shipment inspection (PSI). If there is an issue with BC846BT,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 BC846BT,115 part is unused and in its original packaging.
Return procedure for BC846BT,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC846BT,115 Tags
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MMBT3906LT1G
onsemi
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MMBT3904-7-F
Diodes Incorporated
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MMBT3904LT1G
onsemi
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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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