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NXP Semiconductors BC846AT,115
- Part No.:
- BC846AT,115
- Manufacturer:
- NXP Semiconductors
- Category:
- Single Bipolar Transistors
- Package:
- SC-75, SOT-416
- Datasheet:
-
BC846AT,115.pdf
- Description:
- TRANS NPN 65V 0.1A SC-75
- Quantity:
- Payment:
- Shipping:
Inventory:6,094
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Product details
Overview
BC846AT,115 from Nexperia is an NPN general-purpose bipolar junction transistor (BJT) in SOT416 (SC-75) surface-mount package, rated for 65 V collector-emitter voltage, 100 mA continuous collector current, and DC current gain (hFE) of 110–450 at VCE = 5 V and IC = 2 mA. It serves as a compact, low-power switching or linear amplification device in space-constrained consumer and industrial PCBs.
For engineers reviewing the BC846AT,115 datasheet, BC846AT,115 pinout, BC846AT,115 application, or BC846AT,115 equivalent, this page delivers verified electrical parameters, thermal limits, package dimensions, real-world use cases, and validated alternative transistors - all aligned to the official Nexperia BC846_SER v.9 product data sheet.
Technical Context
The BC846AT,115 operates as a standard NPN BJT with base-controlled current amplification. Its hFE group A (110–220) ensures predictable gain behavior across IC = 10 µA to 100 mA, while VCEsat ≤ 200 mV at IC = 10 mA / IB = 0.5 mA enables efficient low-voltage switching.
Thermal resistance Rth(j-a) is 833 K/W (SOT416), limiting usable power dissipation to 150 mW at Tamb ≤ 25 °C. The device supports operation from −65 °C to +150 °C ambient and features low capacitance (Cc = 2–3 pF, Ce = 11 pF), supporting stable performance up to 100 MHz transition frequency (fT).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 65 V - Maximum safe collector-emitter voltage with base open; defines high-side switch headroom in 24 V/48 V systems. |
| IC | 100 mA - Continuous collector current rating; suitable for driving LEDs, small relays, or logic-level signal buffering. |
| hFE (Group A) | 110–220 - Confirmed DC current gain range at VCE = 5 V, IC = 2 mA; enables reliable biasing in amplifier and switch designs. |
| VCEsat | ≤200 mV at IC = 10 mA / IB = 0.5 mA - Low saturation voltage minimizes conduction loss and self-heating in switching applications. |
| Ptot | 150 mW - Total power dissipation limit in free air on FR4 PCB; constrains maximum IC2RCE + IBVBE losses. |
| fT | 100 MHz - Transition frequency at VCE = 5 V, IC = 10 mA; supports audio-frequency amplification and fast digital switching. |
| Rth(j-a) | 833 K/W - Junction-to-ambient thermal resistance (SOT416); requires careful layout or derating above 25 °C ambient. |
Pinout & Package
SOT416 (SC-75) is a 3-pin, ultra-small surface-mount plastic package measuring 1.75 mm × 0.9 mm × 0.45 mm, optimized for high-density PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base | Control terminal; applies forward bias 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; connects to load or supply rail; carries full switched current in active/saturation modes. |
Key Features
| Feature | Design Value |
|---|---|
| NPN general-purpose BJT | Enables both linear amplification (e.g., sensor signal conditioning) and digital switching (e.g., GPIO-driven LED control) without external biasing complexity. |
| SOT416 (SC-75) package | Reduces PCB footprint by ~40% vs. SOT23; compatible with standard 4 mm pitch tape-and-reel handling and reflow soldering. |
| hFE Group A (110–220) | Provides tight gain consistency for production-batch reliability in feedback-critical circuits like current mirrors or analog comparators. |
| VCEO = 65 V / VCBO = 80 V | Supports operation in 24 V industrial buses and 48 V telecom supplies with margin against transients and ripple. |
| Low VCEsat (≤200 mV) | Reduces power loss and heat generation in battery-powered devices where efficiency directly impacts runtime. |
Applications
| LED Driver Circuit | Microcontroller GPIO Interface |
|---|---|
|
Use Scenario: Driving discrete indicator LEDs or low-current backlight segments from 3.3 V or 5 V microcontrollers. IC Role / Device Role / Timing Role: NPN switch configured in common-emitter mode, sinking current from LED anode to ground. Use Value: VCEsat ≤ 200 mV ensures >95% LED forward voltage utilization; hFE ≥ 110 allows full 20 mA LED drive with <200 µA base current. |
Use Scenario: Level-shifting or current boosting between low-drive-strength MCU pins and higher-current peripherals (e.g., sensors, optocouplers). IC Role / Device Role / Timing Role: Signal buffer amplifier operating in active region to preserve edge integrity and reduce propagation delay. Use Value: fT = 100 MHz supports clean 1–10 MHz digital signal replication; low Cc/Ce minimizes capacitive loading on driving pin. |
| Power Supply Enable Switch | Audio Pre-amplifier Stage |
|
Use Scenario: Enabling/disabling auxiliary 5 V or 12 V rails in multi-rail embedded power systems using MCU-controlled ON/OFF signals. IC Role / Device Role / Timing Role: High-side or low-side pass element controlled via base resistor network; operates in saturation during ON state. Use Value: Ptot = 150 mW and Rth(j-a) = 833 K/W allow safe 100 mA switching at ambient ≤ 50 °C without heatsinking. |
Use Scenario: Amplifying weak microphone or piezoelectric sensor outputs in portable audio devices before ADC sampling. IC Role / Device Role / Timing Role: Common-emitter small-signal amplifier with emitter degeneration resistor for stable gain and linearity. Use Value: NF = 2–10 dB at 1 kHz / 200 µA enables SNR-preserving pre-amplification; hFE consistency reduces batch-to-batch gain variance. |
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 |
|---|---|---|---|
| BC846B,115 | Same SOT416 package and VCEO/IC ratings, but hFE group B (200–450) - higher and wider gain range. | Preferred where higher current gain improves base drive margin in low-IB systems (e.g., battery-operated IoT nodes). | Select BC846B,115 only if design requires guaranteed hFE ≥ 200 at IC = 2 mA; otherwise BC846AT,115 offers tighter gain control. |
| MMBT3904LT1G | SOT23 package (larger footprint), same 40 V VCEO, 200 mA IC, hFE 100–300 - lower voltage rating, higher current, different thermal profile. | Used where board space permits larger package and system voltage stays ≤ 40 V (e.g., USB-powered peripherals). | Choose MMBT3904LT1G only if 40 V rating suffices and SOT23 layout compatibility exists; BC846AT,115 provides superior 65 V margin in industrial 24 V+ systems. |
Compared with BC846B,115, the BC846AT,115 delivers tighter hFE consistency for predictable biasing, while versus MMBT3904LT1G it trades off current capacity for higher voltage tolerance and smaller footprint - critical for space-constrained 65 V-rated designs.
Availability
BC846AT,115 is available at Aetrix Electronics and suitable for LED driver circuits, microcontroller interface buffering, and power supply enable switching requiring stable component supply, consistent hFE binning, and SOT416 footprint compatibility.
Supply support for BC846AT,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, consumer, and wearable markets.
The BC846 series belongs to Nexperia's general-purpose transistor portfolio, designed for cost-sensitive, high-volume applications demanding reliability, consistent parametric performance, and broad package options across SOT23/SOT323/SOT416 footprints.
FAQ
What is the maximum collector-emitter voltage rating for BC846AT,115?
The BC846AT,115 has a maximum collector-emitter voltage (VCEO) rating of 65 V under open-base conditions. This rating is confirmed in Table 2 and Table 6 of the Nexperia BC846_SER v.9 datasheet and defines the absolute upper limit for safe DC or peak repetitive voltage applied between collector and emitter terminals. Exceeding this value risks permanent breakdown.
Which package type does BC846AT,115 use, and what are its key mechanical dimensions?
The BC846AT,115 uses the SOT416 (SC-75) surface-mount package, with body dimensions of 1.75 mm × 0.9 mm × 0.45 mm and a 0.95 mm lead pitch. These measurements are specified in Figure 11 and Table 4 of the official datasheet and ensure compatibility with standard 4 mm pitch tape-and-reel feeding and reflow soldering profiles.
What is the DC current gain (hFE) range for BC846AT,115, and under what test conditions is it specified?
The BC846AT,115 belongs to hFE group A, with a guaranteed DC current gain range of 110 to 220 at VCE = 5 V and IC = 2 mA, per Table 8 of the Nexperia datasheet. This range is measured at Tamb = 25 °C and applies across the full production lot, enabling robust bias network design without gain-dependent recalibration.
Can BC846AT,115 be used in linear amplification applications, and what parameter supports this capability?
Yes, BC846AT,115 is suitable for linear amplification due to its specified noise figure (NF = 2–10 dB at IC = 200 µA, VCE = 5 V, RS = 2 kΩ, f = 1 kHz), transition frequency (fT = 100 MHz), and stable hFE across collector current. These characteristics - documented in Table 8 and Figures 5–8 - confirm its ability to deliver low-distortion, broadband small-signal gain in pre-amplifier stages.
What is the total power dissipation limit for BC846AT,115, and how does package type affect this value?
The BC846AT,115 has a total power dissipation (Ptot) limit of 150 mW at Tamb ≤ 25 °C, as defined in Table 6 for the SOT416 package. This value is lower than the 250 mW (SOT23) and 200 mW (SOT323) variants due to the SOT416's smaller copper area and higher thermal resistance (Rth(j-a) = 833 K/W), requiring explicit derating above 25 °C ambient.
BC846AT,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:
- 110 @ 2mA, 5V
- Power - Max:
- 150 mW
- Frequency - Transition:
- 100MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-75
BC846AT,115 FAQ
1.How can I place an order for BC846AT,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BC846AT,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 BC846AT,115 reliable?
The price and inventory of BC846AT,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC846AT,115 is usually 5 days.
3.What payment methods are accepted for BC846AT,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC846AT,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC846AT,115?
BC846AT,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC846AT,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 BC846AT,115?
For technical support, including BC846AT,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC846AT,115 requirements.
6.How does Aetrix verify that BC846AT,115 is sourced from the original manufacturer or authorized distributors?
All BC846AT,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 BC846AT,115 meets industry standards.
7.What is the process for return or replacement of BC846AT,115?
All BC846AT,115 units undergo pre-shipment inspection (PSI). If there is an issue with BC846AT,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 BC846AT,115 part is unused and in its original packaging.
Return procedure for BC846AT,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC846AT,115 Tags
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MMBT3906LT1G
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MMBT3904-7-F
Diodes Incorporated
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MMBT3904-TP
Micro Commercial Co
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MMBT2222A-7-F
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BC847B,215
Nexperia USA Inc.
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MMBT2222A-TP
Micro Commercial Co
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