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Nexperia USA Inc. BC846AQC-QZ
- Part No.:
- BC846AQC-QZ
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- 3-XDFN Exposed Pad
- Datasheet:
-
BC846AQC-QZ.pdf
- Description:
- TRANS NPN 65V 0.1A DFN1412D-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,397
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Product details
Overview
BC846AQC-Q from Nexperia is an AEC-Q101-qualified NPN general-purpose transistor in a DFN1412D-3 (SOT8009) leadless package, rated for 65 V VCEO, 100 mA IC, and 110–220 hFE at VCE = 5 V / IC = 2 mA. It serves as a compact, automotive-grade switching and amplification device in space-constrained PCBs, especially where side-wettable flanks enable AOI-compatible solder joint inspection.
For engineers reviewing the BC846AQC-Q datasheet, BC846AQC-Q pinout, BC846AQC-Q application, or BC846AQC-Q equivalent, this part is selected for low-profile, high-reliability discrete switching in automotive body electronics, LED drivers, and sensor interface stages requiring stable DC gain and thermal robustness up to 150 °C junction temperature.
Technical Context
This NPN bipolar junction transistor operates with open-base collector-emitter breakdown voltage of 65 V and emitter-base breakdown voltage of 6 V, supporting biasing schemes requiring tight VBE control (typ. 580–700 mV at IC = 2 mA). Its hFE range (110–220) ensures predictable current amplification across production lots under standard 25 °C ambient conditions.
The DFN1412D-3 package delivers 0.48 mm body height and side-wettable flanks for automated optical inspection, while thermal resistance Rth(j-a) is 348 K/W on 35 µm FR4 copper - enabling operation in thermally dense automotive modules without forced cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 65 V - Maximum safe collector-emitter voltage before breakdown; enables use in 48 V automotive subsystems and industrial 24 V logic interfaces. |
| IC | 100 mA continuous - Sustained collector current rating; supports driving small relays, LEDs, or MOSFET gates without external heat sinking. |
| hFE | 110–220 at VCE = 5 V, IC = 2 mA - Confirmed DC current gain range; allows reliable base current calculation for saturation switching in digital logic buffers. |
| VCE(sat) | 400 mV max at IC = 100 mA, IB = 5 mA - Low saturation voltage minimizes power loss and self-heating during on-state operation. |
| Ptot | 360 mW at Tamb ≤ 25 °C on 35 µm FR4 - Total power dissipation limit defines maximum safe operating point under natural convection. |
| Tj(max) | 150 °C - Maximum junction temperature; validated per AEC-Q101, permitting deployment in under-hood automotive environments. |
Pinout & Package
DFN1412D-3 (SOT8009) is a 3-terminal, leadless ultra-small outline package measuring 1.4 mm × 1.2 mm × 0.48 mm with side-wettable flanks and 0.8 mm pitch. Its low profile and AOI-friendly construction support high-density automotive PCB assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base (B) | Current-controlled input node; requires ~5 mA drive to saturate at 100 mA collector load, enabling direct MCU GPIO interfacing. |
| 2 | Emitter (E) | Reference terminal tied to ground or low-side return path; forms common-emitter configuration with defined VBE threshold (~650 mV typical). |
| 3 | Collector (C) | Output current sink node; connects to load (e.g., LED anode or relay coil); rated for 65 V standoff and 200 mA pulsed peak current. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including body control modules and lighting systems, with full stress-test compliance per discrete semiconductor standard. |
| Side-wettable flanks (SWF) | Enables automated optical inspection of solder joints without X-ray; eliminates hidden voids in reflow-soldered connections on high-reliability boards. |
| 0.48 mm package height | Reduces vertical stack-up in multi-layer modules (e.g., smart sensors), improving mechanical robustness and airflow in sealed enclosures. |
| 65 V VCEO rating | Supports operation across 12 V, 24 V, and 48 V automotive domains without derating, simplifying BOM consolidation for multi-platform designs. |
Applications
| Automotive Interior Lighting | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Driving white LED strings in door handle illumination and ambient footwell lighting. IC Role / Device Role / Timing Role: Low-side switch controlling LED current via PWM from microcontroller output. Use Value: 400 mV VCE(sat) limits power loss to <10 mW at 25 mA, reducing thermal load in confined plastic housings. |
Use Scenario: Amplifying weak analog signals from resistive temperature detectors (RTDs) before ADC sampling. IC Role / Device Role / Timing Role: Common-emitter amplifier stage providing fixed DC gain (hFE = 110–220) with minimal offset drift. Use Value: Stable hFE over −40 °C to +125 °C ambient ensures consistent gain calibration across vehicle operating ranges. |
| Smart Actuator Interface | Low-Power IoT Node Switching |
|
Use Scenario: Enabling solenoid valves in HVAC actuators using 12 V supply and MCU-controlled base drive. IC Role / Device Role / Timing Role: General-purpose switching transistor handling 100 mA steady-state coil current with fast turn-on/turn-off. Use Value: 200 mA pulsed ICM accommodates inrush current during valve energization without secondary protection. |
Use Scenario: Controlling power to peripheral sensors (e.g., humidity ICs) in battery-powered edge nodes. IC Role / Device Role / Timing Role: Load switch isolating downstream circuitry to minimize standby leakage. Use Value: 5 μA ICBO at 150 °C ensures <100 nA total off-state current, extending coin-cell battery life beyond 5 years. |
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 |
|---|---|---|---|
| BC846BQC-Q | Higher hFE range (200–450) at same VCE/IC; otherwise identical ratings and package. | Better suited for low-base-drive applications (e.g., weak GPIO sources), but less tolerant of hFE variation in production. | Select when precise gain predictability is secondary to minimizing base current; verify stability under worst-case hFE min. |
| MMBT3904LT1G | SOT-23 package (larger footprint, no side-wettable flanks); VCEO = 40 V, hFE = 100–300; not AEC-Q101 qualified. | Limited to non-automotive consumer/industrial use; lacks AOI support and 65 V headroom for 48 V systems. | Choose only for cost-sensitive, non-automotive prototypes where board space and qualification are not constraints. |
Compared with BC846BQC-Q, the BC846AQC-Q offers tighter hFE tolerance for deterministic base drive design; versus MMBT3904LT1G, it provides automotive qualification, higher voltage margin, and AOI-ready packaging - critical for production-grade automotive and industrial deployments.
Availability
BC846AQC-Q is available at Aetrix Electronics and suitable for automotive interior lighting, industrial sensor signal conditioning, smart actuator interface, and low-power IoT node switching requiring stable component supply and AEC-Q101 compliance.
Supply support for BC846AQC-Q 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 efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and mobile markets.
The BC846xQC-Q series belongs to Nexperia's AEC-Q101-qualified general-purpose transistor product line, engineered specifically for space-constrained, thermally demanding automotive and industrial control applications requiring AOI-compatible packaging and stable DC parameters.
FAQ
Is BC846AQC-Q pin-compatible with BC846BQC-Q?
Yes - both share identical DFN1412D-3 (SOT8009) package, pin 1 (base), pin 2 (emitter), pin 3 (collector), and mechanical footprint. The only difference is DC current gain: BC846AQC-Q is 110–220 hFE, while BC846BQC-Q is 200–450 hFE. No layout change is needed for substitution, though base resistor values may require adjustment for target IC.
What is the maximum allowable PCB copper thickness for thermal derating compliance?
For full-rated 360 mW power dissipation, the datasheet specifies single-sided 35 µm copper on FR4. With 70 µm copper, Ptot increases to 450 mW at Tamb ≤ 25 °C. Thicker copper improves thermal performance but requires matching solder paste stencil and reflow profile to avoid tombstoning due to asymmetric wetting.
Does BC846AQC-Q support 100 % automated optical inspection (AOI)?
Yes - its side-wettable flanks (SWF) are explicitly designed for AOI compatibility. The exposed metal on package edges reflects light uniformly during inspection, enabling reliable detection of solder bridging, insufficient fillet, or missing joints without X-ray or manual verification - a key requirement for automotive Tier 1 manufacturing.
Can BC846AQC-Q replace BC846AW in existing designs?
No - BC846AW uses SOT323 (SC-70) package with different pinout (1=E, 2=C, 3=B) and no side-wettable flanks. Physical replacement would require PCB redesign. Electrical specs differ too: BC846AW has VCEO = 65 V but only 100 mW Ptot and no AEC-Q101 qualification. Migration must include layout, thermal, and qualification validation.
BC846AQC-QZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BC846xCQ-Q
- Package/Case:
- 3-XDFN Exposed Pad
- 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:
- 360 mW
- Frequency - Transition:
- 100MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- DFN1412D-3
BC846AQC-QZ FAQ
1.How can I place an order for BC846AQC-QZ through Aetrix?
Please submit a Request for Quotation (RFQ) for BC846AQC-QZ 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 BC846AQC-QZ reliable?
The price and inventory of BC846AQC-QZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC846AQC-QZ is usually 5 days.
3.What payment methods are accepted for BC846AQC-QZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC846AQC-QZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC846AQC-QZ?
BC846AQC-QZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC846AQC-QZ 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 BC846AQC-QZ?
For technical support, including BC846AQC-QZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC846AQC-QZ requirements.
6.How does Aetrix verify that BC846AQC-QZ is sourced from the original manufacturer or authorized distributors?
All BC846AQC-QZ 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 BC846AQC-QZ meets industry standards.
7.What is the process for return or replacement of BC846AQC-QZ?
All BC846AQC-QZ units undergo pre-shipment inspection (PSI). If there is an issue with BC846AQC-QZ, 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 BC846AQC-QZ part is unused and in its original packaging.
Return procedure for BC846AQC-QZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC846AQC-QZ Tags
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Diodes Incorporated
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Diodes Incorporated
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MMBT3904-TP
Micro Commercial Co
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MMBT2222A-7-F
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Nexperia USA Inc.
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Micro Commercial Co
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