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Nexperia USA Inc. BC846BQB-QZ
- Part No.:
- BC846BQB-QZ
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- 3-XDFN Exposed Pad
- Datasheet:
-
BC846BQB-QZ.pdf
- Description:
- TRANS NPN 65V 0.1A DFN1110D-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,461
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Product details
Overview
BC846BQB-Q from Nexperia is an AEC-Q101-qualified NPN general-purpose transistor in a DFN1110D-3 (SOT8015) leadless package, rated for 65 V VCEO, 100 mA IC, and DC current gain of 200–450 at VCE = 5 V / IC = 2 mA. It serves as a compact, high-reliability switching and amplification device in space-constrained automotive and industrial PCBs.
For engineers reviewing the BC846BQB-Q datasheet, BC846BQB-Q pinout, BC846BQB-Q application, or BC846BQB-Q equivalent, key selection criteria include its side-wettable flanks for AOI-compatible solder joint inspection, 0.5 mm profile, AEC-Q101 qualification, and thermal resistance of 298 K/W on 70 µm FR4 copper - critical for thermally dense automotive modules.
Technical Context
This transistor operates as a discrete NPN bipolar junction device with base-controlled current amplification. Its design supports linear amplification and saturated switching across −55 °C to +150 °C ambient, enabled by low VCEsat (max 400 mV at IC = 100 mA / IB = 5 mA) and tight hFE binning (200–450).
The DFN1110D-3 package integrates side-wettable flanks for automated optical solder-joint verification and achieves 0.48 mm body height. Thermal performance is defined per JEDEC JESD51-2A: Rth(j-a) = 298 K/W on 70 µm FR4, enabling stable operation up to Tj = 150 °C under pulsed or continuous DC loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 65 V - Maximum collector-emitter voltage before breakdown; enables use in 48 V automotive power rails and industrial 24/36 V systems. |
| IC | 100 mA continuous - Sustained collector current rating; suitable for driving small relays, LEDs, and logic-level interface buffers. |
| hFE | 200–450 at VCE = 5 V, IC = 2 mA - Tight DC current gain bin ensures predictable base drive requirements in amplifier and switch designs. |
| VCEsat | ≤ 400 mV at IC = 100 mA, IB = 5 mA - Low saturation voltage minimizes conduction loss and self-heating in switching applications. |
| Ptot | 420 mW on 70 µm FR4 PCB - Total power dissipation limit defines maximum safe DC or pulsed power handling under standard layout conditions. |
| Tj max | 150 °C - Maximum junction temperature; supports operation in under-hood automotive environments and sealed industrial enclosures. |
Pinout & Package
BC846BQB-Q uses the DFN1110D-3 (SOT8015) ultra-thin leadless package: 1.1 mm × 1.0 mm × 0.48 mm body, 0.65 mm pitch, side-wettable flanks, and 0.5 mm profile - optimized for AOI and high-density routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base (B) | Current-controlled input node; requires ≤5 mA base drive for full saturation at 100 mA collector load. |
| 2 | Emitter (E) | Reference terminal for biasing; connected to ground or low-side return path in common-emitter configurations. |
| 3 | Collector (C) | Output current terminal; handles switched load current up to 100 mA with <400 mV drop in saturation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive use per stress test standard; supports deployment in engine control, lighting, and body electronics without additional qualification. |
| Side-wettable flanks | Enables automated optical inspection (AOI) of solder joints on bottom-terminated terminals - eliminates X-ray dependency in high-volume SMT lines. |
| 0.5 mm package height | Reduces Z-axis stack-up in slim-profile modules (e.g., ADAS sensors, infotainment bezels) where mechanical clearance is constrained. |
| Low thermal resistance | Rth(j-a) = 298 K/W on 70 µm FR4 allows >350 mW usable power before reaching 150 °C junction limit - improves reliability in thermally isolated layouts. |
Applications
| Automotive Interior Lighting | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Driving white LED strings in door handle illumination and ambient footwell lighting modules. IC Role / Device Role / Timing Role: NPN switch controlling LED current path with PWM dimming capability. Use Value: Low VCEsat (<400 mV) reduces power loss and heat generation in sealed plastic housings; AEC-Q101 rating ensures 15-year field life. |
Use Scenario: Amplifying low-level analog outputs from MEMS pressure or temperature sensors in factory automation nodes. IC Role / Device Role / Timing Role: Small-signal NPN amplifier in common-emitter configuration with fixed-gain bias network. Use Value: Tight hFE bin (200–450) enables consistent gain calibration across production batches without trimming. |
| Consumer Portable Audio Biasing | Smart Home Relay Interface |
|
Use Scenario: Providing stable bias current to Class-A headphone amplifier stages in battery-powered speakers. IC Role / Device Role / Timing Role: Current source configured via emitter resistor for quiescent point stabilization. Use Value: Low noise figure (10 dB @ 1 kHz) preserves signal integrity; 0.5 mm height accommodates thin speaker enclosures. |
Use Scenario: Isolating microcontroller GPIO from 12 V relay coils in smart HVAC controllers. IC Role / Device Role / Timing Role: General-purpose NPN switch interfacing 3.3 V logic to inductive load. Use Value: 65 V VCEO safely clamps flyback transients; side-wettable flanks ensure solder joint reliability in high-vibration environments. |
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 |
|---|---|---|---|
| BC847BQB-Q | Higher hFE range (200–450 → 250–630); identical package, VCEO, and IC. | Preferred where higher gain reduces base drive burden; less suitable when precise gain matching is required. | Select BC847BQB-Q only if circuit tolerates wider hFE spread and benefits from lower base current. |
| BC846B,115 (SOT23) | Same electrical specs but in larger SOT23-3 package; no side-wettable flanks; Rth(j-a) = 350 K/W. | Lacks AOI support and thermal performance; acceptable for non-automotive, cost-sensitive consumer boards. | Choose only when DFN footprint is unavailable or legacy SOT23 rework infrastructure exists. |
Compared with BC846BQB-Q, BC847BQB-Q offers higher gain flexibility at identical size and qualification, while BC846B,115 trades AOI compatibility and thermal efficiency for broader SMT equipment compatibility and lower unit cost.
Availability
BC846BQB-Q is available at Aetrix Electronics and suitable for automotive interior lighting, industrial sensor signal conditioning, consumer portable audio biasing, and smart home relay interface applications requiring stable component supply and AEC-Q101 compliance.
Supply support for BC846BQB-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 semiconductors, delivering high-performance, reliable components for automotive, industrial, and consumer markets.
The BC846xQB-Q series belongs to Nexperia's AEC-Q101-qualified general-purpose transistor portfolio, engineered specifically for space-constrained, high-reliability automotive and industrial switching and amplification roles.
FAQ
Is BC846BQB-Q suitable for automotive under-hood applications?
Yes. It is fully qualified to AEC-Q101 with guaranteed operation from −55 °C to +150 °C ambient, 65 V VCEO, and robust transient tolerance. Its DFN1110D-3 package meets automotive thermal and mechanical stress requirements for engine bay proximity, including vibration resistance and thermal cycling endurance.
What is the recommended PCB footprint for BC846BQB-Q reflow soldering?
The official Nexperia footprint specifies 0.34 mm × 0.65 mm solder lands with 0.1 mm stencil thickness, 0.44 mm solder paste aperture, and 0.88 mm occupied area. Side-wettable flanks require controlled reflow profiles (peak 260 °C, 60 s above 217 °C) to ensure fillet formation visible to AOI cameras.
How does BC846BQB-Q's hFE bin compare to BC846AQB-Q?
BC846BQB-Q has hFE = 200–450 at VCE = 5 V / IC = 2 mA, whereas BC846AQB-Q is binned 110–220. This 2× gain spread enables BC846BQB-Q to deliver higher current amplification with lower base drive, reducing MCU GPIO loading and improving switching speed in saturated mode.
Can BC846BQB-Q replace BC846B in existing SOT23 designs?
No direct replacement: BC846BQB-Q uses DFN1110D-3 (SOT8015), not SOT23. Pin-to-pin mapping differs (DFN: 1-B, 2-E, 3-C vs SOT23: 1-E, 2-B, 3-C), and thermal/mechanical behavior is distinct. Migration requires PCB redesign, solder profile validation, and AOI program updates - not a drop-in swap.
BC846BQB-QZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BC846xQB-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:
- 200 @ 2mA, 5V
- Power - Max:
- 340 mW
- Frequency - Transition:
- 100MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- DFN1110D-3
BC846BQB-QZ FAQ
1.How can I place an order for BC846BQB-QZ through Aetrix?
Please submit a Request for Quotation (RFQ) for BC846BQB-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 BC846BQB-QZ reliable?
The price and inventory of BC846BQB-QZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC846BQB-QZ is usually 5 days.
3.What payment methods are accepted for BC846BQB-QZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC846BQB-QZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC846BQB-QZ?
BC846BQB-QZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC846BQB-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 BC846BQB-QZ?
For technical support, including BC846BQB-QZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC846BQB-QZ requirements.
6.How does Aetrix verify that BC846BQB-QZ is sourced from the original manufacturer or authorized distributors?
All BC846BQB-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 BC846BQB-QZ meets industry standards.
7.What is the process for return or replacement of BC846BQB-QZ?
All BC846BQB-QZ units undergo pre-shipment inspection (PSI). If there is an issue with BC846BQB-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 BC846BQB-QZ part is unused and in its original packaging.
Return procedure for BC846BQB-QZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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