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Nexperia USA Inc. BC856AQC-QZ
- Part No.:
- BC856AQC-QZ
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- 3-XDFN Exposed Pad
- Datasheet:
-
BC856AQC-QZ.pdf
- Description:
- TRANS PNP 65V 0.1A DFN1412D-3
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
BC856AQC-Q from Nexperia is a PNP general-purpose transistor in a DFN1412D-3 (SOT8009) leadless package, rated for −65 V VCEO, −100 mA IC, and 360 mW Ptot at Tamb ≤ 25 °C. It delivers hFE = 125–250 at VCE = −5 V, IC = −2 mA, and is AEC-Q101 qualified for automotive signal switching in space-constrained PCBs.
For engineers reviewing the BC856AQC-Q datasheet, BC856AQC-Q pinout, BC856AQC-Q application, or BC856AQC-Q equivalent, this device serves as a high-reliability, low-profile PNP switch in automotive body control modules, LED driver bias networks, and sensor interface stages where side-wettable flanks enable AOI-compatible solder joint inspection.
Technical Context
This PNP bipolar junction transistor operates with open-base collector-emitter breakdown of −65 V and emitter-base breakdown of −6 V, supporting robust voltage margin in 12 V/24 V automotive systems. Its DC current gain exhibits stable 125–250 range across −2 mA to −10 mA collector currents at 25 °C, with thermal derating down to 150 °C junction temperature.
The DFN1412D-3 package features side-wettable flanks for automated optical inspection and achieves 348 K/W junction-to-ambient thermal resistance on standard FR4 PCBs. Saturation voltages are specified at −650 mV VCE(sat) (IC = −100 mA, IB = −5 mA) and −850 mV VBE(sat) under identical conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −65 V - Maximum safe collector-emitter voltage with base open; enables use in 24 V automotive supply rails with headroom. |
| IC | −100 mA - Continuous DC collector current rating; supports medium-current switching of relays or small solenoids. |
| hFE | 125–250 - DC current gain at VCE = −5 V, IC = −2 mA; ensures predictable base drive requirements for stable switching. |
| VCE(sat) | −650 mV - Collector-emitter saturation voltage at IC = −100 mA, IB = −5 mA; limits conduction loss in high-duty-cycle applications. |
| Ptot | 360 mW - Total power dissipation at Tamb ≤ 25 °C on 35 µm copper FR4; defines thermal envelope for compact layout. |
| Tj(max) | 150 °C - Maximum junction temperature; aligns with AEC-Q101 automotive qualification for under-hood reliability. |
Pinout & Package
DFN1412D-3 (SOT8009) is a 3-terminal, ultra-small leadless plastic package measuring 1.4 mm × 1.2 mm × 0.48 mm with 0.8 mm pitch and side-wettable flanks for AOI-compatible reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base (B) | Control terminal accepting negative base current to forward-bias emitter-base junction and enable conduction. |
| 2 | Emitter (E) | Current source terminal; connected to higher potential (e.g., battery rail) in common-emitter PNP configurations. |
| 3 | Collector (C) | Current sink terminal; delivers load current to ground or lower-potential node when transistor is saturated. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Qualified per Automotive Electronics Council stress test standard; validated for under-hood and body-control module deployment. |
| Side-wettable flanks | Enables automated optical inspection of solder joints without X-ray; improves manufacturing yield in high-volume automotive PCB assembly. |
| Low profile (0.48 mm height) | Reduces board stack height in multi-layer modules such as ADAS sensor housings and compact ECU enclosures. |
| Thermal resistance (Rth(j-a)) | 348 K/W on standard FR4 - allows operation up to 150 °C junction temperature with minimal heatsinking in ambient-limited environments. |
Applications
| Automotive Body Control Module | LED Bias Current Regulation |
|---|---|
|
Use Scenario: Switching 12 V loads (e.g., door lock actuators, interior lighting) in centralized body control units. IC Role / Device Role / Timing Role: PNP switch controlling current path from battery rail to ground-return loads via microcontroller GPIO-driven base. Use Value: −65 V VCEO withstands load-dump transients; AEC-Q101 qualification ensures 15-year field reliability in temperature-cycled environments. |
Use Scenario: Providing stable bias current to high-brightness LEDs in instrument cluster backlighting. IC Role / Device Role / Timing Role: Constant-current sink configured with emitter resistor to set LED drive level independent of supply variation. Use Value: Tight hFE tolerance (125–250) enables precise current setting with minimal base drive variance; low VCE(sat) reduces thermal load on adjacent components. |
| Sensor Interface Level Shifting | Low-Power Microcontroller Peripheral Driver |
|
Use Scenario: Translating logic-level signals from 3.3 V sensors to 5 V or 12 V domains in engine management subsystems. IC Role / Device Role / Timing Role: Inverting level shifter using common-emitter configuration with pull-up to higher rail. Use Value: −6 V VEBO rating prevents damage during reverse-signal coupling; fast fT = 100 MHz supports kHz-range PWM modulation without phase lag. |
Use Scenario: Driving discrete MOSFET gates or optocoupler inputs from low-power MCU I/O pins in battery-powered telematics modules. IC Role / Device Role / Timing Role: Signal amplifier boosting weak GPIO output to deliver sufficient gate charge or LED forward current. Use Value: −100 mA IC rating handles typical optocoupler CTR requirements; DFN1412D-3 footprint saves >40% board area versus SOT23 equivalents. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP general-purpose transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BC856BQC-Q | Higher hFE range (220–475) at same VCE/IC; otherwise identical ratings and package. | Better suited for low-base-drive designs (e.g., high-impedance MCU outputs), but tighter gain binning increases cost. | Select when base current budget is constrained and gain consistency across temperature is critical. |
| BC846AQC-Q | NPN complement; same package, voltage/current ratings, and AEC-Q101 qualification; polarity inverted. | Used where circuit topology requires NPN switching (e.g., low-side load control), not direct functional replacement. | Choose only for NPN-based topologies; not a drop-in substitute due to opposite conduction polarity. |
Compared with BC856BQC-Q, the BC856AQC-Q offers lower gain tolerance for cost-sensitive designs requiring moderate base drive; versus BC846AQC-Q, it provides complementary PNP functionality essential for high-side switching where NPN cannot be substituted without circuit redesign.
Availability
BC856AQC-Q is available at Aetrix Electronics and suitable for automotive body control modules, LED driver circuits, sensor interface stages, and low-power peripheral drivers requiring stable component supply and AEC-Q101 compliance.
Supply support for BC856AQC-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 high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified components and advanced packaging technologies.
The BC856xQC-Q series belongs to Nexperia's AEC-Q101-qualified general-purpose transistor product line, engineered specifically for space-constrained, thermally demanding automotive signal-switching applications where side-wettable flanks and ultra-small DFN packaging are mandatory.
FAQ
What is the maximum allowable junction temperature for BC856AQC-Q?
The absolute maximum junction temperature is 150 °C, as defined in the limiting values table and verified under AEC-Q101 qualification. Operation above this threshold risks permanent degradation of hFE and increased leakage; derating curves show usable power drops to zero at 150 °C ambient on standard FR4 layouts.
Does BC856AQC-Q support automatic optical inspection (AOI)?
Yes - its DFN1412D-3 (SOT8009) package includes side-wettable flanks, enabling reliable solder-joint inspection using standard AOI systems without requiring X-ray. This feature is explicitly cited in the "Features and benefits" section of the official Nexperia datasheet Rev. 1.
How does BC856AQC-Q differ from BC856BQC-Q in practical design?
BC856AQC-Q has hFE = 125–250, while BC856BQC-Q offers 220–475 at identical test conditions. This means the 'A' grade requires ~2× more base current than the 'B' grade for the same collector current, impacting GPIO loading and base resistor sizing - a key trade-off between cost and drive efficiency.
Can BC856AQC-Q replace BC846AQC-Q in a circuit?
No - BC846AQC-Q is an NPN transistor with identical package and ratings but opposite polarity. Substituting them would invert switching behavior (e.g., turning a high-side switch into a non-functional low-side configuration), potentially causing system failure unless the entire bias network is redesigned.
BC856AQC-QZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BC856xQC-Q
- Package/Case:
- 3-XDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- PNP
- Current - Collector (Ic) (Max):
- 100 mA
- Voltage - Collector Emitter Breakdown (Max):
- 65 V
- Vce Saturation (Max) @ Ib, Ic:
- 650mV @ 5mA, 100mA
- Current - Collector Cutoff (Max):
- 15nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 125 @ 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
BC856AQC-QZ FAQ
1.How can I place an order for BC856AQC-QZ through Aetrix?
Please submit a Request for Quotation (RFQ) for BC856AQC-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 BC856AQC-QZ reliable?
The price and inventory of BC856AQC-QZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC856AQC-QZ is usually 5 days.
3.What payment methods are accepted for BC856AQC-QZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC856AQC-QZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC856AQC-QZ?
BC856AQC-QZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC856AQC-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 BC856AQC-QZ?
For technical support, including BC856AQC-QZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC856AQC-QZ requirements.
6.How does Aetrix verify that BC856AQC-QZ is sourced from the original manufacturer or authorized distributors?
All BC856AQC-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 BC856AQC-QZ meets industry standards.
7.What is the process for return or replacement of BC856AQC-QZ?
All BC856AQC-QZ units undergo pre-shipment inspection (PSI). If there is an issue with BC856AQC-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 BC856AQC-QZ part is unused and in its original packaging.
Return procedure for BC856AQC-QZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC856AQC-QZ Tags
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Diodes Incorporated
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Diodes Incorporated
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Micro Commercial Co
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Diodes Incorporated
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BC847B,215
Nexperia USA Inc.
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