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Nexperia USA Inc. BC856AQB-QZ
- Part No.:
- BC856AQB-QZ
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- 3-XDFN Exposed Pad
- Datasheet:
-
BC856AQB-QZ.pdf
- Description:
- TRANS PNP 65V 0.1A DFN1110D-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,900
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Product details
Overview
BC856AQB-Q from Nexperia is a PNP general-purpose transistor in a DFN1110D-3 (SOT8015) leadless package, rated for −65 V VCEO, −100 mA IC, and 340 mW Ptot at Tamb ≤ 25 °C. It delivers hFE = 125–250 at VCE = −5 V, IC = −2 mA, and is qualified to AEC-Q101 for automotive use in space-constrained switching and amplification circuits.
For engineers reviewing the BC856AQB-Q datasheet, BC856AQB-Q pinout, BC856AQB-Q application, or BC856AQB-Q equivalent, this device supports high-density PCB layouts with side-wettable flanks for AOI-compatible solder joint inspection, low-profile mounting (0.48 mm body height), and thermal performance validated on FR4 with 35 µm copper.
Technical Context
This PNP bipolar junction transistor operates in active, saturation, and cutoff regions with verified DC current gain stability across −55 °C to 150 °C ambient. Its VBE exhibits −2 mV/K temperature coefficient, and VCEsat remains ≤ −650 mV at IC = −100 mA, IB = −5 mA (pulsed).
Thermal resistance Rth(j-a) is 368 K/W on standard FR4 (35 µm Cu), enabling reliable operation up to 150 °C junction temperature. The DFN1110D-3 package supports reflow soldering with defined stencil thickness (0.1 mm) and land pattern per Figure 13.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −65 V: Maximum safe collector-emitter voltage with base open; defines off-state blocking capability in switching applications. |
| IC | −100 mA: Continuous DC collector current rating; sets maximum steady-state load drive capacity. |
| hFE | 125–250 at VCE = −5 V, IC = −2 mA: Confirmed DC current gain range for bias design and small-signal amplification. |
| Ptot | 340 mW at Tamb ≤ 25 °C (FR4, 35 µm Cu): Absolute power dissipation limit before thermal derating applies. |
| VCEsat | ≤ −650 mV at IC = −100 mA, IB = −5 mA (pulsed): Verified saturation voltage ensuring low conduction loss in switch-mode operation. |
| Rth(j-a) | 368 K/W: Junction-to-ambient thermal resistance on standard FR4; determines temperature rise under given power dissipation. |
Pinout & Package
DFN1110D-3 (SOT8015) is an ultra-thin, leadless plastic package measuring 1.1 mm × 1.0 mm × 0.48 mm with side-wettable flanks for automated optical inspection. Pitch is 0.65 mm; body thickness is 0.48 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base (B) | Control terminal for forward-biased PNP operation; requires negative base current relative to emitter to enable conduction. |
| 2 | Emitter (E) | Current source terminal in PNP configuration; connected to higher potential rail in typical common-emitter switch layout. |
| 3 | Collector (C) | Current sink terminal; carries load current to ground or lower-potential node when transistor is saturated. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22 standards. |
| Side-wettable flanks (SWF) | Enables automated optical inspection of solder joints without X-ray; critical for high-yield SMT assembly in safety-critical modules. |
| 0.48 mm package height | Reduces board profile in ultra-thin consumer and ADAS modules where Z-axis clearance is constrained to < 0.5 mm. |
| Low thermal resistance | 368 K/W on standard FR4 enables >200 mW usable power at 70 °C ambient without heatsinking in compact layouts. |
| High hFE consistency | 125–250 range at IC = −2 mA ensures predictable base drive requirements across production lots and temperature extremes. |
Applications
| Automotive Door Module Switching | Portable Medical Sensor Biasing |
|---|---|
|
Use Scenario: Controlling window lift motor direction via H-bridge half-bridge driver stage in door control units. IC Role / Device Role / Timing Role: PNP switch providing high-side current sourcing for N-channel gate drive logic level translation. Use Value: −65 V VCEO withstands load-dump transients; AEC-Q101 qualification ensures 15-year field reliability in 12 V vehicle systems. |
Use Scenario: Providing stable bias current to low-power op-amp input stages in battery-operated glucose meters. IC Role / Device Role / Timing Role: Precision current source configured in common-emitter mode with emitter degeneration resistor. Use Value: Tight hFE tolerance (125–250) minimizes unit-to-unit variation in bias current; low VCEsat preserves battery runtime. |
| Industrial PLC Input Protection | Smartphone Camera Flash Driver |
|
Use Scenario: Isolating and conditioning 24 V digital inputs in programmable logic controllers with overvoltage clamping. IC Role / Device Role / Timing Role: PNP front-end switch enabling fast turn-off during transient suppression events. Use Value: −80 V VCBO rating provides margin against surge-induced breakdown; side-wettable flanks ensure solder joint integrity in harsh environments. |
Use Scenario: Driving white LED flash arrays in mobile camera modules requiring precise current control and minimal board area. IC Role / Device Role / Timing Role: Low-profile current sink in constant-current LED driver topology with PWM dimming interface. Use Value: 1.1 mm × 1.0 mm footprint saves >40% board space vs. SOT23; 0.48 mm height avoids interference with stacked camera lenses. |
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 |
|---|---|---|---|
| BC856BQB-Q | Higher hFE range (220–475) at same VCE/IC; identical package and ratings. | Better suited for low-base-drive designs where gain consistency at light loads is critical. | Select when base current budget is limited and tighter hFE matching at IC = −2 mA is required. |
| BC846AQB-Q | NPN complement; same package, voltage/current ratings, and AEC-Q101 qualification but opposite polarity. | Used in complementary push-pull output stages or where NPN topology simplifies existing schematic layout. | Choose only for NPN-based circuit topologies; not a functional drop-in replacement for PNP roles. |
Compared with BC856BQB-Q, the BC856AQB-Q offers lower minimum hFE (125 vs. 220), easing stability in feedback loops; versus BC846AQB-Q, it enables high-side switching without level-shifting, preserving timing integrity in automotive signal chains.
Availability
BC856AQB-Q is available at Aetrix Electronics and suitable for automotive door modules, portable medical sensors, industrial PLC inputs, and smartphone camera flash drivers requiring stable component supply with AEC-Q101 compliance and ultra-small footprint.
Supply support for BC856AQB-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-enhancing components, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and consumer markets.
The BC856xQB-Q series belongs to Nexperia's AEC-Q101-qualified general-purpose transistor portfolio, engineered specifically for space-constrained, thermally demanding automotive and industrial control applications requiring robust solder joint inspection and long-term reliability.
FAQ
Is BC856AQB-Q suitable for automotive applications?
Yes - BC856AQB-Q is fully qualified to AEC-Q101 for stress testing including temperature cycling, high-temperature reverse bias, and ESD. It is recommended for automotive use in door modules, body control units, and sensor interfaces where −65 V VCEO and 150 °C Tj operation are required.
What is the maximum continuous power dissipation for BC856AQB-Q?
The maximum continuous power dissipation is 340 mW at ambient temperature ≤ 25 °C on a standard FR4 PCB with 35 µm copper. Derating begins linearly above 25 °C at 3.68 mW/°C, reaching zero at 125 °C ambient per the published thermal curve.
Does BC856AQB-Q support automatic optical inspection (AOI)?
Yes - its DFN1110D-3 package features side-wettable flanks (SWF), allowing visible solder fillet inspection using standard AOI systems without requiring X-ray. This meets IPC-A-610 Class 2/3 requirements for automotive and industrial assemblies.
How does BC856AQB-Q differ from BC856BQB-Q?
Both share identical package, voltage/current ratings, and thermal specs, but BC856AQB-Q has hFE = 125–250 while BC856BQB-Q offers hFE = 220–475 at VCE = −5 V, IC = −2 mA. The 'A' grade provides wider gain spread for cost-sensitive designs; 'B' grade suits precision biasing where higher minimum gain is needed.
BC856AQB-QZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- 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:
- 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
BC856AQB-QZ FAQ
1.How can I place an order for BC856AQB-QZ through Aetrix?
Please submit a Request for Quotation (RFQ) for BC856AQB-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 BC856AQB-QZ reliable?
The price and inventory of BC856AQB-QZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC856AQB-QZ is usually 5 days.
3.What payment methods are accepted for BC856AQB-QZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC856AQB-QZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC856AQB-QZ?
BC856AQB-QZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC856AQB-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 BC856AQB-QZ?
For technical support, including BC856AQB-QZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC856AQB-QZ requirements.
6.How does Aetrix verify that BC856AQB-QZ is sourced from the original manufacturer or authorized distributors?
All BC856AQB-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 BC856AQB-QZ meets industry standards.
7.What is the process for return or replacement of BC856AQB-QZ?
All BC856AQB-QZ units undergo pre-shipment inspection (PSI). If there is an issue with BC856AQB-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 BC856AQB-QZ part is unused and in its original packaging.
Return procedure for BC856AQB-QZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC856AQB-QZ Tags
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