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Nexperia USA Inc. BC846AQB-QZ
- Part No.:
- BC846AQB-QZ
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- 3-XDFN Exposed Pad
- Datasheet:
-
BC846AQB-QZ.pdf
- Description:
- TRANS NPN 65V 0.1A DFN1110D-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,600
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BC846AQB-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 (hFE) of 110–220 at VCE = 5 V, IC = 2 mA. It serves as a compact, automotive-grade switching and amplification device in space-constrained PCB layouts.
For engineers reviewing the BC846AQB-Q datasheet, BC846AQB-Q pinout, BC846AQB-Q application, or BC846AQB-Q equivalent, this part supports AOI-compatible solder joint inspection, operates up to 150 °C junction temperature, delivers ≤400 mV VCEsat at IC = 100 mA / IB = 5 mA, and features side-wettable flanks for reliable reflow soldering verification.
Technical Context
This discrete NPN bipolar junction transistor uses silicon planar epitaxial technology with a base-emitter junction optimized for stable hFE across −55 °C to +150 °C ambient. Its low-profile DFN1110D-3 package enables high-density routing while maintaining thermal resistance of 298 K/W (70 µm copper FR4).
The device meets AEC-Q101 stress test requirements for automotive use, including HTGB, HTRB, and temperature cycling. Electrical behavior is characterized under pulsed conditions (tp ≤ 300 µs, duty ≤ 0.02) for saturation voltage and transition frequency (fT = 100 MHz at VCE = 5 V, IC = 10 mA).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 65 V - Maximum collector-emitter voltage before breakdown; defines safe operating range in switching applications. |
| IC | 100 mA - Continuous collector current rating; sets upper limit for steady-state load drive capability. |
| hFE | 110–220 - DC current gain at VCE = 5 V, IC = 2 mA; determines required base drive for target collector current. |
| VCEsat | ≤400 mV at IC = 100 mA, IB = 5 mA - Low saturation voltage minimizes power loss and heating in on-state switching. |
| Ptot | 420 mW on 70 µm copper FR4 - Total power dissipation limit; defines thermal design margin for PCB layout. |
| fT | 100 MHz - Transition frequency indicates usable bandwidth for small-signal amplification up to ~10 MHz. |
| Rth(j-a) | 298 K/W - Junction-to-ambient thermal resistance on standard FR4; used to calculate ΔTj = P × Rth. |
Pinout & Package
DFN1110D-3 (SOT8015) is a 3-terminal, ultra-thin (0.48 mm height), side-wettable flank package measuring 1.1 mm × 1.0 mm × 0.48 mm with 0.65 mm pitch. Its leadless construction supports automated optical inspection and high-density placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base (B) | Controls conduction between collector and emitter; requires current-limited drive to achieve target hFE-based IC. |
| 2 | Emitter (E) | Common reference terminal for biasing; connected to ground or low-side return path in most switching configurations. |
| 3 | Collector (C) | High-side output node; carries switched load current and must be routed with adequate copper area for thermal management. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control modules and body electronics where reliability over temperature and lifetime is critical. |
| Side-wettable flanks (SWF) | Enables automated optical inspection (AOI) of solder joints without X-ray, reducing post-reflow defect escape in high-volume manufacturing. |
| Ultra-small footprint | 1.1 mm × 1.0 mm body size saves >50% board area versus SOT23, enabling miniaturization in wearables and sensor nodes. |
| Low package height | 0.48 mm max profile allows integration beneath shields or in stacked assemblies with strict Z-axis constraints. |
| Thermal performance | 298 K/W Rth(j-a) on 70 µm FR4 supports 420 mW dissipation without forced cooling in typical industrial ambient conditions. |
Applications
| Automotive Body Control Module | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Driving LED indicators and small solenoids in door latch, mirror, or lighting control units. IC Role / Device Role / Timing Role: NPN switch providing low-side current sink with fast turn-on/turn-off for PWM dimming and actuator sequencing. Use Value: AEC-Q101 qualification ensures 15-year field life; 65 V rating accommodates load dump transients up to 60 V. |
Use Scenario: Amplifying low-level analog signals from RTDs, thermistors, or bridge sensors before ADC sampling. IC Role / Device Role / Timing Role: Small-signal common-emitter amplifier stage with stable hFE across −40 °C to +125 °C operating range. Use Value: 100 MHz fT supports bandwidth up to 10 MHz; low VCEsat preserves dynamic range in rail-to-rail input stages. |
| Portable Medical Device Power Management | Smart Home Actuator Interface |
|
Use Scenario: Enabling/disabling power rails for Bluetooth LE modules or display backlights in battery-powered monitors. IC Role / Device Role / Timing Role: Low-quiescent-current switch controlling PMIC enable inputs or LDO bias paths. Use Value: 100 mA IC suffices for logic-level loads; 0.48 mm height enables stacking under compact battery compartments. |
Use Scenario: Isolating microcontroller GPIOs from relay coils, motor drivers, or buzzer circuits in smart thermostats and hubs. IC Role / Device Role / Timing Role: Digital interface buffer providing current gain and voltage level translation between 3.3 V MCU and 5–12 V peripherals. Use Value: Side-wettable flanks ensure solder joint integrity in consumer-grade reflow lines; 220 hFE max reduces base drive burden. |
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 |
|---|---|---|---|
| BC846BQB-Q | Higher hFE range (200–450 vs. 110–220); identical package, voltage, and current ratings. | Better suited for low-base-drive designs where precise gain matching is needed, e.g., analog amplifiers with fixed bias networks. | Select when higher DC gain stability is required; verify layout compatibility-same footprint and thermal specs apply. |
| MMBT3904LT1G | SOT-23 package (larger footprint, no side-wettable flanks); VCEO = 40 V, hFE = 100–300, not AEC-Q101 qualified. | Limited to non-automotive industrial or consumer use; lacks AOI support and automotive reliability validation. | Choose only for cost-sensitive, non-automotive prototypes where board space and inspection are not constraints. |
Compared with BC846BQB-Q, the BC846AQB-Q offers tighter hFE tolerance for predictable base drive in digital switching; versus MMBT3904LT1G, it provides automotive qualification, superior thermal performance per unit area, and manufacturability advantages via SWF.
Availability
BC846AQB-Q is available at Aetrix Electronics and suitable for automotive body electronics, portable medical instrumentation, and smart home actuator interfaces requiring stable component supply, long-term lifecycle assurance, and AEC-Q101 compliance.
Supply support for BC846AQB-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 BC846xQB-Q series belongs to Nexperia's AEC-Q101-qualified general-purpose transistor portfolio, designed specifically for space-constrained, thermally demanding automotive and industrial signal switching and amplification roles.
FAQ
Is BC846AQB-Q pin-compatible with BC846BQB-Q?
Yes-both share identical DFN1110D-3 (SOT8015) pinout (Base=Pin1, Emitter=Pin2, Collector=Pin3), same mechanical dimensions, thermal characteristics, and absolute maximum ratings. Only DC current gain differs: BC846AQB-Q is 110–220, BC846BQB-Q is 200–450. Layout reuse is fully supported.
What is the maximum allowable continuous power dissipation for BC846AQB-Q on a standard FR4 PCB?
At Tamb ≤ 25 °C, BC846AQB-Q supports 420 mW continuous power dissipation when mounted on FR4 with 70 µm copper and standard footprint. Derating begins above 25 °C at 3.4 mW/°C, reaching zero at 150 °C junction temperature per the power derating curve in Figure 1.
Does BC846AQB-Q require special reflow profile considerations due to its side-wettable flanks?
No special reflow profile is required-the DFN1110D-3 package is compatible with standard lead-free reflow profiles (J-STD-020). Side-wettable flanks enable AOI verification of solder fillet formation but do not alter thermal mass or ramp rate requirements beyond typical 0.1 mm stencil thickness and 0.65 mm pitch guidelines shown in Figure 13.
Can BC846AQB-Q replace BC846AW in existing SOT323 designs?
No-it is not a drop-in replacement. BC846AW uses SOT323 (SC-70) package with different footprint, thermal resistance, and pin orientation. BC846AQB-Q uses DFN1110D-3 (SOT8015), which has side-wettable flanks, smaller area (1.1 × 1.0 mm vs. 2.1 × 1.25 mm), and bottom-terminal construction. PCB redesign is mandatory.
BC846AQB-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:
- 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:
- 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
BC846AQB-QZ FAQ
1.How can I place an order for BC846AQB-QZ through Aetrix?
Please submit a Request for Quotation (RFQ) for BC846AQB-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 BC846AQB-QZ reliable?
The price and inventory of BC846AQB-QZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC846AQB-QZ is usually 5 days.
3.What payment methods are accepted for BC846AQB-QZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC846AQB-QZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC846AQB-QZ?
BC846AQB-QZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC846AQB-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 BC846AQB-QZ?
For technical support, including BC846AQB-QZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC846AQB-QZ requirements.
6.How does Aetrix verify that BC846AQB-QZ is sourced from the original manufacturer or authorized distributors?
All BC846AQB-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 BC846AQB-QZ meets industry standards.
7.What is the process for return or replacement of BC846AQB-QZ?
All BC846AQB-QZ units undergo pre-shipment inspection (PSI). If there is an issue with BC846AQB-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 BC846AQB-QZ part is unused and in its original packaging.
Return procedure for BC846AQB-QZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC846AQB-QZ Tags
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MMBT3906LT1G
onsemi
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MMBT3904-7-F
Diodes Incorporated
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MMBT3904LT1G
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MMBT3906-7-F
Diodes Incorporated
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MMBT3904-TP
Micro Commercial Co
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MMBT2222A-7-F
Diodes Incorporated
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BC846BLT1G
onsemi
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BC847B,215
Nexperia USA Inc.
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SMMBT3904LT1G
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MMBT2222A-TP
Micro Commercial Co
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MMBTA06LT1G
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