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Nexperia USA Inc. BC846AQBZ
- Part No.:
- BC846AQBZ
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- 3-XDFN Exposed Pad
- Datasheet:
-
BC846AQBZ.pdf
- Description:
- TRANS NPN 65V 0.1A DFN1110D-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,975
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Product details
Overview
BC846AQB from Nexperia is an NPN general-purpose transistor in a leadless DFN1110D-3 (SOT8015) 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, surface-mount switching and amplification device in space-constrained consumer and industrial PCBs.
For engineers reviewing the BC846AQB datasheet, BC846AQB pinout, BC846AQB application, or BC846AQB equivalent, this part is selected for low-profile, AOI-compatible general-purpose transistor roles where thermal performance on FR4 (up to 420 mW with 70 µm copper), side-wettable flanks, and tight hFE binning are critical.
Technical Context
This transistor operates as a single-element NPN bipolar junction device optimized for linear amplification and digital switching. Its design centers on stable hFE across temperature (−55 °C to 150 °C), low VCE(sat) (≤400 mV at IC = 100 mA, IB = 5 mA), and robust breakdown ratings: 80 V VCBO, 65 V VCEO, and 6 V VEBO.
The DFN1110D-3 package enables automated optical inspection via side-wettable flanks and achieves 0.48 mm body height. Thermal resistance Rth(j-a) is 298 K/W on standard FR4 with 70 µm copper, supporting reliable operation up to 150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 65 V - Maximum collector-emitter voltage before breakdown under open-base condition; defines safe operating voltage headroom in switching applications. |
| IC | 100 mA - Continuous DC 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 base drive requirements for saturation in switch mode. |
| VCE(sat) | ≤400 mV - Collector-emitter saturation voltage at IC = 100 mA, IB = 5 mA; directly impacts conduction loss and self-heating in on-state. |
| Ptot | 420 mW - Total power dissipation on FR4 with 70 µm copper; defines thermal envelope for ambient temperatures ≤25 °C. |
| fT | 100 MHz - Transition frequency at VCE = 5 V, IC = 10 mA; indicates usable bandwidth for small-signal amplification. |
Pinout & Package
BC846AQB 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 for AOI compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base (B) | Control terminal for forward-biasing the base-emitter junction; requires current-limited drive to achieve target hFE-based collector current. |
| 2 | Emitter (E) | Current return path; internally connected to die substrate; must be routed with low-inductance trace for switching stability. |
| 3 | Collector (C) | Main output terminal; handles full load current and voltage stress; thermally coupled to exposed paddle (not electrically accessible). |
Key Features
| Feature | Design Value |
|---|---|
| Side-wettable flanks | Enables automated optical inspection (AOI) of solder joints without X-ray; eliminates post-reflow visual blind spots. |
| Ultra-low profile | 0.48 mm max height - reduces board stack-up in slim consumer devices and multi-layer modules where Z-axis clearance is constrained. |
| High thermal power rating | 420 mW on standard FR4 (70 µm Cu) - supports higher continuous current than comparable SOT23 parts without derating at 25 °C ambient. |
| Controlled hFE binning | A-grade (110–220) ensures predictable base drive sizing across production lots, reducing design margin uncertainty. |
Applications
| LED Driver Circuit | Signal Level Shifting |
|---|---|
|
Use Scenario: Driving discrete indicator LEDs in portable battery-powered devices with tight board area budgets. IC Role / Device Role / Timing Role: NPN switch controlling LED anode current path; operated in saturation with fixed base resistor. Use Value: Low VCE(sat) (≤400 mV) minimizes voltage drop and preserves battery runtime; DFN1110D-3 footprint saves >40% board area vs. SOT23. |
Use Scenario: Translating 3.3 V logic signals to 5 V domains in mixed-voltage microcontroller interfaces. IC Role / Device Role / Timing Role: Single-transistor level shifter using emitter-follower or common-emitter configuration with pull-up resistors. Use Value: fT = 100 MHz supports clean edge transitions up to ~10 MHz; tight hFE binning ensures consistent rise/fall time matching. |
| Low-Power Sensor Interface | Power Supply Enable Switch |
|
Use Scenario: Amplifying weak analog outputs from temperature or ambient light sensors before ADC input. IC Role / Device Role / Timing Role: Common-emitter amplifier stage with emitter degeneration for linearity and bias stability. Use Value: hFE range (110–220) allows precise gain setting; low noise figure (≤10 dB @ 1 kHz) preserves signal integrity in sub-mV signals. |
Use Scenario: Enabling/disabling auxiliary rails (e.g., 3.3 V LDO output) in power sequenced systems. IC Role / Device Role / Timing Role: High-side or low-side enable switch controlled by MCU GPIO; operated in hard saturation. Use Value: 65 V VCEO provides margin against supply transients; 200 mA ICM peak rating handles inrush during rail turn-on. |
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 | Higher hFE (200–450) at same test conditions; otherwise identical ratings and package. | Preferred where lower base drive current is needed or tighter gain consistency is required in analog stages. | Select BC846BQB when circuit sensitivity to hFE variation demands higher minimum gain; verify saturation margin at target IC. |
| MMBT3904LT1G | SOT-23 package (larger footprint, no side-wettable flanks); VCEO = 40 V, hFE = 100–300, Ptot = 310 mW. | Used where legacy SOT-23 tooling exists but space and AOI are not constraints; unsuitable for 65 V designs. | Choose only if board layout cannot accommodate DFN1110D-3 or if 40 V rating suffices; expect ~25% lower power handling and no AOI support. |
Compared with BC846BQB and MMBT3904LT1G, BC846AQB offers the optimal balance of compactness, 65 V robustness, and predictable mid-range hFE-making it ideal for cost-sensitive, space-constrained switching where moderate gain tolerance is acceptable.
Availability
BC846AQB is available at Aetrix Electronics and suitable for LED driver circuits, signal level shifting, low-power sensor interfaces, and power supply enable switches requiring stable component supply, consistent hFE binning, and AOI-compatible packaging.
Supply support for BC846AQB 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 essential semiconductors-including discretes, logic, and MOSFETs-for automotive, industrial, and consumer markets.
The BC846xQB series targets space-constrained general-purpose switching and amplification, delivering AOI-ready packaging, enhanced thermal performance, and tightly binned gain-specifically for modern miniaturized PCBs demanding manufacturability and predictability.
FAQ
Is BC846AQB suitable for automotive applications?
No. BC846AQB is not AEC-Q200 qualified and lacks automotive-specific testing, qualification, or guaranteed extended temperature operation beyond its specified −55 °C to 150 °C junction range. Nexperia explicitly states non-automotive qualification in its legal disclaimers; use only in industrial, consumer, or commercial systems.
What is the maximum allowable base current for continuous operation?
The absolute maximum peak base current is 100 mA (single pulse, tp ≤ 1 ms), but continuous operation must stay within the DC power limit. At IC = 100 mA and hFE = 110, typical IB ≈ 0.91 mA; sustained IB above 5 mA risks exceeding Ptot due to VBE × IB dissipation, especially at elevated ambient temperatures.
How does the DFN1110D-3 package affect thermal performance compared to SOT-23?
DFN1110D-3 delivers lower Rth(j-a) (298 K/W vs. ~350–400 K/W for standard SOT-23 on same FR4) due to improved copper pad coupling and shorter thermal paths. Its side-wettable flanks also enhance solder joint thermal conduction, enabling higher continuous power (420 mW vs. ~310 mW for MMBT3904LT1G) without increasing footprint area.
Can BC846AQB replace BC846AW in existing designs?
No-BC846AW uses an SC-70 (SOT323) package with different pinout (1=E, 2=C, 3=B), incompatible land pattern, and no side-wettable flanks. While electrical specs overlap partially, mechanical incompatibility, thermal differences (Rth(j-a) ~450 K/W), and AOI capability make direct substitution invalid without PCB and assembly process requalification.
BC846AQBZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BC846xQB
- 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- DFN1110D-3
BC846AQBZ FAQ
1.How can I place an order for BC846AQBZ through Aetrix?
Please submit a Request for Quotation (RFQ) for BC846AQBZ 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 BC846AQBZ reliable?
The price and inventory of BC846AQBZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC846AQBZ is usually 5 days.
3.What payment methods are accepted for BC846AQBZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC846AQBZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC846AQBZ?
BC846AQBZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC846AQBZ 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 BC846AQBZ?
For technical support, including BC846AQBZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC846AQBZ requirements.
6.How does Aetrix verify that BC846AQBZ is sourced from the original manufacturer or authorized distributors?
All BC846AQBZ 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 BC846AQBZ meets industry standards.
7.What is the process for return or replacement of BC846AQBZ?
All BC846AQBZ units undergo pre-shipment inspection (PSI). If there is an issue with BC846AQBZ, 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 BC846AQBZ part is unused and in its original packaging.
Return procedure for BC846AQBZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC846AQBZ Tags
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MMBT3906LT1G
onsemi
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MMBT3904-7-F
Diodes Incorporated
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MMBT3904LT1G
onsemi
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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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MMBT2222ALT1G
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