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Nexperia USA Inc. BC846BMB,315
- Part No.:
- BC846BMB,315
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- 3-XFDFN
- Datasheet:
-
BC846BMB,315.pdf
- Description:
- TRANS NPN 65V 0.1A DFN1006B-3
- Quantity:
- Payment:
- Shipping:
Inventory:15,465
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Product details
Overview
BC846BMB from Nexperia is an AEC-Q101-qualified NPN general-purpose transistor in a DFN1006B-3 (SOT883B) package, rated for 65 V VCEO, 100 mA IC, and DC current gain (hFE) of 200–450 at 2 mA/5 V. It delivers low-profile switching and amplification in space-constrained mobile and automotive control circuits.
For engineers reviewing the BC846BMB datasheet, BC846BMB pinout, BC846BMB application, or BC846BMB equivalent, key selection factors include its 0.37 mm package height, 250 mW power dissipation on FR4 PCB, AEC-Q101 qualification, and verified SOT883B footprint compatibility with high-density layout requirements.
Technical Context
This NPN bipolar junction transistor operates as a discrete switching or linear amplification device with base-controlled collector current. Its design supports stable DC biasing across −55 °C to 150 °C ambient, with VBE = 660 mV typ. at 2 mA and VCE(sat) = 200 mV max. at IC/IB = 20.
Thermal performance is defined by Rth(j-a) = 500 K/W on standard FR4, and transient thermal impedance curves confirm suitability for pulsed operation up to 200 mA peak with ≤300 µs pulse width and 2% duty cycle.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 65 V - Maximum safe collector-emitter voltage with base open; defines breakdown margin in switching applications. |
| IC | 100 mA - Continuous collector current rating; sets upper limit for steady-state load drive capability. |
| hFE | 200–450 - DC current gain at 2 mA/5 V; determines required base drive for predictable saturation in logic-level interfaces. |
| VCE(sat) | 200–400 mV - Saturation voltage at IC = 100 mA, IB = 5 mA; directly impacts conduction loss and heat generation in switch mode. |
| Ptot | 250 mW - Total power dissipation on FR4 PCB at Tamb ≤ 25 °C; establishes thermal derating baseline for board-level thermal design. |
| fT | 100 MHz - Transition frequency at 10 mA/5 V; confirms usable bandwidth for low-speed digital switching and audio-frequency amplification. |
Pinout & Package
DFN1006B-3 (SOT883B) is a leadless, ultra-small surface-mount plastic package measuring 1.0 mm × 0.6 mm × 0.37 mm with 0.35 mm pitch and three solder lands. It enables high-density placement and automated reflow assembly with minimal board area.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base | Control terminal for forward-biased junction; requires current-limited drive to achieve target IC and avoid thermal runaway. |
| 2 | Emitter | Current return path tied to circuit common; forms low-impedance reference for VBE biasing and emitter-follower configurations. |
| 3 | Collector | Output current terminal; connects to load or pull-up network; must remain within 65 V and 100 mA limits under all operating conditions. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22 standards. |
| 0.37 mm package height | Enables stacking under shields or integration into ultra-thin modules such as wearable sensors and compact battery management systems. |
| Power dissipation matching SOT23 | Delivers SOT23-level thermal performance in 40% less board area, supporting miniaturization without sacrificing robustness. |
| Binary top-side marking (0100 1011) | Enables automated optical inspection (AOI) and traceability in high-volume SMT lines using standard vision systems. |
Applications
| Automotive Door Module | Smartphone LED Driver |
|---|---|
Use Scenario: Low-side switching of window motor relays and mirror actuator solenoids in body control units. IC Role / Device Role / Timing Role: Discrete NPN switch controlling 12 V inductive loads with flyback protection. Use Value: AEC-Q101 qualification ensures long-term reliability under vibration and thermal cycling; 65 V rating accommodates load dump transients. |
Use Scenario: Current-regulated driving of status LEDs in smartphone front bezels with tight Z-height constraints. IC Role / Device Role / Timing Role: Constant-current sink configured via base resistor for precise brightness control. Use Value: 0.37 mm profile allows placement beneath display stackup; 100 mA rating supports multi-LED parallel strings. |
| USB-C Power Delivery Monitor | Industrial Sensor Signal Conditioning |
Use Scenario: Level-shifting and enable control for USB-C port power switches in portable chargers and docks. IC Role / Device Role / Timing Role: Digital interface buffer translating 1.8 V/3.3 V logic to 5 V–12 V gate drive levels. Use Value: hFE range of 200–450 ensures consistent turn-on across process variation; low VCE(sat) minimizes voltage drop in feedback paths. |
Use Scenario: Amplifying low-level analog outputs from MEMS pressure or temperature sensors before ADC sampling. IC Role / Device Role / Timing Role: Common-emitter amplifier stage with fixed bias and emitter degeneration. Use Value: fT = 100 MHz provides ample bandwidth for <10 kHz sensor signals; low noise figure (2–10 dB) preserves SNR. |
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 |
|---|---|---|---|
| BC847BMB | Higher hFE range (200–450 → 300–630); identical VCEO, IC, and package. | Better suited for low-base-drive applications (e.g., microcontroller GPIO direct drive), but may exhibit higher leakage at elevated temperature. | Select when tighter hFE tolerance or lower IB requirement is critical; verify thermal stability at >100 °C. |
| MMBT3904LT1G | Same SOT-23 package (not DFN); VCEO = 40 V; hFE = 100–300; not AEC-Q101 qualified. | Lacks automotive qualification and 65 V margin; requires larger PCB area and different stencil design. | Use only in non-automotive consumer or industrial applications where cost and legacy footprint compatibility outweigh size and qualification needs. |
Compared with BC846BMB, BC847BMB offers higher gain for reduced base drive but no improvement in voltage or thermal rating, while MMBT3904LT1G trades qualification and miniaturization for broader distributor availability and legacy design reuse.
Availability
BC846BMB is available at Aetrix Electronics and suitable for automotive body electronics, portable consumer devices, and industrial sensor interfaces requiring stable component supply, AEC-Q101 compliance, and ultra-compact packaging.
Supply support for BC846BMB 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 roots in Philips Semiconductors and headquartered in Nijmegen, Netherlands.
The BC846BMB belongs to Nexperia's AEC-Q101-qualified general-purpose transistor family, engineered specifically for space- and reliability-critical roles in automotive infotainment, ADAS subsystems, and portable electronics.
FAQ
Is BC846BMB pin-compatible with SOT23-packaged transistors?
No. BC846BMB uses the DFN1006B-3 (SOT883B) package with a 0.35 mm pitch and bottom-terminal layout, whereas SOT23 has 0.95 mm pitch and gull-wing leads. Footprint, stencil, and reflow profiles are incompatible without redesign.
What is the maximum allowable continuous collector current at 85 °C ambient?
At Tamb = 85 °C, the power derating curve shows Ptot ≈ 150 mW. With VCE(sat) ≈ 300 mV at IC = 100 mA, the practical continuous IC limit is ~50 mA to maintain junction temperature below 150 °C on standard FR4.
Does BC846BMB support pulsed operation beyond 100 mA?
Yes. The datasheet specifies ICM = 200 mA for single pulses ≤1 ms. At 200 mA and 300 µs pulse width, VCE(sat) remains ≤400 mV, enabling short-duration surge handling in relay drivers and fault-protection circuits.
How is the binary marking "0100 1011" decoded for traceability?
The marking corresponds to the 8-bit code "01001011", which maps to the product variant BC846BMB per Nexperia's internal binning scheme. It is read left-to-right on the top surface with Pin 1 at the marked corner, and is used for lot traceability and automated optical verification during assembly.
BC846BMB,315 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- 3-XFDFN
- 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:
- 200mV @ 500µA, 10mA
- Current - Collector Cutoff (Max):
- 15nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 200 @ 2mA, 5V
- Power - Max:
- 250 mW
- Frequency - Transition:
- 100MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DFN1006B-3
BC846BMB,315 FAQ
1.How can I place an order for BC846BMB,315 through Aetrix?
Please submit a Request for Quotation (RFQ) for BC846BMB,315 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 BC846BMB,315 reliable?
The price and inventory of BC846BMB,315 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC846BMB,315 is usually 5 days.
3.What payment methods are accepted for BC846BMB,315?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC846BMB,315 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC846BMB,315?
BC846BMB,315 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC846BMB,315 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 BC846BMB,315?
For technical support, including BC846BMB,315 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC846BMB,315 requirements.
6.How does Aetrix verify that BC846BMB,315 is sourced from the original manufacturer or authorized distributors?
All BC846BMB,315 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 BC846BMB,315 meets industry standards.
7.What is the process for return or replacement of BC846BMB,315?
All BC846BMB,315 units undergo pre-shipment inspection (PSI). If there is an issue with BC846BMB,315, 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 BC846BMB,315 part is unused and in its original packaging.
Return procedure for BC846BMB,315:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC846BMB,315 Tags
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