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Nexperia USA Inc. BC846BW,115
- Part No.:
- BC846BW,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
BC846BW,115.pdf
- Description:
- TRANS NPN 65V 0.1A SOT-323
- Quantity:
- Payment:
- Shipping:
Inventory:5,779
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Product details
Overview
BC846BW,115 from Nexperia is a 65 V, 100 mA NPN general-purpose transistor in SOT323 (SC-70) package, optimized for low-power switching and linear amplification in space-constrained PCBs. It delivers hFE = 200–450 at VCE = 5 V / IC = 2 mA, VCE(sat) ≤ 400 mV at IC = 100 mA / IB = 5 mA, and fT = 100 MHz - enabling reliable signal conditioning in sensor interfaces and logic-level translation circuits.
For engineers reviewing the BC846BW,115 datasheet, BC846BW,115 pinout, BC846BW,115 application, or BC846BW,115 equivalent, key selection criteria include DC current gain grouping (Group B), thermal resistance (Rth(j-a) = 625 K/W on FR4), and SC-70 footprint compatibility with high-density routing and reflow soldering profiles.
Technical Context
The BC846BW operates as a discrete NPN bipolar junction transistor with fixed emitter-base and collector-base junction structures, supporting both active-mode amplification and saturated-switching operation. Its Group B hFE bin (200–450) ensures predictable current control across production lots without external bias trimming.
Designed for surface-mount assembly on standard FR4 PCBs, it relies on intrinsic thermal characteristics - including Tj(max) = 150 °C and Ptot = 200 mW at Tamb ≤ 25 °C - to maintain stable gain and saturation voltage under transient loads up to 200 mA peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 65 V - Maximum safe collector-emitter voltage before breakdown; enables use in 48 V rail monitoring and 24 V industrial I/O stages. |
| IC | 100 mA continuous - Sustained load drive capability for LED indicators, relay drivers, and small-signal MOSFET gate control. |
| hFE | 200–450 @ VCE = 5 V, IC = 2 mA - Tight gain binning reduces variation in base resistor sizing for consistent switching thresholds. |
| VCE(sat) | ≤ 400 mV @ IC = 100 mA, IB = 5 mA - Low saturation voltage minimizes power loss and self-heating during on-state operation. |
| fT | 100 MHz - Supports audio-frequency amplification and digital signal edge sharpening up to ~10 MHz square-wave inputs. |
| Rth(j-a) | 625 K/W - Thermal resistance on standard FR4 defines maximum allowable power dissipation before junction overheating at ambient. |
Pinout & Package
SOT323 (SC-70) plastic surface-mounted package: 1.3 mm × 1.8 mm × 0.95 mm body, 0.65 mm lead pitch, tin-plated terminations compatible with IPC-J-STD-020 reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base (B) | Current-controlled input node; requires series resistor to limit IB and ensure saturation at target IC. |
| 2 | Emitter (E) | Reference terminal for bias network; connected to ground or low-side return path in common-emitter configurations. |
| 3 | Collector (C) | Output current sink node; routed to load (e.g., LED anode, relay coil) with pull-up or supply connection. |
Key Features
| Feature | Design Value |
|---|---|
| Two gain selections | Group B (200–450 hFE) enables precise current gain matching in matched-pair amplifier stages or feedback networks. |
| SOT323 (SC-70) footprint | 0.65 mm pitch and 1.3 mm width allow placement in <1.5 mm board spacing - critical for wearables and compact IoT sensor nodes. |
| Low VCE(sat) | 400 mV max at full rated current reduces conduction loss by >30% vs. legacy TO-92 transistors in battery-powered switches. |
| 150 °C junction rating | Enables operation in sealed enclosures or near heat sources without derating below 100 mA up to +85 °C ambient. |
Applications
| Industrial Sensor Interface | LED Status Indication |
|---|---|
Use Scenario: Amplifying microamp-level output from thermistor or photodiode front-ends into clean 0–3.3 V logic-compatible signals. IC Role / Device Role / Timing Role: NPN common-emitter amplifier with emitter-degeneration bias for stable DC gain and bandwidth control. Use Value: 100 MHz fT and 200–450 hFE support 10 kHz–100 kHz analog signal bandwidth while maintaining <1% gain drift over temperature. |
Use Scenario: Driving single-color or RGB indicator LEDs from 3.3 V or 5 V microcontroller GPIO pins. IC Role / Device Role / Timing Role: Low-side saturated switch controlling LED cathode current with minimal voltage drop. Use Value: VCE(sat) ≤ 400 mV preserves >90% of supply voltage across LED, enabling full brightness even at 20 mA drive current. |
| Logic-Level Translation | Small-Signal Relay Driver |
Use Scenario: Converting 1.8 V or 3.3 V logic outputs to 5 V or 12 V compatible levels for interfacing with legacy peripherals. IC Role / Device Role / Timing Role: Common-emitter level shifter with pull-up resistor on collector and grounded emitter. Use Value: 65 V VCEO supports translation up to 12 V rails; 100 MHz fT ensures sub-10 ns edge propagation for timing-critical control lines. |
Use Scenario: Activating 5 V or 12 V electromagnetic relays in PLC I/O modules and HVAC controllers. IC Role / Device Role / Timing Role: Saturated switch sinking relay coil current through collector to ground. Use Value: 100 mA IC rating matches typical 5 V relay coils (40–80 mA), and 200 mW Ptot avoids thermal shutdown during continuous duty cycles. |
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 |
|---|---|---|---|
| BC847BW,115 | Same SOT323 package and Group B hFE, but VCEO = 45 V and IC = 100 mA. | Limited to ≤45 V systems; unsuitable for 48 V bus monitoring or higher-voltage relay drivers. | Select when operating voltage is strictly ≤45 V and cost optimization is prioritized over voltage headroom. |
| MMBT3904LT1G | Same 60 V VCEO, 200 mA IC, but hFE = 100–300 (standard bin); SOT23 package (larger than SOT323). | Higher current capability but larger footprint; less suitable for ultra-dense layouts. | Choose when higher IC margin is needed and board area allows SOT23 placement. |
Compared with BC846BW,115, BC847BW,115 trades 20 V of collector-emitter voltage headroom for identical gain and size, while MMBT3904LT1G offers greater current capacity at the expense of board space and looser hFE tolerance - making BC846BW optimal for 48–65 V, space-constrained switching where gain consistency matters.
Availability
BC846BW,115 is available at Aetrix Electronics and suitable for industrial sensor interfaces, LED status indication, logic-level translation, and small-signal relay drivers requiring stable component supply across high-mix, low-volume production runs.
Supply support for BC846BW,115 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 leading global semiconductor manufacturer specializing in high-performance, energy-efficient discrete and logic devices, with core expertise in automotive-grade and industrial reliability standards.
The BC846xW series belongs to Nexperia's general-purpose transistor product line, engineered for robust performance in consumer, industrial, and communication equipment where small size, consistent gain, and thermal stability are essential.
FAQ
What is the exact hFE range for BC846BW,115 at IC = 10 µA?
At VCE = 5 V and IC = 10 µA, the BC846BW exhibits hFE = 290 (typical), with minimum and maximum values not specified in the datasheet for this condition. The guaranteed range of 200–450 applies only at IC = 2 mA per Table 2 and Table 8.
Can BC846BW,115 be used in linear amplifier configurations with emitter degeneration?
Yes - its hFE stability across IC (Fig. 6), low noise figure (2–10 dB at 1 kHz), and predictable VBE behavior (660 mV typ. at IC = 2 mA) make it suitable for Class-A preamplifier stages, provided thermal design accommodates Rth(j-a) = 625 K/W on FR4.
Is the SOT323 package of BC846BW,115 compatible with standard reflow soldering profiles?
Yes - Nexperia specifies the SOT323 footprint for JEDEC J-STD-020-compliant reflow, with recommended solder paste stencil apertures of 0.55 mm × 0.55 mm and land dimensions per Figure 11. Peak temperature must not exceed 260 °C for ≤10 seconds.
Does BC846BW,115 have automotive qualification?
No - the BC846xW series is explicitly designated as non-automotive qualified in Nexperia's legal disclaimers. It is not tested to AEC-Q101 and lacks automotive-specific reliability data, making it unsuitable for safety-critical vehicle subsystems.
BC846BW,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BC846xW
- Package/Case:
- SC-70, SOT-323
- 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:
- 200 @ 2mA, 5V
- Power - Max:
- 200 mW
- Frequency - Transition:
- 100MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
BC846BW,115 FAQ
1.How can I place an order for BC846BW,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BC846BW,115 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 BC846BW,115 reliable?
The price and inventory of BC846BW,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC846BW,115 is usually 5 days.
3.What payment methods are accepted for BC846BW,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC846BW,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC846BW,115?
BC846BW,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC846BW,115 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 BC846BW,115?
For technical support, including BC846BW,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC846BW,115 requirements.
6.How does Aetrix verify that BC846BW,115 is sourced from the original manufacturer or authorized distributors?
All BC846BW,115 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 BC846BW,115 meets industry standards.
7.What is the process for return or replacement of BC846BW,115?
All BC846BW,115 units undergo pre-shipment inspection (PSI). If there is an issue with BC846BW,115, 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 BC846BW,115 part is unused and in its original packaging.
Return procedure for BC846BW,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC846BW,115 Tags
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