My Inquiry
My Account
Nexperia USA Inc. BC847BW,115
- Part No.:
- BC847BW,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
BC847BW,115.pdf
- Description:
- TRANS NPN 45V 0.1A SOT-323
- Quantity:
- Payment:
- Shipping:
Inventory:108,658
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BC847BW,115 from Nexperia is a 45 V, 100 mA NPN general-purpose transistor in SOT323 (SC-70) package, designed for low-power switching and linear amplification in space-constrained PCBs. It delivers DC current gain (hFE) of 200–450 at VCE = 5 V and IC = 2 mA, with VCE(sat) ≤ 400 mV at IC = 100 mA / IB = 5 mA, and operates across –65 °C to +150 °C ambient range - commonly deployed in LED drivers and signal-level interface stages.
For engineers reviewing the BC847BW,115 datasheet, BC847BW,115 pinout, BC847BW,115 application, or BC847BW,115 equivalent, key selection criteria include its 290 typical hFE, 200 mW power dissipation on FR4 PCB, SOT323 thermal resistance of 625 K/W, and compatibility with reflow/wave soldering per JEDEC J-STD-020/001.
Technical Context
This NPN bipolar junction transistor uses planar epitaxial die construction with emitter-base diffusion optimized for stable hFE distribution across temperature. Its base-emitter junction exhibits a nominal VBE of 660 mV at IC = 10 mA and VCE = 5 V, decreasing by ~2 mV/K with rising junction temperature.
The device supports both active-mode amplification and saturated-switching operation, with transition frequency fT ≥ 100 MHz at VCE = 5 V and IC = 10 mA, and collector capacitance Cc ≤ 1.5 pF at VCB = 10 V - enabling use in low-noise audio preamps and 100 kHz–1 MHz digital logic interfacing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 45 V - Maximum safe collector-emitter voltage before breakdown under open-base condition; defines upper rail limit in 3.3 V/5 V/12 V switching circuits. |
| IC | 100 mA continuous - Absolute max DC collector current; supports driving small relays, LEDs, or logic gates without external heat sinking. |
| hFE | 200–450 at VCE = 5 V, IC = 2 mA - High and tightly binned DC current gain enables predictable base drive sizing in amplifier and switch designs. |
| VCE(sat) | ≤ 400 mV at IC = 100 mA, IB = 5 mA - Low saturation voltage minimizes conduction loss and self-heating in high-duty-cycle switching applications. |
| Rth(j-a) | 625 K/W on FR4 PCB - Thermal resistance determines junction temperature rise; at 100 mA and 200 mW dissipation, ΔTj ≈ 125 °C above ambient. |
| fT | ≥ 100 MHz - Transition frequency confirms suitability for RF bias networks, oscillator load stages, and fast digital signal conditioning up to ~10 MHz. |
Pinout & Package
SOT323 (SC-70) plastic surface-mounted package: 1.3 mm × 1.8 mm footprint, 0.95 mm height, 3-terminal leadframe with gull-wing terminations. Designed for automated placement and reflow soldering per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base (B) | Current-controlled input node; requires series resistor to limit IB and ensure saturation or linear operation per hFE bin. |
| 2 | Emitter (E) | Reference terminal for bias network; connected to ground or low-impedance return path to maintain stable VBE and thermal stability. |
| 3 | Collector (C) | Output current sink node; routed to load (e.g., LED anode, relay coil, pull-up resistor) with trace width sized for 100 mA continuous current. |
Key Features
| Feature | Design Value |
|---|---|
| Three hFE gain bins (W/AW/BW/CW) | Enables precise base-resistor selection across production lots - BW bin (200–450) balances drive margin and power efficiency in cost-sensitive designs. |
| Low VCE(sat) at high IC | 400 mV max at 100 mA ensures <100 mW conduction loss, reducing thermal stress on adjacent components in dense layouts. |
| JEDEC-standard SOT323 package | Guarantees compatibility with industry-standard pick-and-place nozzles, stencil apertures, and AOI inspection algorithms. |
| 150 °C maximum junction temperature | Supports operation in industrial enclosures or near heat-generating ICs without derating below full IC rating. |
Applications
| LED Current Switching | Microcontroller GPIO Interface |
|---|---|
|
Use Scenario: Driving discrete indicator LEDs or low-current backlight segments from 3.3 V or 5 V microcontroller outputs. IC Role / Device Role / Timing Role: NPN switch operating in saturation mode, translating logic-high GPIO to grounded LED cathode path. Use Value: VCE(sat) ≤ 400 mV ensures >95% of supply voltage reaches LED forward drop, maximizing brightness control resolution. |
Use Scenario: Level-shifting and current boosting between 1.8 V/3.3 V logic families or isolating MCU pins from higher-voltage peripherals. IC Role / Device Role / Timing Role: Active-low buffer with inverted output; provides 10× current gain to drive optocouplers or MOSFET gates. Use Value: hFE ≥ 200 allows 5 µA GPIO output to reliably switch 100 µA loads, eliminating need for dedicated level translators. |
| Audio Signal Amplification | Power Supply Enable Control |
|
Use Scenario: Low-noise preamplifier stage for electret microphone signals or sensor analog outputs in portable devices. IC Role / Device Role / Timing Role: Common-emitter amplifier biased in active region; configured with emitter degeneration for linearity. Use Value: NF ≤ 10 dB at 1 kHz and IC = 200 µA enables SNR > 60 dB in battery-powered audio front-ends. |
Use Scenario: Enabling/disabling secondary voltage rails (e.g., 3.3 V LDO output) via MCU-controlled power sequencing. IC Role / Device Role / Timing Role: High-side or low-side enable switch controlling base of PNP/MOSFET pass element. Use Value: 45 V VCEO headroom accommodates 24 V auxiliary rails while maintaining safe margin against transients. |
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 |
|---|---|---|---|
| BC847B,115 | Same hFE bin (200–450), but in larger SOT23 package (2.9 mm × 1.3 mm); Rth(j-a) = 300 K/W vs. 625 K/W. | Better thermal performance at >50 mA continuous, but occupies 2.5× more board area than SOT323. | Select when thermal margin is critical and PCB real estate permits larger footprint. |
| MMBT3904LT1G | hFE = 100–300 (lower min/max), VCEO = 40 V, same SOT23 package; not SOT323-compatible. | Lower gain consistency and reduced voltage margin; widely available but less suitable for precision biasing. | Choose only if legacy design reuse or distributor stock dictates substitution with tolerance for wider hFE variation. |
Compared with BC847B,115, the BC847BW,115 trades thermal efficiency for ultra-compact size - ideal for wearables and IoT sensors - while MMBT3904LT1G offers broader availability but sacrifices gain stability and voltage headroom required in industrial controls.
Availability
BC847BW,115 is available at Aetrix Electronics and suitable for LED driver modules, microcontroller interface circuits, audio preamplifiers, and power rail enable functions requiring stable component supply across high-mix, low-volume production runs.
Supply support for BC847BW,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 global semiconductor expert focused on high-volume, high-reliability standard logic, discrete, and MOSFET solutions - spun off from Philips in 2017 and headquartered in Nijmegen, Netherlands.
The BC847xW series targets cost-sensitive, space-constrained applications in consumer electronics and industrial controls where consistent gain binning, JEDEC-compliant packaging, and wide temperature operation are essential.
FAQ
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 for continuous DC operation, IB must be limited to ensure junction temperature stays within 150 °C. At IC = 100 mA and hFE = 290 (typical), IB ≈ 345 µA - well within safe limits. Derating is required only above 25 °C ambient due to Rth(j-a) = 625 K/W.
Can BC847BW,115 replace BC847CW in a circuit?
No - BC847CW has hFE = 420–800, significantly higher than BC847BW's 200–450. Substituting without adjusting base bias resistors will cause overdrive in saturation or cutoff in active mode. The marking code "1F%" (BW) vs. "1G%" (CW) is physically distinct and not interchangeable without circuit validation.
Is BC847BW,115 qualified for automotive applications?
No - this part is explicitly marked non-automotive qualified per Nexperia's revision history (Rev. 13, July 2022). It lacks AEC-Q101 stress testing and automotive-grade traceability. For automotive use, select the BC847BW-Q series, which undergoes extended temperature cycling, HTOL, and ESD qualification per AEC standards.
What is the recommended solder profile for SOT323 reflow?
Per Nexperia's data sheet (Fig. 15), use JEDEC J-STD-020-compliant reflow: peak temperature 260 °C max, time above liquidus 60–150 s, ramp-up rate ≤ 3 °C/s. The SOT323 footprint requires 0.55 mm × 1.325 mm solder paste apertures per pad, with 0.6 mm land width and 2.35 mm total occupied length - verified for void-free joints on FR4 with 35 µm copper.
BC847BW,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BC847xW
- 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):
- 45 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
BC847BW,115 FAQ
1.How can I place an order for BC847BW,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BC847BW,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 BC847BW,115 reliable?
The price and inventory of BC847BW,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC847BW,115 is usually 5 days.
3.What payment methods are accepted for BC847BW,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC847BW,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC847BW,115?
BC847BW,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC847BW,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 BC847BW,115?
For technical support, including BC847BW,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC847BW,115 requirements.
6.How does Aetrix verify that BC847BW,115 is sourced from the original manufacturer or authorized distributors?
All BC847BW,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 BC847BW,115 meets industry standards.
7.What is the process for return or replacement of BC847BW,115?
All BC847BW,115 units undergo pre-shipment inspection (PSI). If there is an issue with BC847BW,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 BC847BW,115 part is unused and in its original packaging.
Return procedure for BC847BW,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC847BW,115 Tags
-
MMBT3906LT1G
onsemi
-
MMBT3904-7-F
Diodes Incorporated
-
MMBT3904LT1G
onsemi
-
MMBT3906-7-F
Diodes Incorporated
-
MMBT3904-TP
Micro Commercial Co
-
MMBT2222A-7-F
Diodes Incorporated
-
BC846BLT1G
onsemi
-
BC847B,215
Nexperia USA Inc.
-
SMMBT3904LT1G
onsemi
-
MMBT2222A-TP
Micro Commercial Co
-
MMBTA06LT1G
onsemi
-
MMBT2222ALT1G
onsemi
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
