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Home > Products > Discrete Semiconductor Products > Transistors > Bipolar (BJT) > Single Bipolar Transistors

Nexperia USA Inc. BC847CW/ZLX

Name: BC847CW/ZLX
Brand: Nexperia USA Inc.
SKU: BC847CW/ZLX
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BC847CW/ZLX

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

Package:: SC-70, SOT-323

Datasheet:: BC847CW/ZLX.pdf

Description:: TRANS SOT323

Quantity:: RFQ Add To RFQ list

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Inventory:6,352

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Product details

Overview

BC847CW/ZLX from Nexperia is an NPN general-purpose transistor in SOT323 (SC-70) package, rated for 45 V V_CEO, 100 mA I_C, and DC current gain (h_FE) of 420–800 at V_CE = 5 V and I_C = 2 mA. It serves as a low-power switching and amplification device in compact consumer and industrial signal-path circuits.

For engineers reviewing the BC847CW/ZLX datasheet, BC847CW/ZLX pinout, BC847CW/ZLX application, or BC847CW/ZLX equivalent, key selection criteria include its high-gain variant within the BC847xW series, SOT323 thermal performance (R_th(j-a) = 625 K/W), and verified suitability for low-current biasing, level-shifting, and discrete logic interface functions.

Technical Context

This transistor operates as a silicon-based NPN bipolar junction device with open-base collector-emitter breakdown voltage of 45 V and emitter-base breakdown voltage of 6 V. Its h_FE range (420–800) is specified under tightly controlled conditions (V_CE = 5 V, I_C = 2 mA), distinguishing it from lower-gain variants like BC847BW (200–450) and BC847AW (110–220).

Thermal behavior is defined for FR4 PCB mounting: total power dissipation is limited to 200 mW at T_amb ≤ 25 °C, with junction temperature capped at 150 °C. Saturation performance includes V_CE(sat) ≤ 400 mV at I_C = 100 mA / I_B = 5 mA and V_BE(sat) ≤ 900 mV under same conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	45 V - Maximum safe collector-emitter voltage with base open; defines upper rail limit in switch-mode operation.
I_C	100 mA - Continuous DC collector current rating; sets load-driving capacity in linear or saturated regions.
h_FE	420–800 - DC current gain at V_CE = 5 V, I_C = 2 mA; enables precise base-current sizing for predictable switching thresholds.
V_CE(sat)	≤ 400 mV - Collector-emitter saturation voltage at I_C = 100 mA / I_B = 5 mA; determines conduction loss and heat generation in on-state.
R_th(j-a)	625 K/W - Junction-to-ambient thermal resistance on standard FR4 PCB; informs derating requirements above 25 °C ambient.
f_T	100 MHz - Transition frequency at V_CE = 5 V, I_C = 10 mA; supports small-signal amplification up to low-VHF band.
C_c	1.5 pF - Collector capacitance at V_CB = 10 V; impacts high-frequency response and switching speed in capacitive-loaded stages.

Pinout & Package

SOT323 (SC-70) plastic surface-mounted package: ultra-compact 3-lead outline with 0.65 mm pitch, 1.3 mm × 1.8 mm footprint, and 0.95 mm max height - optimized for space-constrained PCB layouts and reflow assembly.

Pin	Circuit Role	Design Meaning
1	Base (B)	Control terminal; requires current-limited drive (e.g., via series resistor) to achieve target h_FE-based collector current.
2	Emitter (E)	Reference node for biasing; connected to ground or low-impedance return path to establish proper V_BE and current flow direction.
3	Collector (C)	Output terminal; handles switched load current up to 100 mA; polarity-sensitive connection to positive supply or pull-up network.

Key Features

Feature	Design Value
High DC current gain	h_FE = 420–800 ensures minimal base drive current (e.g., ~2.4 µA for 1 mA I_C), reducing MCU GPIO loading.
SOT323 package	0.65 mm lead pitch and 1.3 mm × 1.8 mm footprint enable dense routing and compatibility with 0201-class placement equipment.
Low V_CE(sat)	≤ 400 mV at full 100 mA load minimizes power loss (≤ 40 mW) and self-heating in battery-powered or thermally constrained designs.
Wide operating temperature	Rated from –65 °C to +150 °C junction temperature supports deployment in industrial control panels and automotive cabin modules.
Verified reliability	Non-automotive qualified per Rev. 13 (2022); meets JEDEC JESD22-A108 stress testing for 1000+ hours at 125 °C storage life.

Applications

LED Driver Circuit

Microcontroller GPIO Expander

Use Scenario: Driving single-color indicator LEDs from 3.3 V or 5 V microcontroller outputs with current limiting.

IC Role / Device Role / Timing Role: Discrete NPN switch controlling LED anode/cathode current path; no timing function.

Use Value: High h_FE allows direct drive from low-current GPIO pins (e.g., 4 mA STM32 output) without external buffer, reducing BOM count.

Use Scenario: Level-shifting and current boosting for interfacing legacy 5 V peripherals with modern 3.3 V MCUs.

IC Role / Device Role / Timing Role: Active-low/open-collector translator enabling bidirectional signal conditioning without voltage conflict.

Use Value: V_CEO = 45 V safely isolates 5 V bus from 3.3 V core; V_BE(sat) ≤ 900 mV ensures clean logic-low assertion below 1 V threshold.

Small-Signal Amplifier Stage

Power Supply Enable Switch

Use Scenario: Low-noise preamplification of sensor signals (e.g., thermistor, photodiode) in portable instrumentation.

IC Role / Device Role / Timing Role: Common-emitter amplifier with fixed bias network; bandwidth limited by f_T = 100 MHz and C_c = 1.5 pF.

Use Value: NF = 2–10 dB at 1 kHz enables sub-µV signal recovery; h_FE stability across –55 °C to +150 °C maintains gain consistency in field-deployed units.

Use Scenario: Enabling/disabling auxiliary rails (e.g., 3.3 V LDO input) using MCU-controlled high-side or low-side switch.

IC Role / Device Role / Timing Role: Low-side switch placing load between V_CC and collector; base driven by active-high enable signal.

Use Value: I_C = 100 mA rating supports typical LDO quiescent + load currents; R_th(j-a) = 625 K/W permits >100 mW dissipation with minimal heatsinking.

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
BC847CMTF	Same h_FE range (420–800) and SOT323 package, but marked "MTF" indicates different tape-and-reel packaging and RoHS-compliant plating.	No functional difference; identical electrical specs and thermal behavior - suitable for drop-in replacement where packaging logistics allow.	Select when sourcing from ON Semiconductor distribution channels or requiring alternate reel configuration.
MMBT3904LT1G	Lower h_FE (100–300), higher V_CEO (40 V), and slightly higher V_CE(sat) (300 mV typ. at 10 mA). Same SOT23 footprint (not pin-compatible with SOT323).	Requires PCB redesign due to larger SOT23 package and different pinout; unsuitable for space-constrained SOT323 layouts.	Choose only if board layout accommodates SOT23 and design tolerates reduced gain margin and higher saturation loss.

Compared with BC847CW/ZLX, BC847CMTF offers identical performance in a logistically distinct reel format, while MMBT3904LT1G demands mechanical redesign and sacrifices gain headroom - making BC847CW/ZLX optimal for high-density, high-gain, SOT323-constrained designs.

Availability

BC847CW/ZLX is available at Aetrix Electronics and suitable for LED driver circuits, microcontroller GPIO expansion, small-signal amplification, and power supply enable switching requiring stable component supply and consistent parametric performance across production batches.

Supply support for BC847CW/ZLX 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 essential efficiency technologies, delivering high-performance, reliable discrete and logic devices for mass-market electronics.

The BC847xW series targets cost-sensitive, space-constrained applications in consumer, industrial, and computing systems where proven reliability, tight gain binning, and SOT323 miniaturization are critical.

FAQ

What is the maximum continuous collector current for BC847CW/ZLX?

The absolute maximum continuous collector current is 100 mA at T_amb ≤ 25 °C on a standard FR4 PCB. Derating is required above 25 °C ambient per the thermal resistance curve (R_th(j-a) = 625 K/W); at 70 °C ambient, maximum usable I_C drops to approximately 65 mA to maintain T_j ≤ 150 °C.

Is BC847CW/ZLX suitable for automotive applications?

No - BC847CW/ZLX is explicitly non-automotive qualified per Nexperia's Rev. 13 datasheet (July 2022). It lacks AEC-Q101 qualification, automotive-grade screening, and extended temperature validation. For automotive use, select Nexperia's BC847BQ series or equivalent AEC-Q101-certified parts.

How does the h_FE of BC847CW/ZLX compare to BC847BW?

BC847CW/ZLX has h_FE = 420–800 at V_CE = 5 V, I_C = 2 mA, whereas BC847BW is binned 200–450 under identical conditions. This 2× higher minimum gain enables more robust biasing in temperature-varying environments and reduces sensitivity to base-resistor tolerance in switching designs.

Can BC847CW/ZLX replace BC847C in SOT23 packages?

No - BC847CW/ZLX uses SOT323 (SC-70), which is physically smaller than SOT23 and has different pin spacing (0.65 mm vs. 1.9 mm) and pinout orientation. Direct replacement would require PCB redesign. Electrical equivalence does not override mechanical incompatibility in surface-mount assembly.

BC847CW/ZLX Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: SC-70, SOT-323

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Transistor Type:: -

Current - Collector (Ic) (Max):: -

Voltage - Collector Emitter Breakdown (Max):: -

Vce Saturation (Max) @ Ib, Ic:: -

Current - Collector Cutoff (Max):: -

DC Current Gain (hFE) (Min) @ Ic, Vce:: -

Power - Max:: -

Frequency - Transition:: -

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-323

BC847CW/ZLX FAQ

1.How can I place an order for BC847CW/ZLX through Aetrix?

Please submit a Request for Quotation (RFQ) for BC847CW/ZLX 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 BC847CW/ZLX reliable?

The price and inventory of BC847CW/ZLX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC847CW/ZLX is usually 5 days.

3.What payment methods are accepted for BC847CW/ZLX?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC847CW/ZLX transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BC847CW/ZLX?

BC847CW/ZLX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BC847CW/ZLX 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 BC847CW/ZLX?

For technical support, including BC847CW/ZLX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC847CW/ZLX requirements.

6.How does Aetrix verify that BC847CW/ZLX is sourced from the original manufacturer or authorized distributors?

All BC847CW/ZLX 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 BC847CW/ZLX meets industry standards.

7.What is the process for return or replacement of BC847CW/ZLX?

All BC847CW/ZLX units undergo pre-shipment inspection (PSI). If there is an issue with BC847CW/ZLX, 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 BC847CW/ZLX part is unused and in its original packaging.

Return procedure for BC847CW/ZLX:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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