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

Infineon Technologies BC847BWE6327

Name: BC847BWE6327
Brand: Infineon Technologies
SKU: BC847BWE6327
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BC847BWE6327

Manufacturer:: Infineon Technologies

Category:: Single Bipolar Transistors

Package:: SC-70, SOT-323

Datasheet:: BC847BWE6327.pdf

Description:: TRANS NPN 45V 0.1A PG-SOT323-3

Quantity:: RFQ Add To RFQ list

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Product details

Overview

BC847BWE6327 from Infineon Technologies is an NPN silicon general-purpose bipolar junction transistor (BJT) designed for audio-frequency input stages and driver circuits. It features a DC current gain (h_FE) of 200–450 at I_C = 2 mA, V_CE = 5 V; V_CEO = 45 V; V_CE(sat) ≤ 250 mV at I_C = 10 mA, I_B = 0.5 mA; and low noise (F = 1.2–4 dB) in the 30 Hz–15 kHz band - enabling high-fidelity signal amplification in compact consumer audio interfaces.

For engineers reviewing the BC847BWE6327 datasheet, BC847BWE6327 pinout, BC847BWE6327 application, or BC847BWE6327 equivalent, key selection criteria include its SOT-323 (SC-70) package footprint, AEC-Q101 qualification for automotive-grade reliability, RoHS-compliant lead-free construction, and verified performance in low-voltage, medium-current switching and linear amplification roles.

Technical Context

This transistor operates as a discrete NPN amplifier/switch with fixed emitter-base and collector-base junctions optimized for stable h_FE across temperature and bias. Its low V_CE(sat) and high f_T (250 MHz typical) support efficient small-signal amplification up to mid-VHF frequencies while maintaining low thermal resistance (R_thJS ≤ 90 K/W for BC847BF variant).

The device uses planar epitaxial silicon technology with diffusion-defined junctions and is characterized over −65 °C to +150 °C storage and operation ranges. Its complementary PNP counterparts (e.g., BC857B) enable matched-pair designs in push-pull output stages and differential amplifiers.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	45 V - Maximum safe collector-emitter voltage before breakdown in common-emitter configuration; defines usable supply headroom in 5–24 V rail applications.
h_FE (I_C = 2 mA)	200–450 - Confirmed DC current gain range for design margining in bias-stable amplifier stages without active feedback compensation.
V_CE(sat)	≤ 250 mV @ I_C = 10 mA, I_B = 0.5 mA - Ensures minimal conduction loss in low-side switch applications driving LEDs or logic inputs.
f_T	250 MHz typ. - Supports stable small-signal amplification up to ~100 MHz with predictable gain roll-off; sufficient for AF+RF front-end buffering.
C_cb	0.95 pF - Low collector-base capacitance minimizes Miller effect in high-gain CE configurations, preserving bandwidth stability.
Thermal R_thJS	≤ 90 K/W - Enables reliable 250 mW power dissipation at board-level soldering point temperatures ≤ 128 °C without forced cooling.
Noise figure	1.2–4 dB @ 1 kHz - Verified low-noise performance critical for microphone preamps and analog sensor signal conditioning paths.

Pinout & Package

BC847BWE6327 is housed in a surface-mount SOT-323 (SC-70) plastic package with three terminals: emitter, base, and collector. The package measures 2.1 mm × 1.25 mm × 0.95 mm and supports reflow soldering per JEDEC J-STD-020.

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	Current sink terminal	Connected to ground or low-impedance return path; polarity defines NPN operation and current flow direction.
2 (Base)	Control input node	Receives bias current to modulate collector current; requires series resistor for stable DC operating point setting.
3 (Collector)	Output current source	Delivers amplified or switched load current; connected to supply rail via load (e.g., resistor, LED, relay coil).

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive electronics use including engine control modules and body electronics under temperature cycling and humidity stress.
RoHS-compliant, Pb-free	Meets EU Directive 2011/65/EU; eliminates lead in solderability layers and die attach, supporting green manufacturing requirements.
Low V_CE(sat)	Guaranteed ≤ 250 mV enables >95% efficiency in 3.3 V logic-level switching applications without heat sinking.
High h_FE consistency	Group B binning ensures tight 200–450 spread at I_C = 2 mA, reducing need for individual circuit trimming in production.
Low-noise AF performance	Verified 1.2–4 dB noise figure between 30 Hz–15 kHz supports fidelity-critical audio preamplifier stages in portable devices.

Applications

Audio Input Stage

Automotive Sensor Interface

Use Scenario: Amplifying weak signals from electret microphones or piezoelectric sensors in battery-powered voice recorders.

IC Role / Device Role / Timing Role: NPN common-emitter preamplifier with fixed bias network and emitter degeneration resistor.

Use Value: Delivers ≥30 dB voltage gain with <4 dB noise figure and <1% THD at 1 kHz, preserving SNR in sub-100 µA quiescent current designs.

Use Scenario: Conditioning analog outputs from temperature or pressure sensors in vehicle cabin control units.

IC Role / Device Role / Timing Role: Low-drift signal buffer and level-shifter between sensor ICs and 12-bit ADC inputs.

Use Value: Stable h_FE over −40 °C to +125 °C ensures consistent gain calibration across automotive ambient conditions.

LED Driver

Logic-Level Translator

Use Scenario: Driving indicator LEDs from 3.3 V microcontroller GPIO pins in industrial HMIs.

IC Role / Device Role / Timing Role: Low-side saturated switch with base resistor integrated into PCB layout.

Use Value: V_CE(sat) ≤ 250 mV limits power loss to <2.5 mW per LED at 10 mA, eliminating thermal derating concerns.

Use Scenario: Translating 1.8 V logic outputs to 5 V TTL-compatible levels in mixed-voltage MCU peripherals.

IC Role / Device Role / Timing Role: Single-transistor level shifter in open-collector configuration with pull-up to 5 V rail.

Use Value: f_T ≥ 250 MHz ensures clean edge transitions up to 10 MHz clock rates without propagation delay skew.

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 (Nexperia)	Identical SOT-323 package and h_FE group B binning; same V_CEO, V_CE(sat), and f_T; differs only in tape-and-reel packaging code.	No functional difference; validated in identical automotive and consumer designs per AEC-Q101 test reports.	Select when sourcing from Nexperia's distribution channels or requiring alternate logistics traceability.
MMBT3904LT1G (ON Semiconductor)	Higher V_CEO (40 V vs. 45 V), lower h_FE min (100 vs. 200), and higher V_CE(sat) (300 mV max); otherwise matches pinout and package.	Suitable for non-critical switching but less ideal for low-noise AF amplification due to wider h_FE spread and higher noise floor.	Prefer for cost-sensitive, non-audio applications where gain consistency and noise are secondary to availability.

Compared with BC847BWE6327, BC847BW,115 offers identical electrical and thermal behavior with no design impact, while MMBT3904LT1G trades gain stability and noise performance for broader vendor availability and lower unit cost in non-precision roles.

Availability

BC847BWE6327 is available at Aetrix Electronics and suitable for automotive sensor interfaces, portable audio preamplifiers, and industrial LED driver circuits requiring stable component supply across multi-year production cycles.

Supply support for BC847BWE6327 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

Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive electronics, and industrial control ICs and discrete components.

The BC846–BC850 family was developed for high-reliability, low-noise analog signal conditioning in space-constrained automotive and consumer applications, emphasizing AEC-Q101 compliance and consistent parametric binning.

FAQ

Is BC847BWE6327 pin-compatible with BC847B in SOT-23?

No - BC847BWE6327 uses SOT-323 (SC-70), while BC847B uses SOT-23. Though both have identical pin 1–2–3 emitter–base–collector assignments, their footprints differ: SOT-323 is smaller (2.1 × 1.25 mm) and incompatible with SOT-23 land patterns. PCB redesign is required for substitution.

What is the maximum continuous collector current for BC847BWE6327?

The absolute maximum continuous collector current is 100 mA at T_A = 25 °C. Derating applies above 71 °C ambient: at 128 °C case temperature, maximum allowable I_C drops to ~60 mA to maintain P_tot ≤ 250 mW and prevent thermal runaway.

Does BC847BWE6327 support pulsed operation beyond its DC ratings?

Yes - it supports peak collector currents up to 200 mA for pulse widths ≤ 10 ms (duty cycle ≤ 2%). Permissible pulse load curves confirm P_tot(max)/P_tot(DC) = 2.5× at t_p = 1 ms, enabling brief surge handling in relay-driving or flash LED applications.

How does the BC847BWE6327 noise performance compare to BC849B?

BC847BWE6327 has a noise figure of 1.2–4 dB at 1 kHz, while BC849B (higher-voltage variant) specifies 1.2–4 dB only for BC849... and BC850... types - confirming equivalent low-noise capability. However, BC849B's lower V_CEO (30 V) makes it unsuitable for 45 V applications where BC847BWE6327 is rated.

BC847BWE6327 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

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

Packaging:: Bulk

Product Status:: Active

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 100 mA

Voltage - Collector Emitter Breakdown (Max):: 45 V

Vce Saturation (Max) @ Ib, Ic:: 600mV @ 5mA, 100mA

Current - Collector Cutoff (Max):: 15nA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 200 @ 2mA, 5V

Power - Max:: 250 mW

Frequency - Transition:: 250MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PG-SOT323-3

BC847BWE6327 FAQ

1.How can I place an order for BC847BWE6327 through Aetrix?

Please submit a Request for Quotation (RFQ) for BC847BWE6327 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 BC847BWE6327 reliable?

The price and inventory of BC847BWE6327 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC847BWE6327 is usually 5 days.

3.What payment methods are accepted for BC847BWE6327?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC847BWE6327 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BC847BWE6327?

BC847BWE6327 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BC847BWE6327 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 BC847BWE6327?

For technical support, including BC847BWE6327 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC847BWE6327 requirements.

6.How does Aetrix verify that BC847BWE6327 is sourced from the original manufacturer or authorized distributors?

All BC847BWE6327 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 BC847BWE6327 meets industry standards.

7.What is the process for return or replacement of BC847BWE6327?

All BC847BWE6327 units undergo pre-shipment inspection (PSI). If there is an issue with BC847BWE6327, 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 BC847BWE6327 part is unused and in its original packaging.

Return procedure for BC847BWE6327:

1.Submit a request within 90 days.

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

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