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

Infineon Technologies BC850CWH6327XTSA1

Name: BC850CWH6327XTSA1
Brand: Infineon Technologies
SKU: BC850CWH6327XTSA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BC850CWH6327XTSA1

Manufacturer:: Infineon Technologies

Category:: Single Bipolar Transistors

Package:: SC-70, SOT-323

Datasheet:: BC850CWH6327XTSA1.pdf

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

Quantity:: RFQ Add To RFQ list

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Product details

Overview

BC850CWH6327XTSA1 from Infineon Technologies is an NPN silicon general-purpose bipolar junction transistor (BJT) designed for audio-frequency input stages and driver applications. It delivers high DC current gain (h_FE = 420–520 at I_C = 2 mA), low collector-emitter saturation voltage (V_CE(sat) ≤ 250 mV at I_C = 10 mA / I_B = 0.5 mA), and low noise (F = 1.2–4 dB, V_n ≤ 0.135 µV in 10–50 Hz band), making it suitable for low-noise preamplifier circuits in automotive sensor interfaces.

For engineers reviewing the BC850CWH6327XTSA1 datasheet, BC850CWH6327XTSA1 pinout, BC850CWH6327XTSA1 application, or BC850CWH6327XTSA1 equivalent, key selection criteria include its AEC-Q101 qualification, SOT-323 (SC-70) package, h_FE group C specification, 30 V V_CEO, and 100 mA I_C rating - all critical for automotive signal conditioning and industrial analog front-ends.

Technical Context

This transistor operates as a linear amplifying device in Class-A or Class-AB small-signal configurations, with verified h_FE grouping (C: 420–520 at I_C = 2 mA), f_T = 250 MHz typical, and C_cb = 0.95 pF at V_CB = 10 V. Its low V_CE(sat) and V_BE(sat) support efficient switching in low-power driver roles.

Designed for ambient temperatures up to +150 °C junction, it features thermal resistance R_thJS ≤ 240 K/W (SOT-23 variant) and meets RoHS compliance with Pb-free packaging. The BC850C variant is part of the BC846–BC850 family, with complementary PNP types BC856–BC860 available for push-pull designs.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	30 V - Maximum collector-emitter voltage before breakdown under open-base conditions; defines safe operating voltage in amplifier/driver stages.
h_FE (I_C = 2 mA)	420–520 - High DC current gain enables low-base-drive current design, reducing bias network power loss.
V_CE(sat)	≤250 mV @ I_C=10 mA/I_B=0.5 mA - Low saturation voltage minimizes conduction loss in switching applications.
f_T	250 MHz typ. - Transition frequency supports stable amplification up to mid-VHF range, relevant for RF biasing and wideband analog signal paths.
Noise Figure	1.2–4 dB @ I_C=200 µA - Confirmed low-noise performance in audio-band (30 Hz–15 kHz) and sensor interface applications.
Package	SOT-323 (SC-70) - Surface-mount 3-pin package with 1.3 mm × 2.1 mm footprint; optimized for space-constrained PCB layouts.
AEC-Q101 Qualified	Yes - Validated for automotive electronics per stress-test requirements including HTGB, HTRB, and temperature cycling.

Pinout & Package

SOT-323 (SC-70) plastic surface-mount package with gull-wing leads; moisture sensitivity level (MSL) 1, reflow-compatible per JEDEC J-STD-020.

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	E	Current sink terminal; connects to ground or low-impedance return path in common-emitter configuration.
2 (Base)	B	Control input; requires current-limited drive (typically via series resistor) to bias transistor into active/saturation region.
3 (Collector)	C	Current source terminal; connects to load (e.g., pull-up resistor, relay coil, or next-stage input) in amplification or switching roles.

Key Features

Feature	Design Value
High h_FE group C	Guaranteed 420–520 gain at I_C = 2 mA, enabling precise bias point control without trimming resistors.
Low-noise operation	Verified 0.135 µV equivalent noise voltage in 10–50 Hz band, supporting precision analog front-ends for pressure/temperature sensors.
AEC-Q101 qualification	Validated reliability for automotive under-hood and cabin modules, including thermal cycling and humidity testing.
Pb-free RoHS compliance	Meets EU Directive 2011/65/EU; compatible with lead-free reflow profiles and halogen-free board assembly processes.

Applications

Automotive Cabin Sensors

Industrial Analog Input Modules

Use Scenario: Signal amplification for piezoresistive pressure sensors in HVAC control units.

IC Role / Device Role / Timing Role: NPN BJT configured as common-emitter preamplifier with fixed-gain bias network.

Use Value: Low V_CE(sat) and 1.2 dB noise figure preserve SNR in millivolt-level sensor outputs under 12 V supply constraints.

Use Scenario: Current-to-voltage conversion stage in 4–20 mA loop receivers.

IC Role / Device Role / Timing Role: Linear amplifier in transimpedance configuration driving ADC reference buffer.

Use Value: Stable h_FE across temperature ensures consistent gain calibration over –40 °C to +105 °C industrial range.

Audio Signal Conditioning

Power Supply Enable Switching

Use Scenario: First-stage gain block in battery-powered portable audio codec inputs.

IC Role / Device Role / Timing Role: Low-noise small-signal amplifier with emitter degeneration for bandwidth control.

Use Value: 0.135 µV noise voltage and 250 MHz f_T enable clean amplification up to 20 kHz with minimal distortion.

Use Scenario: Low-side enable switch controlling 5 V logic rail for peripheral ICs.

IC Role / Device Role / Timing Role: Saturated switch with base resistor limiting I_B to ensure hard saturation at 100 mA load.

Use Value: V_CE(sat) ≤ 250 mV reduces power dissipation to <10 mW, eliminating need for heatsinking in compact modules.

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN small-signal transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BC847CW	V_CEO = 45 V (vs. 30 V); h_FE group C = 420–520 same; SOT-323 package identical.	Higher voltage headroom allows use in 24 V industrial systems where BC850C's 30 V rating is marginal.	Select BC847CW when system supply exceeds 18 V and higher V_CEO margin is required without changing layout.
MMBT3904LT1G	h_FE = 100–300 (lower max gain); V_CEO = 40 V; SOT-23 package (larger footprint than SOT-323).	Lower gain necessitates higher base drive; SOT-23 requires PCB redesign if replacing BC850C in space-constrained designs.	Choose MMBT3904LT1G only if legacy design uses SOT-23 or gain tolerance >300 is acceptable.

Compared with BC847CW and MMBT3904LT1G, BC850CWH6327XTSA1 offers the lowest noise and highest guaranteed h_FE in SOT-323, making it optimal for automotive sensor preamps where SNR and board area are critical.

Availability

BC850CWH6327XTSA1 is available at Aetrix Electronics and suitable for automotive cabin sensors, industrial analog input modules, audio signal conditioning, and power supply enable switching requiring stable component supply and AEC-Q101 assurance.

Supply support for BC850CWH6327XTSA1 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, with global manufacturing and quality certification to ISO/TS 16949.

The BC846–BC850 family targets cost-sensitive, high-reliability analog signal paths in automotive and industrial environments, emphasizing low noise, AEC-Q101 compliance, and tight h_FE binning for predictable circuit behavior.

FAQ

Is BC850CWH6327XTSA1 pin-compatible with BC847C variants?

Yes - both use identical SOT-323 (SC-70) package with E-B-C pinout (1=Emitter, 2=Base, 3=Collector). Mechanical and solder footprint compatibility is confirmed per Infineon's package drawings, though electrical differences (V_CEO, h_FE min/max) require schematic review before substitution.

What is the maximum continuous collector current at 100 °C ambient?

At T_A = 100 °C, derated I_C is 60 mA based on P_tot = 250 mW (SOT-323) and V_CE(sat) ≤ 250 mV. This assumes no additional heatsinking and adheres to the thermal resistance curve in Infineon's Application Note AN2010-06-28.

Does this transistor support pulsed operation beyond its DC ratings?

Yes - pulse operation up to I_C = 200 mA is allowed for t_p ≤ 10 ms (duty cycle ≤ 2%), per the permissible pulse load graph in the datasheet. Peak power must stay below P_tot(max) = 500 mW under those conditions.

How does the BC850C's noise performance compare to BC849C?

BC850C specifies lower equivalent noise voltage (0.135 µV vs. BC849C's 0.15 µV) and narrower noise figure range (1.2–4 dB vs. 1.5–4.5 dB) in the 10–50 Hz band, reflecting tighter process control for ultra-low-noise applications like MEMS sensor interfaces.

BC850CWH6327XTSA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

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

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

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:: 420 @ 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

BC850CWH6327XTSA1 FAQ

1.How can I place an order for BC850CWH6327XTSA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for BC850CWH6327XTSA1 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 BC850CWH6327XTSA1 reliable?

The price and inventory of BC850CWH6327XTSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC850CWH6327XTSA1 is usually 5 days.

3.What payment methods are accepted for BC850CWH6327XTSA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC850CWH6327XTSA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BC850CWH6327XTSA1?

BC850CWH6327XTSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BC850CWH6327XTSA1 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 BC850CWH6327XTSA1?

For technical support, including BC850CWH6327XTSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC850CWH6327XTSA1 requirements.

6.How does Aetrix verify that BC850CWH6327XTSA1 is sourced from the original manufacturer or authorized distributors?

All BC850CWH6327XTSA1 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 BC850CWH6327XTSA1 meets industry standards.

7.What is the process for return or replacement of BC850CWH6327XTSA1?

All BC850CWH6327XTSA1 units undergo pre-shipment inspection (PSI). If there is an issue with BC850CWH6327XTSA1, 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 BC850CWH6327XTSA1 part is unused and in its original packaging.

Return procedure for BC850CWH6327XTSA1:

1.Submit a request within 90 days.

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

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