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Infineon Technologies BC850CWE6327HTSA1
- Part No.:
- BC850CWE6327HTSA1
- Manufacturer:
- Infineon Technologies
- Category:
- Single Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
BC850CWE6327HTSA1.pdf
- Description:
- TRANS NPN 45V 0.1A PG-SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:4,543
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Product details
Overview
BC850CWE6327HTSA1 from Infineon Technologies is an NPN silicon bipolar junction transistor designed for audio-frequency input stages and driver applications. It delivers high DC current gain (hFE = 420–520 at IC = 2 mA), low collector-emitter saturation voltage (VCE(sat) ≤ 250 mV at IC = 10 mA, IB = 0.5 mA), and low noise (F = 1.2–4 dB, Vn ≤ 0.135 µV in 10–50 Hz band), making it suitable for low-noise preamplifier circuits in automotive sensor interfaces.
For engineers reviewing the BC850CWE6327HTSA1 datasheet, BC850CWE6327HTSA1 pinout, BC850CWE6327HTSA1 application, or BC850CWE6327HTSA1 equivalent, key selection criteria include its AEC-Q101 qualification, SOT-323 (SC-70) package, hFE group C specification, VCEO = 45 V rating, and verified low-noise performance below 15 kHz - all critical for automotive-grade analog signal conditioning.
Technical Context
This transistor operates as a general-purpose NPN amplifier/driver with complementary PNP pairing available in BC856–BC860 series. Its design emphasizes stable hFE across IC = 10 µA to 100 mA, low VCE(sat) under medium drive, and controlled capacitance (Ccb = 0.95 pF, Ceb = 9 pF) to support bandwidth up to fT = 250 MHz at IC = 10 mA, VCE = 5 V.
Thermal performance is defined by RthJS ≤ 240 K/W (SOT-323), enabling operation up to Tj = 150 °C. The device meets Pb-free RoHS compliance and is qualified per AEC-Q101 stress test requirements for automotive electronics reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 45 V - Maximum safe collector-emitter voltage before breakdown in common-emitter configuration; supports 24 V automotive rail interfacing with margin. |
| hFE (IC = 2 mA) | 420–520 - High, tightly binned DC current gain enabling precise biasing and low-base-drive-current designs in linear amplifiers. |
| VCE(sat) | ≤250 mV @ IC=10 mA, IB=0.5 mA - Ensures minimal voltage drop and power loss in saturated switching or Class-A driver stages. |
| fT | 250 MHz - Enables stable small-signal amplification up to mid-VHF range; sufficient for wideband audio and sensor signal conditioning. |
| Noise figure | 1.2–4 dB @ 1 kHz - Confirmed low-noise performance critical for microphone preamps and precision analog front-ends. |
| Ccb / Ceb | 0.95 pF / 9 pF - Low parasitic capacitances preserve high-frequency gain and reduce Miller effect in common-emitter configurations. |
| Ptot | 250 mW @ TS ≤ 128 °C - Power dissipation limit defined for SOT-323 package; requires thermal pad layout per Infineon AN. |
Pinout & Package
BC850CWE6327HTSA1 is housed in a RoHS-compliant SOT-323 (SC-70) plastic surface-mount package with standard 3-pin configuration and gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | E | Current sink terminal; connected to ground or low-impedance return path in common-emitter amplifier topologies. |
| 2 (Base) | B | Control input; requires current-limited drive (typically 1–5% of IC) to maintain linear operation or saturation. |
| 3 (Collector) | C | Current source terminal; connects to load or next stage; voltage swing limited by VCEO = 45 V rating. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control modules and body electronics requiring extended temperature and reliability testing. |
| Low-noise operation | Equivalent noise voltage ≤0.135 µV (10–50 Hz) enables use in battery-powered sensor signal chains without added filtering. |
| High hFE group C binning | Guaranteed hFE ≥420 at IC = 2 mA ensures consistent gain matching across production lots for differential pair or current mirror designs. |
| SOT-323 footprint | 0.65 mm pitch, 2.1 × 1.25 × 0.95 mm body enables high-density PCB layouts while maintaining manufacturability on standard SMT lines. |
Applications
| Automotive Cabin Microphone Preamp | Industrial Temperature Sensor Amplifier |
|---|---|
Use Scenario: Amplifying weak AC-coupled signals from MEMS microphones in vehicle infotainment systems. IC Role / Device Role / Timing Role: NPN small-signal amplifier in common-emitter configuration with emitter degeneration for linearity. Use Value: Low 1/f noise (≤0.135 µV) and high hFE minimize required base bias current, reducing power consumption in always-on voice detection circuits. |
Use Scenario: Buffering and gain-setting for RTD or thermistor bridge outputs in HVAC control units. IC Role / Device Role / Timing Role: Transconductance amplifier stage converting resistance changes into stable voltage output. Use Value: Tight hFE binning (420–520) ensures predictable gain stability over –40 °C to +125 °C ambient, meeting ASIL-B functional safety margins. |
| LED Driver for Dashboard Backlight | Low-Power Relay Interface Circuit |
Use Scenario: Constant-current source driving white LEDs in instrument cluster backlighting. IC Role / Device Role / Timing Role: Saturated switch controlling LED string current via emitter-follower or common-emitter topology. Use Value: VCE(sat) ≤250 mV at IC = 10 mA reduces power loss and thermal rise in space-constrained dashboard assemblies. |
Use Scenario: Isolating MCU GPIO pins from 12 V relay coils in body control modules. IC Role / Device Role / Timing Role: Digital switch providing galvanic isolation and current gain between logic-level input and inductive load. Use Value: AEC-Q101 qualification ensures robustness against load dump transients and long-term vibration exposure in automotive harness environments. |
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 | VCEO = 45 V, hFE = 420–520 (same group C), but SOT-23 package (larger footprint, higher RthJA) | Less suitable for ultra-dense layouts; thermal resistance ~300 K/W vs. 240 K/W for SOT-323 | Select when board real estate allows larger package and legacy SOT-23 tooling is preferred. |
| MMBT5551 | VCEO = 160 V, hFE = 80–250 (wider spread), no AEC-Q101 qualification, TO-236AB (SOT-23) package | Higher voltage capability but unqualified for automotive; higher noise (F ≈ 5 dB) limits low-level analog use | Choose only for non-automotive industrial applications requiring >100 V breakdown and cost sensitivity over noise or qualification. |
Compared with BC847CW and MMBT5551, BC850CWE6327HTSA1 uniquely combines AEC-Q101 qualification, SOT-323 miniaturization, tight hFE binning, and sub-0.14 µV noise - making it the optimal choice for space-constrained, low-noise automotive analog signal paths where reliability and consistency are mandatory.
Availability
BC850CWE6327HTSA1 is available at Aetrix Electronics and suitable for automotive cabin electronics, industrial sensor interfaces, and LED backlighting systems requiring stable component supply and long-term lifecycle assurance.
Supply support for BC850CWE6327HTSA1 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 infrastructure.
This transistor belongs to Infineon's BC846–BC850 family of AEC-Q101-qualified NPN transistors engineered specifically for automotive signal amplification, sensor interfacing, and driver functions where low noise, gain consistency, and thermal reliability are essential.
FAQ
Is BC850CWE6327HTSA1 pin-compatible with BC847C variants?
Yes - BC850CWE6327HTSA1 uses the SOT-323 package with identical pinout (E-B-C) to BC847CW and BC847C. However, BC847C is offered in SOT-23 and SOT-323 variants; only the SOT-323 version (e.g., BC847CW) shares mechanical and electrical pin compatibility. Thermal and parasitic differences must be validated in layout.
What is the maximum operating junction temperature for continuous use?
The absolute maximum junction temperature is 150 °C, and continuous operation must ensure Tj remains below this limit. With RthJS ≤ 240 K/W and Ptot = 250 mW, the maximum allowable case temperature is 90 °C at full power - requiring appropriate PCB copper area and airflow per Infineon's thermal application notes.
Does this part support lead-free reflow soldering per JEDEC J-STD-020?
Yes - BC850CWE6327HTSA1 is RoHS-compliant and qualified for lead-free reflow soldering with peak temperatures up to 260 °C (per JEDEC J-STD-020D). The SOT-323 package passes MSL Level 1 classification, meaning unlimited floor life at ≤30 °C/60% RH when sealed in dry pack.
How does its noise performance compare to BC849C in audio applications?
BC850C offers lower equivalent noise voltage (≤0.135 µV, 10–50 Hz) than BC849C (≤0.18 µV), due to optimized epitaxial layer doping and geometry. This 25% reduction directly improves SNR in microphone preamps and active filters where 1/f noise dominates below 1 kHz.
BC850CWE6327HTSA1 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
BC850CWE6327HTSA1 FAQ
1.How can I place an order for BC850CWE6327HTSA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for BC850CWE6327HTSA1 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 BC850CWE6327HTSA1 reliable?
The price and inventory of BC850CWE6327HTSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC850CWE6327HTSA1 is usually 5 days.
3.What payment methods are accepted for BC850CWE6327HTSA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC850CWE6327HTSA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC850CWE6327HTSA1?
BC850CWE6327HTSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC850CWE6327HTSA1 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 BC850CWE6327HTSA1?
For technical support, including BC850CWE6327HTSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC850CWE6327HTSA1 requirements.
6.How does Aetrix verify that BC850CWE6327HTSA1 is sourced from the original manufacturer or authorized distributors?
All BC850CWE6327HTSA1 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 BC850CWE6327HTSA1 meets industry standards.
7.What is the process for return or replacement of BC850CWE6327HTSA1?
All BC850CWE6327HTSA1 units undergo pre-shipment inspection (PSI). If there is an issue with BC850CWE6327HTSA1, 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 BC850CWE6327HTSA1 part is unused and in its original packaging.
Return procedure for BC850CWE6327HTSA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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