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Infineon Technologies BC846BWE6327
- Part No.:
- BC846BWE6327
- Manufacturer:
- Infineon Technologies
- Category:
- Single Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
BC846BWE6327.pdf
- Description:
- TRANS NPN 65V 0.1A SOT-323
- Quantity:
- Payment:
- Shipping:
Inventory:662,900
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Product details
Overview
BC846BWE6327 from Infineon Technologies is an NPN silicon general-purpose bipolar junction transistor (BJT) designed for audio-frequency input stages and driver circuits. It delivers high DC current gain (hFE = 200–450 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 at 1 kHz) - enabling precision amplification in battery-powered sensor interfaces and automotive signal conditioning modules.
For engineers reviewing the BC846BWE6327 datasheet, BC846BWE6327 pinout, BC846BWE6327 application, or BC846BWE6327 equivalent, key selection criteria include its AEC-Q101 qualification, SOT-323 (SC-70) package thermal resistance (RthJS ≤ 105 K/W), VCEO = 65 V rating, and hFE group B specification - critical for stable biasing in low-power analog front-ends and discrete amplifier stages.
Technical Context
This transistor operates as a linear active-mode amplifier or saturated switch in low-voltage, low-current signal paths. Its hFE grouping (B: 200–450 at IC = 2 mA) ensures predictable DC bias stability across temperature, while fT = 250 MHz supports wideband AF response up to 15 kHz with minimal phase distortion.
The device features complementary PNP counterparts (BC856–BC860 series), enabling push-pull configurations. Its RoHS-compliant SOT-323 package provides validated thermal performance (Ptot = 250 mW at TS ≤ 124 °C) and meets automotive reliability requirements per AEC-Q101 stress testing protocols.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 65 V - supports rail-to-rail operation in 48 V automotive subsystems and 24 V industrial control inputs without breakdown risk. |
| hFE (IC = 2 mA) | 200–450 - enables precise base-current-limited biasing in fixed-gain preamplifier stages with <±5% gain variation across production lots. |
| VCE(sat) | ≤250 mV at IC/IB = 10 mA/0.5 mA - minimizes power loss and self-heating in switching applications like LED drivers and relay interface logic. |
| fT | 250 MHz - ensures flat frequency response and low phase shift up to 15 kHz, meeting audio fidelity requirements for microphone preamps and sensor signal chains. |
| Noise Figure | 1.2–4 dB at 1 kHz - allows use in low-level analog signal amplification where SNR degradation must remain below 0.5 dB in 200 Hz–15 kHz bandwidths. |
| RthJS | ≤105 K/W - permits continuous 250 mW dissipation at case temperatures up to 124 °C, supporting operation in sealed enclosures without forced airflow. |
Pinout & Package
BC846BWE6327 is housed in a RoHS-compliant SOT-323 (SC-70) plastic surface-mount package with gull-wing leads, optimized for automated placement and thermal management in space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Current sink terminal | Provides low-impedance return path; requires direct connection to ground or negative rail for stable biasing in common-emitter configurations. |
| 2 (Base) | Control input | Accepts current-limited drive (typically 1–10 µA for linear operation); sensitive to ESD - requires series resistor ≥1 kΩ in digital-switching applications. |
| 3 (Collector) | Current source terminal | Delivers amplified output current; connects to load or next-stage input; voltage swing limited by VCEO = 65 V and thermal derating above 124 °C case temperature. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive under-hood environments including temperature cycling (−40 °C to +125 °C), humidity, and mechanical shock per JEDEC standards. |
| Low-noise AF performance | F = 1.2–4 dB at 1 kHz with 200 Hz–15 kHz bandwidth - suitable for microphone preamplifiers and piezoelectric sensor interfaces requiring <10 µV RMS noise floor. |
| High hFE consistency | Group B binning (200–450) reduces need for external feedback trimming in discrete gain stages, lowering BOM count in cost-sensitive consumer electronics. |
| Low VCE(sat) | ≤250 mV at IC = 10 mA - enables >95% efficiency in 3.3 V logic-level switching applications such as GPIO-driven indicator LEDs and small-signal relays. |
Applications
| Automotive Cabin Sensors | Industrial Current Monitoring |
|---|---|
|
Use Scenario: Amplifying millivolt-level signals from thermistors and Hall-effect sensors in HVAC and seat occupancy modules. IC Role / Device Role / Timing Role: Discrete NPN amplifier in common-emitter configuration providing 20–40 dB voltage gain with DC-coupled bias. Use Value: AEC-Q101 qualification ensures long-term reliability at 105 °C ambient; low noise preserves signal integrity for 12-bit ADC digitization. |
Use Scenario: Shunt-based current sensing in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Transconductance stage converting shunt voltage to proportional collector current for isolation amplifier input. Use Value: Tight hFE tolerance (200–450) enables ±1% full-scale accuracy without calibration; VCEO = 65 V withstands transient surges on 24 V field wiring. |
| Portable Audio Preamps | Medical Vital Sign Front-Ends |
|
Use Scenario: First-stage amplification of electret microphone outputs in hearing aids and voice recorders. IC Role / Device Role / Timing Role: Low-noise common-emitter amplifier biased at IC = 200 µA for optimal noise figure and battery life. Use Value: 1.2 dB typical noise figure at 1 kHz ensures >70 dB SNR in 3 kHz audio bandwidth; SOT-323 footprint saves board area in ultra-compact designs. |
Use Scenario: Signal conditioning for photoplethysmography (PPG) and ECG electrodes in wearable monitors. IC Role / Device Role / Timing Role: High-input-impedance emitter-follower buffer isolating passive sensor elements from downstream instrumentation amplifiers. Use Value: hFE ≥200 guarantees stable current gain over body temperature range (32–42 °C); RoHS compliance meets ISO 13485 medical device material requirements. |
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 |
|---|---|---|---|
| BC846BW,115 (Nexperia) | Same SOT-323 package and hFE group B (200–450), but VCEO = 65 V and RthJS = 105 K/W match exactly; no AEC-Q101 certification. | Qualified for industrial and consumer use only; not approved for automotive safety-critical systems. | Select when AEC-Q101 is not required and cost optimization is prioritized over automotive qualification. |
| MMBT3904LT1G (ON Semiconductor) | VCEO = 40 V (lower), hFE = 100–300 (wider spread), RthJS = 270 K/W (higher thermal resistance), same SOT-23 package. | Not suitable for 48 V automotive rails or high-temperature (>85 °C) industrial enclosures due to lower voltage and thermal limits. | Choose only for 3.3/5 V logic-level switching where VCEO margin and thermal headroom are non-critical. |
Compared with BC846BWE6327, BC846BW,115 offers identical electrical and thermal specs but lacks automotive qualification, while MMBT3904LT1G trades voltage headroom and thermal robustness for broader commercial availability - making BC846BWE6327 the sole choice for AEC-Q101–mandated designs requiring 65 V operation and 124 °C case temperature capability.
Availability
BC846BWE6327 is available at Aetrix Electronics and suitable for automotive cabin electronics, industrial current sensing, portable audio preamplifiers, and medical vital sign monitoring systems requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for BC846BWE6327 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 certifications including IATF 16949.
The BC846...-BC850... series targets high-reliability discrete signal conditioning in automotive and industrial environments, emphasizing AEC-Q101 qualification, low-noise AF performance, and thermal robustness in miniature packages.
FAQ
Is BC846BWE6327 pin-compatible with BC847B variants?
No - BC846BWE6327 uses SOT-323 (SC-70) packaging with 1–2–3 pinout (E–B–C), while BC847B variants are offered in SOT-23 (E–C–B) and TSFP-3 (E–B–C) packages with different lead pitch and thermal profiles. Mechanical and thermal mismatch prevents direct substitution without PCB redesign.
What is the maximum operating temperature for continuous DC operation?
The junction temperature limit is 150 °C, but continuous DC operation is constrained by package thermal resistance: at TS = 124 °C, Ptot = 250 mW is guaranteed. Exceeding 124 °C case temperature requires derating per the Ptot vs. TS curve in Figure 8 of the datasheet, down to zero dissipation at 150 °C.
Does BC846BWE6327 support pulsed operation beyond its DC ratings?
Yes - pulse operation up to 200 mA peak (ICM) is allowed for tp ≤ 10 ms with duty cycle D ≤ 2%, per datasheet Section 3. Pulse derating follows the Ptot(max)/Ptot(DC) vs. tp curve (Figure EHP00362), enabling brief high-current events like solenoid actuation triggers without thermal runaway.
How does the hFE group B specification impact circuit design?
Group B guarantees hFE between 200 and 450 at IC = 2 mA and VCE = 5 V, allowing designers to set base resistors for worst-case gain (200) while retaining margin for best-case (450). This eliminates need for post-production gain binning or feedback trimming in linear amplifier stages.
BC846BWE6327 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):
- 65 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:
- 330 mW
- Frequency - Transition:
- 250MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
BC846BWE6327 FAQ
1.How can I place an order for BC846BWE6327 through Aetrix?
Please submit a Request for Quotation (RFQ) for BC846BWE6327 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 BC846BWE6327 reliable?
The price and inventory of BC846BWE6327 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC846BWE6327 is usually 5 days.
3.What payment methods are accepted for BC846BWE6327?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC846BWE6327 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC846BWE6327?
BC846BWE6327 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC846BWE6327 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 BC846BWE6327?
For technical support, including BC846BWE6327 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC846BWE6327 requirements.
6.How does Aetrix verify that BC846BWE6327 is sourced from the original manufacturer or authorized distributors?
All BC846BWE6327 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 BC846BWE6327 meets industry standards.
7.What is the process for return or replacement of BC846BWE6327?
All BC846BWE6327 units undergo pre-shipment inspection (PSI). If there is an issue with BC846BWE6327, 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 BC846BWE6327 part is unused and in its original packaging.
Return procedure for BC846BWE6327:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC846BWE6327 Tags
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MMBT3904-7-F
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MMBT3904-TP
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MMBT2222A-7-F
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BC847B,215
Nexperia USA Inc.
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