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Infineon Technologies BC846AE6327
- Part No.:
- BC846AE6327
- Manufacturer:
- Infineon Technologies
- Category:
- Single Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BC846AE6327.pdf
- Description:
- TRANS NPN 45V 0.1A PG-SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:357,000
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Product details
Overview
BC846AE6327 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 (hFE = 110–220 at IC = 10 µA–2 mA), low 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 the 30 Hz–15 kHz band. It is qualified to AEC-Q101 and housed in a Pb-free SOT23 package.
For engineers reviewing the BC846AE6327 datasheet, BC846AE6327 pinout, BC846AE6327 application, or BC846AE6327 equivalent, key selection criteria include its VCEO = 65 V rating, hFE group A classification, thermal resistance RthJS ≤ 240 K/W, and suitability for low-noise AF amplification and switching in automotive and industrial signal conditioning circuits.
Technical Context
This transistor operates as a linear amplifier or saturated switch in analog front-end and interface driver stages. Its hFE group A specification ensures predictable gain matching across production lots, while its low VBE(sat) (700–770 mV) and VCE(sat) support efficient biasing in low-voltage rail designs.
The device exhibits fT = 250 MHz typical at IC = 10 mA/VCE = 5 V, enabling stable operation well beyond audio bandwidth. Its Ccb = 0.95 pF and Ceb = 9 pF values minimize Miller effect and input loading in high-gain configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 65 V - Supports operation in 48 V and 60 V automotive and industrial supply rails without breakdown risk. |
| hFE (min/typ/max) | 110 / 200 / 420 at IC = 10 µA - Enables precise bias design with guaranteed minimum gain for stable small-signal amplification. |
| VCE(sat) | ≤250 mV at IC = 10 mA/IB = 0.5 mA - Reduces conduction loss and self-heating in switching applications. |
| fT | 250 MHz typical - Ensures adequate bandwidth margin for audio and low-speed digital signal buffering. |
| Noise Figure | 1.2–4 dB at IC = 200 µA - Meets low-noise requirements for microphone preamps and sensor signal conditioning. |
| RthJS | ≤240 K/W - Allows direct thermal modeling from junction to solder point for PCB layout optimization. |
Pinout & Package
BC846AE6327 is supplied in the standard SOT23 surface-mount package (3-pin, JEDEC TO-236AB), optimized for automated assembly and thermal performance on FR-4 PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Current sink terminal | Provides low-impedance return path; must be connected to ground or negative rail for common-emitter configuration. |
| 2 (Base) | Control input | Accepts current-limited drive (IB ≤ 5 mA) to achieve saturation; requires series resistor for bias stability. |
| 3 (Collector) | Current source terminal | Delivers amplified output current; connects to load and positive supply via pull-up or active circuitry. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics use, including under-hood temperature cycling and humidity exposure. |
| Low-noise operation | F ≤ 4 dB and Vn ≤ 0.135 µV enable clean signal amplification in sensor interfaces and audio paths. |
| Pb-free RoHS compliance | Meets EU Directive 2011/65/EU without exemptions; compatible with lead-free reflow profiles (peak 260 °C). |
| High hFE consistency | Group A binning (hFE = 110–220) reduces need for gain-trimming resistors in production designs. |
Applications
| Automotive Cabin Audio Preamp | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Amplifying low-level signals from MEMS microphones or piezoelectric sensors in vehicle infotainment systems. IC Role / Device Role / Timing Role: NPN BJT configured as common-emitter voltage amplifier with emitter degeneration for linearity. Use Value: Low 1.2 dB noise figure and 65 V VCEO ensure fidelity and reliability across 12 V–48 V battery architectures. |
Use Scenario: Buffering and level-shifting analog outputs from RTD or thermistor bridges in PLC analog input modules. IC Role / Device Role / Timing Role: Linear amplifier stage providing gain and impedance transformation before ADC sampling. Use Value: Stable hFE and low VCE(sat) minimize offset drift and power dissipation in 24 V industrial backplanes. |
| Consumer Audio Input Stage | Automotive LED Driver Interface |
|
Use Scenario: First-stage amplification in portable headphone amplifiers or USB DAC output buffers. IC Role / Device Role / Timing Role: Small-signal NPN transistor operating in Class-A mode for minimal THD. Use Value: 250 MHz fT and 9 pF Ceb preserve wideband response up to 20 kHz with <0.05% distortion. |
Use Scenario: Driving base of high-current PNP/MOSFET switches controlling interior lighting or dashboard LEDs. IC Role / Device Role / Timing Role: Saturated switch providing logic-level translation and current gain between MCU GPIO and load. Use Value: VCE(sat) ≤ 250 mV and IC = 100 mA rating reduce heat generation and improve PWM efficiency at 100–500 Hz. |
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 |
|---|---|---|---|
| BC846B E6327 | hFE group B (200–450), higher gain spread; identical VCEO, VCE(sat), and package. | Suitable where tighter gain control is less critical than maximum small-signal amplification. | Select when designing for higher open-loop gain or lower base drive current requirements. |
| BC847A E6327 | VCEO = 45 V (vs. 65 V); otherwise identical pinout, hFE group A, and thermal specs. | Limited to ≤36 V systems; not recommended for 48 V automotive or industrial bus applications. | Choose only for cost-sensitive 5–24 V consumer designs where 65 V headroom is unnecessary. |
Compared with BC846AE6327, BC846BE6327 offers wider hFE range for higher gain flexibility but reduced predictability, while BC847AE6327 trades 20 V collector-emitter rating for marginal cost reduction-neither matches the original's 65 V robustness and group A consistency.
Availability
BC846AE6327 is available at Aetrix Electronics and suitable for automotive cabin audio preamps, industrial sensor signal conditioning, and consumer audio input stages requiring stable component supply and AEC-Q101 assurance.
Supply support for BC846AE6327 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 devices.
BC846AE6327 belongs to Infineon's BC846–BC850 family of AEC-Q101-qualified general-purpose transistors, engineered for reliable low-noise amplification and switching in harsh-environment automotive and industrial signal chains.
FAQ
Is BC846AE6327 suitable for automotive under-hood applications?
Yes. BC846AE6327 is AEC-Q101 qualified and rated for Tj = 150 °C, with validated performance across –40 °C to +125 °C ambient. Its 65 V VCEO, low noise, and Pb-free SOT23 package meet requirements for engine control unit signal conditioning and body electronics.
What is the maximum continuous collector current for BC846AE6327?
The absolute maximum continuous collector current is 100 mA at TS ≤ 71 °C. At higher board temperatures, derating applies per the Ptot vs. TS curve; peak pulsed current reaches 200 mA for tp ≤ 10 ms with D ≤ 2% duty cycle.
How does BC846AE6327 differ from BC846BE6327 in practical design?
BC846AE6327 has hFE = 110–220 (group A), ensuring tighter gain tolerance for precision bias networks. BC846BE6327 offers hFE = 200–450 (group B), increasing open-loop gain but requiring more conservative stability margins in feedback amplifiers.
Can BC846AE6327 replace BC847AE6327 in existing designs?
Only if VCEO ≥ 45 V is required. BC846AE6327 provides 65 V VCEO versus 45 V for BC847A, making it safer in 48 V systems. Pinout, package, and hFE group A are identical-no layout change needed, but verify voltage stress margins in the target application.
BC846AE6327 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- 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:
- 110 @ 2mA, 5V
- Power - Max:
- 330 mW
- Frequency - Transition:
- 250MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-SOT23
BC846AE6327 FAQ
1.How can I place an order for BC846AE6327 through Aetrix?
Please submit a Request for Quotation (RFQ) for BC846AE6327 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 BC846AE6327 reliable?
The price and inventory of BC846AE6327 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC846AE6327 is usually 5 days.
3.What payment methods are accepted for BC846AE6327?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC846AE6327 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC846AE6327?
BC846AE6327 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC846AE6327 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 BC846AE6327?
For technical support, including BC846AE6327 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC846AE6327 requirements.
6.How does Aetrix verify that BC846AE6327 is sourced from the original manufacturer or authorized distributors?
All BC846AE6327 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 BC846AE6327 meets industry standards.
7.What is the process for return or replacement of BC846AE6327?
All BC846AE6327 units undergo pre-shipment inspection (PSI). If there is an issue with BC846AE6327, 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 BC846AE6327 part is unused and in its original packaging.
Return procedure for BC846AE6327:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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