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Infineon Technologies BC846AE6433
- Part No.:
- BC846AE6433
- Manufacturer:
- Infineon Technologies
- Category:
- Single Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BC846AE6433.pdf
- Description:
- TRANS NPN 45V 0.1A PG-SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:330,000
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Product details
Overview
BC846AE6433 from Nexperia 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 = 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 at 1 kHz), housed in a RoHS-compliant SOT23 package qualified to AEC-Q101.
For engineers reviewing the BC846AE6433 datasheet, BC846AE6433 pinout, BC846AE6433 application, or BC846AE6433 equivalent, key selection criteria include its VCEO = 65 V rating, fT = 250 MHz transition frequency, Ccb = 0.95 pF collector-base capacitance, and suitability for low-noise AF amplification and switching in space-constrained automotive and industrial PCBs.
Technical Context
This BJT operates as a linear amplifier or saturated switch with base-driven control logic. Its hFE grouping (A-grade) ensures predictable current amplification across IC = 10 µA to 2 mA, while VBE(on) = 580–770 mV supports reliable turn-on with standard CMOS/TTL logic drive levels.
Thermal performance is defined by RthJS ≤ 240 K/W (junction-to-soldering-point), enabling stable operation up to Tj = 150 °C. The device's low Ceb = 9 pF and fT = 250 MHz support bandwidth-critical AF signal paths without phase distortion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 65 V - Supports rail voltages up to 48 V systems with margin for transients |
| hFE (IC = 2 mA) | 110–220 - Enables precise biasing and predictable gain in discrete amplifier stages |
| VCE(sat) | ≤250 mV @ IC/IB = 10 mA/0.5 mA - Minimizes conduction loss in switching applications |
| fT | 250 MHz - Ensures stable amplification up to mid-AF range (≤20 kHz) with headroom |
| Ccb | 0.95 pF - Reduces Miller effect, improving high-frequency stability in common-emitter configs |
| Noise Figure | 1.2–4 dB @ 1 kHz - Meets low-noise requirements for microphone preamps and sensor interfaces |
| Ptot | 330 mW @ TS ≤ 71 °C - Allows continuous operation in thermally constrained SOT23 footprints |
Pinout & Package
BC846AE6433 is supplied in the industry-standard SOT23 plastic surface-mount package (3-pin, 1.3 mm × 2.9 mm footprint), optimized for automated placement and reflow soldering on dense PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Current sink terminal | Provides low-impedance return path; connected to ground or emitter resistor in common-emitter topology |
| 2 (Base) | Control input | Accepts current-limited drive (e.g., via 10 kΩ resistor) to bias transistor into active/saturation region |
| 3 (Collector) | Current source terminal | Delivers amplified output current to load; requires pull-up or active load for voltage gain |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress-test requirements (HTOL, TC, ESD) |
| Low VCE(sat) | Reduces power dissipation in switching mode, extending thermal margin in fan drivers and LED controls |
| High hFE consistency | Minimizes unit-to-unit variation in analog gain stages, reducing calibration overhead |
| RoHS-compliant SOT23 | Enables lead-free assembly without derating; compatible with IPC-J-STD-020 reflow profiles |
Applications
| Audio Input Amplifier | Automotive Door Module Driver |
|---|---|
Use Scenario: Pre-amplifying low-level signals from electret microphones or piezoelectric sensors in voice-enabled ECUs. IC Role / Device Role / Timing Role: Discrete NPN BJT configured as common-emitter voltage amplifier with fixed bias network. Use Value: 1.2 dB noise figure and 250 MHz fT preserve SNR and bandwidth for speech-band (300–3400 Hz) fidelity. | Use Scenario: Driving small solenoids or relays in vehicle door lock/unlock actuators. IC Role / Device Role / Timing Role: Saturated switch controlling 12 V/100 mA loads under PWM or on/off logic control. Use Value: VCE(sat) ≤ 250 mV limits power loss to <10 mW, avoiding thermal shutdown in sealed modules. |
| Industrial Sensor Interface | Power Supply Enable Switch |
Use Scenario: Level-shifting and buffering analog outputs from temperature or pressure transducers. IC Role / Device Role / Timing Role: Emitter-follower buffer isolating sensitive sensor output from downstream ADC input loading. Use Value: hFE ≥ 110 ensures low output impedance (<100 Ω), minimizing signal attenuation and settling time. | Use Scenario: Enabling/disabling auxiliary 5 V rails in programmable logic controllers (PLCs). IC Role / Device Role / Timing Role: High-side or low-side switch controlled by microcontroller GPIO. Use Value: VCEO = 65 V provides 3× margin over 24 V nominal supply, preventing breakdown during load dump events. |
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,315 | Higher hFE range (200–450 at IC = 2 mA); otherwise identical ratings and package | Better suited for low-drive applications where base current must be minimized | Select when tighter hFE tolerance or higher gain is required without changing layout |
| MMBT3904LT1G | Same SOT23 package but lower VCEO = 40 V; hFE = 100–300; not AEC-Q101 qualified | Limited to non-automotive 24 V systems; lacks automotive reliability validation | Choose for cost-sensitive consumer designs where qualification is unnecessary |
Compared with BC846B,315, BC846AE6433 offers lower gain consistency but tighter VCE(sat) spec; versus MMBT3904LT1G, it adds AEC-Q101 compliance and 65 V breakdown-critical for automotive load-dump resilience.
Availability
BC846AE6433 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, and audio front-end circuits requiring stable component supply and long-term manufacturing continuity.
Supply support for BC846AE6433 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
Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified components.
The BC846 series belongs to Nexperia's general-purpose BJT portfolio, engineered specifically for robust, low-noise AF amplification and switching in space- and reliability-constrained applications.
FAQ
Is BC846AE6433 pin-compatible with BC847A or BC848A?
No-while all share the SOT23 package and identical pinout (E-B-C), BC846AE6433 has VCEO = 65 V, whereas BC847A and BC848A are rated at 45 V and 30 V respectively. Substitution requires verification of voltage margin in the target circuit.
What is the maximum operating temperature for continuous use?
The absolute maximum junction temperature is 150 °C. Derated operation begins at TS > 71 °C, where Ptot drops linearly from 330 mW to zero at 150 °C. For sustained 100 mA collector current, board-level thermal design must maintain TS ≤ 60 °C.
Does BC846AE6433 support pulsed operation beyond its DC power rating?
Yes-permissible pulse load follows Ptot(max)/Ptot(DC) = 1/D relationship, where D is duty cycle. At tp = 100 µs and D = 1%, peak power can reach 33 W, provided average power stays within 330 mW and thermal mass prevents junction overheating.
How does its noise performance compare to BC849C in audio applications?
BC846AE6433 specifies F = 1.2–4 dB at 1 kHz, while BC849C (VCEO = 30 V) achieves F = 1.2 dB typ. Both meet low-noise AF requirements, but BC846AE6433's higher VCEO makes it preferable for higher-supply preamp stages where BC849C would require derating.
BC846AE6433 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
BC846AE6433 FAQ
1.How can I place an order for BC846AE6433 through Aetrix?
Please submit a Request for Quotation (RFQ) for BC846AE6433 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 BC846AE6433 reliable?
The price and inventory of BC846AE6433 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC846AE6433 is usually 5 days.
3.What payment methods are accepted for BC846AE6433?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC846AE6433 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC846AE6433?
BC846AE6433 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC846AE6433 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 BC846AE6433?
For technical support, including BC846AE6433 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC846AE6433 requirements.
6.How does Aetrix verify that BC846AE6433 is sourced from the original manufacturer or authorized distributors?
All BC846AE6433 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 BC846AE6433 meets industry standards.
7.What is the process for return or replacement of BC846AE6433?
All BC846AE6433 units undergo pre-shipment inspection (PSI). If there is an issue with BC846AE6433, 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 BC846AE6433 part is unused and in its original packaging.
Return procedure for BC846AE6433:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC846AE6433 Tags
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BC847B,215
Nexperia USA Inc.
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