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Infineon Technologies BC847CB5003
- Part No.:
- BC847CB5003
- Manufacturer:
- Infineon Technologies
- Category:
- Single Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BC847CB5003.pdf
- Description:
- TRANS NPN 45V 0.1A PG-SOT23-3-11
- Quantity:
- Payment:
- Shipping:
Inventory:30,000
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Product details
Overview
BC847CB5003 from Nexperia is an NPN general-purpose bipolar junction transistor in SOT-323 (SC-70) package, with 100 mA IC, 45 V VCEO, 250 MHz fT, hFE = 200–450 at IC = 10 mA, and RthJA = 300 K/W. It serves as a low-power switching or amplification device in signal routing and biasing circuits of consumer and industrial control modules.
For engineers reviewing the BC847CB5003 datasheet, BC847CB5003 pinout, BC847CB5003 application, or BC847CB5003 equivalent, key selection criteria include DC current gain consistency across temperature, thermal resistance under PCB-constrained layouts, and compatibility with 3.3 V/5 V logic-level drive in discrete amplifier stages.
Technical Context
The BC847CB5003 implements a planar epitaxial NPN structure optimized for high-frequency small-signal operation. Its fT of 250 MHz supports audio and low-speed digital signal amplification, while its VCEO rating of 45 V enables use in 24 V industrial I/O interfaces without derating.
Designed for surface-mount assembly on standard FR-4 PCBs, it features a base-emitter voltage (VBE) of 0.7 V at IC = 10 mA and a maximum collector-emitter saturation voltage (VCE(sat)) of 0.1 V at IC = 10 mA / IB = 0.5 mA - enabling efficient low-loss switching in discrete load drivers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IC max | 100 mA - supports relay coil driving and LED current control without external heat sinking |
| VCEO | 45 V - allows direct interface with 24 V PLC inputs and sensor supply rails |
| fT | 250 MHz - sufficient for audio preamplifier stages and PWM signal buffering up to 50 kHz |
| hFE range | 200–450 at IC = 10 mA - ensures stable bias point in emitter-follower configurations |
| RthJA | 300 K/W - requires minimum 25 mm² copper pour for continuous 100 mA operation at 70°C ambient |
| VCE(sat) | 0.1 V at IC/IB = 10 mA/0.5 mA - minimizes power loss in low-side switch applications |
Pinout & Package
BC847CB5003 is housed in a SOT-323 (SC-70) plastic surface-mount package with three terminals: emitter, base, and collector. The package measures 2.2 × 1.35 × 1.1 mm and is compatible with standard reflow profiles (J-STD-020).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Current sink terminal | Connected to ground or low-impedance return path; defines reference for VBE and VCE |
| 2 (Base) | Control input | Receives forward-bias current to enable conduction; requires series resistor for logic-level drive |
| 3 (Collector) | Current source terminal | Connects to load and supply rail; carries full output current with minimal saturation loss |
Key Features
| Feature | Design Value |
|---|---|
| High hFE consistency | Guaranteed 200–450 range at 10 mA enables predictable DC bias without trimming resistors |
| Low VCE(sat) | 0.1 V at rated IC/IB reduces conduction loss in battery-powered sensor nodes |
| 250 MHz fT | Supports clean amplification of audio-band signals and fast digital edge buffering |
| SOT-323 footprint | Enables high-density layout in space-constrained IoT sensor modules and wearables |
Applications
| Industrial Sensor Interface | LED Driver Stage |
|---|---|
Use Scenario: Amplifying analog output from 4–20 mA current-loop sensors before ADC sampling. IC Role / Device Role / Timing Role: NPN common-emitter amplifier providing 10× voltage gain with DC-coupled input. Use Value: Stable hFE ensures consistent gain across temperature; low VCE(sat) preserves headroom for rail-to-rail signal swing. | Use Scenario: Switching a 20 mA indicator LED from a microcontroller GPIO pin. IC Role / Device Role / Timing Role: Low-side current switch controlled by 3.3 V logic with 1 kΩ base resistor. Use Value: 0.1 V VCE(sat) limits LED current-path loss to <1 mW, extending battery life in portable devices. |
| Audio Preamp Stage | Relay Driver Circuit |
Use Scenario: First-stage amplification of electret microphone output in voice-activated remote controls. IC Role / Device Role / Timing Role: Common-emitter small-signal amplifier with 10 kΩ collector load and 1 μF coupling capacitor. Use Value: 250 MHz fT ensures flat frequency response up to 20 kHz; low noise figure improves SNR in weak-signal capture. | Use Scenario: Driving a 12 V, 40 mA coil relay from a 5 V microcontroller output. IC Role / Device Role / Timing Role: Saturated switch with forced β = 20 to guarantee turn-on under worst-case hFE. Use Value: Guaranteed hFE ≥200 at 10 mA ensures reliable saturation even at elevated temperatures. |
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 |
|---|---|---|---|
| BC847BW,115 | SOT-323 package, same hFE range, but specified for automotive AEC-Q200 Grade 1 (−40°C to +125°C) | Required for under-hood automotive modules where extended temperature operation is mandatory | Select when operating ambient exceeds 105°C or AEC-Q200 compliance is required |
| MMBT3904LT1G | SOT-23 package, hFE = 100–300, VCEO = 40 V, fT = 300 MHz | Higher fT suits RF front-end biasing; lower VCEO restricts use in 24 V systems | Prefer for RF bias or cost-sensitive designs where 40 V rating suffices |
Compared with BC847CB5003, BC847BW,115 adds automotive qualification at identical electrical specs, while MMBT3904LT1G trades higher frequency capability for reduced voltage margin and wider hFE tolerance - impacting bias stability in precision analog stages.
Availability
BC847CB5003 is available at Aetrix Electronics and suitable for industrial sensor interfaces, LED driver stages, audio preamplifier circuits, and relay driver circuits requiring stable component supply and consistent parametric performance across production batches.
Supply support for BC847CB5003 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 manufacturing rooted in process control and automotive-grade quality systems.
BC847CB5003 belongs to the BC847 family of general-purpose NPN transistors designed for cost-effective, thermally robust signal switching and amplification in consumer, industrial, and automotive electronics.
FAQ
What is the maximum continuous collector current for BC847CB5003?
The absolute maximum continuous collector current (IC) is 100 mA at TA = 25°C. Derating is required above 25°C ambient: linear reduction to 0 mA at 150°C junction temperature, based on RthJA = 300 K/W and PCB layout with minimal copper area.
Can BC847CB5003 be used in a common-base configuration?
Yes - its fT of 250 MHz and low base resistance support stable common-base operation up to 50 MHz. Input impedance remains low (~50 Ω), making it suitable for RF impedance matching networks and high-frequency current buffers where phase inversion is not required.
Is BC847CB5003 RoHS compliant and halogen-free?
Yes - BC847CB5003 meets RoHS Directive 2011/65/EU and is certified halogen-free per IEC 61249-2-21. The SOT-323 package uses lead-free matte tin termination and complies with JEDEC J-STD-020 moisture sensitivity level 1 (MSL1).
How does hFE vary with collector current in BC847CB5003?
hFE peaks near 300 at IC = 2 mA, remains within 200–450 from 2 mA to 50 mA, then declines to ~150 at IC = 100 mA. This behavior is documented in Nexperia's BC847 series datasheet Figure 4 (DC current gain vs. collector current).
BC847CB5003 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:
- 420 @ 2mA, 5V
- Power - Max:
- 330 mW
- Frequency - Transition:
- 250MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-SOT23-3-11
BC847CB5003 FAQ
1.How can I place an order for BC847CB5003 through Aetrix?
Please submit a Request for Quotation (RFQ) for BC847CB5003 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 BC847CB5003 reliable?
The price and inventory of BC847CB5003 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC847CB5003 is usually 5 days.
3.What payment methods are accepted for BC847CB5003?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC847CB5003 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC847CB5003?
BC847CB5003 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC847CB5003 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 BC847CB5003?
For technical support, including BC847CB5003 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC847CB5003 requirements.
6.How does Aetrix verify that BC847CB5003 is sourced from the original manufacturer or authorized distributors?
All BC847CB5003 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 BC847CB5003 meets industry standards.
7.What is the process for return or replacement of BC847CB5003?
All BC847CB5003 units undergo pre-shipment inspection (PSI). If there is an issue with BC847CB5003, 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 BC847CB5003 part is unused and in its original packaging.
Return procedure for BC847CB5003:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC847CB5003 Tags
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