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Diodes Incorporated BC847BW-7-F
- Part No.:
- BC847BW-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
BC847BW-7-F.pdf
- Description:
- TRANS NPN 45V 0.1A SOT-323
- Quantity:
- Payment:
- Shipping:
Inventory:595,226
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Product details
Overview
BC847BW-7-F from Diodes Incorporated is an NPN small-signal transistor in SOT323 package, rated for 45 V VCEO, 100 mA IC, and 200 mW power dissipation, with DC current gain (hFE) of 200–450 at IC = 2 mA, used in low-power switching and audio-frequency amplification circuits.
For engineers reviewing the BC847BW-7-F datasheet, BC847BW-7-F pinout, BC847BW-7-F application, or BC847BW-7-F equivalent, key selection criteria include VCEO/VCBO ratings, hFE group B tolerance, thermal derating above 25°C, and SOT323 footprint compatibility with automated placement systems.
Technical Context
This transistor operates as a general-purpose NPN bipolar junction device optimized for linear amplification and saturated switching. Its 45 V collector-emitter breakdown and 50 V collector-base rating support use in 24 V rail interfaces and signal-level isolation stages.
With fT ≥ 100 MHz and Cobo ≤ 4.5 pF, it maintains usable gain up to mid-VHF frequencies; its 625 °C/W RθJA requires careful PCB copper area planning for sustained 100 mA operation above ambient 50°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 45 V - Maximum safe collector-emitter voltage before avalanche conduction in common-emitter configuration. |
| IC (continuous) | 100 mA - Absolute maximum DC collector current; derates linearly above 25°C ambient per Figure 1. |
| hFE (Band B) | 200–450 - Guaranteed DC current gain range at VCE = 5 V, IC = 2 mA; enables predictable biasing in amplifier designs. |
| VCE(sat) | 90–250 mV @ IC = 10 mA, IB = 0.5 mA - Low saturation voltage ensures minimal power loss in switching applications. |
| fT | 100–300 MHz - Gain-bandwidth product defines upper frequency limit for small-signal amplification. |
| RθJA | 625 °C/W - Thermal resistance from junction to ambient on minimum FR4 pad layout; dictates heatsinking requirements. |
| ESD HBM | 4,000 V - Human Body Model rating confirms robustness against handling-induced electrostatic discharge. |
Pinout & Package
Package: SOT323 - Surface-mount plastic package measuring 2.15 mm × 2.10 mm × 0.95 mm, with matte tin-plated leads compliant to MIL-STD-202 Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Emitting terminal for majority carriers | Connected to lowest potential node; determines current sink capability and grounding strategy in common-emitter layouts. |
| 2 (Base) | Control electrode for carrier injection | Requires current-limited drive (typically ≤5% of IC) to ensure saturation; sensitive to ESD due to thin oxide layer. |
| 3 (Collector) | Current-collecting terminal | Connected to load or supply rail; must withstand full VCEO during cutoff and dissipate heat during conduction. |
Key Features
| Feature | Design Value |
|---|---|
| Lead-free & RoHS 3 compliant | Fully compliant with EU Directive 2015/863/EU; <900 ppm Br/Cl, <1000 ppm Sb; suitable for automotive and consumer end-equipment. |
| SOT323 footprint | Standardized 3-pin, 0.65 mm pitch package enabling high-density PCB layouts and compatibility with J-STD-020 Level 1 moisture handling. |
| Band B hFE grouping | Guaranteed 200–450 hFE at 2 mA/5 V eliminates need for post-manufacture binning in production amplifier bias networks. |
| Low VBE(on) | 580–700 mV at IC = 2 mA ensures reliable turn-on with 3.3 V logic-level base drive without additional level-shifting circuitry. |
Applications
| LED Driver Circuit | Microcontroller GPIO Interface |
|---|---|
Use Scenario: Driving discrete indicator LEDs from 3.3 V or 5 V microcontroller outputs with current limiting. IC Role / Device Role / Timing Role: NPN switch controlling LED anode-to-rail current path; base driven directly by MCU GPIO. Use Value: VCE(sat) ≤ 250 mV at 10 mA ensures >95% LED forward voltage utilization; SOT323 footprint saves board space vs. SOIC alternatives. |
Use Scenario: Level translation and signal inversion between mixed-voltage logic domains (e.g., 1.8 V sensor output to 5 V ADC input). IC Role / Device Role / Timing Role: Active-low inverter stage providing clean digital edge transitions with sub-10 ns propagation delay. Use Value: fT ≥ 100 MHz supports clean switching up to 10 MHz clock rates; hFE stability across –50°C to +150°C enables industrial temperature operation. |
| Audio Pre-amplifier Stage | Power Supply Enable Switch |
Use Scenario: Low-noise voltage amplification of microphone or sensor signals in portable audio devices. IC Role / Device Role / Timing Role: Common-emitter small-signal amplifier with emitter degeneration resistor for gain stability. Use Value: NF ≤ 10 dB at 1 kHz/200 Hz bandwidth minimizes audible hiss; 6 V VEBO allows safe biasing with standard op-amp rails. |
Use Scenario: Enabling/disabling auxiliary 12 V or 24 V subsystems (e.g., motor drivers, sensors) under MCU control. IC Role / Device Role / Timing Role: High-side or low-side enable switch controlling PMOS/NMOS gate drive or relay coil current. Use Value: 45 V VCEO safely isolates 24 V loads; 200 mA ICM peak rating accommodates inrush currents during subsystem startup. |
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 |
|---|---|---|---|
| BC847B,215 (Nexperia) | Same SOT323 package, identical VCEO/IC ratings, but hFE band B specified as 200–450 at IC = 10 mA (not 2 mA). | Requires revalidation of base resistor values in low-current bias networks due to test condition mismatch. | Select when sourcing flexibility is prioritized and existing designs operate near IC = 10 mA. |
| MMBT3904LT1G (ON Semiconductor) | Same SOT23-3 package footprint, but VCEO = 40 V (5 V lower), hFE = 100–300 (lower min/max), and RθJA = 500 °C/W. | Not recommended for 24 V systems requiring margin above 40 V transients or high-gain analog stages. | Choose only if legacy MMBT3904 design reuse is mandatory and voltage margin is verified. |
Compared with BC847BW-7-F, BC847B,215 offers identical electrical envelope but different hFE test conditions affecting bias accuracy, while MMBT3904LT1G trades 5 V voltage headroom and reduced gain for broader distributor availability-neither is drop-in compatible without schematic or layout review.
Availability
BC847BW-7-F is available at Aetrix Electronics and suitable for LED driver circuits, microcontroller interface logic, audio pre-amplifiers, and power supply enable switches requiring stable component supply and consistent Band B hFE performance.
Supply support for BC847BW-7-F 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with ISO/TS 16949-certified manufacturing facilities and broad distribution across industrial, computing, and consumer markets.
This part belongs to Diodes' BC846–BC848 family of general-purpose NPN transistors designed specifically for cost-sensitive, high-volume applications requiring guaranteed gain grouping, lead-free compliance, and SMT process compatibility.
FAQ
What is the maximum operating temperature for BC847BW-7-F?
The BC847BW-7-F has an operating junction temperature range of –65°C to +150°C. At ambient temperatures above 25°C, power dissipation must be linearly derated from 200 mW using the 625 °C/W RθJA value; full-rated current is only sustainable below ~50°C ambient on standard FR4 layouts.
Is BC847BW-7-F suitable for automotive applications?
BC847BW-7-F is not AEC-Q101 qualified out-of-the-box. Diodes offers automotive-grade variants (e.g., BC847BWQ-7-F) with PPAP documentation, IATF 16949 manufacturing, and extended reliability testing. Standard BC847BW-7-F may be used in non-safety-critical automotive subsystems only after customer qualification.
How does the SOT323 package compare to SOT23 for this transistor?
SOT323 is 20% smaller than SOT23 (2.15 mm × 2.10 mm vs. 2.9 mm × 1.3 mm), with tighter 0.65 mm pin pitch. It offers identical electrical specs but requires higher-precision placement equipment and reduced copper pour around pads to meet J-STD-020 Level 1 moisture sensitivity requirements.
What is the meaning of the "W" and "-7-F" suffixes in BC847BW-7-F?
"W" denotes the SOT323 package variant within the BC847 series; "-7-F" indicates 7-inch tape-and-reel packaging with 3,000 units per reel and lead-free (RoHS-compliant) finish. The "F" explicitly confirms full halogen- and antimony-free "Green" material compliance per Diodes' specification.
BC847BW-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- 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):
- 20nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 200 @ 2mA, 5V
- Power - Max:
- 200 mW
- Frequency - Transition:
- 300MHz
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
BC847BW-7-F FAQ
1.How can I place an order for BC847BW-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BC847BW-7-F 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 BC847BW-7-F reliable?
The price and inventory of BC847BW-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC847BW-7-F is usually 5 days.
3.What payment methods are accepted for BC847BW-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC847BW-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC847BW-7-F?
BC847BW-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC847BW-7-F 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 BC847BW-7-F?
For technical support, including BC847BW-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC847BW-7-F requirements.
6.How does Aetrix verify that BC847BW-7-F is sourced from the original manufacturer or authorized distributors?
All BC847BW-7-F 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 BC847BW-7-F meets industry standards.
7.What is the process for return or replacement of BC847BW-7-F?
All BC847BW-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BC847BW-7-F, 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 BC847BW-7-F part is unused and in its original packaging.
Return procedure for BC847BW-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC847BW-7-F Tags
-
MMBT3906LT1G
onsemi
-
MMBT3904-7-F
Diodes Incorporated
-
MMBT3904LT1G
onsemi
-
MMBT3906-7-F
Diodes Incorporated
-
MMBT3904-TP
Micro Commercial Co
-
MMBT2222A-7-F
Diodes Incorporated
-
BC846BLT1G
onsemi
-
BC847B,215
Nexperia USA Inc.
-
SMMBT3904LT1G
onsemi
-
MMBT2222A-TP
Micro Commercial Co
-
MMBTA06LT1G
onsemi
-
MMBT2222ALT1G
onsemi
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