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Diodes Incorporated BC847CT-7-F
- Part No.:
- BC847CT-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- SOT-523
- Datasheet:
-
BC847CT-7-F.pdf
- Description:
- TRANS NPN 45V 0.1A SOT-523
- Quantity:
- Payment:
- Shipping:
Inventory:1,439,904
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Product details
Overview
BC847CT-7-F from Diodes Incorporated is a 45V NPN small-signal transistor in SOT523 package, rated for 100mA collector current, with hFE = 220–450 at IC = 2mA, VCE = 5V, and VCE(sat) ≤ 600mV at IC = 100mA/IB = 5mA. It serves as a general-purpose switching and amplification device in space-constrained consumer and industrial PCBs.
For engineers reviewing the BC847CT-7-F datasheet, BC847CT-7-F pinout, BC847CT-7-F application, or BC847CT-7-F equivalent, key selection criteria include its 45V VCEO, 150mW power dissipation, 100MHz fT, ultra-small SOT523 footprint, and guaranteed hFE binning (C-grade) for predictable gain control in bias networks and digital logic interfaces.
Technical Context
This NPN bipolar junction transistor uses epitaxial planar die construction for stable DC current gain and low leakage. Its 45V VCEO and 6V VEBO support operation in low-voltage rail-switching and level-shifting circuits up to 3.3V/5V domains.
The device delivers fT = 100MHz at IC = 10mA, enabling use in audio-frequency amplification and low-speed digital signal conditioning. ESD robustness (4kV HBM) and -55°C to +150°C operating range support deployment in automotive-infotainment and industrial sensor front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 45 V - Maximum safe collector-emitter voltage before breakdown in common-emitter configuration. |
| IC | 100 mA - Continuous collector current rating; supports load switching up to ~50mA with 2× safety margin. |
| hFE (C grade) | 220–450 - Guaranteed DC current gain range at 2mA/5V; enables precise base drive calculation for saturation. |
| VCE(sat) | ≤600 mV at IC=100mA/IB=5mA - Low saturation voltage minimizes conduction loss in high-duty-cycle switch applications. |
| fT | 100 MHz - Unity-gain frequency confirms suitability for audio amplification and sub-MHz signal buffering. |
| PD | 150 mW - Power dissipation limit on standard FR-4 PCB; requires thermal derating above +25°C ambient. |
| ESD HBM | 4,000 V - Human-body-model ESD rating allows handling without special precautions in Class 1B environments. |
Pinout & Package
Package: SOT523 - ultra-small surface-mount plastic package (1.60 × 1.60 × 0.90 mm), moisture sensitivity level 1, matte tin-plated leads, weight ≈ 0.002 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Current sink terminal | Connected to ground or lower-potential node; defines reference for base-emitter junction biasing. |
| 2 (Base) | Control input | Receives current-limited drive to set collector current; requires series resistor for digital GPIO interfacing. |
| 3 (Collector) | Current source terminal | Drives load toward VCC; layout must minimize trace inductance for fast switching transitions. |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed hFE binning (C grade) | 220–450 at 2mA/5V ensures consistent switching thresholds across production lots. |
| Ultra-small SOT523 footprint | 1.6 × 1.6 mm outline saves >60% board area vs. SOT23, critical for wearables and compact modules. |
| Epitaxial planar die construction | Delivers low leakage (ICBO ≤ 15nA) and stable gain over temperature for reliable bias networks. |
| Lead-free & halogen-free "Green" compliance | Meets RoHS 3 (2015/863/EU) and JEDEC J-STD-020 Level 1, supporting eco-conscious manufacturing. |
Applications
| LED Driver Circuit | Microcontroller GPIO Expander |
|---|---|
Use Scenario: Driving discrete indicator LEDs from 3.3V MCU outputs with current limiting. IC Role / Device Role / Timing Role: NPN switch controlling LED anode connection to VCC while sinking cathode current to ground. Use Value: VCE(sat) ≤ 600mV ensures >2.7V forward drop across LED at 20mA, preserving brightness and efficiency. | Use Scenario: Adding discrete logic-level translation or signal inversion for I²C/SPI peripheral control lines. IC Role / Device Role / Timing Role: Inverting buffer stage converting active-high MCU output to active-low enable signal. Use Value: 100MHz fT supports clean edge integrity up to 10MHz clock rates without added propagation delay. |
| Low-Voltage Sensor Interface | Power Rail Sequencing Switch |
Use Scenario: Amplifying weak analog signals from thermistors or photodiodes in battery-powered IoT nodes. IC Role / Device Role / Timing Role: Common-emitter amplifier stage with emitter-degeneration bias for stable DC operating point. Use Value: hFE = 220–450 enables predictable gain setting with ±10% tolerance, reducing calibration overhead. | Use Scenario: Enabling/disabling auxiliary 3.3V or 5V rails based on system power-good status signals. IC Role / Device Role / Timing Role: High-side or low-side load switch controlled by PMIC or supervisor IC output. Use Value: 45V VCEO provides 2× margin over 24V backplane rails, preventing latch-up during hot-swap events. |
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-7-F | SOT323 package (2.1 × 1.25 mm); same electrical specs but larger footprint and higher RθJA (625°C/W). | Less suitable for ultra-dense layouts; better thermal performance only with larger copper pour. | Select when board assembly uses legacy SOT323 tooling or requires easier rework access. |
| MMBT3904LT1G | hFE = 100–300 (standard grade); VCEO = 40V; SOT23-3 package (3.0 × 1.4 mm). | Lower voltage rating limits use in 24V systems; larger size eases hand-soldering but increases parasitic capacitance. | Choose where cost sensitivity outweighs size constraints and 40V margin suffices. |
Compared with BC847BW-7-F and MMBT3904LT1G, BC847CT-7-F offers the smallest PCB footprint and tightest hFE binning-critical for miniaturized designs requiring predictable base drive and minimal thermal resistance in confined spaces.
Availability
BC847CT-7-F is available at Aetrix Electronics and suitable for LED driver circuits, microcontroller GPIO expansion, low-voltage sensor interfaces, and power rail sequencing switches requiring stable component supply and guaranteed gain consistency.
Supply support for BC847CT-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 design and manufacturing operations across Asia and the Americas.
The BC847 series belongs to Diodes' small-signal transistor product line, engineered for high-reliability, space-efficient switching and amplification in consumer, industrial, and automotive electronics.
FAQ
What is the maximum continuous collector current for BC847CT-7-F?
The absolute maximum continuous collector current is 100mA at TA = +25°C. Derating is required above this temperature: power dissipation drops linearly to zero at +150°C ambient, per the 833°C/W RθJA specification. For sustained 100mA operation, board-level thermal design must maintain junction temperature below 150°C.
How does the C-grade hFE bin differ from A- and B-grade variants?
The C-grade guarantees hFE = 220–450 at IC = 2mA and VCE = 5V, tighter than A-grade (110–220) and B-grade (200–450). This enables more accurate base resistor selection in fixed-bias circuits and reduces gain-related variance in production assemblies without trimming.
Can BC847CT-7-F replace BC847BT-7-F in existing designs?
Yes, with functional equivalence in all electrical parameters except hFE range: BT-grade specifies 200–450, CT-grade 220–450. The CT variant offers improved minimum gain, enhancing reliability in marginal drive conditions. No layout or schematic changes are needed-same SOT523 package and pinout.
Is BC847CT-7-F qualified for automotive applications?
No-BC847CT-7-F is not AEC-Q101 qualified. For automotive use, Diodes offers the pin-compatible BC847BTQ variant, which undergoes extended temperature cycling, HTOL, and ESD testing per AEC-Q101 Rev D. Standard BC847CT-7-F is rated for industrial (-55°C to +150°C) but lacks automotive qualification documentation.
BC847CT-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOT-523
- 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):
- 15nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 420 @ 2mA, 5V
- Power - Max:
- 150 mW
- Frequency - Transition:
- 100MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-523
BC847CT-7-F FAQ
1.How can I place an order for BC847CT-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BC847CT-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 BC847CT-7-F reliable?
The price and inventory of BC847CT-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 BC847CT-7-F is usually 5 days.
3.What payment methods are accepted for BC847CT-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC847CT-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC847CT-7-F?
BC847CT-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC847CT-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 BC847CT-7-F?
For technical support, including BC847CT-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC847CT-7-F requirements.
6.How does Aetrix verify that BC847CT-7-F is sourced from the original manufacturer or authorized distributors?
All BC847CT-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 BC847CT-7-F meets industry standards.
7.What is the process for return or replacement of BC847CT-7-F?
All BC847CT-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BC847CT-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 BC847CT-7-F part is unused and in its original packaging.
Return procedure for BC847CT-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC847CT-7-F Tags
-
MMBT3906LT1G
onsemi
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MMBT3904-7-F
Diodes Incorporated
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MMBT3904LT1G
onsemi
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MMBT3906-7-F
Diodes Incorporated
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MMBT3904-TP
Micro Commercial Co
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MMBT2222A-7-F
Diodes Incorporated
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BC846BLT1G
onsemi
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BC847B,215
Nexperia USA Inc.
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SMMBT3904LT1G
onsemi
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MMBT2222A-TP
Micro Commercial Co
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MMBTA06LT1G
onsemi
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MMBT2222ALT1G
onsemi
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