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Diodes Incorporated BC847BTQ-7
- Part No.:
- BC847BTQ-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- SOT-523
- Datasheet:
-
BC847BTQ-7.pdf
- Description:
- TRANS NPN 45V 0.1A SOT-523
- Quantity:
- Payment:
- Shipping:
Inventory:2,454
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Product details
Overview
BC847BTQ-7 from Diodes Incorporated is an AEC-Q101-qualified 45V NPN small-signal transistor in SOT523 package, rated for 100mA collector current, 150mW power dissipation, and 100MHz fT, used in automotive sensor signal conditioning and low-power switching circuits.
For engineers reviewing the BC847BTQ-7 datasheet, BC847BTQ-7 pinout, BC847BTQ-7 application, or BC847BTQ-7 equivalent, key selection criteria include VCEO = 45V, hFE = 200–450 at IC = 2mA, VCE(SAT) ≤ 250mV at IC = 10mA/IB = 0.5mA, and automotive-grade reliability per AEC-Q101.
Technical Context
This NPN BJT employs epitaxial planar die construction for stable gain and low leakage. It operates with VEBO = 6.0V, ICBO ≤ 15nA at 30V, and supports junction temperatures from –55°C to +150°C.
The device delivers fT = 100MHz at VCE = 5V and IC = 10mA, with noise figure NF ≤ 1.0dB at 1MHz, making it suitable for low-noise amplification and high-speed switching in constrained automotive PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 45V - Maximum safe collector-emitter voltage before breakdown under open-base condition |
| IC | 100mA - Continuous DC collector current rating defining maximum load drive capability |
| hFE | 200–450 - DC current gain range at VCE = 5V, IC = 2mA, critical for bias stability in amplifier stages |
| VCE(SAT) | ≤250mV - Saturation voltage at IC = 10mA/IB = 0.5mA, directly impacts conduction loss in switch mode |
| fT | 100MHz - Transition frequency indicating usable bandwidth for RF or fast digital switching |
| RθJA | 833°C/W - Junction-to-ambient thermal resistance on standard 1oz FR-4, limiting power handling in still air |
| ESD HBM | 4000V - Human Body Model robustness enabling handling without special ESD controls in assembly |
Pinout & Package
Package: SOT523 - ultra-small surface-mount plastic package (1.60 × 1.60 × 0.75 mm), lead-free, halogen-free, and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Emitter terminal | Current sink node; connects to ground or low-side reference in common-emitter configurations |
| 2 (Base) | Control input | Receives bias current to regulate collector current; requires series resistor for stable turn-on/turn-off |
| 3 (Collector) | Output current path | Drives load toward supply rail; layout must minimize trace inductance for high-frequency operation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, humidity, and mechanical shock per stress test requirements |
| Ultra-small SOT523 footprint | 1.6mm × 1.6mm body enables high-density routing in space-constrained modules like body control units |
| hFE binning (200–450) | Narrow gain spread reduces need for individual circuit trimming in production assemblies |
| Low VCE(SAT) at 10mA | Enables efficient low-voltage switching in 3.3V/5V logic-level interfaces without external drivers |
| JEDEC Level 1 moisture sensitivity | Zero bake requirement prior to reflow, simplifying SMT line integration and reducing process cost |
Applications
| Automotive Door Module | Engine Control Unit Sensor Interface |
|---|---|
Use Scenario: Driving LED status indicators and small solenoids in door latch and window control modules. IC Role / Device Role / Timing Role: NPN switch controlling 20–50mA loads from microcontroller GPIO pins. Use Value: Low VCE(SAT) minimizes heat rise in sealed enclosures; AEC-Q101 ensures 15-year field reliability. | Use Scenario: Amplifying low-level analog signals from crankshaft position and knock sensors. IC Role / Device Role / Timing Role: Small-signal amplifier stage providing gain before ADC sampling. Use Value: 1.0dB NF and stable hFE across –40°C to +125°C ensure consistent SNR in engine bay environments. |
| Infotainment System Power Sequencing | ADAS Camera Bias Supply |
Use Scenario: Enabling/disabling auxiliary rails (e.g., USB PHY, audio codec) during system boot-up and sleep transitions. IC Role / Device Role / Timing Role: Low-side enable switch controlled by PMIC sequencer outputs. Use Value: Fast turn-on/off (enabled by high fT) supports precise timing margins in multi-rail power sequencing. | Use Scenario: Providing stable bias current to CMOS image sensor analog front-end blocks. IC Role / Device Role / Timing Role: Constant-current source configured via emitter degeneration resistor. Use Value: Tight hFE tolerance and low ICBO (<15nA) maintain bias accuracy over temperature and lifetime. |
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,315 (Nexperia) | Same SOT23 package; hFE = 200–450 but not AEC-Q101 qualified; RθJA = 300°C/W | Limited to industrial/commercial use; unsuitable for under-hood automotive deployment | Select only if AEC-Q101 compliance is not required and thermal margin allows larger package |
| MMBT3904LT1G (onsemi) | SOT23-3; VCEO = 40V; hFE = 100–300; AEC-Q101 qualified; higher RθJA = 405°C/W | Lower voltage rating restricts use in 42V systems; wider hFE spread increases calibration effort | Prefer when board real estate permits SOT23 and 40V rating suffices for target subsystem |
Compared with BC847BTQ-7, BC847B,315 lacks automotive qualification and thermal performance, while MMBT3904LT1G trades voltage headroom and gain consistency for broader industry adoption-making BC847BTQ-7 optimal for compact, high-reliability 45V automotive signal paths.
Availability
BC847BTQ-7 is available at Aetrix Electronics and suitable for automotive body electronics, engine management systems, and ADAS camera modules requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for BC847BTQ-7 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, specializing in high-reliability components for automotive, industrial, and computing markets.
The BC847BTQ belongs to Diodes' AEC-Q101-qualified small-signal transistor family, engineered specifically for signal amplification, switching, and interface functions in harsh-environment automotive ECUs and sensor nodes.
FAQ
Is BC847BTQ-7 compatible with lead-free reflow profiles?
Yes. BC847BTQ-7 uses matte tin-plated leads and is fully RoHS-compliant with JEDEC Level 1 moisture sensitivity, supporting standard Pb-free reflow profiles (peak 260°C) without pre-bake. Its SOT523 package is qualified per J-STD-020.
What is the maximum operating temperature for continuous use?
The BC847BTQ-7 has a specified junction temperature range of –55°C to +150°C. For continuous operation at full 100mA collector current, derating is required above +25°C ambient due to its 833°C/W RθJA; maximum ambient temperature at full load is approximately +85°C on standard PCB layout.
Does BC847BTQ-7 support high-frequency switching above 10MHz?
Yes. With fT = 100MHz at VCE = 5V and IC = 10mA, BC847BTQ-7 supports clean switching up to ~10–20MHz in optimized layouts. Its 4.5pF COBO and low VCE(SAT) make it suitable for clock buffering and PWM-driven loads in automotive microcontrollers.
How does the SOT523 package affect thermal performance versus SOT23?
The SOT523 package has significantly higher thermal resistance (RθJA = 833°C/W) than SOT23 (typically ~300°C/W), limiting power dissipation to ~150mW. This necessitates careful thermal pad design and lower average current in sustained operation-but enables 40% smaller board area for space-critical modules.
BC847BTQ-7 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:
- 200 @ 2mA, 5V
- Power - Max:
- 150 mW
- Frequency - Transition:
- 100MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-523
BC847BTQ-7 FAQ
1.How can I place an order for BC847BTQ-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BC847BTQ-7 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 BC847BTQ-7 reliable?
The price and inventory of BC847BTQ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC847BTQ-7 is usually 5 days.
3.What payment methods are accepted for BC847BTQ-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC847BTQ-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC847BTQ-7?
BC847BTQ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC847BTQ-7 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 BC847BTQ-7?
For technical support, including BC847BTQ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC847BTQ-7 requirements.
6.How does Aetrix verify that BC847BTQ-7 is sourced from the original manufacturer or authorized distributors?
All BC847BTQ-7 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 BC847BTQ-7 meets industry standards.
7.What is the process for return or replacement of BC847BTQ-7?
All BC847BTQ-7 units undergo pre-shipment inspection (PSI). If there is an issue with BC847BTQ-7, 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 BC847BTQ-7 part is unused and in its original packaging.
Return procedure for BC847BTQ-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC847BTQ-7 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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