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Diodes Incorporated BC847BQ-7-F
- Part No.:
- BC847BQ-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BC847BQ-7-F.pdf
- Description:
- TRANS NPN 45V 0.1A SOT-23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,860
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Product details
Overview
BC847BQ-7-F from Diodes Incorporated is an NPN small-signal transistor in SOT23 package, rated for 45 V VCEO, 100 mA IC, and 310 mW PD, with DC current gain (hFE) of 200–450 at IC = 2 mA, used in low-power switching and audio-frequency amplification circuits in industrial control and consumer electronics.
For engineers reviewing the BC847BQ-7-F datasheet, BC847BQ-7-F pinout, BC847BQ-7-F application, or BC847BQ-7-F equivalent, this page delivers verified electrical parameters, thermal derating behavior, SOT23 terminal mapping, automotive-grade qualification status, and direct alternatives with validated hFE and VCEO trade-offs.
Technical Context
This transistor operates as a general-purpose NPN amplifier/switch with complementary PNP pairing (BC857BQ), specified for stable performance across −65°C to +150°C junction temperature. Its 300 MHz fT and 2 kΩ hie support mid-band AF amplification, while VCE(sat) ≤ 250 mV at IC = 10 mA / IB = 0.5 mA enables efficient low-voltage switching.
Thermal design is constrained by RθJA = 403°C/W on minimal pad layout and 357°C/W on 15 mm × 15 mm copper, requiring careful PCB copper area allocation. ESD robustness includes 4 kV HBM and 400 V MM ratings per JEDEC JESD22-A114/A115.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 45 V - Maximum collector-emitter voltage before breakdown under active bias; sets upper rail limit for 3.3 V/5 V logic-level switching stages. |
| IC (continuous) | 100 mA - Safe steady-state collector current; supports LED drivers, sensor interface buffers, and relay coil control without forced cooling. |
| hFE range | 200–450 @ IC = 2 mA, VCE = 5 V - Gain spread impacts base drive resistor tolerance in linear amplifier designs and saturation margin in switch applications. |
| fT | 100–300 MHz - Unity-gain frequency defines usable bandwidth for audio preamps and RF detector stages up to ~30 MHz. |
| VCE(sat) | 90–250 mV @ IC = 10 mA / IB = 0.5 mA - Low saturation voltage minimizes power loss and self-heating in high-duty-cycle digital output stages. |
| PD | 310 mW - Power dissipation limit on standard FR4 with minimum pad layout; requires ≥15 mm × 15 mm copper for full-rated operation. |
Pinout & Package
BC847BQ-7-F uses the industry-standard SOT23 surface-mount package (3.0 × 1.4 × 1.1 mm), with matte tin-plated leads compliant to MIL-STD-202 Method 208 and moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | E | Current sink node; connects to ground or low-side load return path; must be routed with low-inductance trace for fast switching. |
| 2 (Base) | B | Control input; requires current-limited drive (typically 1–10 kΩ series resistor) to ensure reliable saturation without overdrive stress. |
| 3 (Collector) | C | Current source node; connects to load supply rail or pull-up; layout must minimize parasitic inductance for <100 ns turn-off transitions. |
Key Features
| Feature | Design Value |
|---|---|
| Automated insertion compatibility | SOT23 footprint enables high-speed pick-and-place assembly with standard nozzle tooling and reflow profiles (J-STD-020 Level 1). |
| Automotive qualification | BC847BQ variant meets AEC-Q101 requirements for stress testing, enabling use in under-hood and infotainment subsystems. |
| Green compound packaging | Halogen- and antimony-free molding compound (<900 ppm Br, <900 ppm Cl, <1000 ppm Sb) satisfies EU RoHS 3 and automotive ELV directives. |
| High ESD immunity | 4 kV human-body-model rating allows safe handling during manual prototyping and board-level repair without special grounding protocols. |
Applications
| LED Driver Circuit | Microcontroller GPIO Expander |
|---|---|
|
Use Scenario: Driving 20 mA indicator LEDs from 3.3 V microcontroller outputs with current limiting via base resistor. IC Role / Device Role / Timing Role: Low-side switch controlling LED anode-to-VCC path; operates in saturation with <1 µs turn-on/turn-off delay. Use Value: VCE(sat) ≤ 250 mV ensures >95% LED forward voltage utilization and <5 mW transistor dissipation at full load. |
Use Scenario: Amplifying weak analog sensor signals (e.g., thermistor divider output) into 0–3.3 V range for ADC sampling. IC Role / Device Role / Timing Role: Common-emitter amplifier stage with fixed bias network; configured for 20 dB voltage gain at 1 kHz. Use Value: hFE ≥ 200 and fT ≥ 100 MHz provide stable gain flatness across audio band with <0.5% THD at 1 VPP. |
| Relay Coil Interface | Level Translation Stage |
|
Use Scenario: Switching 12 V/40 mA relay coils using 5 V logic signals in PLC I/O modules. IC Role / Device Role / Timing Role: Saturated switch with flyback diode protection; handles repetitive 10 ms on/off cycles. Use Value: 45 V VCEO safely clamps inductive kickback spikes up to 35 V, eliminating need for external clamp components. |
Use Scenario: Converting 1.8 V logic outputs to 5 V-compatible levels for legacy peripherals in mixed-voltage systems. IC Role / Device Role / Timing Role: Emitter-follower buffer with unity voltage gain and current gain >200 to drive 10 kΩ loads. Use Value: VBE(on) = 580–700 mV enables clean 1.8 V → 5 V translation with <10 ns propagation delay and no shoot-through risk. |
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 | Same hFE range (200–450) and VCEO (45 V), but non-automotive grade; lacks AEC-Q101 qualification. | Not suitable for automotive or safety-critical industrial environments where stress-test compliance is mandatory. | Select when cost sensitivity outweighs qualification requirements and ambient temperature stays below +125°C. |
| MMBT3904LT1G | Lower hFE (100–300), same VCEO (40 V), higher VCE(sat) (300 mV typical), and wider gain distribution. | Requires larger base drive and yields less predictable gain in linear amplifiers; acceptable for basic switching only. | Choose only for legacy BOM replacement where BC847BQ-7-F is unavailable and gain stability is not critical. |
Compared with BC847BW-7-F, BC847BQ-7-F adds AEC-Q101 qualification and tighter thermal specs for automotive use; versus MMBT3904LT1G, it delivers superior hFE consistency and lower saturation loss-critical for precision analog and high-reliability switching.
Availability
BC847BQ-7-F is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor signal conditioning, and consumer appliance power management requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BC847BQ-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, specializing in high-reliability components for automotive, industrial, and computing markets since 1969.
BC847BQ-7-F belongs to the BC846A–BC848C automotive-qualified NPN transistor family, designed specifically for robust low-voltage switching and amplification in harsh-environment electronic control units.
FAQ
What is the maximum operating temperature for BC847BQ-7-F?
The BC847BQ-7-F has a specified junction temperature range of −65°C to +150°C. Its absolute maximum storage temperature matches this range. Derating begins above +25°C ambient, with full power (310 mW) only permissible at ≤+25°C on minimal PCB copper; power must be linearly reduced by 0.78 mW/°C above that point per the datasheet derating curve.
Is BC847BQ-7-F pin-compatible with BC847B-7-F?
Yes-both share identical SOT23 pinout (E-B-C), mechanical dimensions, and soldering profile. The sole functional difference is automotive qualification: BC847BQ-7-F is AEC-Q101 tested, while BC847B-7-F is commercial grade. No layout or schematic changes are needed for drop-in replacement in qualified designs.
What does the 'Q' suffix indicate in BC847BQ-7-F?
The 'Q' denotes AEC-Q101 qualification per the Diodes Incorporated automotive product line. This includes stress testing for temperature cycling, humidity bias, high-temperature operating life, and electrostatic discharge-ensuring reliability in automotive ECUs, ADAS sensors, and infotainment systems where failure modes carry safety implications.
Can BC847BQ-7-F replace BC847CQ-7-F in a circuit?
No-BC847CQ-7-F has hFE = 420–800, significantly higher than BC847BQ-7-F's 200–450. Substituting may cause overdrive in saturated switches or instability in emitter-follower buffers due to excessive loop gain. Always verify bias point and small-signal response before interchanging gain-bin variants.
BC847BQ-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- 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
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 200 @ 2mA, 5V
- Power - Max:
- 310 mW
- Frequency - Transition:
- 300MHz
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
BC847BQ-7-F FAQ
1.How can I place an order for BC847BQ-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BC847BQ-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 BC847BQ-7-F reliable?
The price and inventory of BC847BQ-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 BC847BQ-7-F is usually 5 days.
3.What payment methods are accepted for BC847BQ-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC847BQ-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC847BQ-7-F?
BC847BQ-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC847BQ-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 BC847BQ-7-F?
For technical support, including BC847BQ-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC847BQ-7-F requirements.
6.How does Aetrix verify that BC847BQ-7-F is sourced from the original manufacturer or authorized distributors?
All BC847BQ-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 BC847BQ-7-F meets industry standards.
7.What is the process for return or replacement of BC847BQ-7-F?
All BC847BQ-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BC847BQ-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 BC847BQ-7-F part is unused and in its original packaging.
Return procedure for BC847BQ-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC847BQ-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
-
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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