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Diodes Incorporated BC848CQ-7-F
- Part No.:
- BC848CQ-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BC848CQ-7-F.pdf
- Description:
- TRANS NPN 30V 0.1A SOT-23-3
- Quantity:
- Payment:
- Shipping:
Inventory:5,636
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Product details
Overview
BC848CQ-7-F from Diodes Incorporated is an NPN small-signal transistor in SOT23 package, rated for VCEO = 30 V, IC = 100 mA, and hFE = 420–800 at IC = 2 mA, used in low-power switching and audio-frequency amplification stages of consumer and industrial control circuits.
For engineers reviewing the BC848CQ-7-F datasheet, BC848CQ-7-F pinout, BC848CQ-7-F application, or BC848CQ-7-F equivalent, this page delivers verified electrical parameters, thermal derating behavior, SOT23 terminal mapping, automotive-grade qualification status, and direct alternatives with documented gain/voltage trade-offs.
Technical Context
This transistor operates as a general-purpose NPN bipolar junction device optimized for linear amplification and saturated switching. Its fT = 100–300 MHz supports AF and low-speed digital signal conditioning, while VBE(sat) ≤ 900 mV at IC = 100 mA enables efficient drive in 3.3 V/5 V logic interfaces.
Thermal design is constrained by RθJA = 357 °C/W on 15 mm × 15 mm 1 oz copper, requiring power derating above +70 °C ambient. ESD robustness includes HBM = 4 kV and MM = 400 V, meeting industrial handling requirements without additional protection circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 30 V - Maximum collector-emitter voltage before breakdown under active bias; sets upper rail limit for 24 V system switches. |
| IC (continuous) | 100 mA - Safe DC collector current; supports relay drivers, LED buffers, and sensor interface preamps without heatsinking. |
| hFE (min/typ/max) | 420/520/800 - High DC current gain at 2 mA; reduces base drive current demand in battery-powered microcontroller GPIO interfaces. |
| fT | 100–300 MHz - Gain-bandwidth product; enables stable operation up to ~10 MHz in common-emitter amplifier configurations. |
| VCE(sat) | 90–600 mV - Low saturation voltage at IC/IB = 10 mA/0.5 mA; minimizes conduction loss in discrete logic-level switches. |
| RθJA | 357 °C/W - Junction-to-ambient thermal resistance on 15 mm × 15 mm PCB copper; defines maximum allowable power at given ambient temperature. |
Pinout & Package
Package: SOT23 - Surface-mount plastic package with 3 terminals, 0.008 g mass, UL 94V-0 flammability rating, and matte tin-plated leads compliant with MIL-STD-202 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Current sink node | Connected to ground or low-side return path; determines polarity and current direction in switching topologies. |
| 2 (Base) | Control input | Receives current-limited drive from MCU GPIO or resistor network; requires ≥580 mV VBE(on) to initiate conduction. |
| 3 (Collector) | Current source node | Connected to load (e.g., LED, relay coil); carries full switched current and must withstand VCEO = 30 V transient stress. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive-compliant variant | BC848CQ-7-F meets AEC-Q101 stress test requirements for temperature cycling, humidity, and mechanical shock. |
| Green compound packaging | Molded plastic with <900 ppm Br, <900 ppm Cl, <1000 ppm Sb - satisfies RoHS 3 and halogen-free compliance mandates. |
| High hFE grade C | Minimum hFE = 420 at 2 mA ensures consistent turn-on across production lots without base-current trimming. |
| Low VCE(sat) | ≤250 mV at IC = 10 mA / IB = 0.5 mA reduces power dissipation in always-on bias networks. |
Applications
| Industrial Sensor Interface | Automotive Cabin Lighting Control |
|---|---|
|
Use Scenario: Amplifying low-level analog output from thermistors or potentiometers in PLC I/O modules. IC Role / Device Role / Timing Role: NPN emitter-follower buffer providing impedance transformation and current gain without inversion. Use Value: High hFE (420–800) maintains signal fidelity at µA-level source currents, reducing loading error on high-Z sensors. |
Use Scenario: Switching 12 V LED strips in vehicle interior lighting systems with PWM dimming. IC Role / Device Role / Timing Role: Low-side saturated switch controlled by CAN/LIN microcontroller GPIO pins. Use Value: VCE(sat) ≤ 250 mV at 10 mA drive ensures <2.5 mW conduction loss per channel, minimizing thermal rise in sealed enclosures. |
| Consumer Audio Preamp Stage | IoT Node Power Sequencing |
|
Use Scenario: First-stage amplification in portable speaker line-input circuits operating from single 3.3 V supply. IC Role / Device Role / Timing Role: Common-emitter small-signal amplifier biased at IC = 2 mA for optimal fT and noise figure. Use Value: NF = 2–10 dB at 1 kHz enables clean amplification of line-level signals without audible hiss in battery-powered devices. |
Use Scenario: Enabling/disabling auxiliary power rails (e.g., RF module, sensor hub) during wake/sleep transitions in battery-operated edge nodes. IC Role / Device Role / Timing Role: Discrete enable switch replacing dedicated load switch ICs to reduce BOM cost and footprint. Use Value: SOT23 footprint and 100 mA rating support sequencing of multiple 3.3 V/5 V sub-systems with <1 ms turn-on delay. |
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 |
|---|---|---|---|
| BC847CQ-7-F | VCEO = 45 V, hFE = 420–800, same SOT23 package | Higher voltage margin supports 36 V industrial bus interfaces where 30 V headroom is insufficient | Select when VCE transients exceed 25 V or when legacy designs require backward-compatible gain binning |
| MMBT3904-7-F | VCEO = 40 V, hFE = 100–300 (lower gain), same SOT23 | Lower hFE requires higher base drive current; suited for high-speed switching over amplification | Prefer for 10–100 MHz digital signal routing where gain consistency matters less than transition speed |
Compared with BC848CQ-7-F, BC847CQ-7-F offers 15 V higher VCEO with identical gain and footprint, while MMBT3904-7-F trades gain for wider voltage range and faster switching-making each suitable for distinct voltage, gain, and speed priorities.
Availability
BC848CQ-7-F is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive cabin lighting control, and IoT node power sequencing requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BC848CQ-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 1959.
The BC846A–BC848C series targets cost-sensitive, space-constrained applications needing AEC-Q101 qualified NPN transistors with guaranteed gain bins and green packaging-designed specifically for automotive body electronics and industrial control modules.
FAQ
Is BC848CQ-7-F qualified to AEC-Q101?
Yes, BC848CQ-7-F is explicitly designated as the automotive-compliant version of the BC848C family, tested per AEC-Q101 Rev D for stress tests including temperature cycling, high-temperature operating life, and ESD. The "Q" suffix confirms qualification, and the datasheet DS11108 Rev 28 lists it under automotive-compliant part numbers.
What is the marking code for BC848CQ-7-F on the SOT23 package?
The top-side marking is "K1M", as confirmed in the Ordering Information table of DS11108 Rev 28. This 3-character code identifies the BC848C gain bin and distinguishes it from BC847C (also K1M) and BC846 variants (K1Q/K1R). Date codes follow the YM format per the datasheet's marking key.
Can BC848CQ-7-F replace BC848C-7-F in non-automotive designs?
Yes-BC848CQ-7-F shares identical electrical specifications, SOT23 package, pinout, and marking (K1M) with BC848C-7-F. The "Q" denotes AEC-Q101 qualification but does not alter performance; it adds test documentation and traceability required for automotive use, making it fully compatible in industrial and consumer applications.
What is the maximum safe continuous power dissipation at +85°C ambient?
Using the derating curve in Figure 2 of DS11108 Rev 28, PD drops linearly from 350 mW at +25°C to 0 W at +150°C. At +85°C, derated PD = 350 mW × (1 − (85−25)/125) = 350 × 0.52 = 182 mW. This assumes mounting on 15 mm × 15 mm 1 oz copper per Note 6.
BC848CQ-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):
- 30 V
- Vce Saturation (Max) @ Ib, Ic:
- 600mV @ 5mA, 100mA
- Current - Collector Cutoff (Max):
- 15nA
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 420 @ 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
BC848CQ-7-F FAQ
1.How can I place an order for BC848CQ-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BC848CQ-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 BC848CQ-7-F reliable?
The price and inventory of BC848CQ-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 BC848CQ-7-F is usually 5 days.
3.What payment methods are accepted for BC848CQ-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC848CQ-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC848CQ-7-F?
BC848CQ-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC848CQ-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 BC848CQ-7-F?
For technical support, including BC848CQ-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC848CQ-7-F requirements.
6.How does Aetrix verify that BC848CQ-7-F is sourced from the original manufacturer or authorized distributors?
All BC848CQ-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 BC848CQ-7-F meets industry standards.
7.What is the process for return or replacement of BC848CQ-7-F?
All BC848CQ-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BC848CQ-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 BC848CQ-7-F part is unused and in its original packaging.
Return procedure for BC848CQ-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC848CQ-7-F Tags
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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
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