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Diodes Incorporated BC848CW-7-F
- Part No.:
- BC848CW-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
BC848CW-7-F.pdf
- Description:
- TRANS NPN 30V 0.1A SOT-323
- Quantity:
- Payment:
- Shipping:
Inventory:2,000
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Product details
Overview
BC848CW-7-F from Diodes Incorporated is an NPN small-signal transistor in SOT323 package, rated for VCEO = 30 V, IC = 100 mA, and hFE = 420–800 (Band C), optimized for switching and audio-frequency amplification in space-constrained PCBs.
For engineers reviewing the BC848CW-7-F datasheet, BC848CW-7-F pinout, BC848CW-7-F application, or BC848CW-7-F equivalent, key selection criteria include DC current gain group (C-band), low VCE(sat) at 10 mA/0.5 mA drive, ESD robustness (HBM 4 kV), thermal resistance (RθJA = 625 °C/W), and RoHS-compliant "Green" packaging.
Technical Context
This transistor operates as a general-purpose NPN switch or linear amplifier with fixed-emitter biasing capability. Its Band C hFE range (420–800) ensures consistent gain across production lots at IC = 2 mA and VCE = 5 V, supporting stable biasing in discrete amplifier stages and digital logic interface circuits.
Designed for surface-mount assembly on FR4 PCBs with minimum pad layout, it delivers predictable thermal derating (200 mW at 25 °C, down to 0 mW at 150 °C ambient) and exhibits fT ≥ 100 MHz, enabling reliable operation up to mid-VHF frequencies in RF detector or oscillator buffer roles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 30 V - Maximum collector-emitter voltage before breakdown under active switching conditions |
| IC | 100 mA - Continuous collector current rating defining safe DC load-handling capacity |
| hFE (Band C) | 420–800 - Confirmed DC current gain range at VCE = 5 V, IC = 2 mA for precise bias design |
| VCE(sat) | 90–250 mV - Saturation voltage at IC = 10 mA / IB = 0.5 mA, directly impacting power loss in switching mode |
| fT | 100–300 MHz - Minimum guaranteed transition frequency ensuring usable gain at 10–50 MHz signal paths |
| ESD HBM | 4,000 V - Human Body Model rating confirming robustness against handling-induced electrostatic discharge |
| RθJA | 625 °C/W - Junction-to-ambient thermal resistance on standard 1 oz copper single-sided FR4, used for thermal margin calculation |
Pinout & Package
Package: SOT323 - ultra-small plastic surface-mount package (2.15 mm × 2.10 mm × 0.95 mm), lead-free, halogen-free, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | E | Current sink terminal; connects to ground or low-side reference in common-emitter configurations |
| 2 (Base) | B | Control input; requires ~0.66 V forward bias and precise IB to achieve target IC in linear or saturated operation |
| 3 (Collector) | C | Current source terminal; ties to load or supply rail in switching applications; carries full output current |
Key Features
| Feature | Design Value |
|---|---|
| Band C hFE grouping | Guaranteed 420–800 gain at 2 mA/5 V enables repeatable bias point setting without trimming resistors |
| SOT323 footprint | Enables high-density placement in portable electronics and IoT sensor nodes where board area is constrained |
| Lead-free & "Green" compliance | Meets RoHS 3 (2015/863/EU), <900 ppm Br/Cl, <1000 ppm Sb - supports automotive and medical regulatory submissions |
| 4 kV HBM ESD rating | Reduces need for external protection diodes in handheld or field-deployed control interfaces |
Applications
| LED Driver Circuit | Microcontroller GPIO Interface |
|---|---|
Use Scenario: Driving 20 mA indicator LEDs from 3.3 V microcontroller outputs. IC Role / Device Role / Timing Role: NPN switch configured in common-emitter mode, sinking LED current to ground. Use Value: Low VCE(sat) (≤250 mV) minimizes voltage drop and heat generation at 20 mA, preserving LED brightness and MCU I/O margin. | Use Scenario: Level-shifting and current boosting between 1.8 V logic and 5 V peripheral enable lines. IC Role / Device Role / Timing Role: Discrete level translator with base driven by low-voltage GPIO, collector pulled to 5 V rail. Use Value: High hFE (≥420) ensures full saturation with ≤10 µA base drive, reducing loading on battery-sensitive logic outputs. |
| Audio Pre-amplifier Stage | Power Supply Enable Switch |
Use Scenario: Single-transistor common-emitter preamp for electret microphone signals in voice-recognition modules. IC Role / Device Role / Timing Role: Linear amplifier biased at IC = 2 mA, VCE = 5 V to maximize SNR and bandwidth. Use Value: fT ≥ 100 MHz and NF ≤ 10 dB support clean amplification of 20 Hz–20 kHz signals with minimal added noise. | Use Scenario: Enabling 12 V auxiliary rails in industrial controllers using 3.3 V FPGA outputs. IC Role / Device Role / Timing Role: High-side switch driver (with PNP complement) or low-side enable switch controlling PMOS gate. Use Value: 30 V VCEO and 100 mA IC safely handle gate charge/discharge currents for MOSFETs driving loads up to 5 W. |
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 |
|---|---|---|---|
| BC847CW-7-F | VCEO = 45 V, hFE = 420–800 (same band), slightly higher VCE(sat) at high IC | Better suited for 5–12 V rail switching where higher breakdown margin is needed | Select when system voltage exceeds 30 V but same gain and package are required |
| MMBT3904LT1G | VCEO = 40 V, hFE = 100–300 (lower gain band), SOT-23 package (larger footprint) | Lower gain necessitates larger base resistors; SOT-23 requires more PCB area than SOT323 | Choose only if legacy SOT-23 layout exists and gain tolerance >300 is acceptable |
Compared with BC847CW-7-F and MMBT3904LT1G, BC848CW-7-F offers the tightest combination of 30 V rating, ultra-compact SOT323 size, and highest guaranteed hFE band-making it optimal for miniaturized, high-gain, low-voltage switching designs where thermal and layout constraints dominate.
Availability
BC848CW-7-F is available at Aetrix Electronics and suitable for LED driver circuits, microcontroller interface logic, audio preamplifiers, and power supply enable switches requiring stable component supply and long-term manufacturability.
Supply support for BC848CW-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, industry-qualified components for automotive, industrial, and consumer markets.
This part belongs to the BC846–BC848 family of general-purpose NPN transistors, designed specifically for cost-sensitive, high-volume applications demanding consistent gain grouping, automated assembly compatibility, and environmental compliance.
FAQ
What is the maximum operating temperature for BC848CW-7-F?
The BC848CW-7-F has an operating junction temperature range of –65 °C to +150 °C. Its thermal resistance RθJA is 625 °C/W on standard FR4, so at 25 °C ambient, the maximum continuous power dissipation is 200 mW. Derating begins linearly above 25 °C, reaching zero at 150 °C ambient.
Is BC848CW-7-F qualified for automotive use?
No-BC848CW-7-F is not AEC-Q101 qualified. While Diodes offers automotive-grade versions of this family (e.g., BC848CWQ-7-F), the standard BC848CW-7-F is intended for commercial/industrial applications. For automotive designs, contact Diodes' automotive team for PPAP-capable, IATF 16949-manufactured variants.
How does the SOT323 package affect soldering and rework?
The SOT323 package uses matte tin-plated leads compliant with MIL-STD-202 Method 208. Its small pitch (0.65 mm) and low mass require precise reflow profiling: peak temperature ≤ 260 °C, time above liquidus 60–90 s. Hand soldering demands fine-tip irons and flux to avoid pad lifting or tombstoning due to thermal imbalance.
What marking code identifies BC848CW-7-F on the device body?
BC848CW-7-F is marked with "K1M" on the top surface of the SOT323 package. This code corresponds exclusively to the BC848CW variant per Diodes' ordering information table; "K1Q" denotes BC846/BC847AW, and "K1R" denotes BC846/BC847BW.
BC848CW-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):
- 30 V
- Vce Saturation (Max) @ Ib, Ic:
- 600mV @ 5mA, 100mA
- Current - Collector Cutoff (Max):
- 20nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 420 @ 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
BC848CW-7-F FAQ
1.How can I place an order for BC848CW-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BC848CW-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 BC848CW-7-F reliable?
The price and inventory of BC848CW-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 BC848CW-7-F is usually 5 days.
3.What payment methods are accepted for BC848CW-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC848CW-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC848CW-7-F?
BC848CW-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC848CW-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 BC848CW-7-F?
For technical support, including BC848CW-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC848CW-7-F requirements.
6.How does Aetrix verify that BC848CW-7-F is sourced from the original manufacturer or authorized distributors?
All BC848CW-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 BC848CW-7-F meets industry standards.
7.What is the process for return or replacement of BC848CW-7-F?
All BC848CW-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BC848CW-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 BC848CW-7-F part is unused and in its original packaging.
Return procedure for BC848CW-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC848CW-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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