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Nexperia USA Inc. BC847C,235
- Part No.:
- BC847C,235
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BC847C,235.pdf
- Description:
- TRANS NPN 45V 0.1A TO-236AB
- Quantity:
- Payment:
- Shipping:
Inventory:42,192
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Product details
Overview
BC847C,235 from Nexperia is an NPN general-purpose transistor in SOT23 (TO-236AB) package, rated for 45 V VCEO, 100 mA IC, and DC current gain (hFE) of 420–800 at VCE = 5 V and IC = 2 mA. It serves as a low-voltage switching or small-signal amplification device in consumer power management, LED driver biasing, and sensor interface stages.
For engineers reviewing the BC847C,235 datasheet, BC847C,235 pinout, BC847C,235 application, or BC847C,235 equivalent, key selection criteria include its guaranteed hFE range, SOT23 thermal resistance (500 K/W), VCE(sat) ≤ 400 mV at IC = 100 mA / IB = 5 mA, and non-automotive qualification status per Rev. 13 (2022).
Technical Context
The BC847C,235 operates as a silicon planar epitaxial NPN transistor with open-base collector-emitter breakdown voltage of 45 V and emitter-base breakdown voltage of 6 V. Its hFE is binned to 420–800, distinguishing it from BC847A (110–220) and BC847B (200–450) variants in the same series.
Thermal performance is defined for FR4 PCB mounting: Rth(j-a) = 500 K/W, Ptot = 250 mW at Tamb ≤ 25 °C, with junction temperature limited to 150 °C. Saturation behavior is characterized at two drive conditions: IC/IB = 20 yields VCE(sat) ≤ 400 mV, while IC/IB = 10 yields VBE(sat) ≤ 900 mV.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 45 V - Maximum safe collector-emitter voltage with base open; defines upper rail limit in low-side switch designs. |
| IC | 100 mA continuous - Absolute max collector current; usable up to ~80 mA in sustained operation on standard FR4. |
| hFE | 420–800 at VCE = 5 V, IC = 2 mA - High-gain bin enabling low-base-drive designs in linear amplifiers or precision switches. |
| VCE(sat) | ≤ 400 mV at IC = 100 mA, IB = 5 mA - Ensures <100 mW dissipation in saturated switching, critical for thermally constrained PCBs. |
| Ptot | 250 mW at Tamb = 25 °C - Power limit on standard FR4; derates to ~125 mW at 70 °C ambient. |
| fT | 100 MHz - Supports audio-frequency amplification and fast digital switching up to ~10 MHz with adequate gain margin. |
| Rth(j-a) | 500 K/W - Thermal resistance confirms need for copper pour or thermal relief reduction if operating >50 mW continuously. |
Pinout & Package
SOT23 (TO-236AB) plastic surface-mounted package with 3 leads; 1.9 mm × 1.1 mm footprint, 1.3 mm height, and gull-wing lead form optimized for reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base (B) | Current-controlled input node; requires series resistor to limit IB and ensure saturation under worst-case hFE and temperature. |
| 2 | Emitter (E) | Reference terminal for bias network; connected to ground or low-impedance return path in common-emitter configurations. |
| 3 | Collector (C) | Output current sink node; routed to load (e.g., LED anode, relay coil, logic gate input) with appropriate pull-up or supply tie. |
Key Features
| Feature | Design Value |
|---|---|
| Three hFE bins (A/B/C) | Enables precise gain matching across production lots-BC847C supports high-loop-gain feedback paths without trimming. |
| SOT23 package | 0.65 mm pitch, 1.9 mm × 1.1 mm footprint-compatible with high-density layouts and automated placement; no lead-forming required. |
| VBE = 660 mV typ. at IC = 10 mA | Stable turn-on threshold enables predictable biasing in Class-A amplifiers and constant-current source designs. |
| Low Cc = 1.5 pF | Minimizes Miller effect in high-frequency amplifier stages; preserves bandwidth in active filters and RF detector front-ends. |
| Non-automotive qualification | Meets industrial-grade reliability (−65 °C to +150 °C Tstg/Tj) but excludes AEC-Q101 testing-suitable for commercial/industrial end equipment only. |
Applications
| LED Driver Biasing | Microcontroller GPIO Interface |
|---|---|
|
Use Scenario: Driving 20 mA indicator LEDs from 3.3 V or 5 V MCU outputs via single-transistor switch. IC Role / Device Role / Timing Role: Low-side NPN switch translating logic-level signals into higher-current LED paths. Use Value: Guaranteed hFE ≥ 420 ensures full saturation with ≤1 mA base drive, minimizing GPIO loading and preserving timing margins. |
Use Scenario: Level-shifting or current-boosting between 1.8 V/3.3 V microcontrollers and 5 V peripherals (e.g., legacy sensors, displays). IC Role / Device Role / Timing Role: Active pull-down element enabling bidirectional signal conditioning without external resistors. Use Value: VCE(sat) ≤ 400 mV maintains <0.5 V drop across switch, ensuring clean low-state definition for TTL-compatible inputs. |
| Audio Pre-amplifier Stage | Power Supply Enable Control |
|
Use Scenario: Single-stage common-emitter amplifier for electret microphone output or piezo sensor signals in portable audio devices. IC Role / Device Role / Timing Role: Small-signal voltage amplifier with fixed bias network and emitter degeneration. Use Value: fT = 100 MHz and NF = 2–10 dB support 20 kHz bandwidth with SNR > 60 dB using standard RC coupling. |
Use Scenario: Enabling/disabling 12 V auxiliary rails (e.g., motor drivers, analog front-ends) using 3.3 V logic control signals. IC Role / Device Role / Timing Role: High-side enable switch (with PNP complement) or low-side safety cutoff in power sequencing circuits. Use Value: 45 V VCEO headroom accommodates transient spikes on 12 V lines; 100 mA rating covers standby current of most sub-systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN general-purpose transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BC847BW,115 | Same hFE range (420–800) but in SOT323 package; 50% smaller footprint, 300 mW Ptot, Rth(j-a) = 625 K/W. | Higher density layouts where thermal budget allows; unsuitable for >60 mA continuous due to reduced power handling. | Select when board space is constrained and peak IC remains <60 mA; verify thermal relief on SOT323 pads. |
| MMBT3904LT1G | hFE = 100–300 (lower gain bin); VCEO = 40 V; VCE(sat) = 300 mV @ IC/IB = 10; TO-236AB compatible. | Lower gain requires higher base drive; tighter VCEO margin limits use in 36 V systems; widely available automotive-grade variant exists. | Choose for cost-sensitive, non-critical switching where gain tolerance >300 is acceptable and 40 V rating suffices. |
Compared with BC847C,235, BC847BW,115 trades thermal robustness for miniaturization, while MMBT3904LT1G offers broader supply-chain availability at the expense of guaranteed high hFE and 45 V headroom-critical for noise-immune sensor interfaces and 36 V industrial bus nodes.
Availability
BC847C,235 is available at Aetrix Electronics and suitable for LED driver biasing, microcontroller GPIO interfacing, audio pre-amplifier stages, and power supply enable control requiring stable component supply across industrial and consumer production cycles.
Supply support for BC847C,235 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
Nexperia is a global semiconductor expert headquartered in Nijmegen, Netherlands, specializing in high-volume, high-reliability discrete and logic devices for industrial, computing, and consumer markets.
The BC847x series targets cost-sensitive, space-constrained applications needing reliable general-purpose switching and amplification-designed for manufacturability, consistent binning, and compatibility with standard SMT assembly processes.
FAQ
Is BC847C,235 qualified for automotive applications?
No. Per Nexperia's Rev. 13 datasheet (July 2022), BC847C,235 is explicitly designated as non-automotive qualified. It lacks AEC-Q101 stress testing and is intended for industrial and commercial use only. Automotive alternatives include BC847C-Q series variants with full qualification documentation.
What is the maximum allowable base current for continuous operation?
The absolute maximum peak base current is 100 mA (single pulse, tp ≤ 1 ms), but continuous operation must respect the total power dissipation limit. At IC = 100 mA and hFE = 420, IB ≈ 238 µA; practical design uses 1–5 mA with series resistor to ensure saturation across temperature and process variation.
How does thermal resistance change with PCB copper area?
Rth(j-a) = 500 K/W is specified for FR4 with single-sided 1 oz copper, standard footprint, and no thermal vias. Adding 10 mm² copper pour reduces it to ~350 K/W; 25 mm² with 4 thermal vias achieves ~220 K/W-enabling ~180 mW continuous dissipation at 25 °C ambient.
Can BC847C,235 replace BC847B in existing designs?
Yes, with verification. BC847C has higher hFE (420–800 vs. 200–450), which may reduce required base drive and improve saturation margin-but can also increase sensitivity to leakage currents in high-impedance bias networks. Confirm VCE(sat) and switching speed meet timing requirements under worst-case conditions.
BC847C,235 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- 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:
- 400mV @ 5mA, 100mA
- Current - Collector Cutoff (Max):
- 15nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 420 @ 2mA, 5V
- Power - Max:
- 250 mW
- Frequency - Transition:
- 100MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
BC847C,235 FAQ
1.How can I place an order for BC847C,235 through Aetrix?
Please submit a Request for Quotation (RFQ) for BC847C,235 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 BC847C,235 reliable?
The price and inventory of BC847C,235 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC847C,235 is usually 5 days.
3.What payment methods are accepted for BC847C,235?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC847C,235 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC847C,235?
BC847C,235 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC847C,235 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 BC847C,235?
For technical support, including BC847C,235 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC847C,235 requirements.
6.How does Aetrix verify that BC847C,235 is sourced from the original manufacturer or authorized distributors?
All BC847C,235 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 BC847C,235 meets industry standards.
7.What is the process for return or replacement of BC847C,235?
All BC847C,235 units undergo pre-shipment inspection (PSI). If there is an issue with BC847C,235, 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 BC847C,235 part is unused and in its original packaging.
Return procedure for BC847C,235:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC847C,235 Tags
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MMBT3904-7-F
Diodes Incorporated
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MMBT3904LT1G
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Diodes Incorporated
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MMBT3904-TP
Micro Commercial Co
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MMBT2222A-7-F
Diodes Incorporated
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BC847B,215
Nexperia USA Inc.
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SMMBT3904LT1G
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MMBT2222A-TP
Micro Commercial Co
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