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Nexperia USA Inc. BC847AW,135
- Part No.:
- BC847AW,135
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
BC847AW,135.pdf
- Description:
- TRANS NPN 45V 0.1A SOT-323
- Quantity:
- Payment:
- Shipping:
Inventory:8,830
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Product details
Overview
BC847AW,135 from Nexperia is an NPN general-purpose transistor in SOT323 (SC-70) package, rated for 45 V VCEO, 100 mA IC, and DC current gain (hFE) of 110–220 at IC = 2 mA and VCE = 5 V. It serves as a low-power switching or small-signal amplification device in compact consumer and industrial PCBs.
For engineers reviewing the BC847AW,135 datasheet, BC847AW,135 pinout, BC847AW,135 application, or BC847AW,135 equivalent, key selection criteria include its SOT323 footprint compatibility, guaranteed hFE range, VCEO/VCBO ratings, thermal resistance (Rth(j-a) = 625 K/W), and JEITA-compliant marking code "1E%".
Technical Context
The BC847AW 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 110–220, enabling predictable biasing in linear amplifiers and reliable saturation in digital switch configurations with IC/IB = 10–20.
Thermal performance is defined for FR4 PCB mounting with single-sided copper and standard footprint, delivering Rth(j-a) = 625 K/W in free air. Saturation voltages are specified at two operating points: VCE(sat) ≤ 400 mV (IC = 100 mA, IB = 5 mA) and ≤ 700 mV (IC = 10 mA, IB = 0.5 mA), supporting both high-current and low-power switching.
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-voltage switching stages. |
| IC | 100 mA continuous - Absolute maximum DC collector current; sets usable load drive capability in signal-level circuits. |
| hFE | 110–220 at VCE = 5 V, IC = 2 mA - Tight gain bin ensures consistent base drive requirements across production lots. |
| VCE(sat) | ≤ 400 mV at IC = 100 mA, IB = 5 mA - Enables low-loss switching in battery-powered logic interfaces and LED drivers. |
| Rth(j-a) | 625 K/W - Thermal resistance on standard FR4 PCB; informs derating above 25 °C ambient for sustained operation. |
| VEB(O) | 6 V - Emitter-base reverse breakdown rating; constrains allowable negative base drive or AC-coupled input swing. |
Pinout & Package
SOT323 (SC-70) plastic surface-mounted package: 1.35 mm × 1.75 mm footprint, 0.95 mm height, 3-terminal leadless design optimized for high-density routing and 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. |
| 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., relay coil, LED anode) with appropriate pull-up or supply decoupling. |
Key Features
| Feature | Design Value |
|---|---|
| Three hFE bins (W/AW/BW/CW) | Enables precise gain matching in analog stages and consistent switching thresholds across production batches. |
| SOT323 (SC-70) package | Reduces board area by >50% vs. SOT23; supports 0.5 mm pitch reflow and wave soldering per IPC-7351B. |
| VCEO = 45 V, VCBO = 50 V | Provides 10% margin over common 3.3 V/5 V/12 V rails; suitable for mixed-supply interface and level-shifting circuits. |
| JEITA-compliant marking "1E%" | Enables automated optical inspection (AOI) traceability and unambiguous identification on assembled PCBs. |
Applications
| LED Driver Circuit | Microcontroller GPIO Expander |
|---|---|
|
Use Scenario: Driving discrete indicator LEDs from 3.3 V or 5 V MCU outputs with current limiting. IC Role / Device Role / Timing Role: NPN switch sinking LED cathode current; configured in common-emitter mode with base driven by GPIO. Use Value: VCE(sat) ≤ 400 mV ensures <100 mW dissipation at 100 mA, minimizing self-heating and preserving LED forward voltage margin. |
Use Scenario: Extending digital output count of resource-constrained microcontrollers via discrete transistor arrays. IC Role / Device Role / Timing Role: Low-gain switching element translating logic-high signals into higher-current loads (e.g., relays, solenoids). Use Value: Guaranteed hFE ≥ 110 allows robust base drive with 10 kΩ pull-up resistors, reducing MCU pin loading and simplifying firmware timing. |
| Audio Pre-amplifier Stage | Power Supply Enable Control |
|
Use Scenario: Low-noise small-signal amplification in portable audio front-ends (e.g., electret microphone biasing). IC Role / Device Role / Timing Role: Common-emitter amplifier biased at IC = 1–2 mA; leverages flat hFE response and fT ≥ 100 MHz. Use Value: NF = 2–10 dB at 1 kHz enables SNR > 60 dB in battery-powered audio paths without active feedback compensation. |
Use Scenario: Enabling/disabling auxiliary power rails (e.g., 3.3 V LDO output) using MCU-controlled enable lines. IC Role / Device Role / Timing Role: High-side or low-side enable switch controlling PMOS/NMOS gate drive or LDO EN pin. Use Value: VCEO = 45 V supports direct control of up to 24 V auxiliary supplies; ICM = 200 mA accommodates inrush during rail startup. |
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 |
|---|---|---|---|
| BC847B,135 | hFE = 200–450 (higher gain bin); identical VCEO, IC, and package. | Better suited for low-base-drive amplification where tighter hFE tolerance improves linearity. | Select when circuit requires higher current gain stability at IC = 10 mA and lower base resistor values. |
| MMBT3904LT1G | hFE = 100–300; same SOT23 package but larger footprint than SOT323; VCEO = 40 V. | Compatible for space-tolerant designs; lower VCEO limits use in 12 V+ systems. | Choose only if SOT23 layout exists and 40 V rating suffices; not drop-in due to mechanical mismatch. |
Compared with BC847B,135, the BC847AW,135 offers lower and more tightly bounded hFE, improving predictability in fixed-bias switches; versus MMBT3904LT1G, it delivers superior voltage margin and 30% smaller PCB area, critical for ultra-compact wearables and IoT sensors.
Availability
BC847AW,135 is available at Aetrix Electronics and suitable for LED driver circuits, microcontroller GPIO expansion, audio pre-amplifier stages, and power supply enable control requiring stable component supply and JEITA-compliant traceability.
Supply support for BC847AW,135 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 focused on high-volume, high-reliability discrete and logic devices, with leadership in automotive, industrial, and mobile applications.
The BC847xW series targets cost-sensitive, space-constrained consumer and industrial electronics needing proven general-purpose transistors with standardized SMD packaging and JEDEC-compliant reliability.
FAQ
What is the maximum junction temperature and how does it affect continuous operation?
The BC847AW,135 has a maximum junction temperature (Tj) of 150 °C. At ambient temperatures above 25 °C, power dissipation must be derated linearly using Rth(j-a) = 625 K/W. For example, at 70 °C ambient, maximum allowable Ptot drops to 120 mW to maintain Tj ≤ 150 °C, directly limiting usable collector current in sustained switching.
Is BC847AW,135 suitable for automotive applications?
No. The BC847AW,135 is explicitly non-automotive qualified per Nexperia's revision history (v.13, July 2022), which states product qualification was reduced to industrial/commercial grade. Automotive alternatives require -Q suffix variants (e.g., BC847BW-Q) and separate AEC-Q101 qualification documentation.
How does the "1E%" marking code correlate to the BC847AW part number?
The "1E%" marking is JEITA-standardized for BC847AW in SOT323: "1E" identifies the type number, while "%" is a placeholder for the manufacturing site code (e.g., "A" for Nijmegen, "B" for Bangkok). This enables full lot traceability and distinguishes it from BC847W ("1H%") and BC847BW ("1F%") on-board.
Can BC847AW,135 replace BC847W in existing designs?
Yes, electrically - both share identical VCEO, IC, and package - but BC847AW's hFE (110–220) is narrower than BC847W's (110–800). In fixed-bias circuits, this reduces risk of overdrive and thermal runaway; however, gain-sensitive analog stages may require minor base resistor adjustment to maintain Q-point.
BC847AW,135 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BC847xW
- 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):
- 45 V
- Vce Saturation (Max) @ Ib, Ic:
- 400mV @ 5mA, 100mA
- Current - Collector Cutoff (Max):
- 15nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 110 @ 2mA, 5V
- Power - Max:
- 200 mW
- Frequency - Transition:
- 100MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
BC847AW,135 FAQ
1.How can I place an order for BC847AW,135 through Aetrix?
Please submit a Request for Quotation (RFQ) for BC847AW,135 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 BC847AW,135 reliable?
The price and inventory of BC847AW,135 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC847AW,135 is usually 5 days.
3.What payment methods are accepted for BC847AW,135?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC847AW,135 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC847AW,135?
BC847AW,135 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC847AW,135 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 BC847AW,135?
For technical support, including BC847AW,135 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC847AW,135 requirements.
6.How does Aetrix verify that BC847AW,135 is sourced from the original manufacturer or authorized distributors?
All BC847AW,135 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 BC847AW,135 meets industry standards.
7.What is the process for return or replacement of BC847AW,135?
All BC847AW,135 units undergo pre-shipment inspection (PSI). If there is an issue with BC847AW,135, 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 BC847AW,135 part is unused and in its original packaging.
Return procedure for BC847AW,135:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC847AW,135 Tags
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Diodes Incorporated
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Diodes Incorporated
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Micro Commercial Co
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MMBT2222A-7-F
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BC847B,215
Nexperia USA Inc.
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