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onsemi FSBCW30
- Part No.:
- FSBCW30
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
FSBCW30.pdf
- Description:
- TRANS PNP 32V 0.5A SOT-23-3
- Quantity:
- Payment:
- Shipping:
Inventory:5,911
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Product details
Overview
FSBCW30 from Fairchild Semiconductor is a PNP general-purpose amplifier transistor in SuperSOT™-3 package, rated for VCEO = 32 V, IC = 500 mA continuous, and TJ = –55 to +150 °C. It delivers hFE = 215–500 at IC = 2 mA, VCE = 5 V, and VCE(sat) = 0.30 V at IC = 10 mA / IB = 0.5 mA - used in medium-power switching and linear amplification stages of industrial control interfaces.
For engineers reviewing the FSBCW30 datasheet, pinout, applications, or equivalent options, key selection considerations include its PNP polarity, SuperSOT-3 thermal performance (RθJA = 250 °C/W), noise figure (10 dB @ 1 kHz), and guaranteed breakdown voltage across all three junctions (VCEO/VCBO/VCES = 32 V).
Technical Context
The FSBCW30 is fabricated on Fairchild's Process 68 and shares electrical characteristics with the BC857A family but is specifically rated for higher continuous collector current (500 mA vs. 100 mA typical for BC857A). Its PNP structure supports active-low switching and complementary pair design in discrete power stages.
Thermal derating is defined at 4 mW/°C above 25 °C ambient, with maximum power dissipation of 500 mW on FR-4 PCB (4.5" × 5", 0.02 in² 2 oz copper pad). Small-signal parameters include fT up to 40 MHz and NF = 10 dB under specified bias and source impedance conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 32 V - maximum safe collector-emitter voltage before breakdown in open-base configuration |
| IC (continuous) | 500 mA - continuous DC collector current handling capability at TA = 25 °C |
| hFE | 215–500 - DC current gain range at VCE = 5 V, IC = 2 mA, enabling predictable biasing in amplifier designs |
| VCE(sat) | 0.30 V - low saturation voltage at IC = 10 mA / IB = 0.5 mA, minimizing conduction loss in switching applications |
| RθJA | 250 °C/W - junction-to-ambient thermal resistance on standard FR-4 board, defining heatsinking requirements |
| NF | 10 dB - noise figure at 1 kHz, 200 Hz bandwidth, 2 kΩ source resistance, suitable for low-noise preamp stages |
Pinout & Package
FSBCW30 is housed in SuperSOT™-3 surface-mount package (3-terminal, single-row, gull-wing leads), optimized for high thermal efficiency and board space reduction versus TO-92 or SOT-23.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| C (Collector) | Main current sink terminal | Connected to load or higher-voltage rail in PNP switching configurations; thermally coupled to package tab |
| B (Base) | Control input for current amplification | Receives forward-biased drive to enable conduction; requires current-limiting resistor in most applications |
| E (Emitter) | Current source terminal | Typically tied to supply rail in common-emitter switches; defines reference for VBE and VCE measurements |
Key Features
| Feature | Design Value |
|---|---|
| High hFE range (215–500) | Enables stable DC biasing across process and temperature variations without feedback compensation |
| Low VCE(sat) (0.30 V) | Reduces power loss and self-heating in saturated-switch operation at 10 mA load |
| Guaranteed 32 V breakdown (VCEO, VCBO, VCES) | Ensures robustness against transient overvoltage in 24 V industrial bus interfaces |
| SuperSOT™-3 package | Delivers 250 °C/W RθJA on standard FR-4 - superior thermal performance vs. SOT-23 for same footprint |
Applications
| Industrial Relay Drivers | Low-Noise Audio Preamps |
|---|---|
Use Scenario: Driving 24 V DC relay coils in PLC output modules with microcontroller GPIO-level base drive. IC Role / Device Role / Timing Role: PNP switch providing inverted logic-level interface and current gain to energize coil loads up to 500 mA. Use Value: Low VCE(sat) minimizes heat rise during sustained coil hold; guaranteed 32 V VCEO withstands inductive kickback without snubber. | Use Scenario: First-stage amplification in battery-powered instrumentation front-ends requiring sub-15 dB noise floor. IC Role / Device Role / Timing Role: Discrete PNP small-signal amplifier configured in common-emitter topology with emitter degeneration. Use Value: 10 dB noise figure at 1 kHz and stable hFE support high SNR in low-frequency sensor signal conditioning. |
| Complementary BJT Pairs | Power Supply Enable Circuits |
Use Scenario: Paired with NPN counterpart (e.g., FSBF30) in Class AB audio output stages or H-bridge drivers. IC Role / Device Role / Timing Role: PNP half of matched complementary pair delivering symmetrical sourcing/sinking capability. Use Value: Matching VCE(sat) and hFE range enables balanced crossover behavior and reduced distortion in analog output stages. | Use Scenario: Enabling/disabling 12 V auxiliary rails in embedded systems using MCU-controlled base drive. IC Role / Device Role / Timing Role: High-side PNP pass transistor controlled via open-collector driver or level-shifting circuit. Use Value: 500 mA IC rating supports moderate rail currents; SuperSOT-3 footprint simplifies layout in space-constrained power domains. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP general-purpose amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BC857B | Lower IC rating (100 mA), same hFE range (220–475), SOT-23 package | Not suitable for >200 mA continuous loads; limited thermal margin in high-ambient environments | Select BC857B only for low-current signal switching where board space is critical and power dissipation <100 mW |
| MMBT3906 | Same VCEO (40 V), lower hFE (100–300), higher VCE(sat) (0.4 V min), SOT-23 | Higher saturation loss and narrower gain range reduce linearity in analog amplifiers | Prefer MMBT3906 when higher breakdown margin is needed and gain stability is secondary to cost |
Compared with BC857B and MMBT3906, the FSBCW30 provides 5× higher continuous current capability and superior thermal resistance in SuperSOT-3, making it optimal for industrial switching where reliability under sustained load matters more than minimal footprint.
Availability
FSBCW30 is available at Aetrix Electronics and suitable for industrial relay drivers, low-noise audio preamps, complementary BJT pairs, and power supply enable circuits requiring stable component supply and long-term manufacturability.
Supply support for FSBCW30 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
Fairchild Semiconductor was a leading designer of discrete semiconductors and power management ICs, acquired by ON Semiconductor in 2016; its legacy products remain widely deployed in industrial and automotive systems.
The FSBCW30 belongs to Fairchild's general-purpose PNP transistor product line, engineered for medium-power linear amplification and switching in harsh-temperature industrial environments.
FAQ
What is the maximum continuous collector current rating for FSBCW30?
The FSBCW30 is rated for 500 mA continuous collector current at TA = 25 °C. Derating applies above 25 °C at 4 mW/°C, and operation must stay within the safe operating area defined by VCEO, IC, and power limits. The FSBCW30 datasheet specifies this value under steady-state conditions with proper PCB thermal management.
Is FSBCW30 pin-compatible with BC857A or BC857B?
No, FSBCW30 is not pin-compatible with BC857A or BC857B. While both are PNP transistors, FSBCW30 uses SuperSOT™-3 packaging with C-B-E pinout, whereas BC857x devices use SOT-23 with E-B-C ordering. Physical layout and solder pad patterns differ, requiring PCB redesign for substitution.
What is the typical noise figure of FSBCW30 and under what conditions is it measured?
The FSBCW30 has a typical noise figure of 10 dB, measured at VCE = 5.0 V, IC = 200 µA, RS = 2.0 kΩ, f = 1.0 kHz, and BW = 200 Hz. This value reflects its suitability for low-frequency, low-noise amplification tasks where signal integrity is critical, such as sensor front-ends.
Does FSBCW30 meet automotive AEC-Q101 qualification?
No, FSBCW30 is not AEC-Q101 qualified. It is specified for industrial-grade operation (–55 to +150 °C junction temperature) but lacks the stress testing, failure analysis, and documentation required for automotive qualification. For AEC-Q101 applications, consult ON Semiconductor's automotive-grade PNP portfolio.
What is the thermal resistance (RθJA) of FSBCW30 and how is it measured?
The FSBCW30 has a thermal resistance RθJA of 250 °C/W, measured with the device mounted on a standard FR-4 PCB (4.5" × 5") with a 0.02 in² mounting pad of 2 oz copper. This value defines the temperature rise per watt of dissipated power under those specific board-level thermal conditions.
FSBCW30 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Transistor Type:
- PNP
- Current - Collector (Ic) (Max):
- 500 mA
- Voltage - Collector Emitter Breakdown (Max):
- 32 V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 500µA, 10mA
- Current - Collector Cutoff (Max):
- 100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 215 @ 2mA, 5V
- Power - Max:
- 500 mW
- Frequency - Transition:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
FSBCW30 FAQ
1.How can I place an order for FSBCW30 through Aetrix?
Please submit a Request for Quotation (RFQ) for FSBCW30 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 FSBCW30 reliable?
The price and inventory of FSBCW30 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FSBCW30 is usually 5 days.
3.What payment methods are accepted for FSBCW30?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FSBCW30 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FSBCW30?
FSBCW30 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FSBCW30 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 FSBCW30?
For technical support, including FSBCW30 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FSBCW30 requirements.
6.How does Aetrix verify that FSBCW30 is sourced from the original manufacturer or authorized distributors?
All FSBCW30 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 FSBCW30 meets industry standards.
7.What is the process for return or replacement of FSBCW30?
All FSBCW30 units undergo pre-shipment inspection (PSI). If there is an issue with FSBCW30, 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 FSBCW30 part is unused and in its original packaging.
Return procedure for FSBCW30:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
FSBCW30 Tags
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