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Product Detailed Parameters
- Description：RF TRANS NPN 15V 1.1GHZ TO-92-3
- Series：-
- Mfr：Fairchild Semiconductor
- Package：Bulk
- Transistor Type：NPN
- Voltage - Collector Emitter Breakdown (Max)：15V
- Frequency - Transition：1.1GHz
- Noise Figure (dB Typ @ f)：-
- Gain：-
- Power - Max：400mW
- DC Current Gain (hFE) (Min) @ Ic, Vce：72 @ 1mA, 5V
- Current - Collector (Ic) (Max)：50mA
- Operating Temperature：150°C (TJ)
- Mounting Type：Through Hole
- Package / Case：TO-226-3, TO-92-3 (TO-226AA)
- Supplier Device Package：TO-92-3
- Grade：-
- Qualification：-
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Overview
The SS9018GBU is an NPN silicon epitaxial planar transistor manufactured by Fairchild Semiconductor, housed in a SOT-23 surface-mount package. Key electrical characteristics include a collector-base voltage (V_CBO) of 50 V and a collector-emitter voltage (V_CEO) of 40 V at 25°C. The device supports a continuous collector current (I_C) of 0.1 A and features a high DC current gain (h_FE) ranging from 100 to 300 under specified test conditions. It operates with a maximum junction temperature of 150°C and power dissipation typically rated at 0.3 W or 0.5 W depending on thermal constraints.
Feature Summary
- High DC current gain suitable for low-noise amplification applications
- Surface-mount SOT-23 packaging for automated assembly efficiency
- NPN silicon epitaxial planar construction for reliable switching performance
Applications
- General-purpose amplifier circuits
- Switching applications in consumer electronics
- Driver stages for relay or LED control
Procurement Notes
Verify the manufacturer marking and date code against official Fairchild Semiconductor documentation to ensure authenticity. Confirm that the SOT-23 package variant matches the specific mechanical dimensions required for your PCB layout. Check for RoHS compliance status if environmental regulations apply to your manufacturing process.
Selection Notes
Select this component when a small-form-factor NPN transistor with moderate voltage ratings and high current gain is required. Ensure the thermal management design accommodates the power dissipation limits in the SOT-23 package. Compare h_FE ranges against circuit requirements to guarantee sufficient drive capability for the intended load.
Part Context
The SS9018 series represents a family of general-purpose NPN transistors widely used in analog and digital switching circuits. The GB suffix typically denotes specific binning or packaging variations within the Fairchild product line. This component serves as a standard replacement for legacy through-hole equivalents in modern compact electronic designs.
Replacement Considerations
Equivalent parts include BC847B and 2N3904 (with package adaptation). Verify pinout compatibility between SOT-23 variants before substitution. Ensure voltage and current ratings meet or exceed original design specifications.
