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2SC3356 R25 SOT-23 NPN RF Transistor 7GHz fT High-Frequency Amplifier (10-Pack)

$4.24 USD

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2SC3356 R25 SOT-23 NPN RF Transistor - 7GHz fT, UHF/VHF Amplifier (10-Pack)

The 2SC3356 (marking: R25) is a high-frequency NPN silicon RF transistor from ROHM in a SOT-23 surface-mount package. With a transition frequency of 7GHz and a noise figure of just 2dB at 1GHz, it is the standard transistor for UHF/VHF low-noise amplifiers (LNA), satellite receiver front-ends, and high-frequency oscillator circuits.

Key Specifications

Parameter	Value
Part Number	2SC3356 (R25)
Package	SOT-23 (SMD)
Type	NPN Silicon RF Transistor
VCEO	20V
IC (Collector Current)	100mA
PC (Power Dissipation)	200mW @ 25C
fT (Transition Frequency)	7GHz typical
hFE (DC Current Gain)	40-120 @ IC=10mA
Noise Figure (NF)	2dB @ 1GHz, VCE=3V, IC=5mA
Operating Temperature	-55C to +125C
Quantity	10 pieces

Why Choose 2SC3356?

7GHz Transition Frequency - Provides useful gain well into the UHF band (300MHz-3GHz)
2dB Noise Figure @ 1GHz - Low-noise performance for LNA and satellite receiver front-ends
SOT-23 Package - Compact SMD footprint for RF PCB designs with short trace lengths
20V VCEO - Adequate headroom for typical RF amplifier bias voltages
Industry Standard - Widely used in consumer electronics RF circuits

Typical Applications

UHF/VHF low-noise amplifier (LNA) for TV tuners and SDR dongles
Satellite receiver (LNB) front-end amplifier
FM/AM radio RF amplifier stage
High-frequency oscillator (Colpitts, Hartley) up to 1GHz
Wideband RF buffer amplifier

FAQ

Q: What does the R25 marking mean? R25 is the SOT-23 package marking for 2SC3356 (ROHM designation). Full part number: 2SC3356-R25.

Q: Can 2SC3356 amplify 2.4GHz WiFi signals? With fT=7GHz it has gain at 2.4GHz but performance degrades above 1GHz. For 2.4GHz LNA, use dedicated MMIC amplifiers (SPF5189Z, BGA2803).