{"product_id":"2sc3356-r25-sot23-npn-rf-transistor-7ghz-10pack","title":"2SC3356 R25 SOT-23 NPN RF Transistor 20V 100mA 7GHz fT (10-Pack)","description":"\u003ch2\u003e2SC3356 R25 SOT-23 NPN RF Transistor — 7GHz fT, UHF\/VHF Amplifier (10-Pack)\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003e2SC3356\u003c\/strong\u003e (marking: R25) is a high-frequency NPN silicon RF transistor from ROHM in a \u003cstrong\u003eSOT-23\u003c\/strong\u003e surface-mount package. With a transition frequency of \u003cstrong\u003e7GHz\u003c\/strong\u003e and a noise figure of just \u003cstrong\u003e2dB at 1GHz\u003c\/strong\u003e, it is the standard transistor for \u003cstrong\u003eUHF\/VHF low-noise amplifiers (LNA)\u003c\/strong\u003e, satellite receiver front-ends, and high-frequency oscillator circuits.\u003c\/p\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e2SC3356 (R25)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eSOT-23 (SMD)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eNPN Silicon RF Transistor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVCEO (Collector-Emitter Voltage)\u003c\/td\u003e\n\u003ctd\u003e20V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIC (Collector Current)\u003c\/td\u003e\n\u003ctd\u003e100mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePC (Power Dissipation)\u003c\/td\u003e\n\u003ctd\u003e200mW @ 25°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003efT (Transition Frequency)\u003c\/td\u003e\n\u003ctd\u003e7GHz typical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ehFE (DC Current Gain)\u003c\/td\u003e\n\u003ctd\u003e40–120 @ IC=10mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNoise Figure (NF)\u003c\/td\u003e\n\u003ctd\u003e2dB @ 1GHz, VCE=3V, IC=5mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e−55°C to +125°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e10 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eWhy Choose 2SC3356?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e7GHz Transition Frequency\u003c\/strong\u003e — Provides useful gain well into the UHF band (300MHz–3GHz)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2dB Noise Figure @ 1GHz\u003c\/strong\u003e — Low-noise performance for LNA and satellite receiver front-ends\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSOT-23 Package\u003c\/strong\u003e — Compact SMD footprint for RF PCB designs with short trace lengths\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20V VCEO\u003c\/strong\u003e — Adequate headroom for typical RF amplifier bias voltages\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustry Standard\u003c\/strong\u003e — Widely used in consumer electronics RF circuits; extensive reference designs available\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eUHF\/VHF low-noise amplifier (LNA) for TV tuners and SDR dongles\u003c\/li\u003e\n\u003cli\u003eSatellite receiver (LNB) front-end amplifier\u003c\/li\u003e\n\u003cli\u003eFM\/AM radio RF amplifier stage\u003c\/li\u003e\n\u003cli\u003eHigh-frequency oscillator (Colpitts, Hartley) up to 1GHz\u003c\/li\u003e\n\u003cli\u003eWideband RF buffer amplifier\u003c\/li\u003e\n\u003cli\u003eCellular and WiFi band pre-amplifier\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTypical Bias Point (LNA)\u003c\/h3\u003e\u003cp\u003eVCE = 3V, IC = 5mA for minimum noise figure. Use common-emitter topology with 50Ω input\/output matching network. Add bypass capacitors (100pF + 10nF) on VCC supply line to prevent RF feedback.\u003c\/p\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: What does the “R25” marking mean on 2SC3356?\u003c\/strong\u003e\u003cbr\u003eA: “R25” is the SOT-23 date\/lot code marking for 2SC3356. The full part number is 2SC3356-R25 (ROHM designation).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Can 2SC3356 amplify 2.4GHz WiFi signals?\u003c\/strong\u003e\u003cbr\u003eA: With fT=7GHz, it has gain at 2.4GHz but performance degrades above 1GHz. For 2.4GHz LNA, use dedicated MMIC amplifiers (e.g., SPF5189Z, BGA2803).\u003c\/p\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e10× 2SC3356 R25 SOT-23 NPN RF Transistor\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":46991498215659,"sku":"\u003cnone\u003e","price":3.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/2sc3356-r25-sot23-transistor.webp?v=1761534805","url":"https:\/\/keszoox.com\/products\/2sc3356-r25-sot23-npn-rf-transistor-7ghz-10pack","provider":"Keszoox","version":"1.0","type":"link"}