{"product_id":"156137","title":"VCR2N","description":"\u003cp\u003eN-channel Junction Field-Effect Transistor (JFET) specifically designed to act as a continuous, highly linear voltage-controlled resistor (VCR). Unlike standard switching or amplifying JFETs, the VCR2N is optimized for predictable resistance changes across its drain-source channel (\\(r_{DS}\\)) in response to a DC bias voltage (\\(V_{GS}\\)) applied to its gate - Key Technical SpecificationsThe electrical characteristics are highly distinct to ensure smooth control over low-level AC signals:Drain-Source Resistance Range (\\(r_{DS}\\)): Typically scales from 20 Ω to 60 Ω when fully turned on (\\(V_{GS} = 0\\,\\text{V}\\)). Its maximum off-isolation resistance can soar well over 100 kΩ.Gate-Source Cutoff Voltage (\\(V_{GS(off)}\\)): Varies between -3.5 V and -7.0 V.Gate-Source Breakdown Voltage (\\(V_{(BR)GSS}\\)): -25 V maximum.Power Dissipation: Rated up to 300 mW.Package Style: Encapsulated in a hermetically sealed, 3-pin metal can package (TO-206AA \/ TO-18).Applications and Operating PrincipleThe device is intended for small-signal operations where the alternating current (AC) signal lacks a DC component. When operated near the origin of its output characteristic curve (the triode region), the VCR2N exhibits almost pure ohmic resistance. Common use cases include:Variable Gain Amplifiers (VGAs)Automatic Gain Control (AGC) circuitsVoltage-Controlled Oscillators (VCOs)Small-signal attenuators and dynamic filtersTo counteract nonlinearities and minimize harmonic signal distortion, designers frequently implement a simple feedback circuit. This setup couples a fraction of the drain signal back to the gate terminal via a basic resistor divider.\u003c\/p\u003e","brand":"SILICONIX","offers":[{"title":"Default Title","offer_id":45789298819125,"sku":null,"price":7.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0219\/7936\/5440\/files\/AP1GczOGy04Se4pt9nMdiiH-_3kPZuec_vH7HRTk8jEmnzQF43btFsCkATAivqkoOeBAIQrsPT5CdANT2B4Y5ABkWc8TUl9HZProfCalD5uEZucbeQRNcA2pAOUBjZHJixw7zgWJP52U3HriGbEg-SqLfzLBwg_w1776-h1776-s-no-gm.jpg?v=1784676650","url":"https:\/\/greenbrookonline.com\/products\/156137","provider":"Green Brook Online","version":"1.0","type":"link"}