{"product_id":"utp3313tfl-ii","title":"UTP3313TFL-II 1Ch 90W 30V\/3A Linear DC Power Supply","description":"\u003ch1\u003eUNI-T UTP3313TFL-II 1Ch Linear DC Power Supply\u003c\/h1\u003e\n\n\u003cdiv class=\"product-container\"\u003e\n\u003cdiv class=\"product-row\"\u003e\n\u003cdiv class=\"product-box product-left\"\u003e\n\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe UTP3313TFL-II is a single-channel linear bench supply at the size, weight, and price point that makes sense for the bench it's actually going to live on. UNI-T calls it \"an economical benchtop tool for DIY electronics hobbyists, electronics manufacturing and testing\" — which is the most accurate one-line description we can offer. 90W of linear DC at 0–30V \/ 0–3A, in a footprint of 105 × 165 × 249 mm and a 3 kg net weight.\u003c\/p\u003e\n\u003cp\u003eA four-digit LED display reads voltage and current at 10 mV \/ 1 mA resolution per channel. Auto CV\/CC crossover with current limit protection handles unknown loads safely. No firmware, no network port, no PC software stack. Plug in, set the rail, run the bench.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\n\u003cdiv class=\"product-container\"\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cdiv class=\"product-key-features\"\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle-Channel, 90W Linear Output\u003c\/strong\u003e — 0–30V \/ 0–3A from a linear regulator. Clean, low-ripple output (≤1 mVrms) suitable for analog work, sensor circuits, and any prototyping where switching noise is unwelcome.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFour-Digit LED Display, 10 mV \/ 1 mA\u003c\/strong\u003e — High-resolution voltage and current readouts. Set the rail accurately; see what the load is actually drawing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuto CV\/CC Crossover with Current Limit Protection\u003c\/strong\u003e — The supply transitions automatically between constant-voltage and constant-current operation when the load steps. Protects the DUT during fault conditions and the supply during overload.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact Footprint, Light Weight\u003c\/strong\u003e — 105 × 165 × 249 mm, 3 kg. Fits next to a scope on a crowded bench, lifts with one hand, packs into a service van without rearranging the back.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSet-Point Programming Accuracy\u003c\/strong\u003e — \u0026lt;0.5% + 20 mV on voltage, \u0026lt;0.5% + 5 mA on current — published set-point accuracy that lets you trust the dial reading for precision work.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKnob-and-Button Operation\u003c\/strong\u003e — No firmware to update, no PC software to install, no LAN port to configure. Front-panel only.\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\n\n\u003cdiv class=\"product-container\"\u003e\n\u003ch2\u003eThe Bench Supply Sized for the Bench It's Actually On\u003c\/h2\u003e\n\u003cdiv class=\"product-row\"\u003e\n\u003cdiv class=\"product-box product-left\"\u003e\n\u003cp\u003eMost three-channel bench supplies are 8–10 kg in a 260+ mm-wide chassis — perfectly reasonable on a permanent lab bench, considerably less reasonable on a hobbyist workbench, a maker space's shared station, or a service tech's mobile cart. The UTP3313TFL-II is what UNI-T's product line offers when one channel is enough and shelf space isn't free.\u003c\/p\u003e\n\u003cp\u003eFor DIY electronics, kit assembly, board-level repair work, basic instructional setups, and second-supply duty next to a multi-channel main supply, the value math here is clean. 90W of linear DC at 10 mV \/ 1 mA resolution, at a price the bench-supply line's three-channel models can't approach. When you only need one rail, you only pay for one rail.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\n\u003cdiv class=\"product-container\"\u003e\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cdiv class=\"product-app-grid\"\u003e\n\u003cdiv class=\"product-app-card\"\u003e\n\u003ch3\u003eDIY Electronics \u0026amp; Hobbyist Workshops\u003c\/h3\u003e\n\u003cp\u003eUNI-T's own datasheet positions this supply for \"DIY electronics hobbyists, electronics manufacturing and testing.\" Single-channel linear DC, 10 mV \/ 1 mA precision, and a footprint that doesn't dominate the bench.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-app-card\"\u003e\n\u003ch3\u003eTeaching Labs \u0026amp; Trade Schools\u003c\/h3\u003e\n\u003cp\u003eOne supply per station at a per-station cost that lets a 30-bench classroom stay in budget. Knob-and-button operation matches the curriculum-relevant skill: students learn measurement, not menu navigation. Compact footprint leaves bench space for the scope and the DMM.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-app-card\"\u003e\n\u003ch3\u003eService \u0026amp; Repair\u003c\/h3\u003e\n\u003cp\u003eReliable single-rail bench supply for board-level service, kit testing, and small-circuit work. CV\/CC auto crossover handles unknown loads safely. Small enough to live on a service cart.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-app-card\"\u003e\n\u003ch3\u003eSecond-Rail Bench Companion\u003c\/h3\u003e\n\u003cp\u003eWhen your main bench supply is occupied with the primary DUT, the UTP3313TFL-II handles auxiliary rails — bias supplies for active probes, separate logic rails for adapter boards, or quick test setups that don't justify reconfiguring the main supply.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\n\u003cdiv class=\"product-container\"\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"product-faq-item\"\u003e\n\u003cp class=\"product-faq-question\"\u003eDoes the UTP3313TFL-II have USB or SCPI?\u003c\/p\u003e\n\u003cp\u003eNo. The UTP3313TFL-II is a fully analog, knob-and-button bench supply — no USB data interface, no LAN, no SCPI command set, no PC software. The \"Programming accuracy\" specification on the datasheet refers to set-point accuracy (how close the actual output is to the dial reading), not remote programmability. If your workflow needs SCPI control, the programmable counterparts in the UNI-T linear PSU family are the UDP3303C and UDP3305C (USB + RS-232) and the UDP3000S series (USB + LAN + LXI).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-faq-item\"\u003e\n\u003cp class=\"product-faq-question\"\u003eWhat's the difference between the UTP3313TFL-II and the UTP3315TFL-II?\u003c\/p\u003e\n\u003cp\u003eOutput current. UTP3313TFL-II delivers 0–3A (90W total). UTP3315TFL-II delivers 0–5A (150W total). Voltage range, display, regulation specs, and physical dimensions are otherwise identical between the two. The 5A model has a slightly relaxed ripple spec (≤2 mVrms vs ≤1 mVrms) reflecting the higher-current rectifier stage.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-faq-item\"\u003e\n\u003cp class=\"product-faq-question\"\u003eWhy a linear supply instead of switching?\u003c\/p\u003e\n\u003cp\u003eLinear topology produces fundamentally cleaner output — no switching frequency, no harmonic spurs, ripple under 1 mVrms. For analog bench work, audio circuits, low-noise sensor development, and any precision measurement where supply noise shows up in the result, the difference is measurable. The trade-off is lower efficiency and more heat, which at 90W in a 3 kg chassis is not a meaningful constraint.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-faq-item\"\u003e\n\u003cp class=\"product-faq-question\"\u003eWhat's included with the UTP3313TFL-II?\u003c\/p\u003e\n\u003cp\u003eThe UTP3313TFL-II ships with the instrument, an international standard power cord, test output line Ships from authorized US dealer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"UNI-T","offers":[{"title":"Default Title","offer_id":53288625439004,"sku":"181730080284X","price":79.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/9208\/0924\/files\/UTP3315TFL-II_1.png?v=1740767527","url":"https:\/\/uni-trendus.com\/products\/utp3313tfl-ii","provider":"Uni-Trend US","version":"1.0","type":"link"}