The UTP3315TFL-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. 150W of linear DC at 0–30V / 0–5A, in a footprint of 105 × 165 × 249 mm and a 4 kg net weight.
A 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. The 5A current rating handles small motors, transmitter front-ends, higher-current LED arrays, and the kind of higher-power prototyping that the 3A UTP3313TFL-II runs short on. No firmware, no network port, no PC software stack.
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Single-Channel, 150W Linear Output — 0–30V / 0–5A from a linear regulator. Clean, low-ripple output (≤2 mVrms) suitable for analog work, transmitter projects, motor-drive prototyping, and higher-current bench tasks where switching noise is unwelcome.
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Four-Digit LED Display, 10 mV / 1 mA — High-resolution voltage and current readouts. Set the rail accurately; see what the load is actually drawing.
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Auto CV/CC Crossover with Current Limit Protection — 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.
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Compact Footprint, Light Weight — 105 × 165 × 249 mm, 4 kg. Fits next to a scope on a crowded bench, lifts with one hand, packs into a service van without rearranging the back.
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Set-Point Programming Accuracy — <0.5% + 20 mV on voltage, <0.5% + 10 mA on current — published set-point accuracy that lets you trust the dial reading for precision work.
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Knob-and-Button Operation — No firmware to update, no PC software to install, no LAN port to configure. Front-panel only.
The Bench Supply Sized for the Bench It's Actually On
Most 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 UTP3315TFL-II is what UNI-T's product line offers when one channel is enough but the current rating needs headroom.
For DIY electronics with motor or RF loads, kit assembly, board-level repair work on power-stage circuits, and second-supply duty next to a multi-channel main supply, the value math here is clean. 150W 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 at higher current, you only pay for one rail.
Applications
DIY Electronics & Hobbyist Workshops
UNI-T's own datasheet positions this supply for "DIY electronics hobbyists, electronics manufacturing and testing." The 5A capability handles amateur radio rigs, EV-conversion bench testing, motor-driven robotics prototyping, and the higher-power projects that the 3A model runs short on.
Teaching Labs & Trade Schools
One supply per station at a per-station cost that lets a 30-bench classroom stay in budget — with the current capability for higher-power lab exercises (motor drive, power amplifiers, LED arrays). Compact footprint leaves bench space for the scope and the DMM.
Service & Repair
Reliable single-rail bench supply for board-level service work where the device under test is a higher-current load — small motor drives, switch-mode supplies under test, automotive electronics, audio amplifier service. CV/CC auto crossover handles unknown loads safely.
Second-Rail Bench Companion
When your main bench supply is occupied with the primary DUT, the UTP3315TFL-II handles auxiliary rails at higher current — supplying motor drivers under separate test, larger-load adapter boards, or quick test setups that don't justify reconfiguring the main supply.
