FNIRSI HS-02 Review: The 100 W Smart Soldering Iron That Travels

July 16, 2026 Tech2Have Team 3 min read
FNIRSI Soldering Tools Review
FNIRSI HS-02 Review: The 100 W Smart Soldering Iron That Travels

FNIRSI's global best-selling HS-02 smart soldering iron reviewed: 100 W USB-C power, seconds to temperature, a colour display and a full toolbox kit.

Portable USB-C soldering irons used to mean compromise — low power, slow recovery, fiddly menus. The FNIRSI HS-02 is the product that ended that: a 100 W iron the size of a chunky pen that reaches soldering temperature in seconds, and one of FNIRSI's two best-selling products worldwide. Tom's Hardware summed up its review simply: "keep soldering on."

Design: all-metal, big screen, short tip

The HS-02 is the refined second generation of FNIRSI's smart iron. Compared with the HS-01 it gets an improved grip, a shorter tip-to-fingers distance for precision work, a larger 0.96-inch IPS colour display and faster heating. The body is all-metal, and the interface is two buttons plus the screen — temperature changes take a press-and-hold, not a menu dive.

Performance: 100 W over USB-C

Fed from a PD/QC USB-C supply the HS-02 delivers up to 100 W — enough to tin the tip in around 2–3 seconds and, more importantly, to hold temperature through big ground pours and connector lugs that stall weaker portable irons. Temperature is adjustable from 100–450 °C (212–842 °F) with three preset temperature groups for one-tap switching between, say, leaded touch-up, lead-free production and heat-shrink duty. It uses the readily available F245-style internal-heater tips.

The smart part

Motion-sensing sleep drops the tip temperature when you set the iron down and wakes it the moment you pick it up; automatic power-off covers the forgotten-iron scenario; and a child-lock stops accidental temperature changes in a shared workspace. Adaptive power management matches output to whatever USB-C or DC supply you plug in.

How it compares

Against the popular Pinecil V2, the HS-02 is the heavier tool (about 50 g vs 30 g) and its silicone grip warms during marathon sessions — but it wins on raw power ceiling (100 W vs 88 W peak), heat-up speed and packaging: the HS-02 Toolbox kit ships iron, tips, stand and accessories in one carry case. As an all-in-one travel and bench kit, it's the stronger buy; firmware tinkerers may still prefer the open-source Pinecil.
Power Up to 100 W via USB-C PD/QC or DC input, adaptive power
Heat-up Tip tinned in ~2–3 s at full power
Temperature 100–450 °C (212–842 °F), 3 preset groups
Display 0.96" IPS colour screen
Tips F245-style internal-heater cartridges
Smart features Motion sleep, auto power-off, child lock
Body All-metal construction, ~50 g

Who should buy it

Field technicians who solder away from a bench, makers who want one iron for home and travel, and anyone stepping up from a barrel-style mains iron will feel the difference immediately. Pair it with the HT-P1 hot plate and SAG-55 hot-air gun from the same range and you have a complete SMD rework station that packs into a lunchbox.

Any USB-C PD or QC charger works — a 65 W+ laptop-class charger gets near-full performance; at 100 W input it delivers its fastest heat-up and best thermal recovery. It also accepts DC input for battery/field use.

The Toolbox kit adds a carry case, extra tips and accessories — worth it if this will be your primary iron or you work on the road. The bare iron suits those who already own tips and a stand.

Yes — FNIRSI sells a dedicated insert-nut tip kit (HS-02-3D, in the carousel below) that turns the HS-02 into a heat-set insert tool for 3D-printed parts.

HS-02 and soldering companions

FNIRSI HS-02 Intelligent Soldering Iron
FNIRSI
FNIRSI HS-02 Intelligent Soldering Iron
HS-02
Buy from Amazon
FNIRSI HS-02 Intelligent Soldering Iron with Portable Soldering Toolbox
FNIRSI
FNIRSI HS-02 Intelligent Soldering Iron with Portable Soldering Toolbox
HS-02-TOOLBOX
Buy from Amazon
FNIRSI HS-02A Soldering Iron Internal Heat Nut Kit for 3D Printer
FNIRSI
FNIRSI HS-02A Soldering Iron Internal Heat Nut Kit for 3D Printer
HS-02-3D
Buy from Amazon
FNIRSI HS-03 Cordless Soldering Iron, 18650 Removable Battery, USB-C, 212–842℉
FNIRSI
FNIRSI HS-03 Cordless Soldering Iron, 18650 Removable Battery, USB-C, 212–842℉
HS-03
Buy from Amazon
FNIRSI DWS-P2 100W Portable Soldering Station, 18650 Battery, 212℉~842℉
FNIRSI
FNIRSI DWS-P2 100W Portable Soldering Station, 18650 Battery, 212℉~842℉
DWS-P2
Buy from Amazon
FNIRSI HT-P1 Mini Hot Plate Dual Mode Reflow & Heating Station, 150W 100–350°C, DC/USB-C PD
FNIRSI
FNIRSI HT-P1 Mini Hot Plate Dual Mode Reflow & Heating Station, 150W 100–350°C, DC/USB-C PD
HT-P1
Buy from Amazon

Browse every FNIRSI soldering and rework tool we list.

Browse the FNIRSI range

Some links in our articles may be affiliate links — if you buy through them we may earn a small commission at no extra cost to you. See our Affiliate Disclosure.

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