YIHUA 939D+ III EVO
A well-equipped budget station for hobbyists who want presets, sleep and more power than entry stations.
Amazon $79.99$79.99
The YIHUA 939D+ III EVO rates 3.6 among soldering stations soldering stations; the FNIRSI HS-02A rates 3.5 among smart irons ones. The YIHUA 939D+ III EVO costs $7 less ($79.99 vs $86.99).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
FNIRSI HS-02A
#1 in Smart ironsFull review
A powerful USB-C iron for hobbyists who want station-like power in a pen, adapter included.
Amazon $86.99$86.99
Scores side by side
These two sit in different type classes (soldering stations and smart irons), and each is scored against the reference points for its own class, so a rating says how well each does among its own type peers. How we rank explains each factor.
| Factor weight | YIHUA 939D+ III EVO | FNIRSI HS-02A |
|---|---|---|
| Overall rating | 3.6/5 | 3.5/5 |
| Value 25% | 84 $0.73 per watt ($79.99, 110 W) | 76 $0.87 per watt ($86.99, 100 W) |
| Power 25% | 63 110 W iron | 57 100 W iron |
| Top temperature 10% | 80 up to 480 °C | 50 up to 450 °C |
| Stability 10% | 50 stability not published (neutral score used) | 50 stability not published (neutral score used) |
| Features 20% | 45 auto sleep or standby, preset temperatures, calibration | 70 cartridge tips, auto sleep or standby, preset temperatures, calibration |
| Warranty 10% | 25 1-year warranty | 0 warranty not published, scored as none |
Specifications
| YIHUA 939D+ III EVO | FNIRSI HS-02A | |
|---|---|---|
| Soldering iron | ||
| Iron power | 110 W | 100 W |
| Temperature range | 200-480 °C (392-896 °F) | 100-450 °C (212-842 °F) |
| Heat-up time (not scored) | - | 3 s |
| Tip system | - | FNIRSI HS-02 cartridge |
| Tips included | Yes | Yes |
| Features | ||
| Display | LCD | OLED |
| Ports | 1 | - |
| Auto sleep or standby | Yes | Yes |
| Preset temperatures | 4 | 3 |
| Calibration | Yes | Yes |
| Build | ||
| Warranty | 1 year | - |