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
The FNIRSI HS-02A rates 3.5 among smart irons soldering stations; the Hakko FX-971 rates 3.2 among soldering stations ones. The FNIRSI HS-02A costs $242.98 less ($86.99 vs $329.97).
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.
Hakko FX-971
A 100 W cartridge station for busy repair and production benches that want Hakko support and software control. Hobby users get most of the benefit for less elsewhere.
Amazon $329.97$329.97
Scores side by side
These two sit in different type classes (smart irons and soldering stations), 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 | FNIRSI HS-02A | Hakko FX-971 |
|---|---|---|
| Overall rating | 3.5/5 | 3.2/5 |
| Value 25% | 76 $0.87 per watt ($86.99, 100 W) | 18 $3.30 per watt ($329.97, 100 W) |
| Power 25% | 57 100 W iron | 57 100 W iron |
| Top temperature 10% | 50 up to 450 °C | 50 up to 450 °C |
| Stability 10% | 50 stability not published (neutral score used) | 60 ±3 °C at idle |
| Features 20% | 70 cartridge tips, auto sleep or standby, preset temperatures, calibration | 85 cartridge tips, auto sleep or standby, preset temperatures, settings lock, calibration |
| Warranty 10% | 0 warranty not published, scored as none | 25 1-year warranty |
Specifications
| FNIRSI HS-02A | Hakko FX-971 | |
|---|---|---|
| Soldering iron | ||
| Iron power | 100 W | 100 W |
| Station power | - | 100 W |
| Temperature range | 100-450 °C (212-842 °F) | 50-450 °C (122-842 °F) |
| Idle stability | - | ±3 °C |
| Heat-up time (not scored) | 3 s | - |
| Tip system | FNIRSI HS-02 cartridge | Hakko T39 cartridge |
| Tips included | Yes | No |
| Features | ||
| Display | OLED | LCD |
| Ports | - | 1 |
| Auto sleep or standby | Yes | Yes |
| Preset temperatures | 3 | 5 |
| Calibration | Yes | Yes |
| Settings lock | - | Yes |
| Build | ||
| Weight | - | 2.6 lb |
| Warranty | - | 1 year |