Description
Product Overview
The FNIRSI HS02A 100W Portable Soldering Pencil is engineered for precision and durability. Housed in a robust aluminum‑alloy body, the tool balances weight at just 14.4 oz, providing comfortable, fatigue‑free handling during extended sessions. Its ceramic heating element reaches a maximum of 842 °F (450 °C) within seconds, while a digital controller offers three preset temperature groups and a continuous range from 212 °F to 842 °F. The included HS02A pen, F245‑B tip, and a full set of M2‑M8 heat‑set insert nuts enable seamless transitions between soldering, jewelry welding, and 3D‑printing insert installation. Powered by a corded 100W supply (9–20 V), the unit delivers stable output without the need for batteries, and the supplied adapter cable ensures a secure connection.
Usage
Designed for residential and light‑industrial environments, the HS02A excels in repairing circuit boards, assembling prototype electronics, and installing threaded inserts in 3D‑printed parts. Its portable form factor and included storage case make it easy to transport to workshops, maker spaces, or on‑site service calls. Whether you are a hobbyist crafting custom jewelry, a technician fixing a motherboard, or a maker adding metal inserts to printed models, the HS02A provides the temperature accuracy and tip versatility required for clean, reliable joints. 
Why Choose Us
FNIRSI is a recognized brand in precision tools, and the HS02A reflects that reputation through rigorous quality control and component selection. The ceramic heating element offers a longer lifespan than traditional nichrome coils, reducing downtime and replacement costs. Smart safety functions—including automatic sleep mode, power‑off timer, and child‑lock—protect users and equipment. All accessories are packaged in a durable, reusable case, ensuring organization and protection during travel. With a 4.2‑star rating from 21 verified customers, the HS02A consistently delivers performance that meets professional standards at a competitive price point.
Key Features
- High‑performance 100W ceramic heating element reaching up to 842 °F for fast soldering.
- Three preset temperature groups plus continuous adjustment from 212 °F to 842 °F.
- Comprehensive accessory kit: soldering pen, F245‑B tip, M2‑M8 heat‑set insert nuts, stand, and storage case.
- Smart safety: auto‑sleep, automatic power‑off, and child‑lock modes.
- Lightweight pencil design (14.4 oz) for ergonomic handling and portable use.
FAQ
Can the HS02A be used cordless?
No. The HS02A requires the supplied charging cable and operates only as a corded device. This ensures stable power delivery for high‑temperature tasks.
What temperature range does the tool support?
The soldering iron offers a selectable range from 212 °F (100 °C) up to 842 °F (450 °C), with three preset groups for quick changes and fine‑tune adjustment within that span.
Are additional tips compatible?
Yes. The pen uses a standard 0.8 mm shank, allowing you to attach a wide variety of FNIRSI and third‑party tips for specialized applications.
How does the auto‑sleep feature work?
If the iron remains idle for a configurable period, it automatically reduces power to a safe standby level, extending tip life and conserving energy.
Is the tool suitable for professional electronics repair?
Absolutely. Its precise temperature control, stable 100W output, and included heat‑set insert set make it ideal for both hobbyist projects and professional service environments.




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