Featured: PINECIL Smart Mini Soldering Iron at Amazon.
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Not every soldering job happens at a full-size station. Repairs on an installed radio, work in a cramped cabinet, or a quick fix away from the main bench all go easier with a small iron that still controls its temperature properly. The PINECIL is a compact, computer-controlled soldering iron from PINE64 that runs from USB-C or a DC barrel jack.
What the Pinecil is
PINE64 describes the Pinecil as a portable soldering iron with computer controlled temperature, sleep modes and motion detection. The current version, V2, is listed with power ports rated 12V-24V, 88 Watts: USB type C with PD 12V-20V 3A and QC 3.0 12V-20V 3A, or a DC5525 barrel jack at 12V-24V, minimum 3amps. It is small and light, listed at 28g with the tip installed, and ships with a short ST-B2 tip.
Getting good heat from it
The Pinecil's performance depends heavily on what powers it. PINE64 notes that a 12V USB-C charger will not perform as well or heat as fast as a USB-C PD65W/20V/3amp charger. In practice that means:
- Use a capable USB-C PD supply rather than whatever phone charger is nearby.
- Use only one power port at a time, USB-C or the barrel jack, never both.
- Use the correct barrel plug. PINE64 warns that using an incorrect barrel jack, such as a DC5521, will break the connector.
- Avoid magnetic USB-C cables, which PINE64 says are not recommended and not USB compliant.
Where it fits in amplifier work
A small iron like this suits board-level work: replacing resistors and capacitors in a bias network, reworking a relay driver, or soldering small leads in tight spaces. Temperature control helps protect pads and nearby components, and the light weight makes precise work less tiring.
Large thermal loads are a different story. Heavy RF connectors, wide copper ground areas and big heatsink tabs pull heat away quickly, and any small iron can struggle to bring them up to soldering temperature. For that kind of joint, a higher-powered station with a larger tip is the better tool. Many builders keep both: a compact iron for fine work and a heavier station for connectors and chassis grounds.
Good habits with any iron
Keep the tip clean and tinned, use enough heat to make the solder flow and wet both surfaces, and do not linger on heat-sensitive parts. Let joints cool without moving them, then inspect them. A shiny, smoothly flowed joint is what you are after.
A portable iron also needs a safe place to rest. Use a proper stand rather than laying it on the bench, and let the tip cool before packing it away. Small irons are easy to knock over, and a hot tip on a cable jacket or a plastic case does damage fast.
And the usual reminder: external linear amplifiers are not legal for use on CB radio. Good soldering tools serve any legal build, repair or amateur station project.
Where to get it
Check current price and availability: PINECIL Smart Mini Soldering Iron at Amazon.
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