1Pcs DC 12V Push Pull Type Frame Electromagnet JF-0530B keepping Force 5N Travel 10mm Linear Solenoid

This solenoid is rated at 12V 300 mA - heck, it even has a label to that effect tuck on the side. Actually, though, it draws almost exactly 1 amp, which is 12 watts - at that power level it heats up very quickly. To be fair, the seller does state that it should only be energized for two seconds at a time, which is actually quite conservative even at this much higher power draw, but it would have been nice to know the actual specifications when purchased.Besides that issue, this solenoid is OK-ish, hence the three stars. It provides a reasonable amount of force for its size (not surprising, considering the current draw), and having the armature retained so that it can't fall out is a handy feature. Mounting is a bit of a hassle, since there are just two M3 holes on one side of the housing; to mount it, you must drill two accurately-spaced holes through whatever it's being mounted on, then hunt down a couple of M3 screws of exactly the right length (very little tolerance - within 1/8").The armature moves smoothly, but even a little side load will cause it to jam. Despite the good price and conveniently small size, I'll probably try another unit next time I need one.

Current flow says 0.300ma but it's definitely not. At 12ohms resistance and 12volt supply this will draw a full 1Amp. Therefore if running this at a pulse width modulation, you'll need to use a MOSFET and not a basic transistor. I was hoping it actually was going to be lower amperage and draw. Going to try using a current limiting resistor but I'm not sure it will work. Just FYI

Ordered 2 identical 12v solenoids. Received ones 12v and one 24v. Filed for a replacement, received a 24v replacement. One of 3 solenoids was the correct voltage. UPDATE: Now one of four of these was the correct voltage. DO NOT BUY FROM THIS SELLER!

Very weak

At 12V it consumes 900mA and does get very hot after a few seconds of operation.It can hold close to 400gr when fully retracted. For the first 8mm of travel, holding force is ~50 gr. Measured lifting a weight on a scale.300mA (as per the label) require 4V. With that voltage, it does not have enough force to compress the internal spring. But it will stay retracted if you push it.Summary: if you need low duty cycle operation and light force, this works. If you need something close to the advertised specs, look for alternatives.