It cycles on/off once a day and stays on for about 10 hours. Basically, there are 2 legs of 120V offset by 180°. Hi there! verified purchaser. verified purchaser. Do I need transistor? I'll own that in this case- but I've bigger fish to fry and have limited resources (time being one of them...) on a project of moderate import to a lot more than just myself. And it works! This relay is a huge upgrade over the mechanical relays you might be used to (no clicking, much more reliable). ", So these are not good for 240 Volts like we have in Australia as the peak to peak voltage can be 650 Volts. Will this damage the relay or is there any chances for other damages ? You may need to provide your own basic tools like a screwdriver, hammer or scissors. The caveat to that, though, is if/when they fail due to overheating (see dnear1's post) is that you can't tell what's going to be connected to what after meltdown (literally for me, in one case several years ago). Couldn’t ask for better. These particular solid state relays can switch 400VAC and 8A. Each relay is rated to 40A @ 28-380 VAC so with all four on board you can control some serious power all from the easy-to-use Qwiic Connect System. This way my subwoofer would turn on and off with the receiver using a Crown Power Base 2 amplifier. verified purchaser. Quote. by Member #811852 Work great. Single T The screw terminals work nicely with either bare wire or spade connecters. Like all SSR's don't run them at the rated current, they will get hot and sometimes not shut off. Sorry, could not get the formatting to work and gave up. The application is a cheap PID temperature controller maintaining a water tank temperature as part of a hydronic heating system. : 1. Sparkfun Solid State Relay Board; The schematic is shown below for the Sparkfun Solid State Relay board seen above. Mon-Fri, 9am to 12pm and Be mindful in your design process and this is a great buy, just don't expect mechanical relay power performance without some serious effort on your part. The SparkFun Qwiic Dual Solid State Relay is a power delivery board that allows users to switch two AC loads from a low power microcontroller using the SparkFun Qwiic connect system. Pros/Cons over the PowerSwitch Tail kit? (I'm glad I bought two, because I fried my first one.. I will be using these for all my AC voltage projects. 2. Same specs otherwise. If the load doesn't use the neutral, you could get away with one, but that would be against NEC and a safety hazard as the load would still be live with respect to ground or neutral when turned off. Use as said above like an LED on the DC side . Perfect for my application at a reasonable price! Bummer to hear that it doesn't work with a 3.3V input, I wish I had seen your post before I ordered one. I ordered one of these as a trial and so far is operating fine after several months of continuous use and a year later. The force sensor is going to measure air coming out of a sub woofer. You do not expect to run much with one this small, so you do not push it. Just saying. Also, you may need a power supply that?s greater than 12V or more than 1A worth of current. I turn the oven on and off with variable duty cycle on a 1 second cycle time. I had thought about this. Learn More. 120 V (USA) or 230 V (Europe), are almost always quoted in RMS values, and not peak values. by Member #735257 3) How do I figure the required size of heatsink? I should have read this earlier concerning hooking it up like an LED, now I burned up 2 relays without knowing why... Can these be used in parallel to increase the maximum current allowed? about 6 years ago I know that the coil versions are specific to AC but what about this one? A solid state relay (SSR) is just what it sounds like; an IC that acts like a mechanical relay. Buy a version with a brand name, like Omega and follow their instructions, which say to use a sink. Edit: Got ahead of myself there. by Member #489595 I had a couple of the $US5 "Fotek" fakes I got off Ebay. Hey, I was thinking of starting a Christmas project in which several light strands are timed to music. Now I can digitally control my brewing mash temps! Pricing and Availability on millions of electronic components from Digi-Key Electronics. SparkFun Qwiic Quad Solid State Relay Kit. If you're living in the 230V part of the world, you should definitely go for a 600V version (S208T02, S202S02F). about 2 years ago Why do you need one? by Member #1146265 The load being switched is a 4800W immersion heater at 240V. These relays are Qwiic enabled which means they are plug and play, and now with their very own library it's easier then ever to get started. The SparkFun Qwiic Quad Solid State Relay Kit takes one of our favorite solid state relays and lets you place up to four of them on a single PCB to control all of them via I 2 C from your desired microcontroller. I've hooked these up to Raspberry PIs and ESP8266's no problem. by Member #871915 about a year ago a) As others have said, because it's a triac-based device, it can not be used on a DC load. I have a glass kiln with temperature control within 0.1 degrees in 1000 degrees. by Member #536848 DC SSR is essentially just a MOSFET... Google 'MOSFET as a switch'. This tutorial will walk you through making a timed power controller for interactive projects. View datasheets, stock and pricing, or find other Solid State Relay. ... Updating footprint for Dual Solid State Relay, reversing pins. Per Unit SparkFun Electronics Solid State Relay COM-00100 Power Relay … As a DC load does no such thing, this device can switch it on - but not off. verified purchaser, about 5 years ago IMO don't go 8 amps with these, stay below 5 amps (use a heat sink above 2 amps). Also easy to wire up. AC load only! By smdFan - Mon Mar 23, 2009 3:35 pm - Mon Mar 23, 2009 3:35 pm #69057. If i could post a pic here of the burnt wood and melted housings, I would. At 40A load, that's 64 watt of power you need to dissipate via heat sink! Smart garden sprinkler controller using Windows 10 IoT on a Raspberry Pi with sensors and smarts provided by the Internet. Could this be used to switch 100vdc at 300khz with a 10% duty cycle? by Member #623360 by Member #1111055 SparkFun-Electromechanical.lbr. by Ian R. Overall the project works well, though having a heatsink is mandatory for any loads over maybe 0.5A, anything after that it gets uncomfortably warm (and decreases it's lifetime), at my demand of 160W(1.33A) things get hot enough to make me uncomfortable, the data sheet tells you this same story but you have to read carefully to understand the devices limits, if you try to pull 8A you will need some serious heatsinking or you'll let the magic smoke out, nothing to mess around with when working with 120VAC. So whoever said you don't need a heat sink in the other reviews...think again! Using a toaster oven that draws about 10 amps AC at 120 volts. They failed in the "on" state which was disconcerting. Worse than that, since the triggering element is zero crossing, it would not switch on until ... power is removed ! Peak values can be calculated from RMS values from the above formula, which implies Vp = VRMS × √2, assuming the source is a pure sine wave. Agreed! and handle quite a bit of amperage. Instructions will be included and easy to follow. * Much more limited range on the control voltage. The 40A SSR Relay allows you to control high-curent AC loads from lower voltage DC control circuitry. about 3 years ago Please put this in the description so I don't have to study so hard! Mouser Part # 474-COM-16810. Hi, as stated in the datasheet, it mentioned it has high isolation voltage between input and output. Solid State Relay. So far so good. (Hint: This device is little more than an LED and photo TRIAC and can easily be done that way- but you see it in a similar convienient package...). Solid state relays, have several advantages over mechanical relays. by Member #339294 about 5 years ago about 5 years ago Your knowledge of a datasheet will only require basic features like power requirements, pinouts, or communications type. Controlled with 3V, so is suitable for the output look for, though is! 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