Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [heat-protection]

65 questions
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10 answers

How to solder a 70 °C (158 °F) thermal / temperature fuse

For my DMX project (schematics is not important), I soldered this temperature fuse which has just two leads (see picture below). The fuse doesn't work (meaning it does not conduct electricity) ... which of course is logical since my soldering…
Michel Keijzers
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Warming PCB in a low temperature environment

I have to develop a microcontroller circuit that will run at low temperatures (as low as -60C). I want to heat the FR4 PCB board until it reaches the commercial temperature range above -40C. I found some flexi heaters to heat the PCB. What other…
zontragon
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Is it a good idea to use a single heatsink for two IC's?

I am using a 7805 IC along with a diode bridge Br805D (bridge rectifier) IC on a general purpose PCB, with a 220V / 50Hz AC input. Both the components tend to heat up really quick and I plan to set up a heat sink. My question is: Is it correct to…
Shakti Phartiyal
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What kind of damage could a soldering iron do to a component?

As a follow-up to this question, what kind of damage could a soldering iron do to an IC or other component if left on it for too long at too high a temperature? ESD damage can be subtle, for instance. Is overheating damage usually obvious/complete…
endolith
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How is "Overtemperature shutdown/protection" implemented for ICs?

IC data sheets often give some informations about the circuits over-temperature protection. Lets take a Microchip LDO (MCP1702) for example: "...If the power dissipation within the LDO is excessive, the internal junction temperature will rise above…
Rev
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How can I prevent a 556 timer IC from becoming very hot?

I built the circuit described in a previous question/answer which I will repost here: It's been running quite well, actuating the solenoid at regular intervals as designed. The TIP122 transistor is barely warm, the solenoid is within normal…
JYelton
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Better approach for maximizing Cooling Fan Life Expectancy

We are working on a product which is extremely cost sensitive. It generates a lot of heat so we are planning to use a heat sink. For those 'very rare edge causes' where heat sink alone cannot cool down the system, we have also equipped the system…
Bhavneet Singh Bajwa
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4
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2 answers

Do Thermal Cutoff switches exist for temperatures below 50 C?

I have been trying to find some passive thermal cutoff switches for a project, but it seems that all of them are for 65 degrees C and up. Is there another name for lower temperature TCOs? Any help in finding these would be very much appreciated.
Xantham
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Voltage regulator too hot to touch

I'm working on an RGB LED project. I'm using this as the power supply: https://www.sparkfun.com/products/114 It uses an LM317 which according to the data sheet can supply up to 1.5A. The LED's I'm using are these:…
Lloyd
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Can a CPU heatsink be used to cool a TO-3P or a TO-220?

I want to know if my thermal design is appropriate for dissipating 72W of heat while keeping the junction temperature below 150 °C (I am trying to cool an SFH154 that comes in a TO-3P package). My thermal circuit consists of a junction-to-case…
A.H.Z
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Can a heatsink protect a PYNQ-Z1 board from damage? If so, which one should I use?

I'm going to purchase a PYNQ-Z1 FPGA development board from Digilent (Link: https://store.digilentinc.com/pynq-z1-python-productivity-for-zynq/). However, some of the comments on the linked page say that the board runs very hot and they should have…
N.E.C.
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How much humidity can a microcontroller/embedded device withstand?

I'm working on a project that employs a microcontroller in an 80-85°F environment with quite a bit of humidity. It's going to be placed directly next to an array of fish tanks. Obviously, the water can damage the device if water is spilled on it but…
jpxrc
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Electronics in high temperature environments

I'm relatively (ok, very) new to electronics. I'm trying to find where to buy parts (or even just more information on what sort of materials I should be looking for) to build a circuit board with a micro controller and RF transmitter that can…
Brandon
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Wireless water level sensor, in sump. Installation best-practices for longivity

My wireless water-level sensor is working fine, and when deployed in the sump-well, it is giving me periodic readings quite well. At this stage, I have the circuit still on a breadboard, and now plan to put it on a veroboard, and finally install…
bdutta74
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Soldering 18650; is an FX-888D good enough?

So, I want to make a 18650 battery pack but don't have access to a spot welder. I'm wondering whether a FX-888D would be good enough to do the job quickly and so minimize risk of damaging the cells. If yes, any other tips to avoid overheating? And…
Gregorio Litenstein
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