All Questions
Tagged with heatsink heat-protection
18
questions
0
votes
2
answers
55
views
Generic thermal resistance values for a heatsink
I am building a linear power supply, and I would like to know roughly how big my heatsinks need to be. Is there a rule of thumb for the thermal resistance of a heatsink given its dimensions and ...
- 392
3
votes
2
answers
703
views
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 ...
- 633
1
vote
1
answer
465
views
RF Module Gets Too Hot
I'm using the RFM98PW-433S2 1W(+30dBm) 433MHz RF module. After a couple of minutes of working the module gets to above 70°C temperature. Probably reaches 90°C and above after couple more minutes. I ...
- 95
1
vote
4
answers
1k
views
Can you connect two LM317s either in series or parallel to help spread out heat?
I am designing an adjustable voltage regulator.
The regulator will have be able to switch between maximum Vout of 9V, 12V, 15V and 18V and will have a variable resistor that can adjust the voltage ...
- 107
0
votes
3
answers
448
views
What is this thermal adhesive? (heat transfer compound)
Well generally I I encounter this thermal adhesive. for example in inverter (brand: allen bradley). But it is different from I've seen before. It is very solid and generally using at very strange ...
- 1,139
0
votes
1
answer
47
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Is it okay to leave regulators heating at higher end of range of operating range?
IC operating range -20 to 80 degrees Celsius
Regulator IC application spec 12V in, 5V 1.5A output
Is it okay to keep IC running at 70-75 degree Celsius (with heat sink) all the time, circuit will be ...
- 194
0
votes
1
answer
241
views
Trying to get 2 Amps out of 3 Amp Regulator (MIC29302WU)
I am trying to get 5V,2A out of the MIC29302WU (TO-263 package) with an input voltage of 12V. The voltage drops to around 2.2V when trying to supply even 1.3A. Blowing canned air over the regulator ...
- 463
0
votes
1
answer
695
views
LF33CV voltage regulator overheating
I'm trying to turn on a laser (3.3v - 4.5v, 100mw) using a 9v battery and LF33CV as voltage regulator(TO220 package, 3.3v output). After 20 seconds the voltage regulator is getting so much hot. I was ...
- 237
3
votes
2
answers
397
views
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 ...
- 31
-2
votes
2
answers
317
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What do we mean by bidirectional TEC?
I have designed a H-Bridge driving circuit for TEC where the polarity across the TEC (load) changes according to heating and cooling application. But when I am searching for TEC Module they have ...
- 45
1
vote
1
answer
279
views
Heat sinking ideas for an HZIP package
I'm building a design involving Toshiba's TB6600 chip which has an unusal HZIP25-P-1.00F package. I've seen implementations where folks have bent the pins manually and soldered them horizontally such ...
- 1,340
14
votes
3
answers
4k
views
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 ...
- 301
0
votes
1
answer
73
views
Internal thermal limit of LF00 voltage regulators
Reading the datesheet of the LF00 voltage regulator series leads to a basic question to myself.
The basic facts at the beginning of the sheet telling me, there is a logic with an
INTERNAL CURRENT ...
- 111
2
votes
2
answers
2k
views
Can conformal coating help against high-temperature environments if the chips heat up as well?
I have seen many claims of conformal coating helping for protection against, amongst many other things, extreme temperature.
One such claim in here would be: Question regarding PCB coating
My ...
- 123
1
vote
1
answer
818
views
L705CV Voltage Regulator Overheating [duplicate]
The L805CV voltage regulator is capable of producing a consistent 5v 1.5A draw. I am creating a small raspberry pi case and have a 12v 3a power supply to accomplish the project. I am powering a 12v ...
- 15