Basics of NTC and PTC Thermistors - Another Teaching Moment | Digi-Key Electronics

A thermistor’s resistance value increases or decreases with changes in temperature and are an effective first line of defense against inrush current and random overcurrent in electronic circuits. In this video, the differences, characteristics and real-world operation of NTC and PTC thermistors are explained in detail.
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[@deankay4434]

I added four NTC thermistors, one for each cooktop burner. Shut off a burner say after boiling eggs, the element stays hot for some time. The power goes thru fuse, resistors designed for the LED, to the NTC thermistor to ground. Drilling into low grade magnetic stainless steel is easy. Mount the LED with "HOT" on lens's next to the control knob. They make these models but cost $700 more. I spent $18 uncle Joe dollars for lamp, thermistor and had wire using one 5 amp fuse in one holder. Schematic is under top taped to outer edge for future repair guy!! Have a lucky one...

[@danielv3228]

Great video. Thanks

[@jaykesapalaran5434]

Good tutorial sir 💌

[@habtamusium8646]

informative ! thanks .

[@Electronzap]

Great explanation of transistors 🙂

[@luisb.a7397]

I\'m not sure but ,if anyone else wants to discover how to make basic electronic circuits try Bablim Electronics Booster (Have a quick look on google cant remember the place now ) ? Ive heard some interesting things about it and my mate got amazing success with it.

[@dustind3502]

Thanks, I did not know they were used for the function of limiting current.

[@ntcthermitors508]

We are a professional and leading manufacturer about NTC Thermistor, for Temperature Compensation & Temperature Measurement Sensor Probe Type. With our Production & Engineering Team having more than 20 years of experiences endeavored in NTC Thermistor field, we continuously develop new products and techniques to extend our capabilities. Shiheng's core expertise in design and manufacturing has produced many innovative products of superior quality with exceptional value. Nanjing Shiheng Electronic, Co ., Ltd (QUALITY IS OUR CULTURE) WhatsApp：[phone] Telephone:[phone] Fax:[phone] Mob:[phone] Email: [e-mail] [e-mail] Website: www.ntcshiheng.com/ Add: No 18 Jinyang Road, Hushu Town, Jiangning District, Nanjing，China 211121

[@MattG171]

Digi key is a great company

[@ferdi9621]

Hi! What happens if i connect in parallel an Ntc and a Ptc? Will i have a sum of their value o will they cancel each other? I would need a ptc to balance the lower Resistance of an Ntc... Thanks!

[@shadow7037932]

Great intro video to thermistors.

[@ntcthermitors508]

We are a professional and leading manufacturer about NTC Thermistor, for Temperature Compensation & Temperature Measurement Sensor Probe Type. With our Production & Engineering Team having more than 20 years of experiences endeavored in NTC Thermistor field, we continuously develop new products and techniques to extend our capabilities. Shiheng's core expertise in design and manufacturing has produced many innovative products of superior quality with exceptional value. Nanjing Shiheng Electronic, Co ., Ltd (QUALITY IS OUR CULTURE) WhatsApp：[phone] Telephone:[phone] Fax:[phone] Mob:[phone] Email: [e-mail] [e-mail] Website: www.ntcshiheng.com/ Add: No 18 Jinyang Road, Hushu Town, Jiangning District, Nanjing，China 211121

[@mixme8655]

Thank you sir

[@jamesdriscoll9405]

Any tips on how to physically mount these for best thermal response?

[@digikey]

Depends largely on what type you are using (physical shape). One BIG tip is to ensure that you use good Thermal interface material(TIM) so there is no air gap to slow the thermal response. Thermal paste is the most common.

[@raymondb.mayango90]

these are really reliable

[@heamorhoid]

if I have NTC 10k with 30 cm wires, can I prolong wires, for example to 2 meters, without any functionality problems? Thx.

[@ntcthermitors508]

We are a professional and leading manufacturer about NTC Thermistor, for Temperature Compensation & Temperature Measurement Sensor Probe Type. With our Production & Engineering Team having more than 20 years of experiences endeavored in NTC Thermistor field, we continuously develop new products and techniques to extend our capabilities. Shiheng's core expertise in design and manufacturing has produced many innovative products of superior quality with exceptional value. Nanjing Shiheng Electronic, Co ., Ltd (QUALITY IS OUR CULTURE) WhatsApp：[phone] Telephone:[phone] Fax:[phone] Mob:[phone] Email: [e-mail] [e-mail] Website: www.ntcshiheng.com/ Add: No 18 Jinyang Road, Hushu Town, Jiangning District, Nanjing，China 211121

[@christianeriksson4733]

Longer cables will affect the resistance and thereby the voltage drop over the two leads with the thermistor at a constant current. This may fool your measuring equipment into thinking that temperature changed the thermistor circuit restistance when it was actually only the longer leads. One way to deal with this would be to account for the known characteristics of the longer leads in the measuring software, or even increasing the voltage proportional to the voltage drop in the longer leads. Maybe another wire material and thickness could balance some of the changes in characteristics.

[@whitesheatingairappliancer7101]

Which thermistors are used in refrigerator and freezer?

[@digikey]

It is likely going to be an NTC used as a temperature sensor. If you need help finding a replacement please contact our technical staff via the TechForum and send images and any specifications you may have. forum.digikey.com/

[@appliancerepairvlogs7089]

#appliancerepairvlogs 👍👍

[@Lukosite01]

I feel like the graphic for current limiting is misleading

[@pigdick2233]

I’ve seen these in a vintage electric organ I used for parts

[@JeoWilson]

They are basically fuses. PTC is perfect example. FTC is more like surge protection.

[@JeoWilson]

Both will burn out and potentially protect the device. PTC if the current is too high. FTC if the surge is too strong. If you ever owned an old tube television you know how it takes a few seconds to get to full power. FTC tube protection.... Some things need finesse others need a compasitor to ram it! Not a tube though that would crack it.

[@ntcthermitors508]

We are a professional and leading manufacturer about NTC Thermistor, for Temperature Compensation & Temperature Measurement Sensor Probe Type. With our Production & Engineering Team having more than 20 years of experiences endeavored in NTC Thermistor field, we continuously develop new products and techniques to extend our capabilities. Shiheng's core expertise in design and manufacturing has produced many innovative products of superior quality with exceptional value. Nanjing Shiheng Electronic, Co ., Ltd (QUALITY IS OUR CULTURE) WhatsApp：[phone] Telephone:[phone] Fax:[phone] Mob:[phone] Email: [e-mail] [e-mail] Website: www.ntcshiheng.com/ Add: No 18 Jinyang Road, Hushu Town, Jiangning District, Nanjing，China 211121

[@colin5064]

this video does not teach how to read thermistor values printed on them ref PTC C 840?

[@jamesmatheson5813]

Then make a battery that stays at 45 celsius Charging lithium-ion battery is possible in a temperature range of 10°C to +55°C. However, the charging should take place only at a battery temperature of +5°C to +45°C."