Features : NTC Thermistor (Chip type)

Characteristics of products

Our NTC Thermistors are top-level in the industry and possess following characteristics

  • 特徴1

    They are surface-mount type products. They are available in a variety of B-values, resistance values and sizes(01005・0201・0402・0603 size).

  • 特徴1

    Multilayer structure and our original external electrode forming technology enabled obtaining high-reliability.

  • 特徴1

    We also have automotive components having great heat-resisting properties (up to 150℃)

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About NTC Thermistors

ぐるぐる NTC Thermistor is a ceramic element that changes its resistance value
as the ambient temperature change.

○ Appearance

About NTC Thermistors1

○ Construction

About NTC Thermistors2

○ Temperature characteristics

About NTC Thermistors3

Elemental technology

We realized high-reliability by creating high-insulation layer, using our electrode forming technique!

Conventional technology Panasonic
Conventional technology panasonic
Because of not having high-insulation layer, it is easily affected by external factors : reflow soldering, surrounding environment and atmosphere. The internal electrodes are protected by high-insulating layer, so it’s not easily affected by external factors : reflow soldering, surrounding environment, and atmosphere.

〔An image of change in resistance value through the reflow soldering and reliability test〕

An image of change in resistance value through the reflow soldering and reliability test

Panasonic’s thermistor maintains temperature control in high precision for a long period.

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Items of basic reliability tests

We can conduct additional tests to meet your special demands.

No. Items Testing methods Perfomance
Evaluation items Standard High precision In-vehicle
1 Shock resistance Shock waveform: Semisinusoidal wave 11ms
Impact acceleration : 50G
Impact direction : X-X’ ,Y-Y’, Z-Z’(3 times for each direction)
Change rate of
Resistance
- - Within ±2%
Change rate of
B-value
- - Within ±1%
2 Temperature cycle -40(in-vehicle:-55)±3℃(30±3min.)
→Room temp.(3min. max)
→125±3℃(30±3min.)
→Room temp.(3min. max)
*The operation prescribed above is one cycle, and repeat it for 100 times
(in-vehicle components: repeat 2000 times)
Change rate of
Resistance
Within ±3% Within ±2% Within ±2%
Change rate of
B-value
Within ±2% Within ±1% Within ±1%
3 Moisture resistance Testing temperature: 85±2℃
Relative humidity: 85±5%
Testing time:1000+48/0 hours
(in-vehicle components :2000+48/0 hours)
Change rate of
Resistance
Within ±3% Within ±3% Within ±2%
Change rate of
B-value
Within ±2% Within ±1% Within ±1%
4 Damp heat load Testing temperature: 85±2℃
Relative humidity: 85±5%
Power applying: 10mW
Testing time:1000+48/0 hours
(in-vehicle components: 2000+48/0 hours)
Change rate of
Resistance
Within ±3% Within ±2% Within ±2%
Change rate of
B-value
Within ±2% Within ±1% Within ±1%
5 Low
temperature storage
Testing temperature: -40±3℃
Testing time:1000+48/0 hours
(in-vehicle components: 2000+48/0 hours)
Change rate of
Resistance
Within ±3% Within ±2% Within ±2%
Change rate of
B-value
Within ±2% Within ±1% Within ±1%
6 High
temperature storage #1
Testing temperature: 85±3℃
Testing time: 1000+48/0 hours
Change rate of
Resistance
- Within ±2% -
Change rate of
B-value
- Within ±1% -
7 High
temperature storage #2
Testing temperature: 125±3℃
Testing time: 1000+48/0 hours
(in-vehicle component:2000+48/0 hours)
Change rate of
Resistance
Within ±3% Within ±2% Within ±2%
Change rate of
B-value
Within ±2% Within ±1% Within ±1%
8 High
temperature storage #3
Testing temperature: 150±3℃
Testing time: 1000+48/0 hours
Change rate of
Resistance
- - Within ±3%
Change rate of
B-value
- - Within ±2%

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