FT Thermistor (thin film type)

FT thermistors are unlike any conventional thermistors, featuring fast response time, high heat resistance and reliability, realized through ultra-miniaturization. SEMITEC’S FT thermistors are fully compliant with RoHS DIRECTIVE2011/65/EU.

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Applications

Office automation equipment, measuring instruments, medical equipment, security, LCDs, laser diode modules

Part number

Dimensions

Rating

Part No. R251 R25Tolerance B-value2 Dissipation factor
mW/℃
Thermal time constant
s3
Rated power
mW at 25℃
Operating Temperature range
1:Pt 2:Au/Ni 3:Au
103FT1005 10.00kΩ ±5% 3370K±1% approx. 0.3 approx. 1.0 1.5 -40

+250
(+350)
-40

+125
-40

+250
3435K±1%
503FT1005 50.00kΩ 3370K±1%
3435K±1%
364FT1005 360.0kΩ 3370K±1%

1: Rated zero-power resistance at 25℃
2: B-value determined by rated zero-power resistance at 25℃ and 85℃
3: Time required to reach 63.2% of temperature difference. Measured in still air.

Validation

Test Details Passing Criteria
Free fall H = 0.75m (3 times on wooden board) ΔR, ΔB±1%
Insulation resistance DC100V > 100MΩ

Important

- Please contact us regarding attachment/mounting methods and handling.
- Please contact us if you are considering a temperature range above specification (up to 350℃).
- We also manufacture custom versions of the FT thermistor to better suit our customer's applications.