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FST Series Datasheet

Thin Film Temperature Sensor 

Fst series product image

 

The FST series design positions the contact surfaces on the side with the active measuring layer. This design produces a sensor in position for face-down mounting. This mounting optimizes current trends in the ‘adhesion instead of soldering’ electronics sector. Using conductive adhesives provides reliable and cost-effective connection to the circuit board and is an alternative to the conventional reflow or wave soldering. The FST series is available in 2 tolerance classes, 0.12% and 0.24% per the DIN EN 60751 specification. Both tolerance classes are available in the three resistance levels of the FST series. 

Specifications

Nom. Resistance (ohms):

100

Tolerance Class:

B

Nom. Resistance (ohms):

100

Tolerance Class:

2B

Nom. Resistance (ohms):

500

Tolerance Class:

B

Nom. Resistance (ohms):

500

Tolerance Class:

2B

Nom. Resistance (ohms):

1000

Tolerance Class:

B

Nom. Resistance (ohms):

1000

Tolerance Class:

2B

 

Other tolerances and values of resistance are available on request.
Resistance taken at 0°C.

Characteristics

DIN EN 60751

Class B (R0: ± 0.12 %), Class 2B (R0: ± 0.24 %)

-50 °C to 170 °C

TCR = 3850 ppm/K

AgPd metallising in thick-film technology

R0 drift ≤ 0.06 % after 1000 h at 170°C

Use unprotected only in dry environments

> 100 MΩ at 20°C; > 2 MΩ at 170°C (glass cover)

100Ω: 0.3 to 1.0 mA

500Ω: 0.1 to 0.7 mA

1000Ω: 0.1 to 0.3 mA

(self heating has to be considered)

0.8 K/mW at 0°C

Flowing water (v = 0.4 m/s): t0.5 = 0.10 s, t0.9 = 0.25 s

Air flow (v = 2 m/s): t0.5 = 2.5 s, t0.9 = 8.0 s

Reflow soldering or wave soldering, e.g. double wave soldering < 8 s / 235°

Also can be mounted using SMD insertion machines with Ag conductive adhesive.

When mounting PCB circuits, the expansion relationship of the sensor and the substrate material must be taken into account.

Stored in a nitrogen atmosphere, min. 9 months

"Face-down" in blister reel, 1000 pcs / reel

Dimensions

FST series dimensions

 

Nominal Resistance Values

100Ω / x10 for 1000Ω

fst series chart 1000Ω

Ordering Information

FST series Ordering info

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