STTS Series Type 7

Hexagonal Stud Type

Applications

Surface temperature measurement

e.g.: Refrigerators, Freezers Air Conditioners

Features

High accuracy

Easy mounting

Good thermal coupling through Hexagonal Screw

Options

(Available on request)

Alternative resistance ratings

Rated temperatures, tolerances and lead lengths

Encapsulation (Options available on request)
E43 – 10 mm Hexagonal Stud
E44 – 13 mm Hexagonal Stud

Type of Lead (Options available on request)
KH – 26 AWG Silver Plated Copper Wire
KK – 24 AWG Silver Plated Copper Wire
KF – 28 AWG Silver Plated Copper Wire

Lower Temperature : -40°C

Upper Temperature : 140°C

Max Permissible Power at 25°C : 60 mW

Resistance Tolerance (ΔR/RN ) : ±0.5%, ±1%, ±2%, ±5%

Rated Temperature (TN) : 25°C

Dissipation factor in air(δth) : approx 7 mW/K

Thermal cooling time constant in air (τc) : ≈ 130s

Beta Tolerance (Δβ/βN) : ±1%, ±2%, ±3%,

Heat capacity (Cth) : ≈ 900 mJ/K

Electrical Data

Resistance At 25°C (Ω)

Beta Value (25/85) (K)

2000

3540

2057

3540

2100

3900

2800

3977

3000

3977

4700

3977

5000

3977

10000

3977

Resistance At 25°C (Ω)

Beta Value (25/85) (K)

20000

4000

30000

4050

47000

4100

49300

3960

50000

4100

100000

4400

170000

4250

*Customizations may be possible

Reliability Data

Test

Standard Test conditions

ΔR25/R25

Remarks

Storage in dry heat

IEC 60068-2- 2

Storage at upper category temperature T: 100 °C t: 1000 h

< 2% No visible damage
Storage in damp heat, steady state IEC 60068-2-78 Temperature of air: 40 °C Relative humidity of air: 93% Duration: 56 days < 2%   No visible damage
Storage in coldness   Storage at lower category temperature T: -30 °C t: 1000 h < 2% No visible damage
Rapid temperature cycling (in air) IEC 60068-2-14

Lower test temperature: -30 °C Upper test temperature: 100 °C Time to change from lower to upper temperature: <30 s Number of cycles: 1000 Medium: oil

< 2% No visible damage
Vibration resistance IEC 60068-2- 6 Frequency range: 5 to 500 Hz Amplitude: 7.5 mm, 2 g Duration: 3 x 8 h < 3% No visible damage
Long-term stability (empirical value)   Temperature: 100 °C t: 10000 h < 3% No visible damage
Voltage proof test   1500 V AC, 1 s   No flashover
Insulation test  

The sensors are placed in a vessel containing metallic balls of 1 mm diameter (with total immersed head). The applied voltage is 100 V DC.

  Above 100 MΩ

Part Number Identification

PRODUCT SERIES CODE RESISTANCE AT 25⁰C (10 X 10³ Ω) (10 KΩ) RES.TOL ENCAPSULATION TYPE OF LEAD WIRE GUAGE TOTAL LENGTH 10 X 10² mm (1000 mm) BETA (25/85) CONNECTOR
STTS 103 R5 E44 K H 102 3977 C5
Ordering Codes for surface mounting type NTC Thermistors

STTS *** R# E%% @@ $$$ &&&& C!!
*** = Resistance Value at 25°C (e.g. 102- 1000Ω, 201 -200Ω, 103 – 10kΩ)
# = Resistance Tolerance (eg. R1 – ± 1%, R5 – ±5%)
%% = Encapsulation (eg. E44 – 13 mm Hexagonal Stud)
@@ = Type of Lead (eg. KH, K – PTFE-insulated Multistrand Copper Wire & H – 26 AWG)
$$$ = Total Length in mm (eg: 251 – 250mm Length, 401 – 400 mm Length)
&&&& = Beta Value (eg:3977K, 3830K)
!! = Connector (eg: C1 – JST XHP-2 PIN)

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