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EPCOS |
Temperature Measurement
Leadless Disks
Applications
I Automotive electronics, e.g.
– measurement of cooling water
and oil temperature
Features
I Thermistor disk with lapped, coplanar
front surfaces
I Front surfaces silver-plated
I For clamp contacting
Options
Alternative resistance ratings,
rated temperatures and resistance tolerances
available on request
Delivery mode
Bulk
Climatic category (IEC 60068-1)
Max. power at 25 °C
Resistance tolerance
Rated temperature
B value tolerance
Dissipation factor (in air)
Thermal cooling time constant (in air)
Heat capacity
P25
∆RN/RN
TN
∆B/B
δth1)
τc1)
Cth1)
B57350
K 350
Termination
D = 3,5 ± 0,3 mm
L = 1,3 ± 0,4 mm
Approx. weight 75 mg
55/155/21
180
±5%
100
± 1,5 %
approx. 2,5
approx. 18
approx. 45
mW
°C
mW/K
s
mJ/K
R100
Ω
70
R25
Ω
990,2
No. of R/T
characteristic
1009
B25/100
K
3930
Ordering code
B57350K0102J000
1) Depends on mounting situation
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Temperature Measurement
Leadless Disks
B57350
K 350
Reliability data
Test
Storage in
dry heat
Storage in damp
heat, steady state
Rapid temperature
cycling
Endurance
Long-term stability
(empirical value)
Standard
IEC
60068-2-2
Test conditions
Storage at upper category tem-
perature
T: 155 °C
t: 1000 h
∆R25/R25 (typ.) Remarks
<3%
No visible
damage
IEC
60068-2-3
Temperature of air: 40 °C
Relative humidity of air: 93 %
Duration: 21 days
<3%
No visible
damage
IEC Lower test temperature: – 55 °C < 3 %
60068-2-14 Upper test temperature: 155 °C
Number of cycles: 100
No visible
damage
Pmax: 180 mW
t: 1000 h
<3%
No visible
damage
Temperature: 125 °C
t: 10 000 h
<5%
No visible
damage
69 05/02
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