Sensors
Limit temperature sensors, EIA sizes 0402, 0603 and 0805
Symbols and terms
A
Area
Cth
f
Heat capacity
Frequency
I
Current
Imax
IR
IPTC
Ir
Maximum current
Rated current
PTC current
Residual currrent
Ir,oil
Ir,air
IRMS
IS
Residual currrent in oil (for level sensors)
Residual currrent in air (for level sensors)
Root-mean-square value of current
Switching current
ISmax
LCT
N
Maximum switching current
Lower category temperature
Number (integer)
Nc
Operating cycles at Vmax, charging of capacitor
Switching cycles at Vmax, failure mode
Power
Nf
P
P25
Pel
Pdiss
Rmin
RR
∆RR
RP
RPTC
Rref
RS
R25
R25,match
∆R25
T
Maximum power at 25 °C
Electrical power
Dissipation power
Minimum resistance
Rated resistance
Tolerance of RR
Parallel resistance
PTC resistance
Reference resistance
Series resistance
Resistance at 25 °C
Resistance matching per reel/ packing unit at 25 °C
Tolerance of R25
Temperature
t
Time
TA
Ambient temperature
Thermal threshold time
Ferroelectric Curie temperature
ta
TC
Please read Cautions and warnings and
Important notes at the end of this document.
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