NTC The rm istor SMD
2012(0805) size
B constant
25/85
Dissipation
Constant
Maximum
Power Rating
o
Resistance @25
Operating Temp.
Part Number
C
LNSK20 _ 502_ _
LNSK20 _ 103_ _
LNSY20 _ 102_ _
LNSY20 _ 222_ _
LNSY20 _ 472_ _
LNSY20 _ 502_ _
LNSY20 _ 682_ _
LNSY20 _ 103_ _
LNSW20 _ 103_ _
LNSW20 _ 223_ _
LNSW20 _ 443_ _
LNSV20 _ 202_ _
LNSV20 _ 222_ _
LNSV20 _ 272_ _
LNSV20 _ 332_ _
LNSV20 _ 103_ _
LNSV20 _ 333_ _
LNSV20 _ 473_ _
LNSV20 _ 503_ _
LNSV20 _ 583_ _
LNSV20 _ 683_ _
LNSV20 _ 853_ _
LNSV20 _ 104_ _
LNSV20 _ 124_ _
LNSV20 _ 154_ _
LNSV20 _ 334_ _
LNSV20 _ 474_ _
LNSU20 _ 683_ _
LNSU20 _ 104_ _
LNSU20 _ 105_ _
LNST20 _ 474_ _
5§
10§
1§
3435K
3435K
3670K
3670K
3670K
3670K
3670K
3670K
3890K
3890K
3890K
4150K
4150K
4150K
4150K
4150K
4150K
4150K
4150K
4150K
4150K
4150K
4150K
4150K
4150K
4150K
4150K
4550K
4550K
4750K
4750K
2.2§
4.7§
5§
-40~125o
C
6.8§
10§
10§
22§
44§
2§
2.2§
2.7§
3.3§
10§
33§
47§
50§
58§
68§
85§
100§
120§
150§
330§
470§
68§
100§
1§
-40~85o
C
3.5mW/oC
350mW
-40~125o
C
470§
If you want additional spec., please contact to lattron. Fax : 82-42-935-2034 Email : lattron@lattron.com
oC
Resistance @ 25
o
The zero-power resistance at the standard temperature of 25 . The zero-power resistance means the value of DC resistance of a thermistor measured at a specified temperature,
C
with electric load being kept so small that there is no noticeable change in the measured resistance by the influence of the applied electric load.
Bconstant 25 / 85
o
o
B = ln(R0/R1) / (1/T0 - 1/T1) Without special note, B constant is calculated from the resistance values at 25 and 85 [B25/85], which is the most common.
C
C
Dissipation constant (¥)
Dissipation factor is defined as the ratio at a specified ambient temperature of a change in power dissipation in a thermistor to the resultant body temperature change.
¡⁄¥ = P/( T ¡⁄P : dissipated power
- 25o ) mW/ o ¡⁄T1 : thermistor temp, 85¡ 0.1o
Maximum power rating P
This is the maximum handling power, keeping its temperature not exceeding the allowed maximum temperature for operation.
1
C
C
C
¡⁄Pmax = ¥(Tmax - T
Thermal Time Constant
The time necessary for an unloaded thermistor to vary its temperature by 63.2
temperature is 47.1¡ 0.1o
a
)
¡⁄¥:dissipation constant
¡⁄T
a
:25o
C
¡⁄Tmax:125o
C
%
of the difference between its initial and final temperatures. Initial temperature is 85¡ 0.1o
C and final
C
.
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