NF13AA0150MER AVX Corporation, NF13AA0150MER Datasheet - Page 3

• Manufacturer Part Number: NF13AA0150MER
• Manufacturer: AVX Corporation
• Type: NTCr

Specifications of NF13AA0150MER

• Mounting Style: Through Hole
• Pin Count: 2
• Screening Level: Automotive
• Resistance @ 25c: 15Ohm
• Thermal Time Constant: 100s
• Percentage Of Resistance Tolerance @ 25c: ±20
• Operating Temperature Min Deg. C: -40C
• Operating Temperature Max Deg. C: 200C
• Product Length (mm): Not Requiredmm
• Product Height (mm): Not Requiredmm
• Lead Free Status / RoHS Status: Supplier Unconfirmed

NTC Inrush Current Limiters
Thermistors
Application Guide
1 – HOW TO DETERMINE THE
• If the ambient temperature is 25°C:
• If the ambient temperature is different from 25°C:
2 – HOW TO CALCULATE THE
Example: NF08AA0330M
• From the graph V (I) page 32, we find V
• From the graph R(T), page 32, at R = 11
Example: maximum steady state current of
the current is given in table page 30.
the current at 25°C must be derated as specified in the
graph below.
fore, R
T ± 65°C
Derating of maximum steady state current with
1.00
0.80
0.60
0.40
0.20
0.00
MAXIMUM STEADY STATE
CURRENT OF NF THERMISTORS?
WORKING TEMPERATURE OF
NF THERMISTOR?
-40 -20
SS
NF13AA0100M at 60°C ambient:
I
I
SS max25
SS
= 11
= 0.2 A,
0
ambient temperature
x 0.9 = 3.0 A.
20
AMBIENT TEMPERATURE ( C)
40
T
60
ambient
80
100 120 140 160 180 200 220
= 25°C
Not recommended for permanent use
SS
= 2.2 V there-
, we find
3 – HOW TO CALCULATE THE
Example: NF13AA0100M
•
• As R
The working temperature of this NF thermistor is about
195°C when operating under I
temperature is the one for which we have T = 562.5 R
60).
Important: A discrepancy may exist between practice and
R
solved by an algebraic way. The quickest manner to solve
it is to operate by iterations:
for NF13,
therefore, the equation becomes:
from the R
T (°C)
185
190
195
200
T
WORKING POINT OF NF
THERMISTOR AT A DIFFERENT
AMBIENT TEMPERATURE THAN
25°C?
I
SS
T
T = 562.5 R
2
depends on T, this equation is quite complex to be
I
T =
=
SS
theory due to the tolerance of the thermistor
(±20% usually).
T
= 3 A, T
(T-T
= 16 mW/K (see page 29)
curve page 33 we find R
R
0.28
0.26
0.24
0.22
T
R
A
( )
T
) and thus
I
T
SS
ambient
+ 60
2
+ T
➾
= T
SS
A
A
= 3 A and T
= 60°C
562.5 R
T
starting from T:
217
206
195
184
A
T
= 60°C (this
+ 60 (°C)
T
31
+