NTC Inrush Current Limiters
Thermistors
NF 08 - 10 - 13 - 15 - 20
(For more details see also the catalog dedicated to this range)
OUTLINE DRAWINGS
D
millimeters (inches)
e
3mm max.
H1
Notes
H
H1
I
LS
d
Straight leads
(Suffix - - or HB)
Internal kink
(Suffix HL or 1N)
Y kink
(Suffix HY or 2B)
Notes: In case of adding strength to the lead wire from the side, it may occur crack and fragment at a part of pant leg.
* 0.6 mm copper wire and 5.08 mm leads spacing for those two types.
DIMENSIONS
Type
NF08*
NF08
NF10*
NF10
NF13
NF15
NF20
millimeters (inches)
D max
mm
9.5
9.5
11.5
11.5
15.0
17.0
22.0
(.374)
(.374)
(.453)
(.453)
(.591)
(.669)
(.866)
e max
mm
5.0 (.197)
5.0 (.197)
5.0 (.197)
5.0 (.197)
6.0 (.236)
6.0 (.236)
6. (.236)
H max
mm
13.0
13.0
15.0
15.0
18.0
20.0
25.0
H1 max
mm
(.512)
(.512)
(.591)
(.591)
(.709)
(.787)
(.984)
16.0
16.0
18.0
18.0
22.0
24.0
29.0
(.630)
(.630)
(.709)
(.709)
(.866)
(.945)
(1.142)
I min
mm
30
30
30
30
30
30
30
(1.181)
(1.181)
(1.181)
(1.181)
(1.181)
(1.181)
(1.181)
d
±0.02 mm
(±0.008)
0.6 (.024)
0.8 (.031)
0.6 (.024)
0.8 (.031)
0.8 (.031)
1.0 (.039)
1.0 (.039)
LS
±0.8 mm
(±0.030)
5.08 (.20)
7.62 (.03)
5.08 (.20)
7.62 (.30)
7.62 (.30)
7.62 (.30)
7.62 (.30)
GENERAL CHARACTERISTICS
Type
NF08*
NF08
NF10*
NF10
NF13
NF15
NF20
Standard
tolerance**
%
20
20
20
20
20
20
20
Maximum
operating
T°C
-40 / +200
-40 / +200
-40 / +200
-40 / +200
-40 / +200
-40 / +200
-40 / +200
Max power
25°C
Watts
1.6
2.2
2.0
2.6
3.2
4.1
5.0
Thermal
dissipation
δth (mW/K)
8
11
10
13
16
20
25
Thermal time
constant
τC (s)
60
60
75
75
100
115
160
Heat
capacity
H (mJ/K)
480
660
750
975
1600
2300
4000
Packing
bulk tape
√
√
√
√
√
√
√
√
√
√
√
√
√
-
* 0.6 mm copper wire and 5.08 mm leads spacing for those two types.
** Other tolerances available: L: ±15, X: ±25%
SUFFIXES FOR BULK PACKING (Suffixes for taping: see page 35)
-HB
HL
straight leads 0.8 or 1 mm wire diameter and 7.62 lead spacing
straight leads 0.6 mm wire diameter and 5.08 lead spacing
internal kink 0.8 mm or 1 mm wire diameter and 7.62 lead spacing
1N
HY
2B
internal kink 0.6 mm wire diameter and 5.08 lead spacing
Y kink 0.8 or 1 mm wire diameter and 7.62 lead spacing
Y kink 0.6 mm wire diameter and 5.08 lead spacing
HOW TO ORDER
NF13
AA
0509
M
--
Type
Inrush
Current
Limiters
Resistance
5 kΩ
Tolerance
M (±20%)
Suffix
Bulk, Straight Leads
(See illustration above)
29
Table of Values
NF 08 - 10 - 13 - 15 - 20
cUL
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
Ceramic
Disc
ø (mm)
08
08
10
10
13
15
20
Part number
reference
Type
NF08AA0509MHB
NF08AA0809MHB
NF08AA0100MHB
NF08AA0150MHB
NF08AA0330MHB
NF08AA0509M - NF08AA0809M - NF08AA0100M - NF08AA0150M - NF08AA0330M - NF10AA0259MHB
NF10AA0409MHB
NF10AA0509MHB
NF10AA0809MHB
NF10AA0100MHB
NF10AA0160MHB
NF10AA0200MHB
NF10AA0250MHB
NF10AA0500MHB
NF10AA0800MHB
NF10AA0121MHB
NF10AA0259M - NF10AA0409M - NF10AA0509M - NF10AA0809M - NF10AA0100M - NF10AA0160M - NF10AA0200M - NF10AA0250M - NF10AA0500M - NF10AA0800M - NF10AA0121M - NF13AA0259M - NF13AA0509M - NF13AA0709M - NF13AA0809M - NF13AA0100M - NF13AA0150M - NF13AA0220M - NF13AA0330M - NF13AA0400M - NF13AA0600M - NF15AA0139M - NF15AA0159M- NF15AA0259M - NF15AA0309M - NF15AA0409M - NF15AA0509M - NF15AA0609M - NF15AA0709M - NF15AA0809M - NF15AA0100M - NF15AA0120M - NF15AA0160M - NF15AA0200M - NF15AA0250M - NF15AA0330M - NF15AA0400M - NF15AA0470M - NF20AA0259M - NF20AA0409M - NF20AA0509M - NF20AA0100M - NF20AA0150M - NF20AA0330M - -
* cL/L approval (File E167822)
.• Electrical performances for suffixes HL and HY are identical to the suffix - -.
• Electrical performances for suffixes 1N and 2B are identical to the suffix HB
30
Zero power
resistance
R25°C (Ω)
5.0
8.0
10.0
15.0
33.0
5.0
8.0
10.0
15.0
33.0
2.5
4.0
5.0
8.0
10.0
16.0
20.0
25.0
50.0
80.0
120.0
2.5
4.0
5.0
8.0
10.0
16.0
20.0
25.0
50.0
80.0
120.0
2.5
5.0
7.0
8.0
10.0
15.0
22.0
33.0
40.0
60.0
1.3
1.5
2.5
3.0
4.0
5.0
6.0
7.0
8.0
10.0
12.0
16.0
20.0
25.0
33.0
40.0
47.0
2.5
4.0
5.0
10.0
15.0
33.0
Max steady
stade current
Iss max 25°C (A)
2.9
2.3
2.1
1.8
1.3
3.4
2.7
2.5
2.1
1.5
4.5
3.6
3.3
2.6
2.5
2.0
1.9
1.7
1.4
1.1
1.0
5.2
4.1
3.8
3.0
2.8
2.3
2.1
2.0
1.6
1.3
1.2
5.7
4.2
3.7
3.6
3.3
2.8
2.3
2.2
2.0
1.9
8.9
8.3
6.6
6.1
5.5
4.9
4.7
4.3
4.2
3.7
3.5
3.0
3.1
2.8
2.5
2.3
2.3
7.8
6.4
5.9
4.3
4.0
3.1
Resistance
at max current
Riss max (Ω)
0.20
0.30
0.37
0.50
0.97
0.20
0.30
0.37
0.50
0.97
0.10
0.16
0.19
0.30
0.34
0.50
0.59
0.69
1.07
1.60
1.90
0.10
0.16
0.19
0.30
0.34
0.50
0.59
0.69
1.07
1.60
1.90
0.10
0.19
0.24
0.25
0.30
0.41
0.61
0.70
0.80
0.95
0.05
0.06
0.09
0.11
0.13
0.17
0.19
0.22
0.24
0.30
0.33
0.44
0.43
0.53
0.66
0.80
0.74
0.08
0.13
0.15
0.28
0.32
0.52
NTC Inrush Current Limiters
Thermistors
Application Guide
1 – HOW TO DETERMINE THE
MAXIMUM STEADY STATE
CURRENT OF NF THERMISTORS?
• If the ambient temperature is 25°C:
the current is given in table page 30.
• If the ambient temperature is different from 25°C:
the current at 25°C must be derated as specified in the
graph below.
Example: maximum steady state current of
NF13AA0100M at 60°C ambient:
ISSmax25 x 0.9 = 3.0 A.
Derating of maximum steady state current with
ambient temperature
1.00
3 – HOW TO CALCULATE THE
WORKING POINT OF NF
THERMISTOR AT A DIFFERENT
AMBIENT TEMPERATURE THAN
25°C?
Example: NF13AA0100M
ISS = 3 A, Tambient = TA = 60°C
• RT ISS2 = (T-TA) and thus
T=
RT ISS2
+ TA
• As RT depends on T, this equation is quite complex to be
solved by an algebraic way. The quickest manner to solve
it is to operate by iterations:
for NF13, = 16 mW/K (see page 29)
Iss max (T) /Iss max (25°C) RATIO
therefore, the equation becomes:
T = 562.5 RT + 60
0.80
Not recommended for permanent use
from the RT curve page 33 we find RT starting from T:
0.60
T (°C)
0.40
0.20
RT (Ω)
➾
562.5 RT + 60 (°C)
185
0.28
217
190
0.26
206
195
0.24
195
200
0.22
184
0.00
-40
-20
0
20
40
60
80
100 120 140 160 180 200 220
AMBIENT TEMPERATURE (°C)
2 – HOW TO CALCULATE THE
WORKING TEMPERATURE OF
NF THERMISTOR?
The working temperature of this NF thermistor is about
195°C when operating under ISS = 3 A and TA = 60°C (this
temperature is the one for which we have T = 562.5 RT +
60).
Important: A discrepancy may exist between practice and
theory due to the tolerance of the thermistor
(±20% usually).
Example: NF08AA0330M
Tambient = 25°C
ISS = 0.2 A,
• From the graph V (I) page 32, we find VSS = 2.2 V therefore, RSS = 11 Ω
• From the graph R(T), page 32, at R = 11 Ω, we find
T ± 65°C
31
NTC Inrush Current Limiters
Thermistors
Voltage-Current and Resistance-Temperature Characteristics
TYPICAL VOLTAGE/CURRENT
CHARACTERISTICS FOR TYPE NF08
10.000
1.6 W for the
suffix HB
2.2 W
33Ω
15Ω
10Ω
8Ω
5Ω
Voltage (V)
1.000
0.100
0.010
0.010
0.100
10.000
1.000
Current (A)
TYPICAL RESISTANCE/TEMPERATURE
CHARACTERISTICS FOR TYPE NF08
1000.00
Resistance (Ohm)
100.00
10.00
1.00
33Ω
15Ω
10Ω
8Ω
5Ω
0.10
-50
0
50
100
Temperature ( °C)
32
150
200
250
NTC Inrush Current Limiters
Thermistors
Voltage-Current and Resistance-Temperature Characteristics
TYPICAL VOLTAGE/CURRENT
CHARACTERISTICS FOR TYPE NF10
TYPICAL VOLTAGE/CURRENT
CHARACTERISTICS FOR TYPE NF13
10.000
10.000
2.6 W
120Ω
80Ω
50Ω
25Ω
20Ω
16Ω
10Ω
8Ω
5Ω
4Ω
2.5Ω
Voltage (V)
1.000
3.2 W
60Ω
40Ω
33Ω
22Ω
15Ω
10Ω
8Ω
7Ω
5Ω
2.5Ω
1.000
Voltage (V)
2.0 W for the
suffix HB
0.100
0.100
0.010
0.010
0.100
0.010
0.010
10.000
1.000
0.100
Current (A)
TYPICAL RESISTANCE/TEMPERATURE
CHARACTERISTICS FOR TYPE NF10
1000.00
100.00
100.00
10.00
120Ω
80Ω
50Ω
25Ω
20Ω
16Ω
10Ω
8Ω
5Ω
4Ω
2.5Ω
1.00
0.10
0.01
50
100
Temperature (°C)
150
200
250
Resistance (Ohm)
1000.00
Resistance (Ohm)
10000.00
0
10.000
TYPICAL RESISTANCE/TEMPERATURE
CHARACTERISTICS FOR TYPE NF13
10000.00
-50
1.000
Current (A)
10.00
60Ω
40Ω
33Ω
22Ω
15Ω
10Ω
8Ω
7Ω
5Ω
2.5Ω
1.00
0.10
0.01
-50
0
50
100
150
200
250
Temperature (°C)
33
NTC Inrush Current Limiters
Thermistors
Voltage-Current and Resistance-Temperature Characteristics
TYPICAL VOLTAGE/CURRENT
CHARACTERISTICS FOR TYPE NF15
TYPICAL VOLTAGE/CURRENT
CHARACTERISTICS FOR TYPE NF20
10.000
10.000
4.1 W
Voltage (V)
1.000
0.100
0.010
0.010
0.100
1.000
5.0 W
33
15
10
5
4
2.5
1.000
Voltage (V)
47Ω
40Ω
33Ω
25Ω
20Ω
16Ω
12Ω
10Ω
8Ω
7Ω
6Ω
5Ω
4Ω
3Ω
2.5Ω
1.5Ω
1.3Ω
0.100
0.010
0.0100.1001.000
10.000
10.000100.000
Current (A)
Current (A)
TYPICAL RESISTANCE/TEMPERATURE
CHARACTERISTICS FOR TYPE NF15
TYPICAL RESISTANCE/TEMPERATURE
CHARACTERISTICS FOR TYPE NF20
1000.00
10000.00
1000.00
100.00
47Ω
40Ω
33Ω
25Ω
20Ω
16Ω
12Ω
10Ω
8Ω
7Ω
6Ω
5Ω
4Ω
3Ω
2.5Ω
1.5Ω
1.3Ω
10.00
1.00
0.10
0.01
-50
0
50
100
Temperature (°C)
34
150
200
250
Resistance (Ohm)
Resistance (Ohm)
100.00
10.00
1.00
33
15
10
5
4
2.5
0.10
0.01
-500100200
50150
Temperature ( C)
250
Packaging for Automatic Insertion
NTC Disc Thermistors / NF Series
PACKAGING AND KINK SUFFIXES
The following types can be ordered on tape either in
AMMOPACK (fan folder) or on REEL in accordance with IEC
286-2.
Types
Leads
NF08
Internal Kink
Straight
D
“Y” Kink
e
3mm max.
H
Notes
H1
H1
DIMENSIONS:
millimeters (inches)
I
LS
0.6 (.024)
d
Packaging
Ho = 16
Ho = 19.5
5.08 (0.20)
AMMOPACK
DA
DC
Types
Leads
REEL
DB
DD
AMMOPACK
DQ
DS
NF08 / 10 / 13
Internal Kink
Straight
D
REEL
DR
DT
AMMOPACK
D7
D8
REEL
D5
D6
“Y” Kink
e
3mm max.
H
DIMENSIONS:
H1
Notes
H1
millimeters (inches)
I
LS
0.8 (0.31)
d
Packaging
Ho = 16
Ho = 19.5
7.62 (0.30)
AMMOPACK
EA
EB
REEL
EN
ED
AMMOPACK
EC
REEL
EF
AMMOPACK
EQ
REEL
ER
PACKAGING QUANTITIES
Type
NF08* (5.08)
NF08 (7.62)
NF10* (5.08)
NF10 (7.62)
NF13 (7.62)
NF15 (7.62)
NF20 (7.62)
AMMOPACK
1000
750
REEL
1000
750
BULK
750
750
450
750
–
–
750
–
–
400
250
150
450
35