NTC Thermistor
Temperature Sensing/Compensation
Ф3 mm Lead Type
F
EATURES
RoHS compliant
Halogen-Free (HF) series are available
Radial lead resin coated
Operating temperature range: -40°C~+125°C
Wide resistance range
Cost effective
Agency recognition: UL
NTS3 Series
RoHS
MERITEK
E223037
P
ART
N
UMBERING
S
YSTEM
NTS
Meritek NTC Thermistor Product Series
Body Size: 3 = Ø3mm
Definition of B Value
Code
Type
Code
Value
Code
Value
A
B
25/85
901
900Ω
F
±1%
374
3740
E
±0.75%
B
B
25/50
203
20KΩ
G
±2%
474
470KΩ
J
±5%
395
3950
G
±2%
H
±3%
P
Straight lead,
Pitch 5mm, Ф0.5mm
L
Wider Kink,
Pitch 2.54mm, Ф0.5mm
Q
Wider Kink,
Pitch 5mm, Ф0.5mm
F
Outer Kink,
Pitch 2.54mm, Ф0.5mm
K
±10%
39H
3975
520
5200
3
A
901
F
39D
F
E
Zero Power Resistance at 25°C (R
25
)
Tolerance of R
25
H
±3%
39D
3935
F
±1%
B Value
Code
Value
Code
Value
Code
Type
Tolerance of B value
Lead Wire Type
E
Straight lead,
Pitch 2.54mm, Ф0.5mm
D
IMENSIONS
Lead
Type
P (±1)
D
MAX
T
MAX
H
MAX
H1
MAX
I
MAX
L
d
Straight
Lead
2.54
5
4
3
5
-
3
6.5
5
7
-
3
Wider
Kink
2.54
5
4
3
6
-
-
4
3
10
-
-
Outer
Kink
2.54
4
3
5
5.5
3
24.5~34.5
30~40
0.5±0.02
(Unit: mm)
Rev. 7
NTC Thermistor
Temperature Sensing/Compensation
Ф3 mm Lead Type
E
LECTRICAL
C
HARACTERISTICS
Part No.
Zero Power
Resistance
at 25°C
R
25
(KΩ)
NTS3A901□39D*
NTS3A102□39D*
NTS3A152□39D*
NTS3A202□39H*
NTS3A222□39H*
NTS3A272□39H*
NTS3A302□39H*
NTS3A332□39H*
NTS3A472□39H*
NTS3A482□395*
NTS3A482□39H*
NTS3A502□39H*
NTS3A682□39H*
NTS3A103□34D*
NTS3A103□374*
NTS3A103□39H*
NTS3A123□374*
NTS3A153□374*
NTS3A203□374*
NTS3A203□426*
NTS3A223□374*
NTS3A333□409*
NTS3A473□409*
NTS3A503□39H*
NTS3A503□406*
NTS3A683□419*
NTS3A104□419*
NTS3A104□436*
NTS3A154□437*
NTS3A204□385*
NTS3A224□437*
NTS3A334□457*
NTS3A474□457*
NTS3A474□520*
NTS3B202□350*
NTS3B473□39D*
NTS3B503□440*
NTS3B434□507*
NTS3B474□520*
0.9
1
1.5
2
2.2
2.7
3
3.3
4.7
4.8
4.8
5
6.8
10
10
10
12
15
20
20
22
33
47
50
50
68
100
100
150
200
220
330
470
470
2
47
50
430
25/50
±1%
±2%
±3%
±5%
25/85
Tolerance
of
R25
(±%)
B
Value
(K)
3935
3935
3935
3975
3975
3975
3975
3975
3975
3950
3975
3975
3975
3435
3740
3975
3740
3740
3740
4260
3740
4090
4090
3975
4060
4190
4190
4360
4370
3850
4370
4570
4570
5200
3500
3935
4400
5070
±3%
±2%/±3%
NTS3 Series
RoHS
MERITEK
Tolerance
of
B value
(±%)
±2%
±3%
Max. Power
Dissipation
at 25°C
P
MAX
(mW)
Dissipation
Factor
δ(mW/°C)
Thermal
Time
Constant
τ (Sec.)
Operating
Temperature
Range
T
L
~T
U
(°C)
±1%
±2%
±3%
±2%
±3%
150
≥2.5
≤18
-40~+125
±1%
±2%
±3%
±2%
±3%
±1%/±2%/±3%
±2%
±3%
±3%
470
5200
Note 1:
□
= Tolerance of R
25
* = Tolerance of B value
Note 2: Special specifications are available upon request.
Rev. 7
NTC Thermistor
Temperature Sensing/Compensation
Ф3 mm Lead Type
RoHS
NTS3 Series
MERITEK
M
AX
P
OWER
D
ISSIPATION
D
ERATING
C
URVE
R-T CHARACTERISTIC CURVE
Rev. 7
NTC Thermistor
Temperature Sensing/Compensation
Ф3 mm Lead Type
RoHS
NTS3 Series
MERITEK
R-T CHARACTERISTIC CURVE (Cont’d)
S
OLDERING
R
ECOMMENDATION
Wave Soldering Profile
Recommended Reworking Conditions with Soldering Iron
Item
Temperature of Soldering Iron-tip
Soldering Time
Distance from Thermistor
Conditions
360°C MAX
3 sec. MAX
2 mm MIN
Rev. 7
NTC Thermistor
Temperature Sensing/Compensation
Ф3 mm Lead Type
R
ELIABILITY
Item
Standard
NTS3 Series
RoHS
MERITEK
Test conditions / Methods
Gradually apply the specified force and keep the unit fixed for
10±1 sec.
Specifications
Tensile Strength of
Terminations
IEC 60068-2-21
No Visible Damage
Hold specimen and apply the force specified below to each lead.
Bend the specimen to 90°, and then return to the original
position. Repeat the procedure in the opposite direction.
Bending Strength
of Terminations
IEC 60068-2-21
No Visible Damage
Solderability
Resistance to
Soldering Heat
High Temperature
Storage
Damp Heat,
Steady State
IEC 60068-2-20
IEC 60068-2-20
IEC 60068-2-2
IEC 60068-2-3
245 ± 5°C, 3 ± 0.3 sec.
260 ± 5°C, 10 ± 1 sec.
125 ± 5°C, 1000 ± 24 hrs
40 ± 2°C, 90~95% RH, 1000 ± 24 hrs
The conditions shown below shall be repeated 5 cycles.
Step
Temperature (°C)
Duration (minutes)
1
-40 ± 5
30 ± 3
2
Room Temperature
5±3
3
125 ± 5
30 ± 3
4
Room Temperature
5±3
25 ± 5°C, P
MAX
, 1000 ± 24 hrs
At least 95% of
terminal electrode is
covered by new solder
No Visible Damage
|ΔR
25
/R
25
| ≤ 3%
No Visible Damage
|ΔR
25
/R
25
| ≤ 5%
No Visible Damage
|ΔR
25
/R
25
| ≤ 3%
Rapid Change of
Temperature
IEC 60068-2-14
No Visible Damage
|ΔR
25
/R
25
| ≤ 3%
Max. Power
Dissipation
IEC 60539-1
No Visible Damage
|ΔR
25
/R
25
| ≤ 5%
Rev. 7
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