NTC Thermistor：
：：
：TTF Type
Insulation Film Type for Temperature Sensing/Compensation
THINKING ELECTRONIC INDUSTRIAL Co., LTD.
1
www.thinking.com.tw
2008.05
Features
1. RoHS compliant
2. Radial leaded insulation film coated
3. -40 ~ +100℃ operating temperature range
4. Agency recognition: UL /cUL
Recommended Applications
1. Home appliances (air conditioner, refrigerator,
electric fan, electric cooker, washing machine,
microwave oven, drinking machine, CTV, radio.)
2. Computers
3. Battery pack
Part Number Code
1 2 3 4 5 6 7 8 9 10
11
12
13
14
15
16
Structure and Dimensions
Product Type
TTF
Thinking
NTC thermistor
TTF type
Size
3
φ 3mm
Zero Power
Resistance
at 25℃ (R
25
)
102
1KΩ
103
10KΩ
473
47KΩ
Tolerance of
R
25
F
±1%
G
±2%
H
±3%
J
±5%
K
±10%
B Value
First
Two Digits
30
31
32
：
︰
40
41
︰
30
31
32
：
︰
40
41
︰
B Value
Last
Two Digits
0
A
1
B
2
︰
H
8
J
9
K
00
05
10
15
20
︰
75
80
85
90
95
Tolerance of
B Value
1 ±1%
2 ±2%
3 ±3%
Optional Suffix
Y RoHS
compliant
Appearance
A
L:25mm solder part 5mm
B
L:50mm solder part 5mm
Definition
of
B Value
A B
25/85
B B
25/50
3.6 ± 0.5
2 ± 1
5 ± 1 25 ± 1
Φ0.5
0.5 ± 0.035
0.15 ± 0.02
1.8 ± 0.1
0.6(max.)
Slipped film:
1.0max
(Unit:mm)
0.17 ± 0.02
NTC
Thermistor
NTC Thermistor：
：：
：TTF Type
Insulation Film Type for Temperature Sensing/Compensation
THINKING ELECTRONIC INDUSTRIAL Co., LTD.
2
www.thinking.com.tw
2008.05
Electrical Characteristics
Safety
Approvals
Zero Power
Resistance
at 25°C
Tolerance
of
R
25
B
25/85
Value Tolerance
of
B value
Max.
Power
Rating
at 25°C
Dissipation
Factor Thermal
Time
Constant
Operating
Temperature
Range
Part No.
R
25
(KΩ) ( ±%) (K) (±%) P
max
(mW)
δ(mW/°C)
τ(Sec.)
T
L
~T
U
(°C)
UL
cUL
TTF3A502□34D*
5 √
√
TTF3A103□34D*
10 √
√
TTF3A203□34D*
20 √
√
TTF3A303□34D*
30 √
√
TTF3A473□34D*
47
3435
√
√
TTF3A473□39H*
47 3975 √
√
TTF3A473□419*
47 4190 √
√
TTF3A503□34D*
50 √
√
TTF3A104□34D*
100 3435 √
√
TTF3A104□39H*
100 3975 √
√
TTF3A224□405*
220
1、2、3、
5、10
4050
1、2、3 3.5 Approx.
0.7 Approx.
5 -40 ~ +100
√
√
Note 1:□ = Tolerance of R
25
Note 2: * = Tolerance of B value
Power Derating Curve
100
0 25 T
U
0
T
L
Ambient temperature ( )℃
℃℃
℃
Max power rating (%)
T
U
：Maximum operating temperature (℃)
T
L
：Minimum operating temperature (℃)
For example：Ambient temperature(Ta)=55℃
Maximum operating temperature(T
U
)＝100℃
P
Ta
=(T
U
-Ta)/(T
U
-25)×Pmax＝60% Pmax
NTC Thermistor：
：：
：TTF Type
Insulation Film Type for Temperature Sensing/Compensation
THINKING ELECTRONIC INDUSTRIAL Co., LTD.
3
www.thinking.com.tw
2008.05
0.1
1
10
100
1000
10000
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100
R-T Characteristic Curves (representative)
Soldering Recommendation
Wave Soldering Profile
Resistance(KΩ
Ω
Ω
Ω)
Temperature (℃
℃℃
℃)
TTF3A502□34D*~ TTF3A224□405*
TTF3A224□405*
TTF3A104□34D*
TTF3A104□39H*
TTF3A473□34D*
TTF3A473□39H*
TTF3A303□34D
TTF3A203□34D
TTF3A103□34D*
TTF3A502□34D*
Temperature
130±20
℃
260℃ Max
Tamb
Cooling
Time
Soldering Preheating
30~90 sec. ＜1 sec. ＜10 sec.
Note 1
Note 2 Note 3
Note 1: (1~3℃)/sec
Note 2: Approx. 200℃/sec
Note 3: 5℃/sec. (Max)
NTC Thermistor：
：：
：TTF Type
Insulation Film Type for Temperature Sensing/Compensation
THINKING ELECTRONIC INDUSTRIAL Co., LTD.
4
www.thinking.com.tw
2008.05
Recommended Reworking Conditions With Soldering Iron
Item Conditions
Temperature of Soldering Iron-tip 360℃ (max.)
Soldering Time 3 sec (max.)
Distance from Coating Can't touch film bottom
Reliability
Item Standard Test conditions / Methods Specifications
Tensile
Strength of
Terminals IEC60068-2-21
Gradually applying the force specified and keeping t
he unit fixed for
10±1 sec..
Terminal cross-sectional area
Force
(mm2) (Kg)
0.07<S≦0.2 0.5
No visible damage
Bending
Strength of
Terminals IEC60068-2-21
Hold specimen and apply the force specified below to each lead. Bend
the specimen to 90°, th
en return to the original position. Repeat the
procedure in the opposite direction.
Terminal cross-sectional area
Force
(mm2) (Kg)
0.07<S≦0.2 0.25
No visible damage
Solderability IEC60068-2-20
235 ± 5℃ , 2 ± 0.5 sec At least 95% of terminal
electrode is covered by
new solder
Resistance to
Soldering Heat IEC60068-2-20
260 ± 5℃ , 10 ± 1 sec No visible damage
∣△R
25
/R
25
∣≦ 3 %
High
Temperature
Storage IE600C68-2-2 100 ± 5℃ , 1000 ± 24 hrs No visible damage
∣△R
25
/R
25
∣≦ 5 %
Damp Heat,
Steady State IEC60068-2-3 40 ± 2℃ , 90~95% RH , 1000 ± 24 hrs No visible damage
∣△R
25
/R
25
∣≦ 3 %
Rapid Change of
Temperature IEC60068-2-14
The conditions shown below shall be repeated 5 cycles
Step Temperature (℃) Period (minutes)
1 -40 ± 5 30 ± 3
2 Room temperature 5 ± 3
3 100 ± 5 30 ± 3
4 Room temperature 5 ± 3
No visible damage
∣△R
25
/R
25
∣≦ 3 %
Life Test IEC 60539-1 25 ± 5℃, Pmax. , 1000 ± 24 hrs No visible damage
∣△R
25
/R
25
∣≦ 5 %
Insulation Test MIL-STD-202F-
Method 302 500 V
DC
1 min No visible damage
≧100 MΩ
Hi-pot Test MIL-STD-202F-
Method 301 1000 V
AC
10mA 1 min No visible damage
NTC Thermistor：
：：
：TTF Type
Insulation Film Type for Temperature Sensing/Compensation
THINKING ELECTRONIC INDUSTRIAL Co., LTD.
5
www.thinking.com.tw
2008.05
Packaging
Bulk Packing: 500 pcs/ bag
Storage Conditions of Products
Storage Conditions：
1.Storage Temperature ： -10℃~+40℃
2.Relative Humidity： ≦75%RH
3. Keep away from corrosive atmosphere and sunlight.
Period of Storage ：1 year
