NTC Thermistor：TTC3 Series
Ф3 mm Lead Type for Temperature Sensing/Compensation
THINKING ELECTRONIC INDUSTRIAL CO., LTD. 39 www.thinking.com.tw 2012.08
All specifications are subject to change without notice.
Features
1. RoHS compliant
2. Halogen-Free(HF) series are available
3. Body size: Ф3mm
4. Radial lead resin coated
5. Operating temperature range: -40℃~+125℃
6. Wide resistance range
7. Cost effective
8. Agency recognition: UL / TUV / CQC
Recommended Applications
1. Home appliances
2. Computers
3. Digital meters
4. Switch mode power supplies
5. Adapters
Part Number Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Product Type
TTC
THINKING
NTC Thermistor
TTC Series
Body Size
3 Ф3mm
Definition
of
B Value
A B25/85
B B25/50
Zero Power
Resistance
at 25℃ (R25)
102 1KΩ
103 10KΩ
473 47KΩ
Tolerance
of R25
F±1%
G±2%
H±3%
J±5%
K ±10%
Tolerance of
B Value
1 ±1%
2 ±2%
3 ±3%
Optional Suffix
Y RoHS
Compliant
A RoHS & HF
Compliant
Appearance
E Straight lead, pitch 2.54mm, Ф0.5mm
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
B Value
374 3740
39D 3935
395 3950
39H 3975
520 5200
NTC Thermistor：TTC3 Series
Ф3 mm Lead Type for Temperature Sensing/Compensation
THINKING ELECTRONIC INDUSTRIAL CO., LTD. 40 www.thinking.com.tw 2012.08
All specifications are subject to change without notice.
Structure and Dimensions
Straight Lead Wider Kink Outer Kink
(Unit: mm)
Lead Type P Dmax. Tmax. Hmax. H1max. Imax. L d
2.54±1 4 3 5 -- 3
Straight Lead
5±1 6.5 5 7 -- 3
2.54±1 4 3 6 -- --
Wider Kink
5±1 4 3 10 -- --
30~40
Outer Kink 2.54±1 4 3 5 5.5 3 24.5~34.5
0.5±0.02
NTC Thermistor：TTC3 Series
Ф3 mm Lead Type for Temperature Sensing/Compensation
THINKING ELECTRONIC INDUSTRIAL CO., LTD. 41 www.thinking.com.tw 2012.08
All specifications are subject to change without notice.
Electrical Characteristics
Safety
Approvals
Zero Power
Resistance
at 25°C
Tolerance
of
R25
B
Value
Tolerance
of
B value
Max. Power
Dissipation
at 25℃
Dissipation
Factor
Thermal
Time
Constant
Operating
Temperature
Range
Part No.
R25 (KΩ) ( ±%) (K) (±%) Pmax(mW) δ(mW/°C) τ(Sec.) TL~TU(°C)
UL
cUL TUV CQC
TTC3A901□39D* 0.9 3935
TTC3A102□39D* 1 3935
TTC3A152□39D* 1.5 3935
2、3
TTC3A202□39H* 2 3975
TTC3A222□39H* 2.2 3975
TTC3A272□39H* 2.7 3975
TTC3A302□39H* 3 3975
TTC3A332□39H* 3.3 3975
TTC3A472□39H* 4.7 3975
TTC3A482□395* 4.8 3950
TTC3A482□39H* 4.8 3975
TTC3A502□39H* 5 3975
TTC3A682□39H* 6.8 3975
TTC3A103□34D* 10 3435
TTC3A103□374* 10 3740
TTC3A103□39H* 10 3975
TTC3A123□374* 12 3740
TTC3A153□374* 15 3740
1、2、3
TTC3A203□374* 20 3740
TTC3A203□426* 20 4260
TTC3A223□374* 22 3740
2、3
TTC3A333□409* 33 4090
TTC3A473□409* 47 4090
TTC3A503□39H* 50 3975
TTC3A503□406* 50 4060
1、2、3
TTC3A683□419* 68 4190
TTC3A104□419* 100 4190
TTC3A104□436* 100 4360
TTC3A154□437* 150 4370
TTC3A204□385* 200 3850
TTC3A224□437* 220 4370
TTC3A334□457* 330 4570
TTC3A474□457* 470 4570
2、3
TTC3A474□520* 470
25/85
5200 3
TTC3B202□350* 2 3500 2、3
TTC3B473□39D* 47 3935 1、2、3
TTC3B503□440* 50 4400
TTC3B434□507* 430 5070 2、3
TTC3B474□520* 470
1、2、3、
5
25/50
5200 3
150 ≧2.5 ≦18 -40~+125
Note 1: □ = Tolerance of R25
* = Tolerance of B value
Note 2: UL File No: E138827, TUV File No: R50050155
CQC File No: CQC04001011945, CQC04001011966
Note 3: Special specifications are available upon request.
NTC Thermistor：TTC3 Series
Ф3 mm Lead Type for Temperature Sensing/Compensation
THINKING ELECTRONIC INDUSTRIAL CO., LTD. 42 www.thinking.com.tw 2012.08
All specifications are subject to change without notice.
0.01
0.1
1
10
100
1000
10000
100000
-40-30-20-100 102030405060708090100110120130
0.01
0.1
1
10
100
1000
10000
100000
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 130
1:TTC3A474□520*
2:TTC3A224□437*
3:TTC3A104□436*
4:TTC3B503□440*
5:TTC3A503□406*
6:TTC3A333□409*
7:TTC3A203□374*
8:TTC3A103□39H*
9:TTC3A682□39H*
10:TTC3A482□395*
11:TTC3A302□39H*
12:TTC3A202□39H*
13:TTC3A901
□
39D*
Max. Power Dissipation Derating Curve
R-T Characteristic Curves
100%
0 25 TU
0
TL
Ambient temperature ( )℃
TU : Maximum operating temperature (℃)
TL : Minimum operating temperature (℃)
For example:
Ambient temperature(Ta) = 55℃
Maximum operating temperature(TU) = 125℃
PTa = (TU-Ta)/(TU-25)×Pmax = 70% Pmax
1:TTC3B434□507*
2:TTC3A334□457*
3:TTC3A154□437*
4:TTC3A683□419*
5:TTC3A473□409*
6:TTC3A203□426*
7:TTC3A123□374*
8:TTC3A103□34D*
9:TTC3A482□39H*
10:TTC3A332□39H*
11: TTC3A222□39H*
12:TTC3B202□350*
13:TTC3A102□39D*
Resistance
(
KΩ
)
Resistance
(
KΩ
)
TTC3A901□39D*~ TTC3A474□520* TTC3A102□39D*~ TTC3B434□507*
Temperature ( )℃
Temperature ( )℃
1
2
3
4
5
6
7
8
9
10
11
12
13
1
2
3
4
5
6
7
8
9
10
11
12
13
NTC Thermistor：TTC3 Series
Ф3 mm Lead Type for Temperature Sensing/Compensation
THINKING ELECTRONIC INDUSTRIAL CO., LTD. 43 www.thinking.com.tw 2012.08
All specifications are subject to change without notice.
0.01
0.1
1
10
100
1000
10000
100000
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 130
Soldering Recommendation
Wave Soldering Profile
Recommended Reworking Conditions with Soldering Iron
Item Conditions
Temperature of Soldering Iron-tip 360℃ (max.)
Soldering Time 3 sec. (max.)
Distance from Thermistor 2 mm (min.)
Tem
p
erature
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.)
Resistance
(
KΩ
)
Temperature ( )℃
1:TTC3B474□520*
2:TTC3A474□457*
3:TTC3A204□385*
4:TTC3A104□419*
5:TTC3A503□39H*
6:TTC3B473□39D*
7:TTC3A223□374*
8:TTC3A153□374*
9:TTC3A103□374*
10:TTC3A502□39H*
11:TTC3A472□39H*
12:TTC3A272□39H*
13:TTC3A152□39D*
TTC3A152□39D*~ TTC3B474□520*
1
2
3
4
5
6
7
8
9
10
11
12
13
NTC Thermistor：TTC3 Series
Ф3 mm Lead Type for Temperature Sensing/Compensation
THINKING ELECTRONIC INDUSTRIAL CO., LTD. 44 www.thinking.com.tw 2012.08
All specifications are subject to change without notice.
Reliability
Item Standard Test conditions / Methods Specifications
Tensile
Strength of
Terminations
IEC 60068-2-21
Gradually apply the specified force and keep the unit fixed for 10±1 sec.
Terminal diameter Force
(mm) (Kg)
0.3<d 0.5 ≦0.5
No visible damage
Bending
Strength of
Terminations
IEC 60068-2-21
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.
Terminal diameter Force
(mm) (Kg)
0.3<d 0.5≦ 0.25
No visible damage
Solderability IEC 60068-2-20 245±3 , ℃3±0.3 sec.
At least 95% of
terminal electrode
is covered by
new solder
Resistance to
Soldering
Heat
IEC 60068-2-20 260 ± 3 , 10 ± 1 sec℃. No visible damage
R∣△ 25/R25 3 %∣≦
High
Temperature
Storage
IEC 60068-2-2 125 ± 5 ℃, 1000 ± 24 hrs No visible damage
R∣△ 25/R25 5 %∣≦
Damp Heat,
Steady State IEC 60068-2-3 40 ± 2 , 90~95% RH , 1000 ± 24℃ hrs No visible damage
R∣△ 25/R25 3 %∣≦
Rapid Change
of
Temperature
IEC 60068-2-14
The conditions shown below shall be repeated 5 cycles
Step Temperature ( )℃ Period (minutes)
1 -40 ± 5 30 ± 3
2 Room temperature 5 ± 3
3 125 ± 5 30 ± 3
4 Room temperature 5 ± 3
No visible damage
∣△R25/R25∣ 3 %≦
Max. Power
Dissipation IEC 60539-1 25 ± 5 ,℃ Pmax. , 1000 ± 24 hrs No visible damage
R∣△ 25/R25 5 %∣≦
NTC Thermistor：TTC3 Series
Ф3 mm Lead Type for Temperature Sensing/Compensation
THINKING ELECTRONIC INDUSTRIAL CO., LTD. 45 www.thinking.com.tw 2012.08
All specifications are subject to change without notice.
Packaging
Taping Specification
Straight Lead
(Unit:mm)
P0 F P P1 H H1 d W0 W1 W2 W △P △h L1 D0 T
Taping
Dimension ±0.3 ±1 ±1 ±0.7 +2/-0 Max. ±0.02 ±1 +0.75
/-0.5 Max. +1/
-0.5 Max. Max. Max. ±0.2 ±0.2
12.7 2.54 12.7 5.08 18 25 0.5 12 9 3 18 1 2 0.5 4 0.6
P0=12.7 12.7 5 12.7 3.85 18 25 0.5 12 9 3 18 1 2 0.5 4 0.6
15 2.54 15 6.23 18 25 0.5 12 9 3 18 1 2 0.5 4 0.6
P0=15.0 15 5 15 5.00 18
25 0.5 12 9 3 18 1 2 0.5 4 0.6
Wider Kink
(Unit:mm)
P0 F P P1 H0 H1 d W0 W1 W2 W △P △h L1 D0 T
Taping
Dimension ±0.3 ±1 ±1 ±0.7 ±0.5 Max. ±0.02 ±1 +0.75
/-0.5 Max. +1/
-0.5 Max. Max. Max. ±0.2 ±0.2
12.7 2.54 12.7 5.08 16 26 0.5 12 9 3 18 1 2 0.5 4 0.6
P0=12.7 12.7 5 12.7 3.85 16 26 0.5 12 9 3 18 1 2 0.5 4 0.6
W
L1F
HH1
D0
P1
P
P0
W1
W2
W0
∆h
T
∆P∆P∆h
T
∆h
∆P∆P∆h
NTC Thermistor：TTC3 Series
Ф3 mm Lead Type for Temperature Sensing/Compensation
THINKING ELECTRONIC INDUSTRIAL CO., LTD. 46 www.thinking.com.tw 2012.08
All specifications are subject to change without notice.
Outer Kink
(Unit:mm)
P0 F P P1 H0 H1 d W0 W1 W2 W △P △h L1 D0 T
Taping
Dimension ±0.3 ±1 ±1 ±0.7 ±0.5 Max. ±0.02 ±1 +0.75
/-0.5 Max. +1/
-0.5 Max. Max. Max. ±0.2 ±0.2
P0=12.7 12.7 2.54 12.7 5.08 16 26 0.5 12 9 3 18 1 2 0.5 4 0.6
Quantity
Bulk Packing
Reel Packing
Ammo Packing
Warehouse 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
Series Quantity (pcs/bag)
TTC3 500
Series Quantity (pcs/reel)
TTC3 2,500
Series Quantity (pcs/box)
TTC3 2,500
(Unit: mm)
46±1
31±1
340±10
n n n n n n n n n n n
50±5
275±5
348±5
