TTF3A203G34D1BY - Thinking Electronic Industrial Co., Ltd.

NTC Thermistor：

：：

：TTF Series

Insulation Film Type for Temperature Sensing/Compensation

THINKING ELECTRONIC INDUSTRIAL CO., LTD.

52

www.thinking.com.tw

2013.08

All specifications are subject to change without notice.



Features

1. RoHS compliant

2. Halogen-Free (HF) series are available

3. Radial leaded insulation film coated

4. Operating temperature range: -40 ~+100

5. Agency recognition: UL / cUL

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Recommended Applications

1. Home appliances

2. Computers

3. Battery packs

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Part Number Code

1 2 3 4 5 6 7 8 9 10

11

12

13

14

15

16

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Structure and Dimensions

Product Type

TTF

THINKING

NTC Thermistor

TTF Series

Size

3

W:3.6mm

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%

Tolerance of

B Value

1 ±1%

2 ±2%

3 ±3%

Optional Suffix

Y RoHS

Compliant

H RoHS & HF

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

B Value

338

3380

34D

3435

395

3950

39H

3975

405

4050

NTC Thermistor：

：：

：TTF Series

Insulation Film Type for Temperature Sensing/Compensation

THINKING ELECTRONIC INDUSTRIAL CO., LTD.

53

www.thinking.com.tw

2013.08

All specifications are subject to change without notice.



Electrical Characteristics

Safety

Approvals

Zero Power

Resistance

at 25°C

Tolerance

of

R

25

B

Value Tolerance

of

B value

Max.

Power

Dissipation

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 3435 2, 3 √

√

TTF3A103□34D*

10 3435 √

√

TTF3A203□34D*

20 3435 √

√

TTF3A223□34D*

22 3435 √

√

TTF3A303□39H*

30 3975

1, 2, 3

√

TTF3A104□34D*

100

1, 2, 3,

5 25/85

3435 2,3

3.5 Approx.

0.7 Approx.

5 -40 ~ +100

√

Note 1: □ = Tolerance of R

25

*

= Tolerance of B value

Note 2: UL/

cUL

File No: E138827

Note 3: Special specifications are available upon request.

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Max. Power Dissipation Derating Curve

100%

0 25 T

U

0

T

L

Ambient temperature ( )





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 Series

Insulation Film Type for Temperature Sensing/Compensation

THINKING ELECTRONIC INDUSTRIAL CO., LTD.

54

www.thinking.com.tw

2013.08

All specifications are subject to change without notice.

0.1

1

10

100

1000

10000

-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100

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R-T Characteristic Curves

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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 Coating Do not touch film bottom

Resistance(KΩ

Ω

Ω)

Temperature (℃

℃℃

℃)

TTF3A502□34D*~ TTF3A104□34D*

1:TTF3A104□34D*

2:TTF3A303□39H*

3:TTF3A223□34D*

4:TTF3A203□34D*

5:TTF3A103□34D*

6: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.)

1

2

3

4

5

6

NTC Thermistor：

：：

：TTF Series

Insulation Film Type for Temperature Sensing/Compensation

THINKING ELECTRONIC INDUSTRIAL CO., LTD.

55

www.thinking.com.tw

2013.08

All specifications are subject to change without notice.



Reliability

Item Standard Test conditions / Methods Specifications

Tensile Strength

of Terminals IEC 60068-2-21

Gradually apply the specified force and keep the unit fixed for

10±1 sec.

Terminal cross-sectional area

Force

(mm

2

) (Kg)

0.05<S 0.1 0.25

No visible damage

Bending Strength

of Terminals 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 cross-sectional area

Force

(mm

2

) (Kg)

0.05<S 0.1 0.125

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

/R

25

3 %

High Temperature

Storage IEC 600C68-2-2

100 ± 5 , 1000 ± 24 hrs No visible damage

R

25

/R

25

5 %

Damp Heat,

Steady State IEC 60068-2-78

40 ± 2 , 90~95% RH, 1000 ± 24 hrs No visible damage

R

25

/R

25

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

3 100 ± 5 30 ± 3

4 Room temperature 5 ± 3

No visible damage

R

25

/R

25

3 %

Max.

Power Dissipation

IEC 60539-1 25 ± 5 , Pmax. , 1000 ± 24 hrs No visible damage

R

25

/R

25

5 %

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Packaging



Bulk Packing: 500 pcs/ bag

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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