NTC Thermistor：DHT Type
：
Glass Axial Type for Temperature Sensing/Compensation
Features
1.
2.
3.
4.
5.
RoHS compliant
Body size
ψ2mm
X 4mm
Axial lead glass-sealed
-40 ~ +200℃ operating temperature range
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. Automotive electronics
3. Heaters
Part Number Code
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Product Type
Thinking
DHT NTC thermistor
DHT type
0
Size
ψ2
×L4max
Zero Power
Resistance
at 25℃ (R
25
)
102
103
473
1KΩ
10KΩ
47KΩ
Tolerance of
R
25
F
G
H
J
K
±1%
±2%
±3%
±5%
±10%
B Value
First
Two Digits
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
2
3
±2%
±3%
Optional Suffix
Y
RoHS
compliant
Definition of
B Value
A
B
B
25/85
B
25/50
Appearance
S
Sn-plated CP wire
Structure and Dimensions
2max
CP Wire
(Sn-Plated)
Glass
Chip
28±1
0.7-
0.9
4max
28±1
Unit:mm
THINKING ELECTRONIC INDUSTRIAL Co., LTD.
All specifications are subject to change without notice
1
0.5±0.02
www.thinking.com.tw
2010.06
NTC Thermistor：DHT Type
：
Glass Axial Type for Temperature Sensing/Compensation
Electrical Characteristics
Zero Power
Resistance
at 25°
C
R
25
(K )
DHT0A502□355*
DHT0B103□355*
DHT0A103□34D*
DHT0A103□347*
DHT0A103□39H*
DHT0B203□395*
DHT0B303□395*
DHT0B473□395*
DHT0B503□395*
DHT0B104□400*
DHT0A104□39H*
DHT0A104□430*
DHT0B204□395*
DHT0A204□400*
DHT0B204□435*
5
10
10
10
10
20
30
47
50
100
100
100
200
200
200
Part No.
Tolerance
of
R
25
( ±%)
B
25/85
Value
(K)
25/85
25/50
25/85
25/85
25/85
25/50
25/50
25/50
25/50
25/50
25/85
25/85
25/50
25/85
25/50
3550
3550
3435
3470
3975
3950
3950
3950
3950
4000
3975
4300
3950
4000
4350
Tolerance
of
B Value
(±%)
Max.
Power
Dissipation
at 25℃
P
max
(mW)
Dissipation
Factor
δ(mW/°
C)
Thermal
Time
Constant
τ(Sec.)
Operating
Safety
Temperature
Approvals
Range
T
L
~T
U
(°
C)
UL cUL
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
1、2、3、
5、10
2、3
120
≧
2
≦
10
-40½+200
Note 1:
□
= Tolerance of R
25
Note 2: * = Tolerance of B value
Note3: UL/
cUL
File No E138827
Max. Power Dissipation Derating Curve
100%
T
U
：Maximum
operating temperature (℃)
T
L
：Minimum
operating temperature (℃)
P
Ta
/P
max
For example：Ambient temperature(Ta)=55℃
Maximum operating temperature(T
U
)＝200℃
P
Ta
=(T
U
-Ta)/(T
U
-25)×Pmax
≅
83% Pmax
0%
T
L
0
25
T
U
Ambient temperature (
℃
)
THINKING ELECTRONIC INDUSTRIAL Co., LTD.
All specifications are subject to change without notice
2
www.thinking.com.tw
2010.06
NTC Thermistor：DHT Type
：
Glass Axial Type for Temperature Sensing/Compensation
R-T Characteristic Curves
10,000
1,000
100
Resistance(K )
10
1
DHT0A104_39H_SY
DHT0B303_395_SY
0
DHT0A103_34D_SY
DHT0A103_39H_SY
DHT0A502_355_SY
0
-40
-20
0
20
40
60
80
100
120
140
160
180
200
Temperature (
℃
)
THINKING ELECTRONIC INDUSTRIAL Co., LTD.
All specifications are subject to change without notice
3
www.thinking.com.tw
2010.06
NTC Thermistor：DHT Type
：
Glass Axial Type for Temperature Sensing/Compensation
Soldering Recommendation
Wave Soldering Profile
Preheating
260℃ Max
Temperature
Soldering
Cooling
Note 2
Note 3
130±20℃
Note 1:
(1~3℃)/sec
Approx. 200℃/sec
5℃/sec. (Max)
Note 1
Tamb
Note 2:
Note 3:
30~90 sec.
＜1
sec.
＜10
sec.
Time
Recommended Reworking Conditions With Soldering Iron
Item
Temperature of Soldering Iron-tip
Soldering Time
Distance from Thermistor
Conditions
360℃ (max.)
3 sec (max.)
2 mm (min.)
THINKING ELECTRONIC INDUSTRIAL Co., LTD.
All specifications are subject to change without notice
4
www.thinking.com.tw
2010.06
NTC Thermistor：DHT Type
：
Glass Axial Type for Temperature Sensing/Compensation
Reliability
Item
Standard
Test conditions / Methods
Gradually applying the force specified and keeping the unit fixed for
10±1 sec.
Tensile
Strength of
Terminations
Terminal diameter
(mm)
0.3<d≦0.5
Force
(Kg)
0.5
Specifications
IEC60068-2-21
No visible damage
Hold specimen and apply the force specified below to each lead. Bend
the specimen to 90° then return to the original po sition. Repeat the
,
procedure in the opposite direction.
Bending
Strength of
Terminations
IEC60068-2-21
Terminal diameter
(mm)
0.3<d≦0.5
Force
(Kg)
0.25
No visible damage
Solderability
Resistance to
Soldering
Heat
High
Temperature
Storage
Damp Heat,
Steady State
IEC60068-2-20
245 ± 3
℃
, 3 ± 0.3 sec
At least 95% of terminal
electrode is covered by
new solder
No visible damage
∣△R
25
/R
25
∣≦
3 %
No visible damage
∣△R
25
/R
25
∣≦
5 %
No visible damage
∣△R
25
/R
25
∣≦
3 %
IEC60068-2-20
260 ± 3
℃
, 10 ± 1 sec
IEC60068-2-2
IEC60068-2-3
200 ± 5
℃
, 1000 ± 24 hrs
40
±
2℃ ,
90~95% RH , 1000
±
24 hrs
The conditions shown below shall be repeated 5 cycles
Step
Rapid Change
of
IEC60068-2-14
Temperature
1
2
3
4
Max.
Power
Dissipation
Temperature (
℃
)
-40±5
Room temperature
200±5
Room temperature
Period (minutes)
30±3
5±3
30±3
5±3
No visible damage
∣∣
R
25
/R
25
∣≦
3 %
IEC 60539-1
25 ± 5
℃
, Pmax., 1000
±
24 hrs
No visible damage
∣∣
R
25
/R
25
∣≦
5 %
THINKING ELECTRONIC INDUSTRIAL Co., LTD.
All specifications are subject to change without notice
5
www.thinking.com.tw
2010.06
