NTC Thermistor：DHT Type
Glass Axial Type for Temperature Sensing/Compensation
THINKING ELECTRONIC INDUSTRIAL CO., LTD. 60 www.thinking.com.tw 2012.08
All specifications are subject to change without notice
Features
1. RoHS compliant
2. Body size Ф2mm X 4mm
3. Axial lead glass-sealed
4. Operating temperature range: -40℃~+200℃
5. 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
Structure and Dimensions
0.7-
0.9
2max
28±14max
Unit:mm
28±1
0.5±0.02
ChipGlass
CP Wire
(Sn-Plated)
Product Type
DHT
THINKING
NTC Thermistor
DHT Series
Size
0 Ф2
×L4max
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
2 ±2%
3 ±3%
Optional Suffix
Y RoHS
Compliant
Appearance
S Sn-plated CP wire
B Value
34D 3435
355 3550
39H 3975
435 4350
NTC Thermistor：DHT Type
Glass Axial Type for Temperature Sensing/Compensation
THINKING ELECTRONIC INDUSTRIAL CO., LTD. 61 www.thinking.com.tw 2012.08
All specifications are subject to change without notice
Electrical Characteristics
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
Safety
Approvals
Part No.
R25 (KΩ) ( ±%) (K) (±%) Pmax(mW) δ(mW/°C) τ(Sec.) TL~TU(°C) UL cUL
DHT0A502□355* 5 25/85 3550
DHT0B103□355* 10 25/50 3550
DHT0A103□34D* 10 25/85 3435
DHT0A103□347* 10 25/85 3470
DHT0A103□39H* 10 25/85 3975
DHT0B203□395* 20 25/50 3950
DHT0B303□395* 30 25/50 3950
DHT0B473□395* 47 25/50 3950
DHT0B503□395* 50 25/50 3950
DHT0B104□400* 100 25/50 4000
DHT0A104□39H* 100 25/85 3975
DHT0A104□430* 100 25/85 4300
DHT0B204□395* 200 25/50 3950
DHT0A204□400* 200 25/85 4000
DHT0B204□435* 200
1、2、3、
5、10
25/50 4350
2、3 120 2≧ 10≦ -40～+200
Note 1: □ = Tolerance of R25
* = Tolerance of B value
Note 2: UL/cUL File No: E138827
Note 3: Special specifications are available upon request.
Max. Power Dissipation Derating Curve
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) = 200℃
PTa = (TU-Ta)/(TU-25)×Pmax 83% Pmax
NTC Thermistor：DHT Type
Glass Axial Type for Temperature Sensing/Compensation
THINKING ELECTRONIC INDUSTRIAL CO., LTD. 62 www.thinking.com.tw 2012.08
All specifications are subject to change without notice
R-T Characteristic Curves
0
0
1
10
100
1,000
10,000
-40 -20 0 20 40 60 80 100 120 140 160 180 200
Temperature (℃)
Resistance(KΩ)
DHT0A104_39H_SY
DHT0B303_395_SY
DHT0A103_34D_SY
DHT0A103_39H_SY
DHT0A502_355_SY
NTC Thermistor：DHT Type
Glass Axial Type for Temperature Sensing/Compensation
THINKING ELECTRONIC INDUSTRIAL CO., LTD. 63 www.thinking.com.tw 2012.08
All specifications are subject to change without notice
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.)
NTC Thermistor：DHT Type
Glass Axial Type for Temperature Sensing/Compensation
THINKING ELECTRONIC INDUSTRIAL CO., LTD. 64 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 force specified 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 60068-2-2 200 ± 5 ℃, 1000 ± 24 hrs No visible damage
R∣△ 25/R25 5 %∣≦
Damp Heat,
Steady State IEC 60068-2-78 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
3 200 ± 5 30 ± 3
4 Room temperature 5 ± 3
No visible damage
R∣△ 25/R25 3 %∣≦
Max.
Power
Dissipation
IEC 60539-1 25 ± 5 , Pmax.℃, 1000 ± 24 hrs No visible damage
R∣△ 25/R25 5 %∣≦
NTC Thermistor：DHT Type
Glass Axial Type for Temperature Sensing/Compensation
THINKING ELECTRONIC INDUSTRIAL CO., LTD. 65 www.thinking.com.tw 2012.08
All specifications are subject to change without notice
Packaging
Taping Specification
Item W P |L1-L2| T Z S
Max. 53 5.5 1 7 1.2 0.8
Min. 51 4.5 0 5 0 0
Quantity
Bulk Packing: 500 pcs/bag
Reel Packing: 5,000 pcs/reel ● Ammo Packing: 5,000 pcs/box
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
L1 L2
WS
T
T
S
Z
P
Tape Tape
83±2
255±2
80±2
75±1
31±1
340±10
