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Temperature Protection Devices
REMINDERS FOR USING THESE PRODUCTS
Before using these products, be sure to request the delivery specifications.
SAFETY REMINDERS
Please pay sufficient attention to the warnings for safe designing when using these products.
REMINDERS
Please pay careful attention to the precautions and follow safe designing practices when using these products.
Incorrect usage may lead to destroyed NTC thermistors and damages or malfunctions with the devices used.
Please use them within the ranges of the ratings and performance provided in the Catalog and delivery specifications upon confirming the
environments where they are to be used and installed.
Do not use them outside the operating temperature range.
Do not use them with the ratings or maximum permissible power levels exceeded.
Do not quickly apply 5mW or more of load with the constant-voltage power supply in the NTC thermistor as this may lead to staying in
thermal runaway mode or the red-shorting of chips.
Please be cautious of the applied voltage in thermistors as instruments may malfunction with the lowering of resistance due to self heating.
With instruments that consumers can touch the thermistors with their hands, please carefully warn them not to touch the thermistors.
Store them in locations where the temperature is –10°C to +40°C and the relative humidity is 75% or below, avoid environments where
there are sudden changes in temperatures, direct sunlight, corrosive gas, grit, or dust, and keep them packed in a manner where no
loading stress is applied in order to avoid deterioration and damage. (Please use them within six months.)
When sealing thermistors, please do so upon first considering the type, quantity, hardening conditions, and adhesiveness of the sealing
material and confirming its reliability.
Avoid powerful vibrations, impact (such as by dropping), pressure, etc. on thermistors that exceed the prescribed levels.
Do not use them for long periods of time in environments with a relative humidity of over 85%. (This excludes cases where
countermeasures have been taken.)
Do not use them in the following environments. (This excludes cases where countermeasures have been taken.)
・Environments
with corrosive gas (Cl
2
, NH
3
, SOx, NOx, etc.)
・Environments
with highly conductive substances (electrolytes, water, saltwater, etc.)
・Environments
with acid, alkali, or organic solvents
・Dusty
areas
Please observe the following precautions when attaching them to substrates as failure to do so may result in destruction or malfunction.
・Do
not let the substrates get warped or twisted at any time during the soldering.
・The
landing size must be even on both the left and right sides.
・Do
not use items that have been dropped or detached.
・Do
not allow the adherence of more solder than needed.
Reflow mounting is recommended with NTC thermistors, and not flow (dip) mounting.
Attaching or making corrections with a soldering iron is not recommended as it can lead to troubles such as significant distorting due to
thermal shock or cracking. If a soldering iron must be used, it should be 30W or below with the temperature of the tip at 350°C or below,
and at a maximum of 5 seconds of soldering time. Also, do not let the tip of the soldering iron come in direct contact with the chips.
When attaching or making corrections with a soldering iron, the temperature of the tip of the soldering iron should be 350°C or below at a
maximum of 5 seconds of soldering time. Do not let the tip of the soldering iron come in directly come in contact with the chips as doing
so may lead to particularly large distortions due to thermal shock or cracking.
Please use a substance such as resin that does not generate hydrogen (H
2
) when forming insulation film over chips.
Please contact our sales offices when considering the use of the products listed on this catalog for applications, whose performance and/
or quality require a more stringent level of safety or reliability, or whose failure, malfunction or trouble could cause serious damage to
society, person or property ('specific uses' such as automobiles, airplanes,medical instruments, nuclear devices, etc.) as well as when
considering the use for applications that exceed the range and conditions of this catalog.
Please note that we are not responsible for any damages or losses incurred resulting from the use of these products that exceeds the range
and conditions of this catalog or specific uses.
Please take appropriate measures such as acquiring protective circuits and devices that meet the uses, applications, and conditions of the
instruments and keeping backup circuits.
20150928 / tpd_ntc-thermistor_ntcg_en.fm
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Temperature Protection Devices
NTC Thermistors
SMD
Product compatible with RoHS directive
Compatible with lead-free solders
Overview of the NTCG Series
CHARACTERISTICS OF NTC THERMISTORS (EXAMPLE)
NTC(Negative Temperature Coefficient) Thermistors are manufactured from sintered metal oxides. Each thermistor consists of a combination
of two to four of the following materials: Manganese, Nickel, Cobalt and Copper. NTC thermistors are semiconductor resistors that exhibit
decreasing resistance characteristics with increasing temperature. TDK thermistors have low thermal time constants which result in extremely
high rates of resistance change to accurately track the temperature.
FEATURES
Small sized 0603 type (L0.6× W0.3× T0.3mm) series are available.
Lead (Pb) free product. By using lead-less terminal electrodes and electroplating (Ni-Sn), this product realized excellent solderablity and
soldering heat resistance, comparing with the conventional eutectic mixture solder and lead-free solder (Sn/Ag/Cu, etc.).
Product series provides a wide range of resistances and B constants. Good stability of resistance value after soldering. The 0603, 1005,
1608 and 2012 size provide 4 different shapes with identical resistance-temperature characteristics. Attains less that low floating capac-
itance (using TCXO) in the high frequency region.
APPLICATION
Temperature sensor
Temperature compensation
TYPICAL USED SET AND TDK PRODUCT NAMES
Used set
TCXO(Temperature
compensated crystal
oscillator)
Mobile
communication
devices
Power amplifier module
LCD
Temperature monitor
Battery pack
CPU
LCD
HDD
Computer devices
ODD
Battery pack
Auto focus
Iris stop
Battery pack
Car audio unit
Car CD or MD
Optical transmission
system
Printer
CD or DVD write current compensated circuit
10k: to 100k:
3435K to 4550K
3435K to 4550K
3435K to 4100K
3435K to 4550K
3435K to 4550K
4550K
4100K to 4550K
3435K to 4550K
Applied circuit
Low-temperature area compensated circuit
High-temperature area compensated circuit
Power amplifier temperature compensated circuit
LCD temperature compensated circuit
Various-circuit temperature compensated circuit
Battery temperature monitor and charging control
circuit
CPU temperature monitor
LCD temperature compensated circuit
Pickup temperature compensated circuit
Resistance
(R25)
30: to 100:
1.0k: to 3.0k:
30: to 10k:
22k: to 1M:
10k: to 470k:
10k: to 100k:
10k: to 1M:
22k: to 1M:
10k: to 100k:
B constant
(B25/85)
3250K(2800K)
4100K to 4500K
3250K to 4500K
4550K to 4750K
4100K to 4750K
3435K to 4550K
3435K to 4550K
4550K to 4750K
3435K to 4550K
TDK recommended
part number
NTCG103EH400H
NTCG104BH102H
NTCG104KH202J
NTCG104LH473J
NTCG104BH103J
NTCG103JF103F
NTCG103JF103F
NTCG104LH473J
NTCG103JF103F
NTCG104EF104F
NTCG103JF103F
NTCG104EF104F
NTCG103JF103F
NTCG104BH103J
NTCG104LH473J
NTCG103JF103F
NTCG104LH473J
NTCG104LH154J
NTCG104LH473H
DVC, DSC
Battery temperature monitor and charging control
10k: to 100k:
circuit
Driving circuit temperature compensated circuit
1.0k: to 15k:
Hole element temperature compensated circuit
10k: to 100k:
Battery temperature monitor and charging control
10k: to 100k:
circuit
Laser pickup temperature compensated circuit
22k: to 150k:
Laser transmitter or receiver temperature compensated
1.0k: to 150k:
circuit
Ink viscosity controller
10k: to 47k:
RoHS Directive Compliant Product: See the following for more details related to RoHS Directive compliant products. http://product.tdk.com/en/environment/rohs/
Please be sure to request delivery specifications that provide further details on the features and specifications of the products for proper and safe use.
Please note that the contents may change without any prior notice due to reasons such as upgrading.
20150928 / tpd_ntc-thermistor_ntcg_en.fm
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Temperature Protection Devices
Overview of the NTCG Series
RESISTANCE VALUE RANGE
Resistance
Type
NTCG06
NTCG10
NTCG16
NTCG20
10Ω
30Ω
30Ω
30Ω
100Ω
1kΩ
10kΩ
100kΩ
1MΩ
1MΩ
1MΩ
1MΩ
470Ω
150kΩ
LIST OF SERIES BY TYPE
Type
B constant(K)
2800K
3250K
3435K
3650K
4100K
4100K
4550K
4750K
4500K
3250K
3100K
3300K
3450K
3650K
3850K
4000K
4150K
Nominal resistance(Ω) [at 25°C]
10Ω
100Ω
100Ω
30Ω
150Ω
220Ω
1kΩ
10kΩ
100kΩ
1MΩ
10kΩ
680Ω
1.0kΩ
3.0kΩ
15kΩ
3.3kΩ
(0603 type: 33kΩ min.) 22kΩ
NTCG06
NTCG10
NTCG16
150kΩ
220kΩ
1MΩ
470Ω
NTCG20
2.0kΩ
3.0kΩ
680Ω
1.0kΩ
1.5kΩ
2.2kΩ
3.3kΩ
6.8kΩ
4.7kΩ
10kΩ
15kΩ
22kΩ 33kΩ
47kΩ
68kΩ
100kΩ
150kΩ
∗
B constant is calculated from the resistance at 25°C and 85°C
The B constant indicates the magnitude of a change in a zero-load resistance value to a temperature, and is obtained based on arbitrary
two temperatures in resistance-to-temperature characteristics.
B constant calculation formula
B=
InR1
–
InR2
(1/T1)
–
(1/T2)
B: B Constant (K)
T1: Arbitrary temperature (K)
T2: Arbitrary temperature different from T1 (K)
R1: Zero-load resistance value at temperature T1(
:
)
R2: Zero-load resistance value at temperature T2(
:
)
Each temperature is measured in absolute temperature. 0°C=273.15K
Please be sure to request delivery specifications that provide further details on the features and specifications of the products for proper and safe use.
Please note that the contents may change without any prior notice due to reasons such as upgrading.
20150928 / tpd_ntc-thermistor_ntcg_en.fm
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