GE
Measurement & Control Solutions
NTC Diode
Thermometrics Thermistors
A range of NTC chip thermistors in DO-35 style
glass package (diode outline) with axial solder-
coated copper-clad steel wires.
• Designed for accurate temperature
measurement, control and compensation
• Tight tolerances on resistance and B value
• Operation up to 482°F (250°C) with excellent
stability
• Glass body provides hermetic seal and voltage
insulation and excellent stability
• Designed for cost effective solid state sensor
• Lead-wires metallurgically bonded to
thermistor element for improved reliability
(Type GE only)
• Resistant to corrosive atmospheres and harsh
environments
• Available on axial bandolier to IEC-286-1/
EIA-468A and packet taped to EIA RS-481 for
MELF.
• Also available loose-packed with axial, radial
and SMD wire forms
• Suitable for automotive, telecom (battery
packs), HVAC and white goods applications
• Temperature sensing for household
appliances such as rice cookers, electronic
ranges, ovens, etc.
• Temperature sensing for industrial products
such as pharmaceuticals, chemicals, food,
etc.components.
Type DK Specifications
Chip thermistor in DO-35 glass package
DK-N
0.08 in (2 mm)
maximum
0.02 in (0.5 mm)
nominal
• Other resistance values within the ranges shown;
e.g. code DKA302*2 for 3000 Ω ±2% at 77°F (25°C)
• Reference temperatures in the range 0°F to 302°F
(-18°C to 150°C)
• Operation to 572°F (300°C) (no solder coating on wires)
• Wire lengths 0.16 in to 1.26 in (4 mm to 32 mm)
±0.04 in (±1 mm) for DK-N; up to 1.02 in (26 mm) for
DK-H
Options
1.06 in (27 mm)
minimum
DK-H
0.08 in (2 mm) 0.16 in (4 mm)
nominal
maximum
Inside radius
0.05 in (1.2 mm)
nominal
0.2 in (4.2 mm)
maximum
Ø 0.02 in (0.5 mm)
0.1 in (2.8 mm)
nominal
0.8 in (19.5 mm) ±1
Coding
Replace * in the codes shown below as follows:
• Axial, loose-packed: N
• Axial, bandoliered: B
• Radial, loose-packed: H
• Surface mount, loose-packed: M
NTC Type DK wires should not be bent within 0.08
in (2 mm) of glass body
Data
• Operating temperature: -40°F to 482°F (-40°C to
250°C)
• Thermal time constant: 7 seconds (cooling in air)
• Dissipation factor: 3.0 mW/K
• Mass: 0.2 g
• Packing/MOQ: 1000/box (loose),
5000/reel (bandoliered)
R25
W
2000
5000
10,000
10,000
12,000
10,000
20,000
30,000
50,000
100,000
200,000
500,000
1,000,000
Material
system
2
2
2
5A
5A
3
3
3
3
3
G
D
D
B 25/85 K
3540 ±1%
3540 ±1%
3540 ±1%
3730 ±2%
3730 ±2%
3960 ±1%
3960 ±1%
3960 ±1%
3960 ±1%
3960 ±1%
4263 ±2%
4573 ±2%
4573 ±2%
Code
R25 ±2%
DKA202*2
DKA502*2
DKA103*2
Code
R25 ±3%
DKA202*3
DKA502*3
DKA103*3
DKC103*3
Code
R25 ±5%
DKA202*5
DKA502*5
DKA103*5
DKC103*5
DKC123*5
DKF103*5
DKF203*5
DKF303*5
DKF503*5
DKF104*5
DKG204*5
DKD504*5
DKD105*5
Code
R25 ±10%
DKA202*10
DKA502*10
DKA103*10
DKC103*10
DKC123*10
DKF103*10
DKF203*10
DKF303*10
DKF503*10
DKF104*10
DKG204*10
DKD504*10
DKD105*10
DKC123*2
DKF103*2
DKF203*2
DKF303*2
DKF503*2
DKF104*2
DKC123*3
DKF103*3
DKF203*3
DKF303*3
DKF503*3
DKF104*3
See separate tables for resistance-temperature data..
Consult factory for additional tolerance requirements.
Type DKM
Specifications
Glass encapsulated SMD thermistor
0.04 in
(1 mm)
minimum
0.2 in (4.2 mm) maximum
0.4 in (9.0 mm)/
0.4 in (9.5 mm )
0.09 in (2.2 mm) maximum
0.04 in (1 mm) minimum
Description
A range of thermistors in DO-35 style glass package
(diode outline formed for surface lead-wires and
applications) with solder-coated copper-clad steel
lead-wires.
NTC Type DKM wires should not be bent
within 0.08 in (2 mm) of glass body
Options
• Other resistance values within the ranges shown;
e.g. code DKA302M2 for 3000 Ω ±2% at 77°F (25°C)
• Reference temperatures in the range 32°F to 302°F
(0°C to 150°C)
• For tape and reel, add suffix “AB”
• Operation to 572°F (300°C); no solder coating on
lead-wires
Data
• Operating temperature: -40°F to 482°F
(-40°C to 250°C)
• Thermal time constant: 7 seconds (cooling in air)
• Dissipation factor: 3.0 mW/K
• Mass: 0.2 g
• Packing/MOQ: 1000/box (loose)
R25
W
2000
5000
10,000
10,000
10,000
20,000
30,000
50,000
100,000
200,000
500,000
Material
System
2
2
2
5A
3
3
3
3
3
G
D
D
B 25/85 K
3540 ±1%
3540 ±1%
3540 ±1%
3730 ±2%
3960 ±1%
3960 ±1%
3960 ±1%
3960 ±1%
3960 ±1%
4263 ±2%
4573 ±2%
4573 ±2%
Code
R25 ±2%
DKA202M2
DKA502M*2
DKA103M2
Code
R25 ±3%
DKA202M3
DKA502M3
DKA103M3
DKC103M3
Code
R25 ±5%
DKA202M*5
DKA502M5
DKA103M5
DKC103M5
DKF103M5
DKF203M5
DKF303M5
DKF503M5
DKF104M5
DKG204M5
DKD504M5
DKD105M5
Code
R25 ±10%
DKA202M10
DKA502M10
DKA103M10
DKC103M10
DKF103M10
DKF203M10
DKF303M10
DKF503M10
DKF104M10
DKG204M10
DKD504M10
DKD105M10
DKF103M2
DKF203M2
DKF303M2
DKF503M2
DKF104M2
DKF103M3
DKF203M3
DKF303M3
DKF503M3
DKF104M3
See separate tables for resistance-temperature data..
Consult factory for additional tolerance requirements.
Type GE
Specifications
Glass encapsulated DO-35 package
Tinned AWG 24
Options
• For reel taping “R” suffix
• Nickel leads for welding
• Other resistances in the range 250 Ω to 5 MΩ
• Other tolerances, tolerances at other temperatures
• Alternative leads lengths, lead materials
• Can be expanded to 572°F (300°C) with nickel leads
1.15 in (29.2 mm)
± 0.1
0.155 in
(3.93 mm)
maximum
1.15 in (29.2 mm)
± 0.1
Ø 0.075 in
(1.9 mm)
maximum
NTC Type GE dimensions
Data
Ro@25° C
(W )
250
500
1K
2K
2786
3K
4K
5K
10K
20K
30K
50K
100K
200K
500K
1M
5M
Material System
GE5.5*
GE5.5*
GE7.3
GE7.3
GE10.1
GE7.6
GE7.6
GE7.6
GE9.7A
GE9.8
GE9.8
GE9.7B
GE9.7B
GE12.3
GE13.8
GE14.5
GE16.4
Beta 25/85
2983
2983
3499
3499
4102
3553
3553
3553
3992
3974
3974
3952
3952
4365
4567
4661
4848
Type Number
AL03006-165.9-55-K
AL03006-331.8-55-K
AL03006-624-73-K
AL03006-1248-73-K
AL03006-1576-101-K
AL03006-1847-76-K
AL03006-2463-76-K
AL03006-3079-76-K
AL03006-5818-97-K
AL03006-11.7K-98-K
AL03006-17.53K-98-K
AL03006-29.1K-97-K
AL03006-58.2K-97-K
AL03006-111.3K-123-K
AL03006-269.8K-138-K
AL03006-535K-145-K
AL03006-2.6M-164-K
• Standard resistance tolerance: ±10% @ 77°F
(25°C)
• Dissipation constant: 3.0 mW/K
• Time constant: 7 seconds
• Operating range: -58°F to 400°F (-50°C to
204°C
*maximum operating temperature 302°F (150°C)
Type MELF
Specifications
Glass encapsulated SMD thermistor
Tinned dumet contacts
(2 places)
Glass
Ø 0.063 to 0.067 in
(1.6 to 1.7 mm)
Description
Hermetically sealed, glass encapsulated thermistor in
SOD-80 SMD package.
0.016 to 0.022 in
(0.41 to 0.56 mm)
0.13 to 0.146 in
(3.3 to 3.71 mm)
0.016 to 0.022 in
(0.41 to 0.56 mm)
Options
• For ±5% @ 77°F (25°C), replace “K” with “J”
• For ±3% @ 77°F (25°C), replace “K” with “H”
• For ±2% @ 77°F (25°C), replace “K” with “G”
• For reel taping add “R” suffix
• Other resistances in the range 250 Ω to 5 MΩ
available
• Other tolerances, tolerances at other temperatures
Ro@25° C
(W )
250
500
1K
2K
2786
3K
4K
5K
10K
20K
30K
50K
100K
200K
500K
1M
5M
Material System
GE5.5*
GE5.5*
GE7.3
GE7.3
GE10.1
GE7.6
GE7.6
GE7.6
GE9.7A
GE9.8
GE9.8
GE9.7B
GE9.7B
GE12.3
GE13.8
GE14.5
GE16.4
Beta 25/85
2983
2983
3499
3499
4102
3553
3553
3553
3992
3974
3974
3952
3952
4365
4567
4661
4848
Type Number
03006-165.9-55-K
03006-331.8-55-K
03006-624-73-K
03006-1248-73-K
03006-1576-101-K
03006-1847-76-K
03006-2463-76-K
03006-3079-76-K
03006-5818-97-K
03006-11.7K-98-K
03006-17.53K-98-K
03006-29.1K-97-K
03006-58.2-97-K
03006-111.3K-123-K
03006-269.8K-138-K
03006-535K-145-K
03006-2.6M-164-K
NTC Type MELF dimensions
Data
• Standard resistance tolerance: ±10% @ 77°F
(25°C)
• Dissipation constant: 3.0 mW/°C
• Time constant: 7 seconds
• Operating range: -58°F to 400°F (-50°C to
*maximum operating temperature 302°F (150°C)
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