reliability, ease of handling and very fast response
time. The longer body length makes them
particularly well-suited for applications where fast
response and immersion in fluids are the major
requirements.
NTC Type P60, P65, P85 and P100
• Thermoprobes are recommended for all low cost ,
general purpose applications involving temperature
measurement and control, circuit temperature
compensation, liquid level sensing or fluid flow
sensing. They are ideally suited for applications, that
require a reliable, low cost sensor.
Descriptions
NTC Type P20, P25 and P30
• The Type P20, P25 and P30 miniature thermprobes
consist of a small bead thermistor hermetically
sealed in the tip of a shock-resistant solid glass rod.
The miniature thermoprobes have improved stability
over glass coated and ruggedized glass bead
thermistors.
NTC Type P60, P65, P85 and P100
• The Type P60, P65, P85 and P100 thermoprobes
consist of a large bead thermistor hermetically
sealed in the tip of a shock resistant solid glass rod.
They have excellent long-term stability.
Amphenol
Advanced Sensors
Type P20/25/30 Specifications
NTC Types
P20/25/30
dimensions
Thermal and Electrical Properties
Body
Dimensions:
Thermistor Type:
(All Def initions and Test Methods are Per MIL-PRF-23648)
P20
Minimum Diameter:
.020 in (.51 mm)
.063 in (1.6 mm)
.125 in (3.2 mm)
.250 in (6.3 mm)**
P25
.025 in (.64 mm)
—
.125 in (3.2 mm)
.250 in (6.3 mm)
P30
030 in (.76 mm)
—
.125 in (3.2 mm)
.250 in (6.3 mm)
Standard
Body
Lengths
Lead-wires:
“L”
code “AA”
code “A”
code “B”
Nom. Diameter:
Minimum Lead Length:
Lead Material:
Material System:
.0011 in (.03 mm)
.250 in (6.3 mm)
Platinum Alloy
Nominal
Resistance
.002 in (.05 mm)
.250 in (6.3 mm)
Platinum Alloy
Nominal
Resistance
Range @
77°F (25°C)
—
300 Ω to 680 Ω
680 Ω to 1.6 kΩ
1.6 kΩ to 3.6 kΩ
3.6 kΩ to 6.8 kΩ
6.8 kΩ to 27 kΩ
–
27 kΩ to 75 kΩ
75 kΩ to 130 kΩ
130 kΩ to 240 kΩ
240 kΩ to 360 kΩ
360 kΩ to 820 kΩ
820 kΩ to 1.3 MΩ
1.3 MΩ to 3.3 MΩ
3.3 MΩ to 6.8 MΩ
6.8 MΩ to 10 MΩ
—
—
2.0 sec
23 msec
.16 mW/°C
.80 mW/°C
.025 Watts
302 (150°C)
572°F (300°C)
.003 in (.08 mm)
.250 in (6.3 mm)
Platinum Alloy
Resistance
Range @
77°F (25°C)
—
100 Ω to 300 Ω
300 Ω to 750 Ω
750 Ω to 1.5 kΩ
1.5 kΩ to 3.0 kΩ
.0 kΩ to 6.8 kΩ
6.8 kΩ to 13 kΩ
13 kΩ to 18 kΩ
18 kΩ to 51 kΩ
51 kΩ to 82 kΩ
82 kΩ to 150 kΩ
150 kΩ to 330 kΩ
330 kΩ to 680 kΩ
680 kΩ to 1.5 MΩ
1.5 MΩ to 3.0 MΩ
3.0 MΩ to 6.2 MΩ
6.2 MΩ to 10 MΩ
—
3.0 sec
60 msec
.30 mW/°C
1.50 mW/°C
.035 Watts
302 (150°C)
572°F (300°C)
Code
Letter
E
A
A
A
A
A
A
A
B
B
B
B
B
B
B
B
D
D
R-vs-T
Curve
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
16
25/125
Ratio
5.0
11.8
12.5
14.0
16.9
19.8
22.1
22.7
29.4
30.8
32.3
35.7
38.1
45.0
48.1
56.5
75.6
81.0
Still Air at 77°F (25°C):
Plunge into Water:
Range @
77°F (25°C)
—
300 Ω to 680 Ω
680 Ω to 1.6 kΩ
1.6 kΩ to 3.6 kΩ
3.6 kΩ to 6.8 kΩ
6.8 kΩ to 27 kΩ
–
27 kΩ to 75 kΩ
75 kΩ to 130 kΩ
130 kΩ to 240 kΩ
240 kΩ to 360 kΩ
360 kΩ to 820 kΩ
820 kΩ to 1.3 MΩ
1.3 MΩ to 3.3 MΩ
3.3 MΩ to 6.8 MΩ
6.8 MΩ to 10 MΩ
—
—
1.6 sec
18 msec
.14 mW/°C
.70 mW/°C
.020 Watts
302 (150°C)
572°F (300°C)
Thermal Time Constant:
Dissipation Constant:
Still Air at 77°F (25°C):
Still Water at 77°F (25°C):
Power Rating: (in air)
Maximum Power Rating:
100% Max. Power to:
Derated to 0% at:
Resistance vs temperature characterstics: The nominal resistance range for the zero-power resistance at 77°F (25°C) is shown for each miniature bead-in-glass thermoprobe type and each
available material system. Each material system is denoted by an ordering code letter, a referenced curve number and the nominal 77°F/257°F (25°C/125°C) resistance ratio.
2
Type 60/65/85/100 Specifications
All thermoprobes are aged for extended periods of time. As
such, they exhibit excellent stability for all service tempera-
tures at or below the aging temperature. Thermoprobes that
are manufactured with material system “E” are aged at 221°F
(105°C); those manufactured with a material system having
a 77°F (25°C)/257°F (125°C) ratio of 16.9 or less are aged at
392°F (200°C); and all other material systems are aged at
572°F (300°C). Intermittent operation at temperatures up to
1112°F (600°C) is permissable, however, degraded stability will
result when the aging temperature is exceeded. This appiles
to the NTC Type P20/25/30 also.
NTC Types 60/65/85/100 dimensions
Probe Length Codes
Probe Length Code Letter
Tolerance Code Length in (mm)
A
0.125
(3.17)
B
0.25
(6.35)
C
0.375
(9.52)
D
0.5
(12.7)
F
0.75
(19.05)
H
1
(24.4)
K
1.25
(3.75)
M
1.5
(38.1)
P
1.75
(44.45)
R
2
(50.8)
Thermal and Electrical Properties
Body Dimensions
Thermistor Type:
(All Def initions and Test Methods are Per MIL-PRF-23648)
P60
P65
.065 in (1.7 mm)
.250 in (6.3 mm)
.500 in (12.7 mm)
“A”, “C”
P85
.085 in (2.2 mm)
.250 in (6.3 mm)
.500 in (12.7 mm)
“A”, “C”, “F”, “H”
P100
.100 in (2.5 mm)
.250 in (6.3 mm)
.500 in (12.7 mm)
“A”, “C”, “F”, “H”
“K”, “M”, “P”, “R”
Maximum Diameter:
Standard Length Code “B”
Standard Length Code “D”
Length Codes Available
(Special Order Only)
lead-wires:
Nom. Diameter:
Minimum Lead Length:
Lead Material:
Material System:
Code
Letter
E
A
A
A
A
A
A
A
B
B
B
B
B
B
B
B
D
D
Thermal Time Constant:
Still Air at 77°F (25°C):
Plunge into Water:
Dissipation Constant:
Still Air at 77°F (25°C):
Still Water at 77°F (25°C):
Power Rating: (in air)
Maximum Power Rating:
100% Max Power to:
Derated to 0% at:
R-vs-T
Curve
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
16
5.0
11.8
12.5
14.0
16.9
19.8
22.1
22.7
29.4
30.8
32.3
35.7
38.1
45.0
48.1
56.5
75.6
81.0
Nominal
Resistance
25/125 Ratio
.060 in (1.5 mm)
.250 in (6.3 mm)
.500 in (12.7 mm)
“A”, “C”
.008 in (.20 mm)
.875 in (22 mm)
Tinned Dumet
Nominal
Resistance
Range @ 77°F (25°C)
30 to 51 Ω
51 to 150 Ω
150 to 360 Ω
360 to 750 Ω
750 to 1.5 kΩ
1.5 k to 3.6 kΩ
3.6 k to 6.2 kΩ
6.2 k to 9.1 kΩ
9.1 k to 27 kΩ
27k to 43 kΩ
43 k to 75 kΩ
75 k to 160 kΩ
160 k to 360 kΩ
360 k to 750 kΩ
750 k to 1.5 MΩ
1.5 M to 3.0 MΩ
3.0 M to 8.2 MΩ
8.2 M to 20 MΩ
.008 in (.20 mm)
.875 in (22 mm)
Tinned Dumet
Nominal
Resistance
Range @ 77°F (25°C)
30 to 51 Ω
51 to 150 Ω
150 to 360 Ω
360 to 750 Ω
750 to 1.5 kΩ
1.5 k to 3.6 kΩ
3.6 k to 6.2 kΩ
6.2 k to 9.1 kΩ
9.1 k to 27 kΩ
27 k to 43 kΩ
43 k to 75 kΩ
75 k to 160 kΩ
160 k to 360 kΩ
360 k to 750 kΩ
750 k to 1.5 MΩ
1.5 M to 3.0 MΩ
3.0 M to 8.2 MΩ
8.2 M to 20 MΩ
.012 in (.30 mm)
.875 in (22 mm)
Tinned Dumet
Nominal
Resistance
Range @ 77°F (25°C)
30 to 51 Ω
51 to 150 Ω
150 to 360Ω
360 to 750 Ω
750 to 1.5 kΩ
1.5 k to 3.6 kΩ
3.6 k to 6.2 kΩ
6.2 k to 9.1 kΩ
9.1 k to 27 kΩ
27 k to 43 kΩ
43 k to 75 kΩ
75 k to 160 kΩ
160 k to 360 kΩ
360 k to 750 kΩ
750 k to 1.5 MΩ
1.5 M to 3.0 MΩ
3.0 M to 8.2 MΩ
8.2 M to 20 MΩ
.012 in (.30 mm)
.875 in (22 mm)
Tinned Dumet
Nominal
Resistance
Range @ 77°F (25°C)
30 to 51 Ω
51 to 150 Ω
150 to 360 Ω
360 to 750 Ω
750 to 1.5 kΩ
1.5 k to 3.6 kΩ
3.6 k to 6.2 kΩ
6.2 k to 9.1 kΩ
9.1 k to 27 kΩ
27 k to 43 kΩ
43 k to 75 kΩ
75 k to 160 kΩ
160 k to 360 kΩ
360 k to 750 kΩ
750 k to 1.5 MΩ
1.5 M to 3.0 MΩ
3.0 M to 8.2 MΩ
8.2 M to 20 MΩ
12 sec
300 msec
13 sec
320 msec
16 sec
400 msec
22 sec
600 msec
.60 mW/°C
3.00 mW/°C
.65 mW/°C
3.30 mW/°C
.85 mW/°C
4.00 mW/°C
1.00 mW/°C
5.00 mW/°C
.060 Watts
392°F (200°C)
572°F (300°C)
.065 Watts
392°F (200°C)
572°F (300°C)
.085 Watts
392°F (200°C)
572°F (300°C)
.100 Watts
392(200°C)
572(300°C)
Resistance vs temperature characterstics: The nominal resistance range for the zero-power resistance at 77°F (25°C) is shown for each miniature bead-in-glass thermoprobe type and each
available material system. Each material system is denoted by an ordering code letter, a referenced curve number and the nominal 77°F/257°F (25°C/125°C) resistance ratio.
3
Ordering Information
Type P20/25/30
The code number to be ordered may be specif ied as follows:
P
Miniature bead-in-glass thermoprobe structure
Code
Maximum Probe Diameter
20
20 mil
25
25 mil
30
30 mil
Code
Probe Length
AA
0.063 in (1 mm) ±0.015 in (±0.381 mm)
A
0.125 in (3 mm) ±0.032 in (±0.81 mm)
B
0.25 in (6 mm) ±0.05 in (±1 mm)
Code
Material System Code
X
See thermal and electrical properties table
Code
Zero-Power
103
Resistance at 77°F (25°C)**
Code
Toleranc Code Letter
F
±1%
G
±2%
J
±5%
K
±10%
L
±15%
M
±20%
N
±25%
P
±30%
Q
±40%
R
±50%
S
Non standard consult
Thermometrics
P -
____
-
____ - ____
-
____
-
____ Typical model number
Type P60/65/85/100
The code number to be ordered may be specif ied as follows:
P
Miniature bead-in-glass thermoprobe structure
Code
Maximum Probe Diameter
60
60 mil
65
65 mil
85
80 mil
100
100 mil
Code
Probe Length
(see probe length codes table for restrictions)
B
0.25 in (6 mm) ±0.05 in (±1 mm)
D
0.5 in (12 mm) ±0.063 in (±1 mm)
Code
Material System Code
X
See thermal and electrical properties table
Code
Zero-Power
104
Resistance at 77°F (25°C)**
Code
Toleranc Code Letter
F
±1%
G
±2%
J
±5%
K
±10%
L
±15%
M
±20%
N
±25%
P
±30%
Q
±40%
R
±50%
S
Non standard consult
Thermometrics
P -
____
- ____ - ____
-
____ -
____ Typical model number
*Special tolerances are available on request. Consult Thermometrics for special resistance toler-
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