NTC Thermistors (Disc Type)
Disc Type NTC Thermistors
Type:
ERTD
The “Type ERTD” are disc type negative temperature
coefficient thermistors. Resistances are available
from 8
Ω
to 150 kΩ and B Values are from 3000 K to
5000 K.
The thermistors are designed for temperature detection
and temperature compensation, featuring excellent
electrical and thermal stability.
■
Features
●
Wide selection of temperature coefficients
●
Excellent electrical and thermal stability
■
Recommended Applications
●
Temperature detection
●
Temperature compensation for measuring
instruments
●
Temperature compensation for deflection coil in TV
■
Handling Precautions
See Page 200
■
Explanation of Part Numbers
1
2
3
4
5
6
7
8
9
10
11
12
-
4
6
,
Product Code
ERT NTC Thermistors
2
3
Disc Dim
B
5.0 mm
B
7.5 mm
Lead Style
F Straight Lead
Z ÒZÓ Crimped Lead
Shape
D Disc Type
Center B Value (K)
E 2501Ð3000
F 3001Ð3500
G 3501Ð4000
H 4001Ð4500
I 4501Ð5000
Resistance
Tolerance
±
5%
J
K
±
10 %
±
15 %
L
Resistance R
25
(
Ω
)
The first two digits
are significant figures
of resistance and the
third one denotes
number of zeros
following them.
Decimal point is ex-
pressed by R as 1.4
=1R4.
Option
S Standard
T Taping Type
■
Derating Curve for the NTC Thermistor
Rated Load (%)
For the NTC Thermistor operated in ambient
temperatures above 25 ˚C, power rating shall be
derated in accordance with the figure on the right.
120
100
80
60
40
20
0
Ð20
0
20 25
40
60
80
100
120 125
Ambient Temperature (¡C)
Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
Mar. 2005
NTC Thermistors (Disc Type)
■
Ratings and Characteristics
Part No.
Zero-Power
Resistance
at 25 °C(Ω)
20
40
75
100
100
170
250
250
300
350
600
800
1000
1400
2000
3300
4600
8000
10000
15000
33000
50000
150000
8
13
16
20
30
40
75
80
130
500
4000
20000
80000
K
±10 %
B Value
½½
(K)
Maximum
Permissible
Power(W)
Heat
Dissipation
Constant
(mW/°C)
Thermal Time Resistance
Constant
Ratio
(s)
R
25
/R
50
2.18
2.30
2.62
2.48
2.62
2.62
2.48
2.76
2.76
2.48
2.83
0.4
4.5
20
2.76
2.61
2.76
2.83
2.83
2.90
2.90
2.90
2.98
3.22
3.22
3.48
2.18
2.30
2.30
2.30
2.30
2.30
0.6
7.0
27
2.62
2.62
2.62
2.83
2.90
3.22
3.70
L
±15 %
Table
A/B
Curve No.
—
—
1
—
2
3
—
4
—
5
6
7
—
—
8
9
—
10
—
11
12
13
14
15
16
—
—
—
—
—
—
—
—
—
—
17
ERTD2FEL
½
200S
ERTD2FFL
½
400S
ERTD2FGL
½
750S
ERTD2FFL
½
101S
ERTD2FGL
½
101S
ERTD2FGL
½
171S
ERTD2FFL
½
251S
ERTD2FGL
½
251S
ERTD2FGL
½
301S
ERTD2FFL
½
351S
ERTD2FGL
½
601S
ERTD2FGL
½
801S
ERTD2FGL
½
102S
ERTD2FGL
½
142S
ERTD2FGL
½
202S
ERTD2FGL
½
332S
ERTD2FHL
½
462S
ERTD2FHL
½
802S
ERTD2FHL
½
103S
ERTD2FHL
½
153S
ERTD2FHL
½
333S
ERTD2FHL
½
503S
ERTD2FIL
½
154S
ERTD3FEL
½
8R0S
ERTD3FFL
½
130S
ERTD3FFL
½
160S
ERTD3FFL
½
200S
ERTD3FFL
½
300S
ERTD3FFL
½
400S
ERTD3FGL
½
750S
ERTD3FGL
½
800S
ERTD3FGL
½
131S
ERTD3FGL
½
501S
ERTD3FHL
½
402S
ERTD3FHL
½
203S
ERTD3FIL
½
803S
½
3000
3200
3700
3500
3700
3700
3500
3900
3900
3500
4000
3900
3700
3900
4000
4000
4100
4100
4100
4200
4500
4500
4800
3000
3200
3200
3200
3200
3200
3700
3700
3700
4000
4100
4500
5000
Resistance Tolerance Code
J
±5 %
●
Operating Temperature Range: –30 to +125 °C
Tolerance of “B value”: ±10 %
kn
(R
25
/R
50
)
R
25
=Resistance at 25.0 °C
B=
R
50
=Resistance at 50.0 °C
1/298.15–1/323.15
½½
Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
Mar. 2005
NTC Thermistors (Disc Type)
■
Dimensions in mm (not to scale)
Straight Lead Type
F Type
B
d
B
D
Crimped Lead Type
Z Type
B
d
B
D
T
k
T
h
e
3
2
1
7 max.
3
2
1
W
6 max.
*
F Type
fD
D2
D3
5.0±0.5
7.5±0.5
T
1.3±0.5
1.4±0.5
k
30.0 min.
30.0 min.
W
2.5±1.0
5.0±1.0
fd
0.4
0.5
Z Type
fD
D2
5.0±0.5
T
1.3±0.5
u
3.0 max.
(nom.2.5)
e
4.5±1.0
h
6.0 max.
(nom.5.0)
W
5.0±1.0
fd
0.5
■
Resistance vs. Temperature (Table A)
1000000
14 17
13
12
■
Voltage vs. Current (Table B)
100
10
W
Ω
100000
10
00
00
11
DC Voltage (V)
13
11
Ω
10
9
8
7
6
5
4
3
2
1
16
15
10
W
1
W
5
2.
1.
W
W
.2 5
W 2 1.4
W
6
W
0. 4 W
0.
9
00
0
u
10
8
4
3
1
0.
W
Ω
10000
01
0.
W
10
00
1
01
00
0.
15
Resistance (
Ω
)
1000
10
10
Ω
100
0.1
0
Ω
1
00
0.
W
W
0.1
1
10
DC Current (mA)
100
1000
10
1
0.1
2.4
125
2.6
2.8
3.0
3.2
3.4
25
3.6
50
100
Temperature (ûC)
3.8
1 (
×
10
Ð3
K
Ð1
)
T
0
Ð20
Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
Mar. 2005
NTC Thermistors (Disc Type)
■
Resistance Color Code
Code
Color
Black
Brown
Red
Orange
Yellow
Green
Blue
Purple
Gray
White
Gold
Silver
1(1st Digit)
0
1
2
3
4
5
6
7
8
9
—
—
2(2nd Digit)
0
1
2
3
4
5
6
7
8
9
—
—
3(Multiplier)
10
0
10
1
10
2
10
3
10
4
10
5
10
6
10
7
10
8
10
9
10
–1
10
–2
■
Taping Dimensions in mm (not to scale)
Taping Type
2
2
o
D
o
D
B
,
B
@
9
0
0
2
.
2
P
P
0
P
1
P
2
fd
F
∆h
W
W
0
W
1
W
2
H
H
0
k
fD
0
t
12.7±1.0
12.7±0.3
3.85±0.70
6.35±1.30
0.50±0.05
5.0±1.0
0±5.0
18.0
+1.0
–0.5
12.5 min.
9.00
+0.75
–0.50
3.0 max
21.0±2.0
16.0±0.5
2.0 max.
4.0±0.3
0.5±0.2
9
9
9
k
Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
J
Mar. 2005
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