NTC Thermistors (Glass-Sealed Type)
Glass-sealed NTC Thermistors
Type:
ERTG
Glass-sealed NTC Thermistors, Type ERTG, are miniature
axial leaded type thermistors in hermetically sealed
glass tube packages, featuring high accuracy and high
reliability due to their unique construction.
■ Features
● Wide Operating Range
■ Recommended Applications
Temperature detection for:
● Cooking appliances
–
°
Nickel plated lead type: 40 to +300 C
–
°
Solder plated lead type: 40 to +125 C
● Air conditioning equipment
● Automobiles
f
● Miniature axial lead type: ( 1.6҂2.4 mm)
● Quick response
● Highly stable in long term operation
● RoHS compliant
■ Packaging Specifications
■ Handling Precautions
See Page 168
See Page 167
■ Explanation of Part Numbers
1
2
3
4
5
6
7
8
9
10
11
12
E
R
T
G
2
Product Code
Size Code
Lead Style Code
Axial Lead
B Value Class Code
Resistance
Tolerance Code
Special
Specification
Taping
Nominal Resistance R25 (ȑ)
ERT
NTC Thermistors
2
f1.6 mm
3251 to 3500
3501 to 3750
3751 to 4000
G
H
I
The first two digits
are significant figures
of resistance and the
third one denotes
number of zeros
G
H
J
2 %
3 %
T
Solder Plated
Lead Type
K
Nickel Plated
Lead Type
5 %
N
Type Code
K
10 %
following them.
Glass-sealed
Type
G
■ Ratings and Characteristics
B Value
Zero-Power
Operating
Temperature
Range
Table
Thermal Time
Constant
Dissipation
Factor
Part No.
Resistance
A
(
a
25 °C)
Curve No.
25 °C/50 °C 25 °C/85 °C
ERTG2KH ✽502
5.0 k
8.0 k
3550 K
3550 K
3380 K
3950 K
3950 K
3550 K
3550 K
3380 K
3950 K
3950 K
(3615 K)
(3615 K)
(3435 K)
(3980 K)
(3980 K)
(3615 K)
(3615 K)
(3435 K)
(3980 K)
(3980 K)
1
2
3
4
5
1
2
3
4
5
२
ȑ
ȑ
ȑ
ȑ
ȑ
ȑ
ȑ
ȑ
ȑ
ȑ
ERTG2KH ✽802
–40 to +125 °C
२
ERTG2KG ✽103
10.0 k
20.0 k
33.0 k
5.0 k
6 s
Solder Plated
Type
1.5 mW/°C
२
ERTG2KI ✽203
२
ERTG2KI ✽333
२
ERTG2NH ✽502
२
ERTG2NH ✽802
8.0 k
–40 to +300 °C
२
ERTG2NG ✽103
10.0 k
20.0 k
33.0 k
6 s
Nickel Plated
Type
1.5 mW/°C
२
ERTG2NI ✽203
२
ERTG2NI ✽333
२
✽Resistance Tolerance Code:
G
H
J
K
±2 %
±3 %
±5 %
±10 %
Tolerance of “B value”: ±3 %
R25=Resistance at 25.0 °C
R50=Resistance at 50.0 °C
R85=Resistance at 85.0 °C
n (R /R )
k
n (R /R )
25
85
k
25
50
B(25 °C/50 °C)=
B(25 °C/85 °C)=
1/298.15–1/358.15
1/298.15–1/323.15
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.
Feb. 2006