DESCRIPTION:
A range of radially-wired PTC disc thermistors with
black silicone resin coating.
FEATURES:
•Designed for general purpose over-current, over-
voltage and direct over-temperature protection
•Operation up to 265V rms
•Wide range of operating current levels
•Excellent stability
•Fail-safe operation
•Solid state
•High performance barium titanate ceramic
•Suitable for automatic PCB insertion
OPTIONS:
•Non-standard resistances and tolerances
•Resistance matching
•Non-standard wire lengths
•Other wire configurations
PACKAGING:
All types in the YM120 range are available loose-
packed, as shown in the drawing. Devices are also
available on bandolier (tape & reel): types with
diameter a <14.5mm comply with IEC 286-2.
To identify the packaging required, replace X in the
product codes shown in table as follows:
Bandoliered ......................................................R
Loose-packed ...................................................N
Pack quantities:
Loose-packed .........................................500/box
Bandoliered
a<14.5mm ........................1000/reel (0.5" pitch)
a ≥14.5mm ............................500/reel (1" pitch)
DIMENSIONS:
Crown Industrial Estate, Priorswood Road 808 US Highway 1 967 Windfall Road
Taunton, Somerset TA2 8QY UK Edison, New Jersey 08817-4695 USA St. Marys, Pennsylvania 15857-3397 USA
Tel +44 (0) 1823 335200 Tel +1 (732) 287 2870 Tel +1 (814) 834 9140
Fax +44 (0) 1823 332637 Fax +1 (732) 287 8847 Fax +1 (814) 781 7969
DATA:
Maximum operating voltage ..............265V rms
Switch temperature....................120°C nominal
Tolerance on R
25
.....................................±20%
Ambient temperature range:
at maximum voltage........................0 to +55°C
at zero voltage ...........................-25 to +155°C
Lead wire material.............Solder-coated copper
Body coating .................................Silicone resin
PTC THERMISTORS: TYPE YM120
OVER-CURRENT PROTECTION
g
Crown Industrial Estate, Priorswood Road 808 US Highway 1 967 Windfall Road
Taunton, Somerset TA2 8QY UK Edison, New Jersey 08817-4695 USA St. Marys, Pennsylvania 15857-3397 USA
Tel +44 (0) 1823 335200 Tel +1 (732) 287 2870 Tel +1 (814) 834 9140
Fax +44 (0) 1823 332637 Fax +1 (732) 287 8847 Fax +1 (814) 781 7969
4.5
4.5
4.5
4.5
4.5
4.5
4.5
4.5
4.5
4.5
4.5
4.5
4.5
4.5
R
25
Resistance at 25°C
I
nt
Maximum current without tripping (25°C ambient)
I
t
Minimum trip current (25°C ambient)
I
mo
Maximum overload current
I
r
Residual current (25°C ambient)
D
E
F
G
H
I
J
bTh 450
bTh 330
bTh 250
bTh 200
bTh 150
bTh 100
bTh 060
4.0
4.0
4.0
4.0
4.0
4.5
6.0
7.0
7.5
8.5
9.5
11.5
14.5
17.5
5
6
6
7
7
8
8
9
9
10
11
12
16
25
0.1
0.1
0.2
0.2
0.2
0.4
0.6
0.7
0.9
1.1
1.3
1.7
2.7
3.9
0.023
0.028
0.040
0.055
0.080
0.098
0.131
0.155
0.181
0.228
0.265
0.330
0.444
0.575
0.016
0.020
0.028
0.039
0.057
0.070
0.093
0.110
0.128
0.161
0.192
0.234
0.314
0.407
1800
1200
600
300
150
100
60
45
33
25
20
15
10
6
YM120C15X182
YM120C20X122
YM120C30X601
YM120C45X301
YM120C60X151
YM120C80X101
YM120D105X600
YM120D125X450
YM120D150X330
YM120D170X250
YM120D200X200
YM120D260X150
YM120D370X100
YM120D480X060
Brand code
a
mm
I
r
mA
I
mo
A
I
t
A
I
nt
A
R
25
Ω
Code
PTC THERMISTORS: TYPE YM120
OVER-CURRENT PROTECTION
b
mm
g
