Type YM Series
Thermometrics
PTC Thermistors
Description
Thermometrics YM Series consists of a range of
radially-wired PTC disc thermistors with silicone
resin coating.
Features
• Fast switching times
• 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
Applications
• Designed for general purpose over-current,
overvoltage and direct over-temperature
protection
Packaging
All types in the YM range are available loose-
packed, as shown in the drawing. Devices are also
available on bandolier (tape & reel): types with
diameter a <12 mm comply with IEC 286-2.
To identify the packaging required, replace N in
the product codes shown in table as follows:
YM
Bandoliered ......................................................R*
Loose-packed .................................................N
YQS
Bandoliered ...................................................Add T suffix
Pack quantities:
Loose-packed .........................................500-2500/box
Bandoliered :........................................ 375-1500/reel
*YM120D260N150
*YM120D370N100
Not available taped and reeled
Amphenol
Advanced Sensors
Electrical Specifications
Maximum Operating Voltage
265V rms
Switch Temperature
120°C nominal
Tolerance on R25
±20%
Ambient Temperature Range
At Storage: -25 to +155°C
At Maximum Voltage: 0 to +55°C
Lead Wire Material
Tin-coated copper
Body Coating
Silicone resin, black YM, green YQS
Part Number Replacement
for
R @ 25°C
Ω
Maximum Current
without Tripping
(Int)
mA
Minimum Trip
Current (It)
mA
Maximum
Overload
Current
(Imo)
A
Maximum
Residual
Current (Ires)
mA
D
(max)
mm
T
(max)
mm
H
(max)
mm
G
mm
T=25°C T=55°C T=25°C T=10°C
YM120C15N182 1800 16 14 23 28 0.1 5 4 5 8
YM120C20N122 1200 20 17 28 34 0.1 6 4 5 8
YQS8070 YM120C30N601 600 22 18 40 46 0.2 5 4.5 5 8
YQS8069 YM120C45N301 300 33 26 55 62 0.2 7 4.5 5 9
YQS8068 YM120C80N101 100 65 50 98 108 0.4 7 5.5 5 12
YQS8067 YM120D105N600 60 85 65 131 144 0.6 9 6 4.5 12
YM120D125N450 45 110 85 155 170 0.7 9 7 4.5 2 +0.5,-1
YQS8066 YM120D150N330 33 128 99 181 198 0.9 12 7.5 4.5 12
YM120D170N250 25 161 125 228 250 1.1 10 8.5 4.5 2 +0.5,-1
YQS8065 YM120D200N200 20 168 130 265 298 1.3 10 9.5 4.5 15
YM120D260N150 15 234 181 330 362 1.7 12 11.5 4.5 2 +0.5,-1
YM120D370N100 10 314 243 444 486 2.7 16 14.5 4.5 2 +0.5,-1
T (max)
30 min
D (max)
H
0.6+0.06/-0.05
5.08+0.6/-1.0
G
YM Drawing
YQS Drawing
0
.55-0.66 25 Min
5
±
1
AAS-920-627A-03/2014
© 2014 Amphenol Corporation. All Rights Reserved. Specifications are subject to change without notice.
Other company names and product names used in this document are the registered trademarks or
trademarks of their respective owners.
Amphenol
Advanced Sensors