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SDF Series Datasheet

Cantherm

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Datasheet

SDF
Thermal Cut-Offs
Operating Principle
SDF
Our Thermal Cut-Offs
(Organic Thermal Element Type) are
used to prevent fires caused by abnormal heat generation from
circuits and other heat producing electrical products. They are
a non-resettable thermal fuse which open electrical contacts
when temperatures exceed the specified level.
• Electric home appliances and heating devices
• Coil-winding products and power supplies
• Office equipment and telecommunication devices
Automobiles & other electronic components
When the ambient temperature rises to the functioning
temperature, the thermal element melts and the springs move
the contact away and open the circuit permanently.
• Bends in leads should be at least 3mm from the
body of the TCO.
• Extreme caution must be used while soldering,
use a heatsink and avoid heating above Tf -24°C.
• The metal portion of the TCO is electrically live
and may require insulation.
• Do not use in liquids or poisonous gasses such as
sulfuric acid or nitrous oxide.
• Do not connect heater directly to the cutoff.
UL & cUL: E117626
VDE: 115369, 116219
PSE: JET2926-32001-1001-1009
CCC: 2003010205079617
EK: HH05009-2004A-2019A
Applications
Cautions
Approvals
Dimensions
Type A (L1) B (L2)
Standard 25.4 35.0
Long 35.0 35.0
Option Custom made Custom made
EU DIRECTIVE 2011/65/EU
(RoHS II)
OAPPROVED
APPLIED FOR
TOLERANCE: +0ºC, -5ºC
Rated Voltage
& Current Max.
EK 250V/15A
UL/cUL
125V/15A
250V/10A
250V/16A
VDE 250V/15A
PSE 125V/15A
250V/15A
CCC 250V/15A
Part No. UL/cUL VDE CCC PSE TF (ºC) TH (ºC)
O O O O 66 42
O O O O 72 50
O O O O 77 55
O O O O 84 60
O O O O 91 67
O O O O 9876
O O O O 100 78
O O O O 104 80
O O O O 110 86
– – 115 95
O O O O 119 95
– – 121 95
O O O O 128 106
– – 132110
O – O 139 117
O O O O 141 117
O O O O 144 120
O O O O 152 128
O O O O 167 142
– O 169 145
O O O O 170 146
– O 179 155
O O O O 184 160
O O O O 192 162
-- ---- ----
-- ---- ----
O O O 216 191
– O 222 195
O O O O 228 193
O O O O 240 200
O260 220
DF66S
DF72S
DF77S
DF84S
DF91S
DF98S
DF100S
DF104S
DF110S
DF115S
DF119S
DF121S
DF128S
DF132S
DF139S
DF141S
DF144S
DF152S
DF167S
DF169S
DF170S
DF179S
DF184S
DF192S
-----------
-----------
DF216S
DF222S
DF228S
DF240S
DF260S
DF280S -- O280 230
TF = Functioning Temperature TH = Holding Temperature
8415 Mountain Sights Avenue • Montreal (Quebec), H4P 2B8, Canada
Tel: (514) 739-3274 • 1-800-561-7207 • Fax: (514) 739-2902 • E-mail: sales@cantherm.com
Website: www.cantherm.com | Division of Microtherm 2016/June SDF
Determine the Proper Series
Safe Temperature Range
• Tp : The highest temperature of the product to which a
cutoff is to be attached.
• Th : The safe temperature range for use of the cutoff.
• Ts : 24ºC (Tp-Th) (Apply 35ºC for Ts value when Tp is
higher than 170ºC.)
• To : The heating temperature caused by electrical load
(Please refer temperature / current correlation curve)
• +a :
1. Self heating of lead wire
2. Structure of ventilation or airtightness
3. Location of connecting terminal
4. Thicknes of insulated covering material
5. Best condition value considering electric voltage changes
Tp + Ts + To +a = Applicable Temperature
• The increasing temperature by remaining heat in the cutoff after melting is required to remain below Tm.
• The temperature of the area where a cutoff will be attached should not reach over Th under normal usage conditions.

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