Document Number: 29005 For technical questions, contact: nlr@vishay.com www.vishay.com
Revision: 09-Apr-09 69
2381 675 2..../PTCSS..T....TE
Vishay BCcomponents
SMD 0805, PTC Thermistors for Over-Temperature Protection
FEATURES
•Well-defined protection temperature levels
•Very fast reaction time
•Accurate resistance for ease of circuit design
•Excellent long term behavior
•Small size and rugged
•UL approved according standard UL1434 (file: E148885)
•PTC thermistor with lead (Pb)-free terminations
•Compliant to RoHS directive 2002/95/EC and in
accordance to WEEE 2002/96/EC
APPLICATIONS
Over-temperature protection and control in:
•Industrial electronics
•Power supplies
•Electronic data processing
•Motor protection
•Electronic ballasts
•DC-to-DC convertors
DESCRIPTION
These directly heated thermistors have a positive
temperature coefficient and are primarily intended for
sensing.
Note
• Other sizes are available on request
QUICK REFERENCE DATA
PARAMETER VALUE UNIT
Resistance at 25 °C 470 ± 50 % Ω
Maximum resistance at - 40 °C 2500 Ω
Maximum resistance at (Tn - 5) °C 4700 Ω
Minimum resistance at (Tn + 5) °C 4700 Ω
Minimum resistance at (Tn + 15) °C 15 000 Ω
Maximum voltage 25 V
Dissipation factor ± 3.5 mW/K
Temperature range - 40 to (Tn+ 15) °C
Weight ± 0.015 g
Climatic category 40/125/56
NOMINAL WORKING TEMPERATURES AND ORDERING INFORMATION
CODE NUMBERS
2381 675....
Tn
(°C)
Rmax.
at Tn - 5 °C
(Ω)
Rmin.
at Tn + 5 °C
(Ω)
Rmin.
at Tn + 15 °C
(Ω)
20707 70 4700 4700 15 000
20807 80 4700 4700 15 000
20907 90 4700 4700 15 000
21007 100 4700 4700 15 000
21107 110 4700 4700 15 000
21207 120 4700 4700 15 000
21307 130 4700 4700 15 000
21407 140 4700 4700 15 000