Littelfuse 16R Series - Manual (Page 3)

POLY-FUSE ® Resettable PTCs
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 10/17/13
Radial Leaded > 16R Series
Environmental Specifications
Operating/Storage
Temperature
-40°C to +85°C
Maximum Device Surface
Temperature in Tripped State
125°C
Passive Aging
+85°C, 1000 hours
-/+ 5% typical resistance
change
Humidity Aging
+85°C, 85% R.H., 1000 hours
-/+ 5% typical resistance
change
Thermal Shock
+85°C to -40°C 10 times
-/+ 5% typical resistance
change
Solvent Resistance
MIL–STD–202, Method 215F
No change
Moisture Resistance Level Level 1, J–STD–020C
Physical Specifications
Lead Material
2.5A: Tin-plated Copper clad Steel
3.0 - 14.0A: Tin-plated Copper
Soldering
Characteristics Solderability per MIL–STD–202,
Method 208E
Insulating Material
Cured, flame retardant epoxy polymer
meets UL94V-0 requirements.
Device Labeling
Marked with ‘LF’, voltage, current rating,
and date code.
Soldering Parameters - Wave Soldering
Pre-Heating Zone
Refer to the condition recommended by
the flux manufacturer.
Max. ramping rate should not exceed 4°C/
Sec.
Soldering Zone
Max. solder temperature should not
exceed 260°C
Time within 5°C of actual Max. solder
temperature within 3 – 5 seconds
Total time from 25°C room to Max. solder
temperature within 5 minutes including
Pre-Heating time
Cooling Zone
Cooling by natural convection in air.
Max. ramping down rate should not
exceed 6°C/Sec.
Preheating
100
125
255
260
25
5 max.
Temperature(°C)
Soldering Cooling
60 - 180
Time(s)