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Storage and Operating Conditions

Suppression Components

Board Components

EMI Suppression Beads 1 & 3
Beads on Leads 4
PC Beads 4
Wound Beads 4
SM Beads (differential) 4
SM Beads (common) 4
Multi Aperture 1 & 3
Chip 5
Flex Sheets 6

Cable Components

Round Cable EMI Suppression Cores 1 & 3
Round Cable Snap-Its 2
Flat Cable EMI Suppression Cores 1
Flat Cable Snap-Its 2
Connector Plates 1
Miscellaneous 1 & 3
Flat Cable Core Clips N/A

Power and Inductive

Open Magnetic Circuit

Rods 7 & 8
Antenna Rods 7 & 8
Bobbins 7 & 8

Closed Magnetic Circuit

Toroids 7 & 8
Pot Cores 7
E Cores 7
EFD Cores 7
ETD Cores 7
EER Cores 7
Planar Cores 7
PQ Cores 7
RM Cores 7
U Cores 7

Ferrites cores are very robust when it comes to temperature, they cannot “physically” be changed unless the temperature goes above 1000ºC, they however can crack with fast temperature changes ( > 1ºC/sec.) : “Thermal Shock”. Curie temperature is a material specific characteristic, above which the ferrite loses its magnetic properties, once the temperature returns to below Curie the magnetic properties return.

1.)      For Suppression components that do not have plastic cases, coatings or conductors :

Storage Temperature : -55º to +125ºC

                Operating Temperature: -55º to +125ºC. performance typically derates per the  material specific Impedance vs. Temperature curves.

2.) For Suppression components associated with plastic cases

Storage Temperature : 0º to +85ºC

                Operating Temperature: 0º to +85ºC performance typically derates per the  material specific Impedance vs. Temperature curves. The constraint is the plastic cases, above +85ºC the plastic softens and can deform, below 0ºC. the plastic can become brittle and crack when opened and closed.

3.)  For Suppression components with conformal coatings

Storage Temperature :  -55º to +90ºC 

                Operating Temperature: -55º to +90ºC performance typically derates per the  material specific Impedance vs. Temperature curves. For thermo-set plastic coating (green or white)  above +105ºC the coating softens and can becomes tacky. For Parylene coating (transparent)  the suggested operating temperature range is  -55º to +90ºC 

4.) For Suppression components with conductors :

 Storage Temperature : -55º to +125ºC, RH < 55%, suggested shelf life is one year, solderability should be evaluated for longer periods.

                Operating Temperature: -55º to +125ºC. performance typically derates per the  material specific Impedance vs. Temperature curves. For the unisulated conductors as supplied by Fair-Rite there is no further constraint, for customer supplied conductors the operating constraint is dependent on the wire insulation temperature rating.

5.) For Multi Layer Chip Beads:

Storage Temperature :  -55º to +125ºC, RH < 55%, shelf life  is one year, solderability should be evaluated for longer periods. (-10º to +40ºC is recommended for maximizing shelf life)

                Operating Temperature: -55º to +125ºC.

6.) For Flexible Ferrite Sheets :

Storage Temperature : -40º to +85ºC, suggested shelf life is one year; however shelf life may be extended by storage at 22 – 25ºC and 45-55% RH avoiding light and dust.

                Operating Temperature: -40º to +85ºC performance typically derates per the  material specific Permeability vs. Temperature curves. The constraint is the PET film and Adhesive Tape layers

7.) For Inductive and Power components that do not have coatings or conductors :

Storage Temperature : -55º to +125ºC

                Operating Temperature: -55º to +125ºC. performance typically derates per the  material specific Permeabilty vs. Temperature or Power Loss vs. Temperature curves.

8.) For Inductive and Power components with conformal coatings

Storage Temperature : -55º to +90ºC

                Operating Temperature: -55º to +90ºCperformance typically derates per the  material specific Permeabilty vs. Temperature or Power Loss vs. Temperature curves. For thermo-set plastic coating (green or white)  above +105ºC the coating softens and can becomes tacky. For parylene coating (transparent)  the suggested operating temperature range is -55º to +90ºC.

9.) For Inductive and Power components with conductors :

Storage Temperature : -55º to +125ºC, RH < 55%, suggested shelf life is one year, solderability should be evaluated for longer periods.

                Operating Temperature: -55º to +125ºC. performance typically derates per the  material specific Permeabilty vs. Temperature or Power Loss vs. Temperature curves.  For customer supplied conductors the operating constraint is dependent on the wire insulation temperature rating.

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