1) These parts are suitable for Level 2 applications.  However, they may be used in Level 1 applications if they meet the Class S requirements of MIL-STD-981.

2)  The epoxy coated coils of MIL-PRF-83446/4 are sensitive to operation at or near the maximum operating temperature of 125°C.  It is suggested that these coils be restricted in application to a temperature of 105°C maximum.