MIL-PRF-914 Resistor Networks, Fixed, Film, Surface Mount, Nonestablished Reliability, And Established Reliability, General Specification ForThis specification covers the general requirements for nonestablished reliability \(non-ER\) and established reliability \(ER\), hermetically sealed \(see 3.27\) and nonhermetically sealed networks \(see 3.27.1\). These networks consist entirely of fixed, film resistors. They are primarily intended for use in surface mount applications where space is a major concern. ER resistors covered by this specification will have life failure rates \(FR\) ranging from 1 percent to 0.001 percent per 1,000 hours \(see 1.2.1.7\). The ER FR are established at a minimum 60-percent confidence level on the basis of life tests. Designers are CAUTIONED on using these resistors in pulse applications \(see 6.4.4\).

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MIL-PRF-914C

3.31.2 JAN and J marking. The United States Government has adopted, and is exercising legitimate control over

the certification marks "JAN" and "J", respectively, to indicate that items so marked or identified are manufactured to,

and meet all the requirement of specifications. Accordingly, items acquired to, and meeting all of the criteria specified

herein and in applicable specifications shall bear the certification mark "JAN", except that item too small to bear the

certification mark "JAN" shall bear the letter "J". The "JAN" or "J" shall be placed immediately before the part number

except that if such location would place a hardship on the manufacturer in connection with such marking, the "JAN" or

"J" may be located on the first line above or below the part number. Items furnished under contracts or orders which

either permit or require deviation from the conditions or requirements specified herein or in applicable specification

shall not bear "JAN" or "J". In the event item sample fails to meet the requirements of this specification and the

applicable specifications, the manufacturer shall remove completely the military part number and the "JAN" or the "J"

from the sample tested and also from all items represented by the sample. The "JAN" or "J" certification mark shall

not be used on products acquired to contractor drawing or specifications. The United States Government has

obtained Certificate of Registration No. 504,860 for the certification mark "JAN", and registration number 1,586,261

for the certification mark "J".

3.31.3 Supplying to lower resistance temperature characteristics and lower resistance tolerances or both. Networks

qualified and marked to lower resistance temperature characteristics or lower tolerance levels, or both, with acquiring

agency approval, are substitutable for networks marked to higher resistance temperature characteristics or higher

tolerance levels and shall not be remarked unless specified in the contract or order (see 6.2) (see table IX and table X).

TABLE IX. Resistance-temperature

characteristic substitution.

Characteristic

substitution

C, R

C, R, V

TABLE X. Resistance tolerance substitution.

Resistance

Resistance tolerance

tolerance

substitution

B, D

B, D, F

B, D, F, G

3.31.4 Termination material substitution. With procuring activity approval termination material G resistors are a

direct one-way substitute for termination material D resistors, provided all other characteristics are equal or better