electromagnetic interference. Filters furnished to the requirements of this specification contain shunting ceramic discoidal capacitors and series inductors \(FSC 5915\). Capacitors furnished to the requirements of this specification contain shunting ceramic discoidal capacitors \(FSC 5910\). For the purposes of this specification, feed-through capacitor types \(C circuit configuration\) are referred to herein as a filter. Passband power may be alternating current \(ac\) or direct current \(dc\) and the filters used primarily in the reduction of broadband radio frequency interference. This specification provides for two levels of product assurance requirements. Filters covered by this specification are capable of operation over the temperature range of -55 degrees C to +125 degrees C.

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MIL-PRF-28861D

3.30 Solderability.

3.30.1 Solderability of terminals. When filters are tested as specified in 4.6.25.1, the dipped surface of the

terminals shall be at least 95 percent covered with continuous solder coating. The remaining 5 percent of the

terminal surface may show only small pinholes or voids and these shall not be concentrated in one area. Bare base

metal and areas where the solder dip fails to cover the original coating are indications of poor solderability, and shall

be cause for rejection.

3.30.2 Solderability of mounting termination (when applicable). When filters are tested as specified in 4.6.25.2,

the joint shall be at least 95 percent covered with continuous solder coating. There shall be no evidence of leaching

(loss of metallization). After the test, filters shall meet the following requirements:

Insulation resistance (+25�C): Shall meet initial requirements (see 3.1).

Capacitance: Shall meet initial requirements (see 3.1).

Dissipation factor: Shall meet initial requirements (see 3.1).

3.31 Life. When filters are tested as specified in 4.6.26, filters shall meet the following requirements:

Visual inspection: There shall be no evidence of breakdown, flashover, or other physical damage, and

marking shall remain legible.

Dielectric withstanding voltage: As specified in 3.8.

Insulation resistance (+125�C and +25�C): Shall meet initial requirements (see 3.1).

Insertion loss: Shall meet initial requirements (see 3.1).

3.32 Flashpoint of impregnant or potting compound. The manufacturer shall certify that the flashpoint of the

impregnant or potting compound are not lower than 165�C, or shall perform the test specified in 4.6.27.

3.33 Marking.

3.33.1 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 requirements of military specifications. Accordingly, items acquired to, and meeting all of the criteria

specified herein and in applicable detail specifications shall bear the certification mark "JAN" except that items 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 detail specifications shall not bear "JAN" or "J". In the event an item fails to meet the requirements of

this specification and the applicable specification sheets or detail specifications, the manufacturer shall remove 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 drawings or specifications. The United States

Government has obtained Certificate of Registration No. 504,860 for the certification mark "JAN".

3.33.2 Full marking. Each filter shall be marked in accordance with method I of MIL-STD-1285 with the following

information:

a. JAN marking.

b. PIN.

c. Manufacturer's source code.

d. Date code and lot symbol.