MIL-PRF-49137 Capacitors, Fixed, Electrolytic \(Solid Electrolyte\), Tantalum, Molded, Conformal Coated And Metal Cased With Plastic End-Fill, Nonhermetically Sealed, General Specification ForThis specification covers the general requirements for fixed, electrolytic \(solid electrolyte\), tantalum, molded, conformal coated and metal cased with plastic end-fill nonhermetically sealed capacitors, primarily intended for filter, bypass, coupling, and other applications where the alternating current \(ac\) component is small compared to the direct current \(dc\) rated voltage. These capacitors are intended to be used only where supplemental moisture protection is provided or for noncritical applications where hermetic moisture protection is not required.

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MIL-PRF-49137E

4.6.1.4 Group B inspection. Group B inspection shall consist of the inspections specified in table VI in the order

shown, and shall be made on sample units which have been subjected to and have passed the group A inspection.

TABLE VI. Group B inspection.

Requirement

Test method

Sampling

Inspection

paragraph

procedure

Subgroup 1

8 samples

Stability at low and high

0 failures

temperatures

Subgroup 2

8 samples

Surge voltage

0 failures

4.6.1.4.1 Sampling plan. The sampling plan shall be as specified in table VI.

4.6.1.4.2 Rejected lots. The rejected lot shall be segregated from new lots which have passed inspection. The

contractor may rework the lot to correct the defects, or screen out the defective units, and resubmit for inspection in

accordance with table VI. A new sample of parts shall then be randomly selected in accordance with table VI. If one

or more defects are found in this second sample, the lot shall be rejected and shall not be supplied to this

specification.

4.6.1.4.3 Disposition of sample units. Sample units which have been subjected to group B, subgroup 2 inspection

shall not be delivered on the contract.

4.7 Periodic group C inspection. Group C inspection shall consist of the tests specified in table VII, in the order

shown. Group C inspection shall be made on sample units selected from lots which have passed group A and group

B inspection. Group C samples shall be representative of production. The allowable number of defectives shall be

as indicated in table VII. Except where the results of periodic inspection show noncompliance with the applicable

requirements (see 4.7.2), delivery of products which have passed group A and group B inspections shall not be

delayed pending the results of this periodic inspection

4.7.1 Sampling plan. Sixty-seven sample units of each style shall be selected from the first lot produced, and

thereafter from each production of 500,000 units or once every 3 months, whichever occurs first. The 67 sample

units shall be subdivided as specified for each subgroup in table VII.

4.7.1.1 Disposition of sample units. Sample units that have been subjected to group C inspection shall not be

delivered on the contract.