MIL-PRF-39003/10D
Qualification Conformance Inspection.
A manufacturer shall be considered qualified for CSS style capacitors if they qualify to the B or C, as
applicable, or better failure level of MIL-PRF-39003 for the equivalent CSR style capacitors.
Inspection lot. An inspection lot shall consist of all the capacitors of a single nominal capacitance/voltage
rating of one design. It shall be processed as a single lot through manufacturing steps on the same
equipment, to the same revisions of the manufacturer's documentation, and identified with the same date
and lot code designation. In addition, the lot shall conform to the following:
a. Tantalum powder, and tantalum wire shall be traceable to the same raw material lot batch and be
from the same supplier.
b. Production lot numbers shall provide traceability to the anode pressing batch.
c.
The anode pressing batch shall be pressed within a 24 hour period on the same pressing machine.
Further, it shall be sintered as a complete batch.
d. The entire inspection/production lot shall be voltage formed (same time and tank), impregnated, and
otherwise processed through final sealing as a complete batch, with all parts receiving the same
processing.
e. Traceability to the operator and the date each operation was performed shall be maintained.
f.
Lot identity shall be maintained from the time the lot is assembled.
g. Lot date code shall be assigned at formation of dielectric (Ta205).
h. Traceability and documentation shall be maintained for a minimum of ten years.
Rework: Rework is not allowed on any operation except for marking, sleeving, and lead rework.
Inspection of product for delivery. Inspection of product for delivery shall consist of Group A inspection.
Group A inspection. Group A inspection shall consist of inspection specified in table III in the order listed;
Exception: X-ray may be performed at any point in the sequence. Failure to meet the applicable percent
defective allowable (PDA) per table III, shall be cause for lot rejection. Summary of Group A data shall be
forwarded to purchaser with parts.
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