MIL-PRF-123 Capacitors, Fixed, Ceramic Dielectric, \(Temperature Stable And General Purpose\), High Reliability, General Specification ForThis specification covers the general requirements for high reliability, general purpose \(BX and BR\) and temperature stable \(BP and BG\) ceramic dielectric fixed capacitors, leaded and nonleaded for space, missile, and other high reliability applications. Capacitors covered by this specification may be used in critical frequency determining applications, timing circuits, and other applications where absolute stability is required \(BP and BG\), and in applications where appreciable variations in capacitance with respect to temperature, voltage, frequency, and life can be tolerated \(BX and BR\). Life tests in this specification are performed at two times rated voltage at maximum rated temperature, and an assumed acceleration factor of 8:1 is used to relate life test data obtained at two times rated voltage to performance at rated voltage.

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MIL-PRF-123D

4. VERIFICATION

4.1 Classification of inspections. The inspections specified herein are classified as follows:

a. Qualification inspection (see 4.4).

b. In-process inspection (see 4.5.1).

c. Quality conformance inspection (see 4.5.2 and 4.5.3).

4.2 QPL system. The manufacturer shall establish and maintain a QPL system in accordance with 3.3. Evidence

of such compliance is a prerequisite for qualification and retention of qualification.

4.2.1 Purchased raw materials. The following documentation for purchased raw materials shall be retained:

a. Procurement documentation: Traceability.

b. Physical and chemical property data.

c. Performance evaluation/characterization data.

4.2.2 In-house prepared materials. The following documentation for in-house prepared materials shall be

retained:

a. Fabrication process control data.

b. Physical and chemical property data.

c. Performance evaluation/characterization data.

4.2.3 Manufacturing lot performance information. Lot performance information relating to material, process, lot

conformance, inspections, and product shall be retained by the manufacturer for 10 years from the date of the

manufacture of the parts.

4.3 Inspection conditions and reference measurements.

4.3.1 Conditions. Unless otherwise specified herein, all inspections shall be performed in accordance with the

test conditions specified in the "GENERAL REQUIREMENTS" of MIL-STD-202, except relative humidity shall not

exceed 75 percent. Accuracy of all test voltage measurements shall be within �2.0 percent of the specified voltage.

All test temperatures above 25�C shall have a tolerance of +4�C, -0�C unless otherwise specified herein.

4.3.2 Reference measurements. When requirements are based on comparative measurements made before and

after conditioning, the reference measurement shall be considered the last measurement made at +25�C �3�C prior

to conditioning. Unless reference measurements have been made within 30 days prior to the beginning of

conditioning, they shall be repeated.

4.3.3 Power supply. The power supply used for life testing shall have a regulation of �2 percent or less of the

specified test voltage.