High Reliability "CR" Capacitors
(Tested similarly to MIL-PRF-55681 Group A)
For applications that require a high level of reliability, Presidio recommends its high reliability “CR”
capacitors. Tested similarly to MIL-PRF-55681 Group A, Presidio manufactures these chips on the
same manufacturing line as its military product line. They may be used in both military and space
applications. Please note these capacitors are NOT MIL-qualified.
Quality Assurance Provisions
Every lot undergoes the following inspection and tests:
•
Destructive Physical Analysis (DPA): A 32-piece sample is pulled from each lot and
examined per relevant sections of EIA 469 and to verify adherence to Presidio’s internal
design criteria.
•
Voltage Conditioning: All parts receive a voltage conditioning at 2X rated voltage and
125°C for 100 hours. An accelerated voltage conditioning, following MIL-PRF-55681
guidelines, may be used at Presidio’s discretion.
•
Capacitance: All parts are tested at 25°C and 1VACRMS in accordance with method 305 of
MIL-STD-202.
•
Dissipation Factor (DF):
Voltage Rating
NPO
16 / 25
.15%
≥ 50
.15%
BX
2.5%
2.5%
X7R
3.5%
2.5%
•
Dielectric Withstanding Voltage (DWV): All parts are tested at 2.5X rated voltage in
accordance with Method 301 of MIL-STD-202, or according to EIA/MIL Standards.
•
Insulation Resistance (IR @ 25°C): All parts are tested at 25°C and rated voltage in
accordance with Method 302 of MIL-STD-202. The minimum IR required is 100,000
megohms or 1,000 megohm-microfarads.
•
Percent Defective Allowed (PDA): The cumulative PDA after voltage conditioning is 8%.
Pieces rejected as out of tolerance for capacitance or visual screening will be removed from
the lot but not counted in the PDA calculation.
•
Visual: Performed on pieces in accordance with Presidio internal workmanship criteria.
•
Mechanical: Level 1 AQL 1% in accordance with Presidio's catalog.
•
Class H Element Evaluation (optional): A MIL-PRF-38534 Appendix C Passive Element
Class H element evaluation is available where the customer requires this testing. Element
evaluation is not required on each lot, and must be specified on the purchase order.
•
Operating Temperature Range: -55°C to +125°C
Standard Packaging
Product will be packaged in individual waffle trays.
Data Package
Data will be sent with each shipment including:
•
Destructive Physical Analysis Report (optional): Destructive Physical Analysis (DPA)
report and photographs for each lot. Extra charge may apply.
•
Certificate of Compliance: A Certificate of Compliance will be sent with each shipment.
•
Class H Element Evaluation: If a Class H element evaluation is required, all variables
test data for subgroup 3 tests will be included in the data package.
7169 Construction Court, San Diego, CA 92121 USA • Tel: 858-578-9390 • Fax: 800-538-3880 or 858-578-6225
Web: www.presidiocomponents.com • Email: info@presidiocomponents.com
