Q-Tech CLASS B+ - Manual (Page 3)

Q-TECH Corporation - 10150 W. Jefferson Boulevard, Culver City 90232 - Tel: 310-836-7900 - Fax: 310-836-2157 - www.q-tech.com
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Q-TECH
CORPORATION
QPDS-0001, Rev L, June 2013 (ECO #10851)
CLASS B+ PRODUCTS
HIGH RELIABILITY HYBRID CRYSTAL CLOCK OSCILLATORS
2.5 to 5.0Vdc - 15kHz to 350MHz
3.5.1 Construction Technology. The device shall be constructed as a class 2-Type 1 hybrid oscillator of MIL-PRF-55310.
3.5.2 Workmanship. The device workmanship shall meet the requirements of MIL-PRF-55310.
3.5.3 Element Derating. All active and passive elements shall be derated in accordance with the applicable hybrid microcircuit
element requirements of MIL-STD-975. Elements shall not operate in excess of derated values.
3.5.4 Active Elements. The active component shall be derived from lots that meet the Element Evaluation requirements of
MIL-PRF-38534, Class K (for QT100 and QT200), and MIL-PRF-55310, Level B (QT300).
3.5.5 Quartz Crystal. Unless otherwise specified by the detail specification, the quartz crystal material for the QT100 and QT300
shall be swept synthetic, grade 2.2 or better and cultured quartz crystal for QT200.
3.5.6 Passive Elements. Element Evaluation shall be as a minimum in accordance with MIL-PRF-55310, Level S for QT100 and
Level B for QT200 And QT300.
3.5.7 Crystal Mounting. The crystal element shall be three-point minimum mounted in such a manner as to assure adequate crystal
performance when the oscillator is subjected to the environmental conditions specified herein.
3.5.8 Maximum Allowable Leak Rate. The maximum allowable leakage rate shall be as specified by MIL-STD-883, method 1014
based on the internal cavity volume. The hermetic seal (fine and gross leak) tests shall be in accordance with MIL-STD-883,
Method 1014.
3.5.9 Weight. The maximum weight of the crystal oscillator shall be defined on page 24.
3.5.10 Delta Criteria. The crystal oscillator shall meet the parameter delta criteria post burn-in called out in the detail specification.
The change in the parameter (delta) shall be calculated between the initial measurement and the present (interim or final)
measurement.
3.5.11 Marking. Each unit shall be permanently marked with the manufacturer's name or symbol, part number, frequency, lot date
code number, and serial number. The unit shall be marked with the outline of an equilateral triangle near pin 1 to show that it
contains devices which are sensitive to electrostatic discharge.
3.5.12 Traceability. Material, element and process traceability requirements shall be as specified by MIL-PRF-55310.
3.5.13 Rework Provisions. Rework shall be in accordance with the provisions of MIL-PRF-55310.
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QUALITY ASSURANCE PROVISIONS
4.1 Responsibility for Inspection. Unless otherwise specified in the contract or purchase order, the supplier shall be responsible for
the performance of all inspection requirements as specified. Customer reserves the right to perform any of the inspections set
forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed
requirements, and to return any product failing to meet the specified requirements.
4.2 Screening. Hybrid crystal oscillators shall have been subjected to and successfully passed all the screening tests as applicable
in Tables I, II, III, IV.
4.2.1 Nondestructive Bondpull. Not applicable in all ceramic packages due to size constraint and cavity height for crystal mount
clearance.
4.2.2 Percent Defective Allowable (PDA). The percent defective allowable shall be 2% or one device, whichever is greater. PDA
accountability shall be based on failures occurring during the second half of burn-in only. PDA shall be applicable to the
+25 ºC static parameters as specified in the delta criteria.
4.3 Quality Conformance Inspection (QCI). Shall be as outlined in the QCI section for each screening option here-in. All records
shall be traceable to the lot number and unit serial number. Samples used for Group A that pass all tests may be delivered on
contract prior to QCI completion.
GENERAL SPECIFICATION (Cont’d)