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OS-68338 Datasheet(PDF) 7 Page - Vectron International, Inc
VECTRON [Vectron International, Inc]
OS-68338 Datasheet(HTML) 7 Page - Vectron International, Inc
/ 22 page
CODE IDENT NO.
a. Design Pedigree (choose one as the 5
character in the part number):
(E) Enhanced Element Evaluation, 100krad Class S die, Premium Q Swept Quartz
(R) Hi-Rel design w/ 100krad Class S die, Premium Q Swept Quartz
(V) Hi-Rel design w/ 100krad Class S die, Cultured Quartz
(X) Hi-Rel design w/ Cultured Quartz, Class S die
(B) Hi-Rel design w/ Swept Quartz, Class B die
(C) Hi-Rel design w/ Cultured Quartz, Class B die
(D) Hi-Rel design w/ Cultured Quartz and commercial grade components
b. Input Voltage, (A) for 5.0V, (B) for 3.3V as the 14
c. Frequency-Temperature Slew Test
d. Radiographic Inspection
e. Group C Inspection: MIL-PRF-55310 (requires 8 pc. sample)
f. Group C Inspection: MIL-PRF-38534 (requires 8 pc. sample – 5 pc. Life, 3 pc. RGA)
g. Internal Water-Vapor Content (RGA) samples and test performance
h. MTBF Reliability Calculations
i. Worst Case/Derating Analysis
j. Deliverable Process Identification Documentation (PID)
k. Customer Source Inspection (pre-cap / final)
Test Conditions. Unless otherwise stated herein, inspections are performed in accordance with
those specified in MIL-PRF-55310 and MIL-PRF-38534, in that order. Process travelers
identify the applicable methods, conditions and procedures to be used. Examples of electrical
test procedures that correspond to MIL-PRF-55310 requirements are shown in Table 3.
Special Tests and Descriptions.
Frequency-Temperature Slew. Frequency-Temperature Slew Test has been developed as an
indicator of higher than normal internal water vapor content. The incremental temperature
sweep from +125°C to -55°C and back to +125°C records output frequency fluctuations
emulating the mass loading of moisture deposited on the crystal blank surface. Though not
replacing a customer’s internal water-vapor content (RGA) requirement, confidence is
increased without destructively testing otherwise good devices.
Burn-in Delta Frequency Aging (in Option D). The frequency measurement for burn-in delta
measurements is performed at the crystal’s upper turning point temperature where its effects on
repeatable frequency accuracy are maximized. Dependent on the crystal specified, this
temperature is typically between +65°C and +85°C, ±0.2°C.
Deliverable Data. The manufacturer supplies the following data, as a minimum, with each lot
a. Completed assembly and screening lot travelers, including rework history.
b. Electrical test variables data, identified by unique serial number.
c. Frequency-Temperature Slew plots, Radiographic films, Group C data and RGA data as
required by purchase order.
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