Option s (pg 7-8), Modified, Mil-prf-38534 – Q-Tech CLASS B+ User Manual
Page 7: Class k, See details in, Table i, Q-tech, Class b+ products
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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
Screening - Option S (Modified MIL-PRF-38534, Class K)
Table I
(Example: QT178LD10S-50.000MHz)
NOTES:
1. PIND testing shall be performed using five (5) independent passes and all failures found at the end of each pass are rejected. The
survivors of the last pass are acceptable.
2. Normally frequency aging is up 30 days. However, aging may be ceased if value at 15 days is half than the limit of 30-day aging
value, or continued up to 90 days if value exeeds 30 day aging limit.
Tests
Parameters
Symbol
Delta Limits
Burn-In # 2
Supply current
Icc
±10% of initial reading
Life Test after 1,000 hours at +125°C
Supply current
Icc (Life)
±10% of initial reading
Frequency Aging after 30 days at +70°C
Output Frequency
Fo
Refer to detail spec.
Table I-a
Delta Limits
Test Description
MIL
Standard Method Condition
Qty
Comments
Non Destructive Bond Pull
883
2023
100%
Except on ceramic packages
Internal Visual
883
2017
Class H
100%
Stabilization Bake
883
1008
C
100%
48 hours at +150°C
Temperature Cycling
883
1010
C
100%
10 cycles
Constant Acceleration
883
2001
A
100%
Y1 direction only (5,000g’s)
Particle Impact Noise Detection (PIND)
883
2020
B
100%
5 passes minimum
(See Note 1)
Pre Burn-In Electrical
Refer to Table I-b and Detail Specification
100%
Burn-In # 1
883
1015
+125°C
for 160 hours
100%
With load and nominal supply voltage
Interim Electrical
Refer to Table I-b and Detail Specification
100%
Burn-In # 2
883
1015
+125°C
for 160 hours
100%
With load and nominal supply voltage
Final Electrical
Refer to Table I-a, I-b and Detail Specification 100%
Percent Defective Allowance (PDA)
38534
Refer to table 1-a
below
PDA=2% (Supply Current only)
Seal Fine Leak
883
1014
A1
100%
Seal Gross Leak
883
1014
C
100%
Radiographic Inspection
883
2012
Class S
100%
Frequency Aging 30 days
55310
+70°C±3°C
Refer to Table I-a
below
100%
±1.5ppm max. for F≤150MHz
±2ppm max. for >150MHz < F ≤ 200MHz
±2.5ppm max. for F > 200MHz
(See Note 2)
External Visual
883
2009
100%