MIL-PRF-3098/68G
Inches
mm
Ltr
Min
Max
Min
Max
A
---
1.170
---
29.72
B
---
.460
11.68
C
---
1.125
---
28.58
D
.091
.095
2.31
2.41
E
.490
.510
12.45
12.95
F
---
.411
---
10.44
G
---
1.282
---
32.56
H
.625
.655
15.87
16.64
J
.568
.588
14.43
14.93
K
.123
.127
3.12
3.22
NOTES:
1. Dimensions are in inches.
2. Metric equivalents are given for general information only.
3. The pin undercut may be omitted.
4. Marking to be in accordance with MIL-PRF-3098.
FIGURE 1. Crystal unit - CR91/U - Continued.
REQUIREMENTS:
Dimensions, marking, and configuration: See figure 1.
Frequency range: 9.5 MHz to 12.5 MHz, inclusive. 1/
Mode of oscillation: Fundamental.
Rated drive level: 1.0 mW maximum.
Frequency tolerance (operating temperature range): 50 parts per million (ppm).
Equivalent resistance: 25 ohms, maximum.
Antiresonance, load capacitance: 55.0 pF 0.5 pF.
Shock (specified pulse):
Frequency change permitted: 5 ppm.
Equivalent resistance change permitted: 10 percent.
______
1/ In using equipment, these frequencies are multiplied to the 12th harmonic, which is also known as
aircraft frequency.
2
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