MIL-PRF-3098/55G
Inches
mm
Ltr
Min
Max
Min
Max
A
---
.435
---
11.05
B
---
.183
---
4.65
C
---
.402
---
10.21
D
.027
.032
0.68
0.81
E
.184
.200
4.67
5.08
F
---
.150
---
3.81
G
---
.530
---
13.46
H
.223
.248
5.66
6.30
J
.015
.025
0.38
0.63
K
.165
.175
4.19
4.44
L
.038
.042
0.96
1.07
NOTES:
1. Dimensions are in inches.
2. Metric equivalents are given for general information only.
3. Marking to be in accordance with MIL-PRF-3098.
4. The pin undercut may be omitted.
FIGURE 1. Crystal unit - CR77/U - Continued.
REQUIREMENTS:
Dimensions, marking, and configuration: See figure 1.
Frequency range: 17.0 MHz to 62.0 MHz, inclusive.
Capacitance, shunt: 7pF, maximum.
Frequency tolerances:
Primary operating temperature range: 20 parts per million (ppm).
Secondary operating temperature range: 30 ppm.
Equivalent resistance: 40 ohms, maximum.
Mode of oscillation: Third mechanical overtone.
Drive level, rated: 1.0 mW maximum.
Resonance: Series.
Operating temperature ranges:
Primary: -40C to +90C, inclusive.
Secondary: -55C to -40C, and +90C to +105C, inclusive.
2
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