Part Number B251-10-4

Quartz Crystal Unit

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Part Number
DEMIL
Shelf Life
UOM
NIIN
Part:
b251-10-4
Demil:
No
Shelf Life:
UOM:
NIIN:
008120971
NSN
National Stock Number:
5955-00-812-0971 5955008120971
TXT
Description:
Quartz Crystal Unit
INC
INC
Item Name Code:
00196
MRC:
The dimension measured along the longitudinal axis with terminated points at the extreme ends of the item.ABHP
Overall Length:
0.780 inches
MRC:
A measurement of the longest dimension of a terminal,in distinction from width.ABJT
Terminal Length:
0.250 inches
MRC:
An overall measurement taken at right angles to the length of an item,in distinction from thickness.ABMK
Overall Width:
0.435 inches
MRC:
A measurement of the longest dimension of the body,in distinction from width.ADAQ
Body Length:
0.530 inches
MRC:
A measurement taken at right angles to the length of the body,in distinction from thickness.ADAT
Body Width:
0.402 inches
MRC:
A measurement of the smallest dimension of a body,in distinction from length or width.ADPR
Body Thickness:
0.150 inches
MRC:
An overall measurement of the smallest dimension of an item,in distinction from length or width.ADUM
Overall Thickness:
0.183 inches
MRC:
The length of a straight line which passes through the center of a terminal,and terminates at the circumference.AEBT
Terminal Diameter:
Between 0.038 inches and 0.042 inches
MRC:
The mode of frequency at which the device is designed to operate.AEHC
Mode Of Oscillation:
Third overtone and fifth overtone
MRC:
The condition existing when the frequency or vibration equals the natural frequency.AEHD
Circuit Resonance:
Series resonance
MRC:
The frequency at which the item is designed to operate under specified conditions.AEHG
Specified Frequency:
49.583333 megahertz
MRC:
The element,compound,or mixture of which the holder cover is fabricated.AEHS
Holder Cover Material:
Metal or glass
MRC:
None.CQBK
Center To Center Distance Between Terminals:
0.184 mils and 0.200 centimeters
MRC:
The drive level at which the item is designed to operate.CQYL
Drive Level Rating:
Between 2.0 milliwatts and 1.0 milliwatts and 2.4 milliwatts
MRC:
The permissible frequency deviation within the operating temperature range,expressed in percent.CRFX
Frequency Tolerance For Operating Tempurature In Percent:
-0.005/+0.005 and -0.0010/+0.0010
MRC:
The equivalent (effective) resistance for which the item is rated,expressed in ohms.CRMP
Equivalent Resistance Value In Ohms:
30.0
MRC:
The style designation indicating the configuration that most nearly corresponds to the appearance of the item.STYL
Style Designator:
Tube body, wire leads

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