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Quartz Crystal 38.880 MHz  AT HC-45/U 3rd overtone  CL 25pF Quartz Crystal 38.880 MHz  AT HC-45/U 3rd overtone  CL 25pF

Quartz Crystal 38.880 MHz AT HC-45/U 3rd overtone CL 25pF

Well documented and cost effective Quartz Crystal for OCXO applications.
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X38.880AT-45-M3-25AC

0pcs

Specification for Crystal Part # X38.880AT-45-M3-25AC


1. GENERAL

Item

Parameter

Condition

Value

 

Tolerance

Unit

Note

1.1

Angle of cut

 

AT

 

 

 

 

1.2

Mode of operation

Overtone

3rd

 

 

 

 

1.3

Circuit type

Series resonance

 

 

 

 

 

1.4a

Circuit type

Parallell resonance

 

 

 

 

 

1.4b

Load capacitance, CL

 

25

 

+/- 1

pF

 

1.5

Drive level, nom P

Nominal P

50

 

+/- 10 %

uW

 

1.6

Drive level, max P

Maximum P

 

 

+/- 10 %

uW

 

1.7

Package

HC-43/U

 

 

 

 

Height mm

Quartz Crystal 38.880 MHz  AT HC-45/U 3rd overtone  CL 25pF

2. TEMPERATURE CHARACTERISTICS

Item

Parameter

Condition

Min.

Typ.

Max.

Unit

Note

2.1

Reference temperature, ref T

 

+78

+83

+88

˚C

 

2.2

Operating temperature range

 

 

 

 

˚C

 

2.3

Storage temperature range

 

-55

 

+105

˚C

 

 

 

 

 

 

 

 

 

3. ELECTRICAL PARAMETERS

3.1

Motional resistance

R1

10

20

30

Ohm

 

3.2

Motional inductance

L1

 

1447

 

mH

 

3.2

Motional capacitance

C1

1.0

1.4

1.9

fF

 

3.3

Static shunt capacitance

C0

3.3

3.6

3.9

pF

 

3.4

Figure of merit

Q

150 000

200 000

350 000

-

 

3.5

Shunt inductance

L0

 

4.7

 

μH

Optional C0 cancellation

 

 

 

 

 

 

 

 

4. FREQUENCY CHARACTERISTICS

4.1

Nominal frequency

@ ref T, CL and nom P

 

38.880 000

 

MHz

 

4.2

Frequency accuracy

@ ref T, CL and nom P

-5.0

 

+5.0

ppm

 

4.3

Drive level dependency, R1(P)

R1 max / R1 min

 

 

10

%

DLD sweep from 0.1 uW — nom P

4.4

Drive level dependency, f1(P)

Δf / f nom

 

 

 

ppm

DLD Sweep from 0.1uW — nom P

4.5

Long term stability (aging)

First year

-500

 

+500

ppb

After 30 days of continues operation

4.6

Long term stability (aging)

After first year

 

 

 

ppb

After 30 days of continues operation

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