Datasheet > 142-18.0M-17-LP-TR

142-18.0M-17-LP-TR

更新时间： 2024-11-26 10:41:51

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OSCILENT		/
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描述
Parallel - Fundamental Quartz Crystal, 18MHz Nom, HC-49T, 2 PIN

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Oscilent Corporation | 141 - 142

Page 1 of 4

Quartz Crystals

Series Number

Package

Description

Last Modified

141 ~ 142

HC-49U / HC-49T

Weld Type Quartz

April. 17 2008

Quartz Crystal FEATURES

- Industry Standard Package

- Wide Frequency range

- Tight Tolerances

- Excellent reliability/Aging

- "AT" cut crystals

- Cost effective

- RoHs / Lead Free compliant

OPERATING CONDITIONS / ELECTRICAL CHARACTERISTICS

PARAMETERS

CONDITIONS

CHARACTERISTICS

UNITS

Frequency Range

Frequency Tolerance

Temperature Tolerance

1.800 ~ 100.00

MHz

PPM

Ref @ +25°C

±30 std. (±5 ~ ±100 avail.)

±50 std. (See Table 2)

Operating Temperature

Storage Temperature

Shunt Capacitance

Load Capacitance

-20 ~ +70 std. (See Table 2)

-55 ~ +125

°C

OPR

STG

7.0 max.

20.0 std. (8 ~ 50 and Series avail.)

Drive Level

0.05 ~ 1.0

±5.0 max.

Aging (First Year)

Insulation Resistance

@ +25°C

PPM/Y

Mohm

500 (DC100 ±10V) min.

TABLE 1 - MODE OF OSCILLATION AND EQUIVALENT SERIES RESISTANCE

FREQUENCY RANGE (MHz)

1.800 ~ 2.000

MODE

Fundamental

Fund. / 3rd OT

3rd Overtone

3rd / 5th Overtone

BT Fund.

HC-49T (ohm max.)

HC-49U (ohm max.)

600

450

350

150

2.000~ 2.400

2.400 ~ 3.000

3.000 ~ 3.500

3.500 ~ 4.000

150

4.000 ~ 7.000

7.000 ~ 10.000

10.000 ~ 15.000

15.000 ~ 20.000

20.000 ~ 25.000

25.000 ~ 30.000

30.000 ~ 75.000

75.000 ~ 100.000

27.000 ~ 35.000

25 / 60

25 / 40

25 / 50

25 / 40

- / 60

TABLE 2 - FREQUENCY - TEMPERATURE TOLERANCE

Tolerance (PPM)

12 3 4

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