Joyous Crystal

Z49US Series Microprocessor Crystal Units


Electrical Specifications

Parameter Specification
Frequency Range 3.500MHz to 70.000MHz
Frequency Tolerance/Stability

±15ppm at 25°C / ±30ppm Over Operating Temperature
±30ppm at 25°C / ±50ppm Over Operating Temperature
±50ppm at 25°C / ±100ppm Over Operating Temperature
±50ppm at 25°C / ±50ppm Over Operating Temperature

Drive Level

1mWatt Maximum

Load Capacitance 12pF to 50pF or Series
Shunt Capacitance 7pF Maximum
Operating Temperature Range 0°C to +70°C or -20°C to +70°C
Mode of Operation

Fundamental from 3.5MHz to 36MHz
Third Overtone from 25MHz to 70MHz


Equivalent Series Resistance

Frequency
(MHz)

Maximum ESR
(Ohms)
Mode of Operation
3.500 - 4.999 220 Fundamental
5.000 - 7.999 160 Fundamental
8.000 - 9.999 100 Fundamental
10.000 - 15.999 75 Fundamental
16.000 - 23.999 55 Fundamental
24.000 - 36.000 45 Fundamental
25.000 - 29.999 165 Third Overtone
30.000 - 70.000 90 Third Overtone

Mechanical Dimensions

14 Pin DIP Oscillator

All Dimensions in Millimeters


Part Numbering Guide

Z49US 1 A 18 C - 20.000 M - CL100
                  Value Added Options
CL100 = Cut Leads to 2.540mm
CL125 = Cut Leads to 3.175mm
CL150 = Cut Leads to 3.810mm
CL175 = Cut Leads to 4.445mm
CL200 = Cut Leads to 5.080mm
CL225 = Cut Leads to 5.715mm
CL250 = Cut Leads to 6.350mm
CL275 = Cut Leads to 6.985mm
CL300 = Cut Leads to 5.715mm
CL325 = Cut Leads to 8.255mm
CL350 = Cut Leads to 8.890mm
CL375 = Cut Leads to 9.525mm
CL400 = Cut Leads to 10.160mm
I = Insulator Tab
Value Added Options Prefix
M = MHz
Frequency Unit of Measure
M = MHz
Frequency
Entire Frequency with Decimal
Frequency Prefix
Frequency Tolerance / Stability
A = ±15ppm / ±30ppm
B = ±30ppm / ±50ppm
C = ±50ppm / ±100ppm
D = ±50ppm / ±50ppm
Load Capacitance
XX = XXpF
SR = Series
Operating Temperature Range
A = 0°C to +70°C
B = -20°C to +70°C
Mode of Operation
1 = Fundamental
3 = Third Overtone
Series
Z49US = HC-49/US

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