UM1 CRYSTALS
Outline in mm (inches) - UM1 & UM1-3L
ISSUE 8; 15 JUNE 1998
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Delivery Options
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Common frequencies are available from stock. Please
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see p4 for details
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3 day Express Manufacturing Service, subject to piece
part stock availability
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Holder Style
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UM1 crystals are resistance welded, hermetically
sealed in an inert atmosphere with glass to metal seals
securing the lead wires
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Holders suffixed ‘–3L have a centre third wire which
grounds the case
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HC45 is not dimensionally identical to the UM1 but
for most purposes the two are interchangeable
General Specifications
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Load Capacitance (CL): 10pF to 75pF or Series
Typical Frequency vs Temperature Curves
for various angles of AT-cut crystals
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Drive Level: 1mW max.
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Static Capacitance (C0): 7pF max.
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Ageing: 3ppm typical per year
Standard Frequency Tolerances and Stabilities
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5ppm, 10ppm, 15ppm, 20ppm, 30ppm,
50ppm, 100ppm
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Operating Temperature Ranges
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0 to 50°C
–10 to 60°C
–20 to 70°C
–30 to 80°C
–40 to 90°C
–55 to 105°C
–55 to 125°C
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Storage Temperature Range
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–55 to 125°C
Environmental Specification
Shock: 981m/s2 for 6ms, three shocks in each direc-
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tion along three mutually perpendicular planes
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Vibration: 10 to 60Hz 0.75mm displacement, 60 to
2000Hz 98.1m/s2 acceleration, 30 minutes in each of
three mutually perpendicular planes
Marking
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Includes Frequency
Minimum Order Information Required
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Frequency + Holder + Frequency Tolerance @ 25°C
+ Frequency Stability + Operating Temperature
Range + Circuit Condition + Overtone Order
Europe Tel: +44 (0)1460 74433 Fax: +44 (0)1460 72578
16
Americas Tel: +1 919 941 0430 Fax: +1 919 941 0530
ETC [ ETC ]
