UM5 & UM4 CRYSTALS
Outline in mm (inches) - UM5 & UM5-3L
ISSUE 6; 12 JANUARY 1996
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Delivery Options
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Please contact our sales office for current leadtimes
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Holder Style
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UM5 & UM4 crystals are resistance welded, hermeti-
cally 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
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grounds the case
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General Specifications
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Load Capacitance (CL): 10pF to 75pF or Series
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Drive Level: 1mW max.
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Static Capacitance (C0): 6pF max
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Ageing: 3ppm typical per year
Outline in mm (inches) - UM4 & UM4-3L
Standard Frequency Tolerances and Stabilities
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5ppm, 10ppm, 15ppm, 20ppm, 30ppm,
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50ppm, 100ppm
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Operating Temperature Ranges
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0 to 50°C
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–10 to 60°C
–20 to 70°C
–30 to 80°C
–40 to 90°C
–55 to 105°C
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Storage Temperature Range
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–55 to 125°C
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Environmental Specification
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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
Typical Frequency vs Temperature Curves
for various angles of AT-cut crystals
500Hz 98.1m/s2 acceleration, 30 minutes in each of
three mutually perpendicular planes
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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
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Europe Tel: +44 (0)1460 74433 Fax: +44 (0)1460 72578
18
Americas Tel: +1 919 941 0430 Fax: +1 919 941 0530
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