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RKM - 12 ( 155.520 MHz )

Specifications

Miniature Fundamental Mode Crystal Units



Metal-glass package UM-1 Scale 2:1
PARAMETERS VALUES
Frequency range, MHz 155.520
Calibration tolerance at 25 °C, D f/fn, ppm ± 20
Temperature stability, D f/fn, ppm ± 20
Operating temperature range, ° C -40 to +85 °C
Circuit condition: series resonance or load capacitance, CL, pF 8 ~ 30
Equivalent series resistance,typ./max, 
R1 Ohm		 6/15
Shunt capacitance, Ñ0, pF 1.4 ~ 1.7
Capacitance coefficient, r = Ñ0/Ñ1 270 ~ 360
Quality factor, Q 14 ~ 35
Aging, first year, D f/fn, ppm (max) ± 5 ~ ±10
Drive level, mW, (max) 0.1
Vibrations 5 ~ 2500 Hz,
15 g
Impact of single action 100 g, 3 ms
Impact of repeated action 40 g, 2 ms,
10000 impacts
Features
Fundamental mode
Inverted mesa crystal
Miniature package
Center ground lead available

These fundamental mode crystal units are based on inverted mesa blanks having unique surface finish quality provided by an original ion-thinning technology. Are applied in voltage controlled crystal oscillators of the system of SONET communication.