Crystal Units
2003B_RC-8_e
RC-8 / NC-18C
For High Precision Industry
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Specications
A highly reliable crystal unit with outstanding frequency stability
and covering a broad frequency range.
● Theproductsatisesstricttemperaturecharacteristicsstandards,
isshockresistantandhasexcellentfrequencyreproducibility.
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Features
mm
15.60 dia max
12.85 dia max
4.80 max
5-0.45+0.03/-0.05 dia
6.3+/-0.5
7.16+/-0.1
2.54+/-0.1
45 deg
Ground lead
#1 X’tal lead
#2 N/C lead
#3 X’tal lead
#4 N/C lead
#5 Ground lead
#2
#4
#1
#5
#3
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Dimensions
mm
10.10max.
5.00max.
3.55max.
11.45max.
4.88+/-0.20
Glass
Metal
Glass
Metal
8.00min.
2.00min
0.89
13.46max.13.2+/-1
0.43-0.03dia.
+0.05
Item
Model
RC-8 NC-18C RC-8 / NC-18C
Standard Standard Standard Optional
NominalFrequency(MHz) 5 to 20 10 to 20
RC-8 : 5 to 20
NC-18C : 10 to 20
Overtone Order 3rd overtone 3rd overtone 3rd overtone
OperatingTemperatureRange(°C) –40 to +120 –40 to +120 –40 to +120
StorageTemperatureRange(°C) –55 to +125 –55 to +125 –55 to +125
Turnoverpoint(°C) +70 to +110 +70 to +110 +70 to +110
FrequencyTolerance
(atmiddleofturnoverpoint)
Max. ±3 × 10
–6
Max. ±3 × 10
–6
Max. ±3 × 10
–6
EquivalentSeriesResistance(Ω) Max. 150 Max. 150 Max. 150
LevelofDrive(μW) Max. 100 Max. 100 Max. 100
LoadCapacitance(pF) Series to 32 Series to 32 Series to 32
FrequencyAging(atTurnoverpoint) --- ---
Max. ±100 × 10
−9
/ year
(24Hafterref)
SpecicationsNumber STD-CWB-2 STD-CWB-1 Refer to *2
Pleasespecifythemodelname,frequency,andspecicationnumberwhenyouorderproducts.
Forfurtherquestionsregardingspecications,pleasefeelfreetocontactus.
*1Ifyouhaveanyotherrequests,NDKwillstudyit.
*2Orderinginformation:OvertoneOrder3rdOvertone,theOperatingTemperatureRange,FrequencyTolerance,andLoadCapacitance.
Ex.Model,Frequency(12.000000MHz6digits),S3:3rdovertone–OperatingTemperatureRange(−40to+120°C)−Frequency
Tolerance(±3×10
–6
)−LoadCapacitance(10pF)
RC-8
12.000000MHz
S3-40120-3-10
RC-8 NC-18C
Directive 2011/65/EU
Directive (EU) 2015/863
RC-8 NC-18C