THROUGH-HOLE CRYSTALS
HC49 SERIES CRYSTALS
DESCRIPTION
OUTLINES & DIMENSIONS
HC49 crystals are a long-established industry-standard part. Basic
specification HC49 crystals provide the lowest cost crystal available but
these crystals can also be manufactured to very close tolerances and low
ESR values. Holder variants are HC49/ T (truncated), providing a lower
height version, 3-wire versions where the crystal base and body can be
earthed by a centre earth wire and HC50 which has larger diameter leads
specifically for socket mounting.
FEATURES
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Ve ry low cost crysta l
Ava ila b le with close tole ra n ce s
Fully custom isa b le sp e cifica tion
Com p re h e n sive Euroq ua rtz stockh old in g
In d ustry-sta n d a rd p a cka g e with op tion s
Ve ry wid e fre q ue n cy ra n g e
GENERAL SPECIFICATION
Fre q ue n cy Ra n g e :
1.0MHz to 250.0MHz
from ± 3ppm to ± 50ppm
from ± 3ppm to ± 100ppm
8pF to 50pF, or Series
± 3ppm max 1st year,
± 1ppm max per year after
1mW max
Ca lib ra tion Tole ra n ce a t 25º C:
Fre q ue n cy sta b ility ove r te m p :
Loa d Ca p a cita n ce :
Ag e in g :
Drive le ve l:
Sta tic ca p a cita n ce (C0):
Hold e r:
7pF max
Resistance-weld, hermetic seal
Pa rt Num b e rs for Hold e r Va ria n ts *
Hold e r Typ e
Standard 2 lead:
Hold e r De sig n a tion
HC49
Low height versions:
Centre Earth Lead:
Centre Earth Lead (Low):
‘Plug-in’ for use in socket:
HC49/ T (from 4.0MHz)
HC49/ 3W
HC49/ T/ 3W (from 4.0MHz)
HC-50
* HC49 crysta ls a re a lso a va ila b le for surfa ce -m oun t a p p lica tion s with
form e d le a d s a n d fitte d with a clip . Se e ‘49MJ’ in th e surfa ce -m oun t
crysta l se ction on Euroq ua rtz we b site ; www.e uroq ua rtz.co.uk
OSCILLATION MODE & ESR
Fre q ue n cy
(MHz)
Crysta l Cut/
Oscilla tion Mod e
ESR (m a x)
(Oh m s)
1.0 ~ 1.3
SL Fund.
AT Fund.
AT Fund.
AT Fund.
AT Fund
AT Fund.
AT Fund.
AT Fund.
AT Fund.
AT Fund.
AT 3rd OT
AT 5th OT
AT 7th OT
5000
400
200
150
120
100
50
35
25
20
40
2.01 ~ 3.0
3.01 ~ 3.2
3.21 ~ 3.5
3.51 ~ 3.9
3.91 ~ 5.0
5.01 ~ 7.0
7.01 ~ 10.0
10.0 ~ 30.0
30.1 ~ 45
24.0 ~ 100
80.0 ~ 160
110 ~ 250
FREQUENCY STABILITY OVER TEMPERATURE
Te m p e ra ture Sta b ility (p p m )
Op e ra tin g
Te m p . °C
± 3
± 5
± 7.5 ± 10 ± 15 ± 20 ± 30
0° to + 50°
ü
ü
X
X
X
X
ü
ü
ü
X
X
X
ü
ü
ü
X
X
X
ü
ü
ü
ü
X
X
ü
ü
ü
ü
ü
X
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
-10° to + 60°
-20° to + 70°
-30° to + 80°
-40° to + 90°
-55° to + 105°
70
120
PART NUMBER GENERATION
HC49 crystal part numbers are derived as follows:
ü Indicates this stability is available over the stated operating temp. range
Example: 16.000MHz HC49/ 30/ 50/ 10/ 30p F/ ATF
Frequency/ Holder/ Calibration/ Temp. Stability/ Temp. Range/ Circuit
EUROQUARTZ LIMITED Bla ckn e ll La n e CREWKERNE Som e rse t UK TA18 7HE
Te l: + 44 1460 230000 Fa x: + 44 1460 230001 e m a il: in fo@e uroq ua rtz.co.uk we b : www.e uroq ua rtz.co.uk