SURFACE-MOUNT CRYSTALS
49MJ CRYSTALS
Surfa ce -m oun t HC49
OUTLINES AND DIMENSIONS
DESCRIPTION
49MJ crystals are standard HC49 crystals with formed leads, fitted with a
clip to enable surface-mount PCB assembly. The crystal therefore offers
the ease of surface-mount assembly with the technical benefit of close-
tolerance crystal parameters achievable by the use of circular AT-Cut
crystal blanks in the HC49 crystal.
FEATURES
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Surfa ce m oun t ve rsion of HC49
Ava ila b le with close tole ra n ce s
Fully custom isa b le for a p p lica tion re q uire m e n ts
Custom ise d p a rts re a d ily a va ila b le
In d ustry-sta n d a rd p a cka g e
Low in sta lle d cost
GENERAL SPECIFICATION
Fre q ue n cy Ra n g e :
Oscilla tion Mod e :
1.0MHz to 200MHz
See table
Ca lib ra tion Tole ra n ce a t 25º C
SL-Cut (< 1.3MHz):
from ± 50ppm
AT-Cut (> 1.3MHz): from ± 3ppm
Fre q ue n cy sta b ility ove r te m p
SL-Cut (< 1.3MHz):
FREQUENCY STABILITY OVER TEMPERATURE
from ± 100ppm -10° to + 60°C
AT-Cut (> 1.3MHz): from ± 3ppm 0° to + 50°C
Te m p e ra ture Sta b ility (p p m )
Op e ra tin g
Te m p . °C
See table for details
Sh un t Ca p a cita n ce (C0):
Loa d Ca p a cita n ce (CL):
4pF typical, 7pF maximum
Series or from 8pF to 32pF
(Custom e r to sp e cify CL)
± 3ppm max 1st year,
± 1ppm max per year after
1mW maximum
± 3
± 5
± 7.5 ± 10 ± 15 ± 20 ± 30
0° to + 50°
ü
ü
ü
ü
ü
ü
ü
ü
ü
X
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
Ag e in g :
-10° to + 60°
-20° to + 70°
-30° to + 80°
-40° to + 90°
-55° to + 105°
ü
ü
ü
ü
Drive le ve l:
Hold e r:
X
X
X
X
ü
ü
ü
Resistance-weld, hermetic seal
H49MJ or 49TMJ
X
X
X
X
X
X
ü
Hold e r Va ria n ts:
(See outline drawing)
Bulk pack (standard)
X
X
Sup p ly form a t:
or tape (Ammo-Pak)
PART NUMBER GENERATION
OSCILLATION MODE & ESR
49MJ crystals part numbers are derived as follows:
Fre q ue n cy
(MHz)
Crysta l Cut
Oscilla tion Mod e
ESR (m a x)
(Oh m s)
Example:
16.000MHz 49MJ/ 10/ 20/ 10/ 30p F/ ATF
1.0 ~ 1.3
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
30.01~ 45.0
24.0~ 100
80.0~ 160
110~ 200
SL
5000
400
200
150
120
100
50
35
25
20
40
Frequency
Package - 49MJ
- 49TMJ
Calibration Tolerance at 25°C
(in ± ppm)
Temperature Stability
(in ± ppm)
Operating Temperature Range
(lower figure of
temperature range)
Circuit Condition
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
70
120
(CL in pF or SERIES)
Mode
- SLF (SL-Cut, fund.)
- ATF (AT-Cut, fund.)
- AT3 (AT-Cut, 3rd overtone)
- AT5 (AT-Cut, 5th overtone)
- AT7 (AT-Cut, 7th overtone)
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
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