Data Sheet

EURO QUARTZ
MONOLITHIC CRYSTAL FILTERS
21.4, 21.7, and 45.0MHz
SMD TYPE 'Q' Series 2 & 4 poles
Compact and light weight
Excellent shock and vibration resistance
Suitable for auto pick and place, solder reflow capable
Designed for mobile, wireless comms, pagers, cellular etc.
OUTLINE & DIMENSIONS
ENVIRONMENTAL & MECHANICAL SPECIFICATIONS
RoHS Status:
Gross Leak:
RoHS compliant and pB free
60s minimum at +125°C in D.I.
water or flurocarbon fluid.
Half sine wave, acceleration of 100g
peak amplitude for 11ms duration,
3 cycles in each plane.
±5ppm maximum, frequency 10Hz
to 55Hz, amplitude 1.5mm or
10gs r.m.s. Duration 6 hours
Three drops onto hard wood board
from 75cm. 3 random drops.
After 48 hours at 85°C, 85% relative
humidity, non-condensing
Temperature cycling, exposed to
-40° for 30 minutes then at +85°C
for 30 minutes, duration of 5 days
-20° to +70°C
-40° to +85°C
Shock:
Vibration:
Drop Test:
Humidity:
Thermal Shock:
Operating Temperature Range:
Storage Temperature Range:
SPECIFICATIONS
Frequency
(MHz)
21.400
21.400
21.400
21.400
21.700
21.700
27.000
45.000
45.000
45.000
45.000
Model
21MQ7.5A
21MQ15A
21MQ15B
21MQ30A
21.7MQ15A
21.7MQ15B
21.7MQ30A
45MQ15A
45MQ15B
45MQ30A
45MQ30B
No. of
Poles
2
2
4
2
2
4
2
2
4
2
4
Pass
Bandwidth
dB
kHz
3
3
3
3
3
3
3
3
3
3
3
±3.75
±7.5
±7.5
±15
±7.5
±7.5
±15
±7.5
±7.5
±15
±15
Stop
Bandwidth
dB
kHz
20
18
40
15
18
40
15
15
30
15
30
±18
±25
±25
±50
±28
±25
±50
±25
±25
±60
±40
Insertion Guaranteed
Loss
Attenuation
dB max. dB max. dB
kHz
Ripple
1.0
0.5
1.0
1.5
1.0
1.0
1.5
1.0
1.0
1.0
1.0
2.0
1.5
3.0
2.0
2.0
3.0
2.0
2.0
3.0
2.0
3.0
70
70
70
50
70
70
50
70
80
70
70
-910
-910
-910
-910
-910
-910
-910
-910
-910
-910
-910
Terminating Impedance
Ohms//pF
850 // 6.0
1500 // 2.5
1800 // 0.35
2500 // 0
1500 // 2.5
1750 // 0.35
2500 // 0
560 // 6.0
600 // 2.3
1200 // 1.8
1200 // 1.0
Cc(pF)
5.0
5.0
7.5
2.5
PART NUMBER FORMAT
Example: 21MQ7.5A
Centre Frequency Code
21M = 21.4MHz
21.7M = 21.700MHz
45M = 45.000MHz
Q: Package style 7.0 x 5.0 x 1.3mm SMD
Pass Bandwidth (at 3dB min.)
7.5 = ±3.75kHz
15 = ±7.5kHz
30 = ±15kHz
Poles code
A = 2 poles (1 piece)
B = 4 poles (2 pieces)
C = 6 poles (3 pieces)
D = 8 poles (4 pieces)
EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE
Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001 info@euroquartz.co.uk www.euroquartz.co.uk