QUARTZ
EURO
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.
Shock:
Half sine wave, acceleration of 100g
peak amplitude for 11ms duration,
3 cycles in each plane.
Vibration:
±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
Drop Test:
Humidity:
Thermal Shock:
Temperature cycling, exposed to
-40° for 30 minutes then at +85°C
for 30 minutes, duration of 5 days
Operating Temperature Range: -20° to +70°C
Storage Temperature Range:
-40° to +85°C
SPECIFICATIONS
Pass
Bandwidth
Stop
Bandwidth
Insertion Guaranteed
Loss
Attenuation
dB max. dB max. dB
Frequency
Model
No. of
Poles
Ripple
Terminating Impedance
(MHz)
Ohms//pF
Cc(pF)
dB
dB
kHz
kHz
kHz
21.400
21.400
21.400
21.400
21.700
21.700
27.000
45.000
45.000
45.000
45.000
21MQ7.5A
21MQ15A
21MQ15B
21MQ30A
21.7MQ15A
21.7MQ15B
21.7MQ30A
45MQ15A
45MQ15B
45MQ30A
45MQ30B
2
2
4
2
2
4
2
2
4
2
4
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
20
18
40
15
18
40
15
15
30
15
30
±18
±25
±25
±50
±28
±25
±50
±25
±25
±60
±40
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
850 // 6.0
1500 // 2.5
1800 // 0.35 5.0
2500 // 0
1500 // 2.5
1750 // 0.35 5.0
2500 // 0
560 // 6.0
600 // 2.3
1200 // 1.8
1200 // 1.0
7.5
2.5
±15
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