EPCOS B3821

SAW Components
Data Sheet B3821
SAW Components
B3821
Low-Loss Filter
860,5 MHz
Data Sheet
Ceramic package QCC8B
Features
Low-loss filter for TETRA
Usable bandwidth 19 MHz
No matching required for operation at 50 Ω
Package for Surface Mounted Technology
(SMT)
● Hermetically sealed ceramic package
●
●
●
●
Terminals
● Gold-plated
typ. Dimensions in mm, approx. weight 0,07 g
Pin configuration
2
6
1, 3, 4, 5, 7, 8
Type
B3821
Input
Output
To be grounded
Ordering code
B39861-B3821-Z810
Marking and Package
Packing
according to
according to
C61157-A7-A46
F61074-V8037-Z000
Electrostatic Sensitive Device (ESD)
Maximum ratings
Operable temperature range TA
Storage temperature range Tstg
DC voltage
VDC
Input power max.
PIN
-40 / +85
-40 / +85
0
15 ,0
˚C
˚C
V
dBm
2
source impedance 50 Ω
CW for min. 10 000 h, 85 ˚C
Aug 28, 2001
SAW Components
B3821
Low-Loss Filter
860,5 MHz
Data Sheet
Characteristics
Operating temperature range:
Terminating source impedance:
Terminating load impedance:
TA = +15 ... +35 ˚C
ZS = 50 Ω
ZL = 50 Ω
Nominal frequency
fN
Maximum insertion attenuation
851,0 MHz ... 870,0 MHz
αmax
Amplitude ripple (p-p)
851,0 MHz ... 870,0 MHz
∆α
Input and output return loss
851,0 MHz ... 870,0 MHz
Absolute attenuation
0,1 MHz ... 797,0 MHz
797,0 MHz ... 813,0 MHz
813,0 MHz ... 829,0 MHz
829,0 MHz ... 833,0 MHz
904,0 MHz ... 959,0 MHz
959,0 MHz ... 1089,0 MHz
1089,0 MHz ... 2000,0 MHz
αabs
Temperature coefficient of frequency
TCf
3
min.
typ.
max.
—
860,5
—
—
2,2
2,5
dB
—
0,45
0,7
dB
MHz
12
16
—
dB
45
40
35
25
30
50
30
55
50
43
40
40
60
42
—
—
—
—
—
—
—
dB
dB
dB
dB
dB
dB
dB
—
– 36
—
ppm/K
Aug 28, 2001
SAW Components
B3821
Low-Loss Filter
860,5 MHz
Data Sheet
Characteristics
Operating temperature range:
Terminating source impedance:
Terminating load impedance:
TA = -30 ... +70 ˚C
ZS = 50 Ω
ZL = 50 Ω
Nominal frequency
fN
Maximum insertion attenuation
851,0 MHz ... 870,0 MHz
αmax
Amplitude ripple (p-p)
851,0 MHz ... 870,0 MHz
∆α
Input and output return loss
851,0 MHz ... 870,0 MHz
Absolute attenuation
0,1 MHz ... 797,0 MHz
797,0 MHz ... 813,0 MHz
813,0 MHz ... 829,0 MHz
829,0 MHz ... 833,0 MHz
904,0 MHz ... 959,0 MHz
959,0 MHz ... 1089,0 MHz
1089,0 MHz ... 2000,0 MHz
αabs
Temperature coefficient of frequency
TCf
4
min.
typ.
max.
—
860,5
—
—
2,3
2,7
dB
—
0,55
0,8
dB
MHz
12
16
—
dB
45
40
35
19
30
50
30
55
50
43
40
40
60
42
—
—
—
—
—
—
—
dB
dB
dB
dB
dB
dB
dB
—
– 36
—
ppm/K
Aug 28, 2001
SAW Components
B3821
Low-Loss Filter
860,5 MHz
Data Sheet
Transfer function (+15 ˚C ... +35 ˚C)
Transfer function (pass band; +15 ˚C ... +35 ˚C)
5
Aug 28, 2001
SAW Components
B3821
Low-Loss Filter
860,5 MHz
Data Sheet
Published by EPCOS AG
Surface Acoustic Wave Components Division, SAW MC IS
P.O. Box 80 17 09, D-81617 München
 EPCOS AG 2001. All Rights Reserved. Reproduction, publication and dissemination of this brochure and the information contained therein without EPCOS’ prior express consent is prohibited.
The information contained in this brochure describes the type of component and shall not be considered as guaranteed characteristics. Purchase orders are subject to the General Conditions for
the Supply of Products and Services of the Electrical and Electronics Industry recommended by the
ZVEI (German Electrical and Electronic Manufacturers’ Association), unless otherwise agreed.
This brochure replaces the previous edition.
For questions on technology, prices and delivery please contact the Sales Offices of EPCOS AG or
the international Representatives.
Due to technical requirements components may contain dangerous substances. For information on
the type in question please also contact one of our Sales Offices.
6
Aug 28, 2001