RF Filters for Cellular Phones
Series/Type: B4121
The following products presented in this data sheet are being withdrawn.
Ordering Code Substitute Product Date of Withdrawal Deadline Last
Orders Last Shipments
B39941B4121U510 B39941B4124U410 2009-04-03 2009-07-15 2009-10-15
For further information please contact your nearest EPCOS sales office, which will also support you in selecting a
suitable substitute. The addresses of our worldwide sales network are presented at www.epcos.com/sales.
2Feb 27, 2003
SAW Components B4121
942,50 MHz
Low-Loss Filter for Mobile Communication
Data Sheet
Ceramic package DCC6D
Features
■Low-loss RF filter for mobile telephone
EGSM systems, receive path
■Low amplitude ripple
■Usable passband 35 MHz
■Unbalanced to balanced operation
■Impedance transformation from 50 Ω
to 150 Ω
■Ceramic package for Surface Mounted
Technology (SMT)
Terminals
■Ni, gold-plated
Dimensions in mm, approx. weight 0,037 g
Pin configuration
2 Input, unbalanced
1, 3 Input ground
4, 6 Output, balanced
5 To be grounded
1, 3, 5 Case ground
Electrostatic Sensitive Device (ESD)
Type Ordering code Marking and Package
according to Packing
according to
B4121 B39941-B4121-U510 C61157-A7-A68 F61074-V8089-Z000
Maximum ratings
Operable temperature range
T
– 40 / + 85 °C
Storage temperature range
T
stg – 40 / + 85 °C
DC voltage
V
DC 3V
Input power max.
880 ... 915 MHz
1705 ...1785 MHz
P
IN
18
18
dBm
dBm
source impedance 50 Ω,
load impedance 150 Ω,
CW input for min. 2000 h
3Feb 27, 2003
SAW Components B4121
942,50 MHz
Low-Loss Filter for Mobile Communication
Data Sheet
Characteristics
Operating temperature range:
T
= 25+-2 °C
Terminating source impedance:
Z
S= 50 Ω
Terminating load impedance:
Z
L= 150 Ω || 80 nH
min. typ. max.
Center frequency
f
C— 942,5 — MHz
Maximum insertion attenuation αmax
925,0 ... 960,0 MHz — 2,8 3,2 dB
Amplitude ripple (p-p) ∆α
925,0 ... 960,0 MHz — 1,0 1,4 dB
Attenuation α
0,0 ... 600,0 MHz 60 70 — dB
600,0 ... 880,0 MHz 50 55 — dB
880,0 ... 905,0 MHz 30 38 — dB
905,0 ... 915,0 MHz 18 23 — dB
980,0 ...1000,0 MHz 21 23 — dB
1000,0 ...1025,0 MHz 30 37 — dB
1025,0 ...1050,0 MHz 35 40 — dB
1050,0 ...1500,0 MHz 50 57 — dB
1500,0 ...2130,0 MHz 45 55 — dB
2130,0 ...3000,0 MHz 40 48 — dB
3000,0 ...4050,0 MHz 35 41 — dB
4050,0 ...5700,0 MHz 23 30 — dB
Symmetry in band
(referenced to the matched operating condition)
|S31|/|S21| 925,0 ... 960,0 MHz -1,8 0 1,2 dB
arg(S31/S21) 925,0 ... 960,0 MHz 170 180 192 °
4Feb 27, 2003
SAW Components B4121
942,50 MHz
Low-Loss Filter for Mobile Communication
Data Sheet
Characteristics
Operating temperature range:
T
= -10 to +75 °C
Terminating source impedance:
Z
S= 50 Ω
Terminating load impedance:
Z
L= 150 Ω || 80 nH
min. typ. max.
Center frequency
f
C— 942,5 — MHz
Maximum insertion attenuation αmax
925,0 ... 960,0 MHz — 3,0 3,8 dB
Amplitude ripple (p-p) ∆α
925,0 ... 960,0 MHz — 1,2 2,0 dB
Attenuation α
0,0 ... 600,0 MHz 60 70 — dB
600,0 ... 880,0 MHz 50 55 — dB
880,0 ... 905,0 MHz 28 33 — dB
905,0 ... 915,0 MHz 18 21 — dB
980,0 ...1000,0 MHz 20 22 — dB
1000,0 ...1025,0 MHz 30 37 — dB
1025,0 ...1050,0 MHz 35 40 — dB
1050,0 ...1500,0 MHz 50 57 — dB
1500,0 ...2130,0 MHz 45 55 — dB
2130,0 ...3000,0 MHz 40 48 — dB
3000,0 ...4050,0 MHz 35 41 — dB
4050,0 ...5700,0 MHz 23 30 — dB
Symmetry in band
(referenced to the matched operating condition)
|S31|/|S21| 925,0 ... 960,0 MHz -2,3 0 1,2 dB
arg(S31/S21) 925,0 ... 960,0 MHz 170 180 192 °
5Feb 27, 2003
SAW Components B4121
942,50 MHz
Low-Loss Filter for Mobile Communication
Data Sheet
Characteristics
Operating temperature range:
T
= -40 to +85 °C
Terminating source impedance:
Z
S= 50 Ω
Terminating load impedance:
Z
L= 150 Ω || 80 nH
min. typ. max.
Center frequency
f
C— 942,5 — MHz
Maximum insertion attenuation αmax
925,0 ... 960,0 MHz — 3,4 4,2 dB
Amplitude ripple (p-p) ∆α
925,0 ... 960,0 MHz — 1,8 2,6 dB
Attenuation α
0,0 ... 600,0 MHz 60 70 — dB
600,0 ... 880,0 MHz 50 55 — dB
880,0 ... 905,0 MHz 28 33 — dB
905,0 ... 915,0 MHz 18 21 — dB
980,0 ...1000,0 MHz 19 21 — dB
1000,0 ...1025,0 MHz 30 37 — dB
1025,0 ...1050,0 MHz 35 40 — dB
1050,0 ...1500,0 MHz 50 57 — dB
1500,0 ...2130,0 MHz 45 55 — dB
2130,0 ...3000,0 MHz 40 48 — dB
3000,0 ...4050,0 MHz 35 41 — dB
4050,0 ...5700,0 MHz 23 30 — dB
Symmetry in band
(referenced to the matched operating condition)
|S31|/|S21| 925,0 ... 960,0 MHz -2,6 0 1,2 dB
arg(S31/S21) 925,0 ... 960,0 MHz 170 180 192 °
6Feb 27, 2003
SAW Components B4121
942,50 MHz
Low-Loss Filter for Mobile Communication
Data Sheet
Transfer function ( spec at 25 °C )
Transfer function ( wideband )
7Feb 27, 2003
SAW Components B4121
942,50 MHz
Low-Loss Filter for Mobile Communication
Data Sheet
Published by EPCOS AG
Surface Acoustic Wave Components Division, SAW MC WT
P.O. Box 80 17 09, 81617 Munich, GERMANY
EPCOS AG 2002. Reproduction, publication and dissemination of this brochure and the informa-
t
ion contained therein without EPCOS’ prior express consent is prohibited.
Purchase orders are subject to the General Conditions for the Supply of Products and Services of
t
he Electrical and Electronics Industry recommended by the ZVEI (German Electrical and Electronic
Manufacturers’ Association), unless otherwise agreed.
T
his brochure replaces the previous edition.
For questions on technology, prices and delivery please contact the Sales Offices of EPCOS AG or
t
he international Representatives.
Due to technical requirements components may contain dangerous substances. For information on
t
he type in question please also contact one of our Sales Offices.
