TOKEN
LT 455/450 U/W Ceramic Filters
Ceramic Filters
for Communication
Token Ceramic Filters to Address the G.D.T. Characteristics
for Communication (Murata CF, SF Compatible)
Preview
Token ceramic filters for communication LT 455/450 U/W series are 4-element and 6-element devices connected
in ladder form. These highly selective filters are designed to address the G.D.T. characteristics required in digital
communications.
The excellent G.D.T. characteristics allow these filters to be utilized in areas such as the mobile cellular markets
as well as a variety of stereo applications. (Also available in 450kHz version.)
Custom parts are available on request. Token will also produce devices outside these specifications to meet
specific customer requirements, please contact our sales for more information.
Benefit Features :
- LT455 EU Dimensions: (7.0 x 8.0 x 8.0 mm).
- LT455 EW Dimensions: (7.0 x 11.0 x 8.0 mm).
- Center frequency: 450kHz, 455kHz.
- Pass Band Ripple (dB) max: 2 db.
- Insertion Loss (dB) max: 4 db, 6 db.
- Input / Output Impedance: 1000Ω ~ 2000Ω.
Version 2010
http://www.token.com.tw/
rfq token.com.tw
01 of 03
TOKEN
LT 455/450 U/W Ceramic Filters
Dimensions
0.8
2.9 2.9 2.6
7.0
8.0
55
55
EU
EW
③
4.0
③
① Input
② Ground
③ Output
②
①
⑤
②
4.0
①
④ ③ ② ①
⑤
8.0
8.0
②①
4.3
L4
0.8
11.0
L4
③
④
4.3
7.0
2.7
① Input
②③④ Ground
⑤ Output
Technical Characteristics
0
LT455BU
LT455EU
LT455HU
10
20
(dB) Attenuation
(dB) Attenuation
0
30
40
50
60
410
430
450 460
480
500
LT455BW
LT455EW
LT455HW
10
20
30
40
50
60
410
430
Frequency (KHz)
Part
Number
LT455AU
LT455BU
LT455CU
LT455DU
LT455EU
LT455FU
LT455GU
LT455HU
LT455IU
LT455HTU
LT455AW
LT455BW
LT455CW
LT455DW
LT455EW
LT455FW
LT455GW
LT455HW
LT455IW
LT455HTW
450 460
480
500
Frequency (KHz)
Pass
Insertion
Center
Band
Loss
Frequency
Ripple
(dB)
(kHz)
(dB)
max
max
6dB
Band
Width
(kHz)
min
455±2.0
455±2.0
455±2.0
455±1.5
455±1.5
455±1.5
455±1.5
455±1.0
455±1.0
455±1.0
±17.5
±15
±12.5
±10
±7.5
±6
±4.5
±3
±2
±3
4
4
4
4
6
6
6
6
6
6
2
2
2
2
2
2
2
2
2
2
Spurious
40dB
50dB
Input
Attenuation
Band
Band
/
fo±100kHz
Width
Width
Output
(dB) min
(kHz)
(kHz)
Impedance
max
max
(LT
(LT
(Ω)
(LT455U) (LT455W) 455 U) 455 W)
±40
±30
±24
±20
±15
±12.5
±10
±9
±7.5
±9
±35
±30
±24
±20
±15
±12.5
±10
±9
±7.5
±9
28
28
28
28
28
28
28
28
28
35
40
40
40
40
40
40
40
40
40
60
1000
1500
1500
1500
1500
2000
2000
2000
2000
2000
Note: Center frequency 450kHz is also available.
02 of 03
http://www.token.com.tw/
rfq token.com.tw
Version 2010
TOKEN
LT 455/450 U/W Ceramic Filters
Test Circuit
R1
③
①
R1
①
LT455U
~
LT455W
②
Rg
⑤
Rg
R2
RF
V.M
S.S.G
Rg+ R1= R2=Input/Output Impedance
~
②
③
④
R2
S.S.G
RF
V.M
Rg+ R1= R2=Input/Output Impedance
How to Order
LT455BU
P


 Part Number
 Package
Back to 1st Page - Ceramic Filters for Communication - LT 455/450 U/W
Version 2010
http://www.token.com.tw/
rfq token.com.tw
03 of 03