
LTM-455BU
455±2.0
4
2
±15
±30
27
1500
LTM-455CU
455±2.0
4
2
±12.5
±24
27
1500
LTM-455DU
455±1.5
4
2
±10
±20
27
1500
LTM-455EU
455±1.5
6
2
±7.5
±15
27
1500
LTM-450FU
455±1.5
6
2
±6
±12.5
27
2000
LTM-450GU
455±1.0
6
2
±4.5
±10
25
2000
LTM-450HU
455±1.0
6
2
±3
±9
25
2000
LTM-450IU
455±1.0
6
2
±2
±7.5
25
2000
LTM-450HTU
455±1.0
6
2
±3
±9
35
2000
LTM-450ITU
455±1.0
6
2
±2
±7.5
35
2000
Frequency v. Attenuation Characteristics
Attenuation
(dB)
Frequency (kHz)
0
10
20
30
40
50
60
410 420 430 440 450 460 470 480
500
490
LTM-455BU
LTM-455EU
LTM-455HU
( ) = typical values
LTMU
R2
R1
RG
RF
V.M.
Output
Input
SSG
Ground
1
2
3
RG+R1=R2=Input/Output Impedance
4
TEST CIRCUIT
High selectivity type ceramic filters
Pass bandwidths from 30kHz to 4MHz
Easily mounted to PCB
Miniature size
EUROQUARTZ
LTM-455 U CERAMIC FILTER
4 Element
SPECIFICATION
Outline and Dimensions
7.0
6.5
4.0
7.0
0.8
4.3
1.8
Actual size
(outline top view)
Connections
1
2
3
4
Input
Output
Ground
12
3
2.4
4
ELECTRICAL CHARACTERISTICS
Centre
Frequency
(kHz)
Insertion
Loss
(dB max.)
Part
Number
Pass Band
Ripple
(dB max.)
40dB
Bandwidth
(kHz min.)
6dB
Bandwidth
(kHz min.)
Stop Band
Att. ±100kHz
(dB min.)
Input/Output
Impedance
()
W
EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE
Tel: +44(0)1460 230000 Fax: +44(0)1460 230001 Email: sales@euroquartz.co.uk www.euroquartz.co.uk