Ceramic Filters

(LT10.7M)

Introduction (LT10.7M)

Low Loss And Stable Characteristics

Token (LT10.7M) ceramic filters are compatible with Murata SFELF10M7. Token LT10.7M series are monolithic devices which utilize the energy-trapped thickness vibration-mode. This principle of operation is based upon the fact that an excellent resonating element with low spurious vibration can be obtained by adhering to certain theoretical parameters of design. These parameters include the physical dimensions of the peizo element, the electrode pattern, and the associated mass loading effect of the electrodes.

Token categorizes the LT 10.7 family according to rank of center frequency. This ranking indicates that a given LT 10.7 will be marked with one of the colors listed in the following chart and will exhibit the center frequency in Technical Characteristics Table.

The (LT10.7M) offers three series: LT10.7M for FM Receiver (Compatible Murata SFELF10M7), LT10.7M A10 Insertion Loss 2.5±2.0 db ~ 4.5±2.0 db (Compatible Murata SFELF10M7 A10), and LT10.7M Wide Band-width 950 kHz at 20dB/Narrow Band-width 95 kHz at 20dB (Compatible Murata Filter SFELF10M7 DBS Receiver).

(LT10.7M) Narrow Band-width series features stable low spurious and temperature characteristics. This series is suitable for European car-audio or AM up conversion use that needs narrow band characteristics are stable. LT10.7M Wide Band-width series are specified to make up conventional ceramic filters which wider band characteristics not obtained.

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 :

Change in center frequency is typically within ±30ppm/°C at -20°C to +80°C.
Various band widths are available for applications in wide to narrow bands.
Low loss, favorable waveform symmetry, and high selectivity.
These miniature filters have high mechanical strength.
Excellent shape factor of frequency response.
Small dispersion and stable characteristics.
Good waveform symmetry.
High reliability.

Dimensions (Unit: mm) (LT10.7M)

Dimensions
LT10.7Mxx Serial WH: 7.0±2.07.0±2.0 mm
LT10.7MFP WH: 10.0±2.010.0±2.0 mm

Technical Characteristics (LT10.7M) For FM Receiver (Murata SFE10M7 FM-IF Compatible)

Part Number	3dB Band Width (kHz)	20dB Band Width (kHz) max	Insertion Loss (dB) max	Spurious Attenuation (9-12MHz)(dB)min
LT10.7MA5	280±50	650	6	30
LT10.7MS2	230±50	600	6	40
LT10.7MS3	180±40	520	7	40

Input/Ouput Impedance: 330Ω

Technical Characteristics (LT10.7M A10) Low Insertion Loss (Murata SFE10M7 A10 Compatible)

Part Number	3dB Band Width (kHz)	20dB Band Width (kHz) max	Insertion Loss (dB)	Spurious Attenuation (9-12MHz)(dB)min
LT10.7MA5A10	280±50	590	2.5±2.0	30
LT10.7MS2A10	230±50	520	3.0±2.0	35
LT10.7MS3A10	180±40	470	3.5±1.5	35
LT10.7MJA10	150±40	360	4.5±2.0	35

Input/Ouput Impedance: 330Ω

Technical Characteristics (LT10.7M) Wide/Narrow Band-width (Murata SFE10M7 DBS Receiver Compatible)

Part Number	3dB Band Width (kHz)	20dB Band Width (kHz) max	Insertion Loss (dB)	Spurious Attenuation (9-12MHz)(dB)min
LT10.7MA19	350min	950	3.0±2.0	20
LT10.7MA20	330±50	680	4.0±2.0	30
LT10.7MHY	110±30	350	7.0±2.0	30
LT10.7MFP	20min	95	6.0max	24(10.7±1.0MHz)

Input/Ouput Impedance: 470Ω(MA19), 330Ω(MA20,MHY), 600Ω(MFP)

Characteristics (LT10.7M)

(LT10.7M) Characteristics

Matching Conditions & Test Circuit (LT10.7M)

(LT10.7M) Test Circuit

When using filters, it is most important to match the input/output load to impedance 330 ohm (LT10.7MA19 is 470 ohm matching). Waveform symmetry is damaged when reactance is added to the input/output load.
Two filters directly connected can be used for high selectivity. For reducing waveform variation, it is recommended to input a buffer AMP between filters.
The LT10.7M series are of input/output symmetric structure so that in theory there is no input/output directionality. Actual circuits may use different input/output loading conditions (for example, mismatched impedance) or capacitance load. In such cases, the waveform will be a little changed by the direction of the input/output of the filter.

Standard Marking Color (LT10.7M)

Center Frequency	Color
D:10.64MHz±30kHz	Black
B:10.67MHz±30kHz	Blue
A:10.70MHz±30kHz	Red
C:10.73MHz±30kHz	Orange
E:10.76MHz±30kHz	White

Order Codes (LT10.7M)

LT10.7MA5

Part Number

LT10.7MA5

LT10.7MS2

LT10.7MS3

LT10.7MA5A10

LT10.7MS2A10

LT10.7MS3A10

LT10.7MJA10

LT10.7MA19

LT10.7MA20

LT10.7MHY

LT10.7MFP

Center Frequency color code
A	10.70MHz±30kHz Red
B	10.67MHz±30kHz Blue
C	10.73MHz±30kHz Orange
D	10.64MHz±30kHz Black
E	10.76MHz±30kHz White

Package
P	Bulks
TB	Tab Box

More Information About Ceramic Filters in PDF download

Good Waveform Symmetry, Small Dispersion, And High Selectivity Filters (LT10.7) Series PDF download (342KB).