Dielectric Filters for Surface Mounting
面
実装
づけ
用 小型誘電体フィルタ
TYPE
#4DFA
#4DFB
17.5
14.5
11.5
1.5
1
1
7
*
12.5 Max.
GND
GND
OUT
IN
5
*
: Depends on Center Frequency.
*
: 長さは周波数に依存します。
#4DFB-915E-10
Center Frequency: 915MHz Span: 200MHz
Attenuation (dB)
Return Loss (dB)
0
5
10
15
20
25
30
35
40
45
50
0
5
10
15
20
25
30
35
40
45
50
Attenuation
Return loss
(Unit: mm)
12.5 5
9.6
7
GND
GND
GND
1
7
1
OUT IN
1.5
*
12.5 Max.
TYPE #4DFA (2 Pole SMD Type) / #4DFB (3 Pole Type)
Frequency Range:
700~2500MHz
Temperature Range:
− 40°C~+ 85°C
Typical Characteristics
代表特性例
SELECTION GUIDE FOR STANDARD DEVICES
• The Part Number shown in the table below are standard devices, which are
readily available. TOKO will design and manufacture modified and custom
devices with specific characteristics to meet your requiements.
If you do not find the devices for your application in this catalog, please
contact our sales or representative office.
• RoHS compliant
• 下記の表に示す製品番号は標準品です。TOKOは、お客様のご要望に合わせ設計、製作
致しますので、お客様の用途に適合する仕様が見当たらない場合は、当社営業所または
代理店にご連絡下さい。
• RoHS指令対応
*
: Depends on Center Frequency.
*
: 長さは周波数に依存します。
#4DFA-1575B-10
Center Frequency: 1,575.4MHz Span: 300MHz
Attenuation (dB)
Return Loss (dB)
0
5
10
15
20
25
30
35
40
45
50
0
5
10
15
20
25
30
35
40
45
50
Attenuation
Return loss
(Unit: mm)
#4DFA
#4DFB
#4DFA-886A-10 886.0 ± 1.0 3.0 1.0 2.0 22 (fo ± 45) Cordless Phone
#4DFA-808C-11 808.0 ± 8.0 2.0 1.0 2.0 22 (fo ± 64)
Wireless Microphon
#4DFA-849C-10 849.0 ± 8.0 2.0 1.0 2.0 22 (fo ± 64)
Wireless Microphon
#4DFA-915E-10 915.0 ± 13.0 2.2 1.0 2.0 18 (fo ± 77.5) Spread Spectrum
#4DFA-1227B-10 1227.0 ± 5.0 2.0 0.8 2.0 7, 30 (fo ± 35, ± 140) GPS
TYPE #4DFA: SMD 2 Pole Designs
東光品番 中心周波数 帯域幅 挿入損失
帯域内リップル
V.S.W.R. 選択度 応用例
#4DFA-836E-10 836.5 ± 12.5 2.0 1.0 2.0 18 (fo ± 77.5) AMPS
#4DFA-881E-10 881.5 ± 12.5 2.0 1.0 2.0 18 (fo ± 77.5) AMPS
#4DFA-902E-10 902.5 ± 12.5 2.0 1.0 2.0 18 (fo ± 77.5) NMT/GSM
#4DFA-947E-10 947.5 ± 12.5 2.0 1.0 2.0 18 (fo ± 77.5) NMT/GSM
#4DFA-866A-10 866.0 ± 2.0 3.0 1.0 1.43 30 (fo − 105) CT2
TOKO
Part
Number
Center
Frequency
(MHz)
Insertion
Loss
(dB) Max.
Ripple
in BW
(dB) Max.
V.S.W.R.
in BW
Max.
Application
Bandwidth
(fo ± MHz)
Selectivity
(dB) Min. (MHz)
#4DFA-1227B-11 1227.0 ± 5.0 1.2: 0.7 Typ. 0.5 2.0 15, 20 (fo + 140, − 140) GPS
#4DFA-1227D-12 1227.0 ± 10.0 1.2: 0.7 Typ. 0.7 2.0 16, 20 (fo + 140, − 140) GPS
#4DFA-1248B-10 1248.0 ± 5.0 2.0: 1.4 Typ. 0.8 2.0 7, 30 (fo ± 35, ± 140) GPS
#4DFA-1575B-10 1575.4 ± 5.0 2.0: 1.4 Typ. 0.8 2.0 7, 30 (fo ± 35, ± 140) GPS
#4DFA-1575B-12 1575.4 ± 5.0 1.2: 0.7 Typ. 0.5 2.0 17, 20 (fo + 140, − 140) GPS
#4DFA-1575B-14 1575.4 ± 5.0 2.5: 1.8 Typ. 0.8 2.0 17 (fo ± 50) GPS
#4DFA-1550L-10 1550.0 ± 30.0 1.2: 0.7 Typ. 0.7 2.0 12,16 (fo + 150, − 150) MCSS
#4DFA-2442P-10 2442.0 ± 40.0 2.5 1.0 2.0 15 (fo ± 250) Spread Spectrum
#4DFA-2642E-11 2642.5 ± 12.5 2.0: 1.4 Typ. 0.8 2.0 36,38 (fo + 500, − 500) Mobile Broadcast
入出力インピーダンス/InputOutputimpedance:50Ω