Custom Built LC Filters -  Bandpass 400 Hz - 200 MHz
bp400-5m

Allen Avionics manufacturers Filters using many design types such as: Butterworth, Chebyshev and Elliptic Functions. The filters tabulated on this page are Chebyshev type. Other types can be designed when their special properties are needed.

  • Frequency Range: 400 Hz to 200 MHz

  • Impedance Range: 50 Ohms to 10K Ohms

  • Q Range: .5 to 50

  • Construction: Epoxy encapsulated or sealed in metal cans

  • Delivery: Prototypes can often be delivered in less than 7 days.
    Call or e-mail factory for special sizes

  • Maximum Ripple: 1dB

Order any Center Frequency from 400 Hz to 200 MHz. Interpolation between tabulated Center Frequencies and Bandwidth is allowable.

The size package that each Bandpass filter requires is a function of impedance, shape factor and type of termination or connector that is needed. The sizes listed will provide you with the minimum and maximum size for the combination of shape factor and impedance. Allen Avionics has hundreds of filter packages that are not listed and can be used to custom fit your application.

 

Size (Inches)
Units normally supplied in metal cans for printed circuit mounting (or end terminals). SMA connectors same size. BNC connectors may require larger cans.

Metal Cans

L

W

H
K3 3.00 x 1.125 x .750
M 3.00 x 1.625 x 1.125
M1 3.00 x 2.000 x 1.250
N 4.00 x 1.500 x 1.250
N1 4.00 x 2.000 x 1.250
O 5.00 x 1.500 x 1.250
O1 5.00 x 2.000 x 1.250
P 6.00 x 1.500 x 1.250
P1 6.00 x 2.000 x 1.250

Encapsulated in Epoxy Case

L

W

H
U 2.00 x 1.125 x .750
W 2.50 x 1.125 x .750
X 3.00 x 1.500 x 1.000
X1 3.00 x 2.000 x 1.000
Y 4.00 x 1.500 x 1.125
Y1 4.00 x 2.000 x 1.250
Z 4.50 x 2.500 x 1.375

 Fo = √F1F2  = √F3F4  = √F5F6

 

Custom Bandpass Filters - Series BP
1 dB Maximum Ripple
Center Frequency (Fo)

Q
Range
Fo /
3dB BW

 Shape Factor Impedance Range (Ohms) Insertion Loss (dB) Size Epoxy Size Metal
400 Hz .5-16 A 1K-10K 2-8 Y1 N1
.5-8 A1 1K-10K 3-7 Z O1
1 KHz .5-20 A 1K-10K 2-8 Y, Y1 N, N1
.5-10 A1 1K-10K 2-6 Z O1
.5-8 B 1K-10K 4-8 Z P1
5KHz .5-10 A 500-1 OK 1-4 Y, Y1 N, N1
10-25 A 500-1 OK 3-7 X, Y, Y1 M, N, N1
.5-10 A1 500-10K 1-5 X, Y, Z M, N, O1
10-25 A1 500-1 OK 4-8 Y, Y1 N, N1
.5-10 B 500-1 OK 2-6 Y, Z N, 01
.5-6 B1 500-10K 3-7 Y, Z N, 01
.5-5 C 1K 3-7 Z P1
10KHz .5-10 A 100-1 OK 1-4 Y, Y1 N, N1
10-25 A 100-10K 2-5 X, Y, Y1 M, N, N1
25-50 A 100-10K 3-7 Y, Y1 N, N1
.5-10 A1 100-1 OK 1-4 X, Y, Y1 M, N, N1
10-25 A1 100-1 OK 2-5 X, Y, Y1 M, N, N1
25-40 A1 100-1 OK 3-7 Y, Z Y Y1
.5-10 B 100-10K 1-5 X, Y, Z M, N, O1
10-30 B 100-1 OK 3-8 Y, Z N, 01
.5-10 B1 100-1 OK 1-4 X, Y, Z M, N, O1
10-25 B1 100-1 OK 3-7 Y, Z N, 01
.5-10 C 100-5K 2-6 Y, Z N, O1
10-20 C 100-500 3-7 Z 01
.5-10 D 500 3-7 Z 01
.5-5 E 500 4-8 Z P1
25KHz .5-10 A 100-10K 1-4 X, Y Y1 M, N, N1
10-25 A 100-1 OK 2-5 X, Y Y1 M, N, N1
25-50 A 100-10K 3-8 Y Y1 N, N1
.5-10 A1 100-10K 1-4 X, Y Y1 M, N, N1
10-25 A1 100-10K 2-5 X, Y Y1 M, N, N1
25-50 A1 100-5K 3-8 Y, Z N, 01
.5-10 B 100-1 OK 1-4 X, Y, Z M, N, O1
10-25 B 100-10K 3-7 Y, Z N, 01
25-40 B 100-5K 3-8 Z P1
.5-10 B1 100-1 OK 1-4 X, Y, Z M, N, O1
10-25 B1 100-10K 2-6 X, Y, Z M, N, 01
25-35 B1 100-500 3-8 Z P1
.5-10 C 100-5K 3-7 X, Y, Z M, N, O1
10-30 C 100-500 4-8 Y, Z N, O1
.5-10 D 100-500 3-7 Z 01
.5-5 E 100-500 4-8 Z P1
1 dB Maximum Ripple
Center Frequency (Fo)

Q
Range
Fo /
3dB BW

 Shape Factor Impedance Range (Ohms) Insertion Loss (dB) Size Epoxy Size Metal
50KHz .5-10 A 100-5K 1-4 W, X, Y K3, M, N
10-25 A 100-5K 2-5 X, Y, Y1 M, N, N1
25-50 A 100-5K 3-8 Y, Y1 N, N1
.5-10 A1 100-5K 2-5 X, Y, Y1 M, N, N1
10-25 A1 100-5K 3-6 X, Y, Y1 M, N, N1
25-50 A1 100-5K 4-8 Y, Z N, O1
.5-10 B 100-5K 2-5 X, Y, Z M, N, N1
10-25 B 100-5K 3-6 Y, Z N, 01
25-40 B 100-500 4-8 Z P1
.5-10 B1 100-5K 2-5 X, Y, Z M, N, 01
10-25 B1 100-5K 3-6 X, Y, Z M, N, 01
25-35 B1 100-500 3-8 Z P1
.5-10 C 100-5K 2-5 X, Y, Z M, N, 01
10-30 C 100-250 4-8 Y, Z N, O1
.5-10 D 100-500 3-7 Z O1
.5-5 E 100-500 4-8 Z P1
75KHz .5-10 A 100-5K 1-4 W, X, Y K3, M, N
10-25 A 100-5K 2-5 X, Y,  Y1 M, N, N1
25-50 A 100-5K 3-8 Y, Y1 N, N1
.5-10 A1 100-5K 2-5 X, Y, Y1 M, N, N1
10-25 A1 100-5K 3-6 X, Y, Y1 M, N, N1
25-40 A1 100-500 3-8 Y, Z N, O1
.5-10 B 100-5K 2-5 X, Y, Z M, N, O1
10-25 B 100-5K 3-6 YZ N, O1
25-40 B 100-500 3-8 Z P1
.5-10 B1 100-5K 2-5 X, Y, Z M, N, O1
10-25 B1 100-5K 3-6 X, Y, Z M, N, O1
25-35 B1 100-500 3-8 Z P1
.5-10 C 100-5K 2-5 X, Y, Z M, N, 01
10-30 C 100-250 4-8 Y, Z N, 01
.5-10 D 50-250 3-7 Z 01
.5-6 E 50-200 4-8 Z P1
100KHz .5-10 A 100-5K 1-4 W, X, Y K3, M, N
10-25 A 100-5K 2-5 X, Y M, N
25-50 A 100-5K 3-8 Y, Y1 N, N1
.5-10 A1 100-5K 2-5 X, Y, Y1 M, N, N1
10-25 A1 100-5K 3-6 X, Y,Y1 M, N, N1
24-45 A1 50-100 3-8 Y, Z N, 01
.5-10 B 100-5K 2-5 X, X1, Y M, M1, N
10-25 B 50-5K 3-6 Y, Z N. O1
25-40 B 50-150 3-8 Z P1
.5-10 B1 100-5K 2-5 X. Y, Z M, N, 01

 

 

 

 

Custom Bandpass Filters - Series BP
Center Frequency (Fo)

Q
Range
Fo /
3dB BW

 Shape Factor Impedance Range (Ohms) Insertion Loss (dB) Size Epoxy Size Metal
100 KHz

(cont'd)
10-25 B1 100-5K 3-6 X, Y, Z M, N, 01
25-35 B1 50-100 3-8 Z P1
.5-10 C 50-5K 2-5 X, Y, Z M, N, N1
10-30 C 50-100 4-8 Y,  Z N, O1
.5-10 D 50-100 3-7 Z O1
10-12 D 50-100 4-8 Z P1
.5-8 E 50-100 4-8 Z P1
200 KHz .5-10 A 50-5K 1-4 W, X, X1 K3, M, M1
10-25 A 50-5K 2-5 W, X, Y K3, M, N
25-50 A 50-5K 3-8 X1, Y, Y1 M1, N, N1
.5-10 A1 50-5K 2-5 X, Y, Y1 M, N, N1
10-25 A1 50-5K 3-6 X, Y M, N
25-35 A1 50-5K 3-8 Y, Z N, 01
.5-10 B 50-5K 2-5 X, X1, Y M, M1, N
10-25 B 50-5K 3-6 X, Y, Z M, N, O1
25-30 B 50-100 3-8 Y Z N, O1
.5-10 B1 50-5K 2-5 X, Y, Z M, N, O1
10-25 B1 50-5K 3-6 Y, Z N, O1
25-30 B1 50-100 3-8 Y, Z N, O1
.5-10 C 50-5K 2-5 X, Y, Z M, N, O1
10-25 C 50-100 4-8 Y, Z N, O1
.5-10 D 50-100 3-7 Y, Z N, O1
10-12 D 50-100 4-8 Z 01
.5-8 E 50-100 4-8 Z P1
300 KHz .5-10 A 50-5K 1-4 W, X, X1 K3, M, M1
10-25 A 50-5K 2-5 W, X, Y K3, M, N
25-50 A 50-5K 3-8 Y, Y1 N, N1
.5-10 A1 50-5K 2-5 X, X1, Y M, M1, N
10-25 A1 50-5K 3-6 X, Y M, N
25-40 A1 50-5K 3-8 Y, Z N, O1
.5-10 B 50-5K 2-5 X, Y Y1 M, N, N1
10-25 B 50-5K 3-6 X, Y, Z M, N, O1
25-30 B 50-100 3-8 Y, Z N, 01
.5-10 B1 50-5K 2-5 X, Y, Z M, N, O1
10-25 B1 50-5K 3-6 Y, Z N, O1
.5-10 C 50-2K 2-5 X, Y, Z M, N, O1
10-15 C 50-100 4-8 Y, Z N, O1
.5-10 D 50-100 3-7 Y, Z N, O1
.5-6 E 50-100 4-8 Z P1
Center Frequency (Fo)

Q
Range
Fo /
3dB BW

 Shape Factor Impedance Range (Ohms) Insertion Loss (dB) Size Epoxy Size Metal
400 KHz .5-10 A 50-5K 1-4 W, X, X1 K3, M, M1
10-25 A 50-5K 2-5 W, X, Y K3, M, N
25-50 A 50-5K 3-8 Y,  Y1 N, N1
.5-10 A1 50-5K 2-5 X, Y M, N
10-25 A1 50-5K 3-6 X, Y M, N
25-40 A1 50-2K 3-8 Y, Z N, O1
.5-10 B 50-5K 2-5 X, Y M, N
10-25 B 50-5K 3-6 X, Y, Z M, N, O1
.5-10 B1 50-5K 2-5 X, Y, Z M, N, 01
10-25 B1 50-5K 3-6 Y, Z N, O1
.5-10 C 50-2K 2-5 X, Y, Z M, N
10-12 C 50-100 4-8 Y, Z N, O1
.5-10 D 50-100 3-7 Y, Z N, O1
.5-6 E 50-100 4-8 Z P1
500 KHz .5-10 A 50-5K 1-4 W, X, X1 K3, M, M1
10-25 A 50-5K 2-5 W, X, Y K3, M, N
25-50 A 50-5K 3-8 Y, Y1 N, N1
.5-10 A1 50-5K 2-5 X, Y M, N
10-25 A1 50-5K 3-6 X, Y M, N
25-40 A1 50-2K 3-8 Y, Z N, 01
,5-10 B 50-5K 2-5 X, Y M, N
10-25 B 50-5K 3-6 X, Y, Z M, N, O1
.5-10 B1 50-5K 2-5 X, YZ M, N, O1
10-25 B1 50-5K 3-6 Y, Z N, O1
.5-10 C 50-2K 2-5 X, Y, Z M, N, 01
10-12 C 50-100 4-8 Y, Z N, O1
.5-8 D 50-100 3-7 Y, Z N, O1
.5-5 E 50-100 4-8 Z —
750 KHz 45-50 AO 50-2K 10 Max. Y1 N1
.5-10 A 50-5K 1-4 W, X, X1 K3, M, M1
10-25 A 50-5K 2-5 W, X, Y K3, M, N
25-45 A 50-5K 3-8 Y Y1 N, N1
.5-10 A1 50-5K 2-5 X, Y M, N
10-25 A1 50-5K 3-6 X, Y M, N
25-40 A1 50-5K 3-8 Y, Z N, O1
.5-10 B 50-5K 2-5 X, Y M, N
10-25 B 50-5K 3-6 X, Y, Z M, N, 01
.5-10 B1 50-5K 2-5 X, Y, Z M, N. 01
10-25 B1 50-5K 3-6 Y, Z N. O1
.5-10 C 50-2K 2-5 X, Y, Z M. N. O1

 

 

 

 

 

   
Custom Bandpass Filters - Series BP
Center Frequency (Fo)

Q
Range
Fo /
3dB BW

 Shape Factor Impedance Range (Ohms) Insertion Loss (dB) Size Epoxy Size Metal
750 KHz
(cont'd)		 .5-5 D 50-100 3-7 Y, Z N, 01
.5-3 E 50-100 4-8 Z P1
1 MHz 40-50 AO 50-100 10 Max. — N. O
.5-10 A 50-5K 1-4 W. X. X1 K3. M. M1
10-25 A 50-500 2-5 W. X, Y K3. M. M1
25-40 A 50-200 3-8 — M. N. 0
.5-10 A1 50-2K 1-4 X, Y M. N
10-25 A1 50-200 2-5 X, Y M. N
25-40 A1 50-100 3-7 — M. N
.5-10 B 50-5K 2-5 X, Y M. N
10-25 B 50-100 3-8 — M. N. O
.5-10 B1 50-5K 2-5 X,Y M. N
10-25 B1 50-100 3-8 — M. N. O
.5-5 C 50-100 2-5 — M. N. O
5-10 C 50-100 3-6 — O. P. P1
.5-10 D 50 3-7 — P1
.5-5 E 50 3-7 — P1
2 MHz 40-50 AO 50 10 Max. — N. 0
.5-10 A 50-500 1-4 — K3. M. N
10-25 A 50-200 2-5 — M. N. O
25-40 A 50-100 3-8 — M. N. O
.5-10 A1 50-500 1-4 — K3. M. N
10-25 A1 50-200 2-5 — M, N. O
25-40 A1 50-100 3-7 — M. N. O
.5-10 B 50-500 2-5 — M. N. O
10-25 B 50-100 3-8 — N. O. P
.5-10 B1 50-500 2-5 — M. N. O
10-20 B1 50-100 3-8 — N. O. P
.5-5 C 50-100 2-5 — M, N. O
5-10 C 50-100 3-6 — N. O. P
.5-10 D 50 3-8 _ P. P1
.5-5 E 50 3-7 — P. P1
Center Frequency (Fo)

Q
Range
Fo /
3dB BW

 Shape Factor Impedance Range (Ohms) Insertion Loss (dB) Size Epoxy Size Metal
3 MHz 40-50 AO 50 10 Max. — N. 0
.5-10 A 50-500 1-4 — K3. M, N
10-25 A 50-200 2-5 — M. N. 0
25-40 A 50-100 3-8 — M. N. O
.5-10 A1 50-500 1-4 — K3. M. N
10-25 A1 50-200 2-5 — M. N. O
25-35 A1 50-100 3-7 — M, N. O
.5-10 B 50-500 2-5 — M. N. O
10-20 B 50-200 3-8 — N, O. P
.5-10 B1 50-200 2-5 — M. N. O
10-15 B1 50-100 3-6 — N. O. P
.5-5 C 50-100 2-5 — M. N. O
5-10 C 50-100 3-6 — N. O. P
.5-8 D 50 3-8 — P. P1
.5-5 E 50 3-7 — P. P1
4 MHz 35-50 AO 50 10 Max. — N. O
.5-10 A 50-200 1-4 — K3. M. N
10-25 A 50-100 2-5 — M. N. O
25-35 A 50 3-8 — M. N. O
.5-10 A1 50-200 1-4 — K3. M. N
10-25 A1 50-100 2-5 — M. N. O
25-30 A1 50 3-7 — M. N, O
.5-10 B 50-100 2-5 — M, N. O
10-20 B 50 3-8 — N. O. P
.5-10 B1 50-100 2-5 — M. N. O
10-15 B1 50 3-8 — N. O. P
.5-5 C 50 2-5 — M. N. O
5-10 C 50 3-6 — N. 0. P
.5-5 D 50 3-7 — P. P1
.5-3 E 50 3-7 — P. P1
5 MHz 35-50 AO 50 10 Max. — N. O
.5-10 A 50-100 1-4 — K3. M. N
10-25 A 50 2-5 — M. N. 0
25-35 A 50 3-8 — M. N. 0
.5-10 A1 50-100 1-4 — L. M. N
10-25 A1 50 2-5 — M. N. 0
25-30 A1 50 3-7 — M. N. O
.5-10 B 50-100 2-5 — M. N. O
10-20 B 50 3-8 — N. O. P
.5-10 B1 50-100 2-5 — M. N. O
10-15 B1 50 3-8 — N. O. P
.5-5 C 50 2-5 — M. N. O
5-10 C 50 3-6 — N. O. P
.5-5 D 50 3-7 — P. P1
.5-3 E 50 3-7 — P. P1

 

Allen Avionics, Inc.
255 East Second Street, Mineola, NY  11501
Phone: (516) 248-8080 Fax: (516) 747-6724
E-Mail: Info@AllenAvionics.com