Band Reject - Custom LC Filter
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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: 500 Hz to 150 MHz

  • Impedance Range: 50 Ohms to 2.5K Ohms

  • 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 500 Hz to 150 MHz. Interpolation between tabulated Center Frequencies and Bandwidth is allowable.

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

Encapsulated in Epoxy Case

L

W

H

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 Band Reject Filters - Series BR
Center Frequency (Fo)

Q
Range
F
o /
3dB BW

Shape Factor Impedance Range (Ohms) Insertion Loss (dB)
Typical

Size

Epoxy Metal
500 Hz 1-7 A 1K 1 Y1 N1
1-5 A 500 - 1K 1 Y1 N1
1 KHz 5-10 A 1K 2 Z O1
1-7 B 500 - 1K 3 Y1
5 KHz 1-5 A 500 - 1.5K 1 Y1 N1
5-12 A 1K 3 Z O1
1-5 B 500 - 1.5K 1 Z
5-8 B 1K 2 Z
10 KHz 1-5 A 500-2K 1 Y1 N1
5-10 A 500- 1K 2 Y1 N1
10-15 A 1K 3 Z 01
1-5 B 500- 1K 2 Z
5-10 B 1K 3 Z
1-3 C 500- 1K 1 Z
25 KHz 1-5 A 500-2K 1 Y N
5-10 A 1K 2 Y1 N1
10-18 A 1K 3 2 01
1-5 B 500-2K 1 Y1 N1
5-12 B 1K 2 Z 01
1-4 C 500-1. 5K 3 Z
50 KHz 1-5 A 250-2K 1 Y N
5-10 A 500- 1K 2 Y1 N1
10-25 A 500-600 3 Z 01
1-5 B 250-1.5K 1 Y1 N1
5-10 B 500- 1K 2 Z O1
10-20 B 500-600 3 Z
1-5 C 500-1.5K 1 Z
5-8 C 500- 1K 3 Z
100 KHz 1-5 A 100-25K 1 X M
5-10 A 200- 1K 2 X1 M1
10-30 A 500-600 3 Y N
1-5 B 100-2K 1 Y1 N1
5-10 B 250- 1K 2 Y1 N1
10-25 B 500-600 3 Z O1
1-5 C 100-2K 1 Z
5-10 C 500-600 2 Z
250 KHz 1-5 A 50- 1K 1 W K3
5-10 A 100-500 2 X M
10-25 A 100-250 3 X1 M1
1-5 B 75-600 1 Y N
5-10 B 100-500 2 Y1 N1
10-20 B 100-250 3 Y1 N1
1-5 C 100-500 1 Y1 N1
5-8 C 100 2 Z 01
500 KHz 1-5 A 50-500 1 W K3
5-15 A 50-250 2 X M
10-12 A 100 3 X1 M1
1-5 B 50-500 1 Y N
5-12 B 75-100 2 Y1 N1
1-5 C 50-250 1 Z O1
750 KHz 1-5 A 50-200 1 Y N
5-10 A 75-100 2 Y1 N1
1-5 B 50-150 1 Y1 N1
5-7 B 75-100 2 N1
1-4 C 50-100 1 O1
1 MHz 1-5 A 50-150 1 M
5-10 A 75-100 2 M1
10-12 A 100 3 N
1-5 B 50-150 1 N
5-8 B 75-100 2 N1
1-5 C 50-100 3 O
Center Frequency (Fo)

Q
Range
F
o /
3dB BW

Shape Factor Impedance Range (Ohms) Insertion Loss (dB)
Typical

Size

Epoxy Metal
2.5 MHz 1-5 A 50-150 1 M
5-10 A 50-75 2 M1
10-12 A 75 3 N
1-5 B 50-150 1 N
5-8 B 50-75 2 N1
1-5 C 50-100 3 O
5 MHz 1-5 A 50-100 1 M
5-10 A 50-75 2 N
10-15 A 75 3 O
1-5 B 50-75 1 N1
5-10 B 50-75 2 O
1-5 C 50-75 3 P
7.5 MHz 1-5 A 50-75 1 M
5-10 A 50-75 2 N
10-15 A 75 3 O
1-5 B 50-75 1 N1
5-10 B 75 2 O
1-5 C 50-75 3 P
10MHz 1-5 A 50-75 1 M
5-10 A 50-75 2 N
10-15 A 50-75 3 N
1-5 B 50-75 1 O
5-10 B 50-75 2 O
10-12 B 50-75 3 P
1-5 C 50-75 1 P
15MHz 1-5 A 50-75 1 N
5-10 A 50 2 N
1-5 B 50-75 1 O
5-8 B 50 2 O
1-4 C 50 1 P
20MHz 1-5 A 50 1 N
5-8 A 50 2 O
1-5 B 50 1 P
5-8 B 50 2 P
25MHz 1-5 A 50 1 M
5-8 A 50 2 N
1-5 B 50 1 O
50MHz 1-5 A 50 1 K3
5-8 A 50 2 N
1-5 B 50 2 O
75MHz 1-5 A 50 1 K3
5-8 A 50 2 M
1-5 B 50 2 N
100MHz 1-5 A 50 1 K3
1-5 B 50 2 M
125MHz 1-5 A 50 1 K3
1-4 B 50 2 M
150MHz 1-5 A 50 1 K3
1-3 B 50 2 M
Allen Avionics, Inc.
255 East Second Street, Mineola, NY  11501
Phone: (516) 248-8080 Fax: (516) 747-6724
E-Mail:
Info@AllenAvionics.com