| Dimensions
The length of a tubular
filter is determined by adding the connector dimensions from the table
below. The filter length is obtained from the Length vs. Frequency tables.
Example:
A 5-section bandpass filter Model BC with a center frequency of 300 MHz
and with SMA connectors has a filter dimension of 3.4" and a connector
dimension of 0.8 inches. The total length is 5.0 inches.
|
 |
|
|
Connector
Style |
Connector
Code |
Connector
Dimension (Inches) |
.25
Diameter |
.50
Diameter |
.75
Diameter |
1.25
Diameter |
Figure |
"N"
Female |
N |
NR* |
1.28 |
1.4 |
1.7 |
- |
"N" Male |
NM |
NR* |
1.23 |
1.31 |
1.65 |
- |
BNC
Female |
B |
NR* |
1.0 |
1.35 |
1.42 |
- |
BNC
Male |
BM |
NR* |
.93 |
1.45 |
1.35 |
- |
TNC
Female |
T |
NR* |
1.0 |
1.35 |
1.42 |
- |
TNC
Male |
TM |
NR* |
.93 |
1.45 |
1.35 |
- |
SMA
Female
(Standard) |
S |
.6 |
.8 |
.8 |
.8 |
1 |
SMA
Male
(Standard) |
SM |
.73 |
.85 |
.85 |
.85 |
1 |
SMA
Male
(Right Angle Square) |
EP |
.55 |
.65 |
.65 |
.65 |
2 |
NR
- Not recommended for PC mount
Contact factoy with specific requirements.
Standard connector dimensions are in inches, please use 25.4 to convert
to metric.
BA - Filter Length vs. Frequency |
No. of Sections |
Frequency (MHz) |
200-300 |
300-400 |
400-1000 |
1000-3000 |
3000-4000 |
4000-5000 |
2 |
1.10 |
1.00 |
.90 |
.80 |
.70 |
.50 |
3 |
2.00 |
1.90 |
1.40 |
1.20 |
1.00 |
.70 |
4 |
2.90 |
2.80 |
1.90 |
1.70 |
1.30 |
.90 |
5 |
3.80 |
3.60 |
2.40 |
2.10 |
1.60 |
1.10 |
6 |
4.70 |
4.40 |
2.90 |
2.5 |
1.90 |
1.30 |
7 |
5.60 |
5.20 |
3.40 |
2.90 |
2.20 |
1.60 |
8 |
6.50 |
6.00 |
3.90 |
3.30 |
2.50 |
1.90 |
All dimensions are approximate. Contact factory for actual sizes. All length dimensions are excluding connectors.
BC - Filter Length vs. Frequency |
No. of Sections |
Frequency (MHz) |
75-130 |
130-180 |
180-350 |
350-700 |
700-2500 |
2 |
2.00 |
1.60 |
1.30 |
1.10 |
.90 |
3 |
3.15 |
2.60 |
2.00 |
1.65 |
1.40 |
4 |
4.30 |
3.60 |
2.70 |
2.20 |
1.95 |
5 |
5.45 |
4.55 |
3.40 |
2.70 |
2.45 |
6 |
6.60 |
5.55 |
4.10 |
3.25 |
3.00 |
7 |
7.75 |
6.55 |
4.80 |
3.80 |
3.50 |
8 |
8.90 |
7.55 |
5.50 |
4.35 |
4.00 |
9 |
- |
8.55 |
6.20 |
4.90 |
4.55 |
10 |
- |
9.50 |
6.90 |
5.40 |
5.00 |
All dimensions are approximate. Contact factory for actual sizes. All length dimensions are excluding connectors.
BD - Filter Length vs. Frequency |
No. of Sections |
Frequency (MHz) |
50-140 |
140-230 |
230-500 |
500-1500 |
2 |
2.00 |
1.50 |
1.30 |
1.10 |
3 |
3.00 |
2.25 |
1.85 |
1.60 |
4 |
3.95 |
3.00 |
2.40 |
2.10 |
5 |
4.90 |
3.75 |
2.95 |
2.60 |
6 |
5.90 |
4.50 |
3.50 |
3.10 |
7 |
6.85 |
5.25 |
4.10 |
3.60 |
8 |
7.80 |
6.00 |
4.60 |
4.10 |
9 |
8.80 |
6.75 |
5.15 |
4.60 |
10 |
- |
7.50 |
5.70 |
5.10 |
All dimensions are approximate. Contact factory for actual sizes. All length dimensions are excluding connectors.
BE - Filter Length vs. Frequency |
No. of Sections |
Frequency (MHz) |
50-80 |
80-200 |
200-400 |
400-500 |
2 |
2.80 |
2.40 |
2.00 |
1.60 |
3 |
3.80 |
3.20 |
2.80 |
2.30 |
4 |
4.80 |
4.00 |
3.60 |
3.00 |
5 |
6.00 |
5.20 |
4.40 |
3.80 |
6 |
7.20 |
5.60 |
5.20 |
4.60 |
7 |
8.40 |
6.40 |
6.00 |
5.40 |
8 |
9.60 |
7.20 |
6.80 |
6.20 |
9 |
- |
8.60 |
7.60 |
7.00 |
10 |
- |
- |
8.50 |
7.80 |
All dimensions are approximate. Contact factory for actual sizes. All length dimensions are excluding connectors.
LA - Filter Length vs. Frequency |
No. of Sections |
Frequency (MHz) |
300-600 |
600-1000 |
1000-1300 |
1300-1700 |
1700-2300 |
2300-3000 |
3000-5000 |
5000-20000 |
2 |
.65 |
.55 |
.40 |
.50 |
.45 |
.40 |
.40 |
Contact factory
for exact size at
higher frequencies. |
3 |
1.00 |
.90 |
.70 |
.85 |
.75 |
.70 |
.75 |
4 |
1.45 |
1.25 |
1.00 |
1.20 |
1.10 |
1.00 |
1.50 |
5 |
1.90 |
1.65 |
1.30 |
1.55 |
1.40 |
1.30 |
1.40 |
6 |
2.30 |
2.00 |
1.60 |
1.95 |
1.70 |
1.55 |
1.75 |
7 |
2.75 |
2.40 |
1.90 |
2.30 |
2.00 |
1.85 |
2.10 |
8 |
3.20 |
2.75 |
2.20 |
2.65 |
2.35 |
2.15 |
2.45 |
9 |
3.65 |
3.10 |
2.50 |
3.00 |
2.70 |
2.45 |
2.80 |
10 |
4.10 |
3.50 |
2.80 |
3.35 |
3.00 |
2.75 |
3.10 |
All dimensions are approximate. Contact factory for actual sizes. All length dimensions are excluding connectors.
LC - Filter Length vs. Frequency |
No. of Sections |
Frequency (MHz) |
60-90 |
90-150 |
150-200 |
200-400 |
400-800 |
800-3000 |
2 |
2.10 |
1.80 |
1.55 |
1.10 |
.75 |
.65 |
3 |
3.15 |
2.80 |
2.45 |
1.80 |
1.20 |
1.10 |
4 |
4.20 |
3.85 |
3.40 |
2.55 |
1.70 |
1.50 |
5 |
5.6 |
4.85 |
4.30 |
3.25 |
2.15 |
1.95 |
6 |
6.9 |
5.90 |
5.20 |
3.95 |
2.60 |
2.40 |
7 |
8.3 |
6.95 |
6.15 |
4.70 |
3.00 |
2.80 |
8 |
9.6 |
7.95 |
7.00 |
5.40 |
3.50 |
3.25 |
9 |
10.88 |
8.95 |
8.00 |
6.10 |
3.95 |
3.70 |
10 |
- |
- |
8.90 |
6.80 |
4.40 |
4.10 |
All dimensions are approximate. Contact factory for actual sizes. All length dimensions are excluding connectors.
LD - Filter Length vs. Frequency |
No. of Sections |
Frequency (MHz) |
50-100 |
100-200 |
200-400 |
400-600 |
600-1000 |
1000-2000 |
2 |
2.20 |
2.00 |
1.20 |
1.00 |
.90 |
.80 |
3 |
3.50 |
3.15 |
2.00 |
1.60 |
1.35 |
1.25 |
4 |
4.75 |
4.30 |
2.70 |
2.15 |
1.80 |
1.65 |
5 |
6.00 |
5.40 |
3.40 |
2.70 |
2.25 |
2.00 |
6 |
7.30 |
6.50 |
4.10 |
3.25 |
2.70 |
2.45 |
7 |
8.60 |
7.65 |
4.90 |
3.85 |
3.15 |
2.85 |
8 |
- |
8.75 |
5.55 |
4.40 |
3.60 |
3.30 |
9 |
- |
- |
6.40 |
5.00 |
4.00 |
3.70 |
10 |
- |
- |
7.00 |
5.50 |
4.50 |
4.10 |
All dimensions are approximate. Contact factory for actual sizes. All length dimensions are excluding connectors.
LE - Filter Length vs. Frequency |
No. of Sections |
Frequency (MHz) |
50-80 |
80-200 |
200-600 |
600-1000 |
2 |
2.40 |
2.00 |
1.30 |
1.00 |
3 |
3.55 |
2.85 |
2.00 |
1.55 |
4 |
4.75 |
3.70 |
2.60 |
2.00 |
5 |
6.00 |
4.55 |
3.25 |
2.60 |
6 |
7.15 |
5.40 |
3.90 |
3.10 |
7 |
8.35 |
6.25 |
4.55 |
3.65 |
8 |
9.50 |
7.10 |
5.20 |
4.20 |
9 |
- |
7.95 |
5.85 |
4.70 |
10 |
- |
8.80 |
6.50 |
5.20 |
All dimensions are approximate. Contact factory for actual sizes. All length dimensions are excluding connectors.
Top of Page >
