Coaxial Circulators
Coaxial Isolators
Drop-In Circulators
Drop-In Isolators
Waveguide Circulators / Isolators
Waveguide Products
- Waveguide Switches
- Straight & Twisted Sections
- Flex & Twistable Sections
- Waveguide Bends
- Waveguide Mitered Bends
- Waveguide Terminations
- Directional Couplers
- Waveguide to Coax Adaptors
- Waveguide Pressure Windows
- Custom Waveguide Assemblies
- Custom Field Install Kits
Couplers & Dividers
- Integrated Iso-Couplers
- Narrow Band Couplers
- Wide Band Couplers
- Microwave Radio Receiver Couplers & Splitters
- Coax Power Dividers
Filters & Diplexers
Standard Circulators

All catalog part numbers are for devices with clockwise rotation, however, counter-clockwise rotation is available by request. Consult the factory for special performance and unique mechanical configurations. We have many other designs no listed in the catalog, and develop new designs on a frequent basis.
Encapsulation is available on some designs for high peak power & high altitude capability.
Low IMD Designs: See Note 13
Note 2: Four Mounting Holes are 0.116 in. Diameter
Note 4: Four Mounting Holes are 0.102 in. Diameter
Note 5: Four Mounting Holes are 0.094 in. Diameter
Note 6: Tab Height is 0.075 in.
Note 8: Tab Height is 0.150 in.
Note 9: Tab Height is 0.120 in.
Note 12: Encapsulated for High Peak Power
Note 13: -70 dBc IMD with 2 Tones at 20W
* Case Temperature Not To Exceed Operating Temperature
Drop-In Circulators - Standard Line
Frequency Range (GHz) | Insertion Loss (Max) (-dB) | VSWR (Max) | Power Rating (Watts) | Operating Temperature °C | Footprint (in x in) | Part Number | Notes | Outline Drawing |
0.400-0.450 | 0.45 | 1.25 | 200 | -40 to +85 | 1.50 x 1.50 | 990-400450-901 | 13 | D39 |
0.740-0.770 | 0.30 | 1.20 | 150 | -40 to +85 | 1.00 x 1.00 | 990-740770-501 | 13 | D08 |
0.764-0.870 | 0.45 | 1.28 | 150 | 0 to +60 | 1.00 x 1.00 | 990-764870-501 | 13 | D08 |
0.790-0.830 | 0.30 | 1.20 | 150 | -10 to +85 | 1.00 x 1.00 | 990-790830-501 | - | D08 |
0.800-0.825 | 0.20 | 1.15 | 200 | -20 to +70 | 1.00 X 1.00 | 990-800825-501 | - | D08 |
0.800-0.960 | 0.40 | 1.28 | 200 | 0 to +85 | 1.00 X 1.00 | 990-800960-501 | - | D08 |
0.800-1.000 | 0.50 | 1.35 | 150 | -20 to +85 | 1.00 X 1.00 | 990-800100-501 | - | D08 |
0.824-0.960 | 0.35 | 1.22 | 200 | -20 to +85 | 1.00 X 1.00 | 990-824960-501 | - | D08 |
0.850-0.960 | 0.40 | 1.12 | 200 | -15 to +65 | 1.00 X 1.00 | 990-850960-501 | - | D08 |
0.860-0.870 | 0.25 | 1.18 | 200 | -10 to +70 | 1.00 X 1.00 | 890-860870-501 | - | D02 |
0.869-0.894 | 0.25 | 1.18 | 200 | -10 to +70 | 1.00 X 1.00 | 890-869894-501 | - | D02 |
0.925-0.960 | 0.25 | 1.18 | 200 | -10 to +70 | 1.00 X 1.00 | 890-925960-501 | - | D02 |
0.960-1.230 | 0.60 | 1.42 | 100 | -40 to +85 | 1.00 X 1.00 | 990-960123-501 | - | D08 |
1.010-1.100 | 0.30 | 1.22 | 100 | -40 to +85 | 1.00 X 1.00 | 990-101110-501 | - | D08 |
1.030-1.090 | 0.40 | 1.22 | 100 | -40 to +85 | 1.00 X 1.00 | 990-103109-503 | 12 | D08 |
1.200-1.400 | 0.25 | 1.20 | 150 | -40 to +85 | 1.00 X 1.00 | 990-120140-501 | - | D08 |
1.520-1.660 | 0.30 | 1.20 | 150 | -20 to +70 | 1.00 X 1.00 | 890-152166-501 | - | D02 |
1.600-1.800 | 0.40 | 1.22 | 100 | -40 to +85 | 0.75 X 0.75 | 990-160180-301 | 4 | D03 |
1.750-1.850 | 0.30 | 1.20 | 220 | -20 to +70 | 1.00 X 1.00 | 990-175185-501 | - | D02 |
1.760-2.170 | 0.40 | 1.25 | 50 | -10 to +85 | 0.75 X 0.75 | 990-176217-301 | - | D03 |
1.700-2.000 | 0.40 | 1.22 | 30 | -40 to +100 | 0.75 X 0.75 | 990-170200-301 | - | D03 |
1.710-1.990 | 0.35 | 1.22 | 75 | -40 to +85 | 0.75 X 0.75 | 990-171199-301 | - | D09 |
1.710-2.170 | 0.40 | 1.22 | 150 | 0 to +70 | 1.00 X 1.00 | 890-171217-501 | - | D02 |
1.800-2.000 | 0.40 | 1.25 | 30 | -40 to +100 | 0.75 X 0.75 | 094-039034-001 | - | D03 |
1.800-2.170 | 0.40 | 1.25 | 50 | -10 to +85 | 0.75 X 0.75 | 990-180217-301 | - | D03 |
1.805-1.880 | 0.25 | 1.20 | 150 | -20 to +70 | 0.75 X 0.75 | 890-180188-301 | - | D01 |
1.805-1.880 | 0.28 | 1.20 | 200 | -20 to +70 | 1.00 X 1.00 | 890-180188-501 | - | D02 |
1.850-1.990 | 0.45 | 1.25 | 70 | -20 to +70 | 0.75 X 0.75 | 890-185199-301 | - | D01 |
1.880-1.920 | 0.20 | 1.20 | 70 | -40 to +100 | 0.75 X 0.75 | 094-039040-002 | - | D03 |
1.900-2.100 | 0.40 | 1.25 | 30 | -40 to +100 | 0.75 X 0.75 | 094-039039-001 | - | D03 |
1.920-2.170 | 0.35 | 1.22 | 70 | -20 to +85 | 0.75 X 0.75 | 990-192217-301 | - | D09 |
1.930-1.990 | 0.25 | 1.25 | 50 | -40 to +100 | 0.75 X 0.75 | 094-039040-001 | - | D03 |
1.930-1.990 | 0.25 | 1.20 | 150 | -20 to +70 | 0.75 X 0.75 | 890-193199-301 | - | D01 |
1.930-1.990 | 0.28 | 1.20 | 200 | -20 to +70 | 1.00 X 1.00 | 890-193199-501 | - | D02 |
1.930-1.990 | 0.30 | 1.18 | 150 | -10 to +85 | 1.00 X 1.00 | 994-039064-005 | 2, 8 | D04 |
2.000-2.300 | 0.30 | 1.25 | 75 | -20 to +85 | 0.75 X 0.75 | 990-200230-301 | - | D09 |
2.000-2.150 | 0.30 | 1.20 | 70 | -30 to +85 | 0.75 X 0.75 | 994-039029-015 | - | D03 |
2.050-2250 | 0.33 | 1.22 | 100 | -20 to +70 | 0.75 X 0.75 | 890-205225-301 | - | D01 |
2.090-2.190 | 0.25 | 1.20 | 150 | -30 to +85 | 1.00 X 1.00 | 994-039067-003 | - | D04 |
2.100-2.200 | 0.25 | 1.20 | 150 | -30 to +85 | 1.00 X 1.00 | 994-039067-002 | - | D04 |
2.100-2.200 | 0.30 | 1.22 | 100 | -20 to +85 | 0.75 X 0.75 | 990-210220-301 | - | D09 |
2.100-2.300 | 0.40 | 1.25 | 70 | -40 to +100 | 0.75 X 0.75 | 094-039033-013 | - | D03 |
2.110-2.170 | 0.23 | 1.20 | 50 | -40 to +100 | 0.75 X 0.75 | 994-039038-051 | - | D03 |
2.110-2.170 | 0.28 | 1.17 | 100 | -20 to +70 | 0.75 X 0.75 | 890-211217-301 | - | D01 |
2.200-2.300 | 0.30 | 1.25 | 70 | -30 to +70 | 0.75 X 0.75 | 994-039029-011 | 4 | D03 |
2.200-2.500 | 0.40 | 1.25 | 70 | -20 to +85 | 0.75 X 0.75 | 990-220250-301 | - | D09 |
2.250-2.280 | 0.30 | 1.25 | 70 | -30 to +70 | 0.75 X 0.75 | 994-039029-013 | 4 | D03 |
2.300-2.400 | 0.26 | 1.20 | 70 | -20 to +70 | 0.75 X 0.75 | 890-230240-303 | - | D01 |
2.400-2.500 | 0.25 | 1.22 | 75 | -10 to +85 | 0.75 X 0.75 | 990-240250-301 | - | D09 |
2.400-2.700 | 0.30 | 1.25 | 70 | -10 to +75 | 0.75 X 0.75 | 094-039037-003 | 5 | D03 |
3.300-3.800 | 0.30 | 1.22 | 50 | -40 to +85 | 0.75 X 0.75 | 990-330380-301 | - | D09 |
3.400-3.600 | 0.35 | 1.25 | 100 | -40 to +85 | 0.75 X 0.75 | 994-037063-015 | 5, 13 | D03 |
3.475-3.600 | 0.35 | 1.22 | 50 | -40 to +85 | 0.75 X 0.75 | 990-347360-301 | - | D09 |
3.700-3.900 | 0.35 | 1.25 | 50 | -40 to +85 | 0.75 X 0.75 | 990-370390-301 | - | D09 |
4.400-5.100 | 0.40 | 1.28 | 20 | -20 to +70 | 0.50 x 0.50 | 990-440510-203 | 9 | D06 |
4.500-4.800 | 0.40 | 1.22 | 50 | -30 to +70 | 0.75 X 0.75 | 994-039063-006 | 5, 6 | D03 |
4.625-4.725 | 0.30 | 1.22 | 50 | 0 to +85 | 0.50 x 0.50 | 990-462472-201 | - | D06 |
5.150-5.825 | 0.40 | 1.14 | 50 | -40 to +85 | 0.375 x 0.500 | 994-039052-009 | - | D05 |
5.200-5.900 | 0.35 | 1.20 | 50 | -40 to +85 | 0.50 x 0.50 | 990-520590-203 | 9 | D06 |
5.700-5.900 | 0.40 | 1.14 | 50 | -40 to +85 | 0.375 x 0.500 | 990-570590-101 | - | D05 |
5.725-5.850 | 0.30 | 1.22 | 50 | 0 to +85 | 0.50 x 0.50 | 990-572582-201 | - | D06 |
5.800-6.700 | 0.40 | 1.25 | 25 | -40 to +100 | 0.50 x 0.50 | 094-039042-004 | - | D06 |
5.800-7.100 | 0.40 | 1.25 | 50 | -40 to +85 | 0.350 x 0.475 | 990-580710-901 | - | D07 |
6.700-7.500 | 0.40 | 1.22 | 30 | -40 to +85 | 0.50 x 0.50 | 990-670750-203 | - | D06 |
7.100-7.900 | 0.50 | 1.25 | 25 | -40 to +85 | 0.50 x 0.50 | 990-710790-201 | - | D06 |
13.500-14.500 | 0.40 | 1.18 | 10 | -40 to +85 | 0.350 x 0.475 | 990-135145-901 | - | D07 |