Coaxial Passive Components
Fixed Attenuators
Attenuators are used in a wide variety of applications and can satisfy almost any requirement where a reduction in power is needed. Attenuators are used to extend the dynamic range of devices such as power meters and amplifiers, reduce signal levels to detectors, match circuits and are used daily in lab applications to aid in product design. Attenuators are also used to balance out transmission lines that otherwise would have unequal signal levels.
Specifications
Input Power Attenuated |
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| dB | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 20 | 30 | 40 |
| % | 20.57 | 36.90 | 49.88 | 60.19 | 68.38 | 74.88 | 80.05 | 84.15 | 87.41 | 90.00 | 99.00 | 99.90 | 99.99 |
Convenient Electrical Conversions |
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| VSWR | 1.05:1 | 1.10:1 | 1.15:1 | 1.20:1 | 1.25:1 | 1.30:1 | 1.35:1 | 1.40:1 | 1.50:1 | 2.00:1 |
| Return Loss (-dB) | 32.256 | 26.444 | 23.127 | 20.828 | 19.085 | 17.692 | 16.540 | 15.563 | 13.979 | 9.542 |
| Voltage Reflection Coeff. | 0.024 | 0.048 | 0.070 | 0.091 | 0.111 | 0.130 | 0.149 | 0.167 | 0.200 | 0.333 |
| Match Efficiency (%) | 99.94 | 99.97 | 99.51 | 99.17 | 98.77 | 98.30 | 97.78 | 97.22 | 96.00 | 88.89 |
| Mismatch Loss (-dB) | 0.003 | 0.010 | 0.021 | 0.036 | 0.054 | 0.075 | 0.097 | 0.122 | 0.177 | 0.512 |
For best results when selecting an RF attenuator for a given connector style, make sure to consider the amount of power being absorbed and the acceptable level of reflection (VSWR) that can be tolerated over the operating frequency range.
7-16 DIN Attenuators |
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| Part No. | Model | Average Power (Watts) | Peak Power (Watts) | Attenuation Value (dB) | Freq. (GHz) | VSWR (Max) | Attenuation Tolerance | Length (in) Diameter (in) Weight (g) | ||
| 603-dB-11 |  |
5 | 250 | 3, 6 dB 10, 20 dB 30 dB |
DC-2.5 | 1.20:1 | ± 0.30 dB ± 0.50 dB ± 0.75 dB |
L=2.98 D=7/16 DIN W=220 |
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| 606-dB-11 |  |
10 | 2000 | 3, 6 dB 10, 20 dB 30 dB |
DC-2.5 | 1.20:1 | ± 0.30 dB ± 0.50 dB ± 0.75 dB |
L=3.48 D=7/16 DIN W=213 |
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Type-N Attenuators |
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| Part No. | Model | Average Power (W) | Peak Power (W) | Attenuation Value (dB) | Freq. (GHz) | VSWR (Max) | Attenuation Tolerance | Length (in) Diameter (in) Weight (g) | ||
| 612-dB-1 |  |
2 | 1000 | 3, 6, 10, 20 dB 30 dB** |
DC-2.0 2.0-4.0 DC-2.0 2.0-4.0 |
1.15:1 1.25:1 1.25:1 1.35:1 |
± 0.6 dB ± 0.8 dB ± 1.0 dB ± 1.5 dB |
L=2.20 D=0.82 W=80 |
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| 605-dB-1 |  |
2 | 250 | 1, 6 dB 10, 20 dB 30 dB |
DC-4.0 4.0-6.0 |
1.15:1 1.20:1 |
± 0.30 dB ± 0.50 dB ± 0.80 dB |
L=1.76 D=0.62 W=48 |
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| 605-dB-1F18 | |
2 | 250 | 3, 6 dB 10, 20 dB 30, 40 dB |
DC-4.0 4.0-8.0 8.0-12.4 12.4-18.0 |
1.15:1 1.20:1 1.25:1 1.30:1 1.40:1 |
Hz-6.0 GHz; ± 0.30 dB ± 0.50 dB ± 0.80 dB 6.0-18.0 GHz; ± 0.50 dB ± 0.75 dB ± 1.00 dB |
L=1.76 D=0.62 W=2.08 |
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| 615-dB-1 | 2 | 1000 | 40-60 dB 70-90 dB |
DC-2.0 | 1.25:1 | ± 1.50 dB ± 2.00 dB |
L=3.2 D=0.88 W=4.10 |
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| 603-dB-1 |  |
5 | 125 | 1, 6 dB 10, 20 dB 30 dB |
DC-4.0 4.0-6.0 |
1.15:1 1.20:1 |
± 0.30 dB ± 0.50 dB ± 0.75 dB |
L=1.90 D=0.62 W=48 |
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| 606-dB-1F4 |  |
10 | 1000 | 3, 6, 10 & 20 dB 30 dB 3, 6, 10 & 20 dB 30 dB |
DC-1.0 1.0-4.0 |
1.15:1 1.35:1 |
± 0.25 dB ± 0.50 dB ± 0.50 dB ± 0.75 dB |
L=3.15 D=1.25 W=109 |
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| 630-dB-1F4 |  |
20 | 1000 | 3, 6, 10 & 20 dB 30 dB 3, 6, 10 & 20 dB 30 dB |
DC-1.0 1.0-4.0 |
1.15:1 1.35:1 |
± 0.25 dB ± 0.50 dB ± 0.50 dB ± 0.75 dB |
L=3.71 D=1.75 W=140 |
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| 650-dB-1F4 |  |
50 | 1000 | 3, 6, 10 & 20 dB 30 dB 3, 6, 10 & 20 dB 30 dB |
DC-1.0 1.0-4.0 |
1.15:1 1.35:1 |
± 0.25 dB ± 0.50 dB ± 0.50 dB ± 0.75 dB |
L=3.71 D=2.25 W=180 |
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| 690-dB-1 |  |
100 | 1000 | 3, 6, & 10 dB 20, 30 dB |
DC-2.0 2.0-3.0 |
1.20:1 1.30:1 |
± 0.30 dB ± 0.50 dB |
L=8.00 D=3.50 W=3.5 lbs |
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| 697-dB-1 |  |
150 | 1000 | 3, 6, & 10 dB 20, 30 dB |
DC-2.0 2.0-3.0 |
1.30:1 1.40:1 |
± 0.30 dB ± 0.50 dB |
L=7.97 D=5.00 W=5.1 lbs |
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TNC Attenuators |
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| Part No. | Model | Average Power (W) | Peak Power (W) | Attenuation Value (dB) | Freq. (GHz) | VSWR (Max) | Attenuation Tolerance | Length (in) Diameter (in) Weight (g) | ||
| 612-dB-1 |  |
2 | 2000 | 3, 6, 10, 20 dB 30 dB** |
DC-2.2 2.0-4.0 DC-2.2 2.0-4.0 |
1.25:1 1.45:1 1.25:1 1.45:1 |
± 0.75 dB ± 1.25 dB ± 1.25 dB ± 1.5 dB |
L=1.93 W=0.63 |
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Type-SMA Attenuators |
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| Part No. | Model | Average Power (W) | Peak Power (W) | Attenuation Value (dB) | Freq. (GHz) | VSWR (Max) | Attenuation Tolerance | Length (in) Diameter (in) Weight (g) | ||
| 662-dB-1 |  |
2 | 2000 | 3, 6, 10, 20 dB 30 dB** |
DC-2.0 2.0-4.0 DC-2.0 2.0-4.0 |
1.15:1 1.25:1 1.25:1 1.35:1 |
± 0.6 dB ± 0.8 dB ± 1.0 dB ± 1.5 dB |
L=1.31 D=11/35 Hex W=62 |
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| 665-dB-1 |  |
2 | 250 | 0-6 dB 7-20 dB 21-30 dB |
DC-4.0 4.0-8.0 8.0-12.4 12.4-18.0 |
1.15:1 1.20:1 1.25:1 1.25:1 |
± 0.30 dB ± 0.50 dB ± 0.75 dB |
L=0.87 D=0.28 W=4.5 (1-20 db) 5.0 (30 dB) |
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| 665-dB-1H |
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2 | 250 | 0-6 dB 7-20 dB 21-30 dB |
DC-4.0 4.0-8.0 8.0-12.4 12.4-18.0 |
1.15:1 1.20:1 1.25:1 1.35:1 |
± 0.30 dB ± 0.50 dB ± 0.75 dB |
L=0.86 D=0.312 Hex W=4.6 |
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| 602-dB-1 |  |
5 | 125 | 3, 6 dB 10, 20 dB 30 dB |
DC-4.0 4.0-6.0 |
1.15:1 1.20:1 |
± 0.30 dB ± 0.50 dB ± 0.75 dB |
L=1.20 D=0.61 W=8.3 |
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| 604-dB-1 | 10 | 500 | 3, 6 dB 10, 20 dB 30 dB |
DC-6.0 | 1.20:1 | ± 0.30 dB ± 0.50 dB ± 0.70 dB |
L=1.70 D=1.0 W=26 |
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| 631-dB-1F4 |  |
20 | 500 | 3, 6, dB 10, 20 dB 30 dB |
DC-6.0 | 1.20:1 | ± 0.30 dB ± 0.50 dB ± 0.75 dB |
L=2.33 D=1.49 W=74 |
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BNC Attenuators |
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| Part No. | Model | Average Power (W) | Peak Power (W) | Attenuation Value (dB) | Freq. (GHz) | VSWR (Max) | Attenuation Tolerance | Length (in) Diameter (in) Weight (g) | ||
| 612-dB-2 | |
2 | 2000 | 3, 6, 10, 20 dB 30 dB** |
DC-2.2 2.0-4.0 DC-2.2 2.0-4.0 |
1.25:1 1.45:1 1.25:1 1.45:1 |
± 0.75 dB ± 1.25 dB ± 1.25 dB ± 1.50 dB |
L=1.82 D=0.57 W=5.0 |
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QMA Attenuators |
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| Part No. | Model | Average Power (W) | Peak Power (W) | Attenuation Value (dB) | Freq. (GHz) | VSWR (Max) | Attenuation Tolerance | Length (in) Diameter (in) Weight (g) | ||
| 663-dB-1 |  |
2 | 500 | 3, 6, 10, 20 dB 30 dB** |
DC-2.2 2.0-4.0 DC-2.0 2.0-4.0 |
1.15:1 1.25:1 1.25:1 1.35:1 |
± 0.60 dB± 0.80 dB ± 1.00 dB ± 1.50 dB |
L=1.63 D=0.41 11/32 HEX W=0.63 |
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