Rotary Step Attenuators
Wide Choice of Attenuation &
Frequency Ranges & Step Sizes ✧ Low VSWR ✧ High Reliability and Repeatable Performance ✧ High Accuracy ✧ High Stability
RF & Microwave Transmitter ✧ Spectrum Analyzer ✧ Laboratory Test and Measurement
| Model Number | Impedance (Ω) | Frequency Range (GHz) | Attenuation Range (dB) | Step Size (dB) | VSWR (Max) | Insertion Loss (dB, Max) | Average Power (W) | Connectors | Operating Temp. (Deg. C) | Dimensions (mm) |
| XWSA6330-2.5-1-Y | 50 | DC~2.5 | 0~1 | 0.1 | 1.25 | 0.5 | 2 or 10 | SMA or N | －20~＋85 | 63×Ø30 |
| XWSA6330-3-1-Y | 50 | DC~3 | 0~1 | 0.1 | 1.3 | 0.5 | 2 or 10 | SMA or N | －20~＋85 | 63×Ø30 |
| XWSA6330-4.3-1-Y | 50 | DC~4.3 | 0~1 | 0.1 | 1.35 | 0.75 | 2 or 10 | SMA or N | －20~＋85 | 63×Ø30 |
| XWSA6330-6-1-Y | 50 | DC~6 | 0~1 | 0.1 | 1.4 | 1.0 | 2 or 10 | SMA or N | －20~＋85 | 63×Ø30 |
| XWSA6330-2.5-10-Y | 50 | DC~2.5 | 0~10 | 1 | 1.25 | 0.4 | 2 or 10 | SMA or N | －20~＋85 | 63×Ø30 |
| XWSA6330-3-10-Y | 50 | DC~3 | 0~10 | 1 | 1.3 | 0.5 | 2 or 10 | SMA or N | －20~＋85 | 63×Ø30 |
| XWSA6330-4.3-10-Y | 50 | DC~4.3 | 0~10 | 1 | 1.35 | 0.75 | 2 or 10 | SMA or N | －20~＋85 | 63×Ø30 |
| XWSA6330-6-10-Y | 50 | DC~6 | 0~10 | 1 | 1.4 | 1.0 | 2 or 10 | SMA or N | －20~＋85 | 63×Ø30 |
| XWSA6330-2.5-60-Y | 50 | DC~2.5 | 0~60 | 10 | 1.25 | 0.4 | 2 or 10 | SMA or N | －20~＋85 | 63×Ø30 |
| XWSA6330-3-60-Y | 50 | DC~3 | 0~60 | 10 | 1.3 | 0.5 | 2 or 10 | SMA or N | －20~＋85 | 63×Ø30 |
| XWSA6330-4.3-60-Y | 50 | DC~4.3 | 0~60 | 10 | 1.35 | 0.75 | 2 or 10 | SMA or N | －20~＋85 | 63×Ø30 |
| XWSA6330-6-60-Y | 50 | DC~6 | 0~60 | 10 | 1.4 | 1.0 | 2 or 10 | SMA or N | －20~＋85 | 63×Ø30 |
| XWSA6330-2.5-90-Y | 50 | DC~2.5 | 0~90 | 10 | 1.25 | 0.4 | 2 or 10 | SMA or N | －20~＋85 | 63×Ø30 |
| XWSA6330-3-90-Y | 50 | DC~3 | 0~90 | 10 | 1.3 | 0.5 | 2 or 10 | SMA or N | －20~＋85 | 63×Ø30 |
| XWSA12030-2.5-11-Y | 50 | DC~2.5 | 0~11 | 0.1 | 1.45 | 1.0 | 2 or 10 | SMA or N | －20~＋85 | 120×Ø30 |
| XWSA12030-3-11-Y | 50 | DC~3 | 0~11 | 0.1 | 1.45 | 1.2 | 2 or 10 | SMA or N | －20~＋85 | 120×Ø30 |
| XWSA12030-4.3-11-Y | 50 | DC~4.3 | 0~11 | 0.1 | 1.55 | 1.5 | 2 or 10 | SMA or N | －20~＋85 | 120×Ø30 |
| XWSA12030-6-11-Y | 50 | DC~6 | 0~11 | 0.1 | 1.6 | 1.8 | 2 or 10 | SMA or N | －20~＋85 | 120×Ø30 |
| XWSA12030-2.5-50-Y | 50 | DC~2.5 | 0~50 | 1 | 1.35 | 1.0 | 2 or 10 | SMA or N | －20~＋85 | 120×Ø30 |
| XWSA12030-2.5-70-Y | 50 | DC~2.5 | 0~70 | 1 | 1.45 | 1.0 | 2 or 10 | SMA or N | －20~＋85 | 120×Ø30 |
| XWSA12030-3-70-Y | 50 | DC~3 | 0~70 | 1 | 1.45 | 1.2 | 2 or 10 | SMA or N | －20~＋85 | 120×Ø30 |
| XWSA12030-4.3-70-Y | 50 | DC~4.3 | 0~70 | 1 | 1.55 | 1.5 | 2 or 10 | SMA or N | －20~＋85 | 120×Ø30 |
| XWSA12030-6-70-Y | 50 | DC~6 | 0~70 | 1 | 1.6 | 1.8 | 2 or 10 | SMA or N | －20~＋85 | 120×Ø30 |
| XWSA12030-2.5-100-Y | 50 | DC~2.5 | 0~100 | 1 | 1.45 | 1.0 | 2 or 10 | SMA or N | －20~＋85 | 120×Ø30 |
| XWSA12030-3-100-Y | 50 | DC~3 | 0~100 | 1 | 1.45 | 1.2 | 2 or 10 | SMA or N | －20~＋85 | 120×Ø30 |
| XWSA19087-2.5-11-N | 50 | DC~2.5 | 0~11 | 0.1 | 1.4 | 1.2 | 2 or 10 | N | －20~＋85 | 190.5×87×79 |
| XWSA19087-3-11-N | 50 | DC~3 | 0~11 | 0.1 | 1.45 | 1.2 | 2 or 10 | N | －20~＋85 | 190.5×87×79 |
| XWSA19087-4.3-11-N | 50 | DC~4.3 | 0~11 | 0.1 | 1.5 | 1.5 | 2 or 10 | N | －20~＋85 | 190.5×87×79 |
| XWSA19087-6-11-N | 50 | DC~6 | 0~11 | 0.1 | 1.65 | 1.8 | 2 or 10 | N | －20~＋85 | 190.5×87×79 |
| XWSA19087-2.5-70-N | 50 | DC~2.5 | 0~70 | 1 | 1.4 | 1.2 | 2 or 10 | N | －20~＋85 | 190.5×87×79 |
| XWSA19087-3-70-N | 50 | DC~3 | 0~70 | 1 | 1.45 | 1.2 | 2 or 10 | N | －20~＋85 | 190.5×87×79 |
| XWSA19087-4.3-70-N | 50 | DC~4.3 | 0~70 | 1 | 1.5 | 1.5 | 2 or 10 | N | －20~＋85 | 190.5×87×79 |
| XWSA19087-6-70-N | 50 | DC~6 | 0~70 | 1 | 1.65 | 1.8 | 2 or 10 | N | －20~＋85 | 190.5×87×79 |
| XWSA19087-2.5-100-N | 50 | DC~2.5 | 0~100 | 1 | 1.4 | 1.2 | 2 or 10 | N | －20~＋85 | 190.5×87×79 |
| XWSA19087-3-100-N | 50 | DC~3 | 0~100 | 1 | 1.45 | 1.2 | 2 or 10 | N | －20~＋85 | 190.5×87×79 |
| XWSA25087-2.5-71-N | 50 | DC~2.5 | 0~71 | 0.1 | 1.5 | 1.5 | 2 or 10 | N | －20~＋85 | 250.5×87×79 |
| XWSA25087-3-71-N | 50 | DC~3 | 0~71 | 0.1 | 1.6 | 1.7 | 2 or 10 | N | －20~＋85 | 250.5×87×79 |
| XWSA25087-4.3-71-N | 50 | DC~4.3 | 0~71 | 0.1 | 1.7 | 2.0 | 2 or 10 | N | －20~＋85 | 250.5×87×79 |
| XWSA25087-6-71-N | 50 | DC~6 | 0~71 | 0.1 | 1.75 | 2.5 | 2 or 10 | N | －20~＋85 | 250.5×87×79 |
| XWSA25087-2.5-101-N | 50 | DC~2.5 | 0~101 | 0.1 | 1.5 | 1.5 | 2 or 10 | N | －20~＋85 | 250.5×87×79 |
| XWSA25087-3-101-N | 50 | DC~3 | 0~101 | 0.1 | 1.6 | 1.7 | 2 or 10 | N | －20~＋85 | 250.5×87×79 |
| XWSA9748-8-9-S | 50 | DC~8 | 0~9 | 1 | 1.4 | 0.8 | 2 or 10 | SMA | －20~＋85 | 97×Ø48 |
| XWSA9748-12.4-9-S | 50 | DC~12.4 | 0~9 | 1 | 1.5 | 1.0 | 2 or 10 | SMA | －20~＋85 | 97×Ø48 |
| XWSA9748-18-9-S | 50 | DC~18 | 0~9 | 1 | 1.6 | 1.2 | 2 or 10 | SMA | －20~＋85 | 97×Ø48 |
| XWSA10848-8-90-S | 50 | 0.1~8 | 0~90 | 10 | 1.4 | 0.8 | 2 or 10 | SMA | －20~＋85 | 108.5×Ø48 |
| XWSA10848-12.4-90-S | 50 | 0.1~12.4 | 0~90 | 10 | 1.5 | 1.0 | 2 or 10 | SMA | －20~＋85 | 108.5×Ø48 |
| XWSA10848-18-90-S | 50 | 0.1~18 | 0~90 | 10 | 1.6 | 1.2 | 2 or 10 | SMA | －20~＋85 | 108.5×Ø48 |
| XWSA16348-8-69-S | 50 | DC~8 | 0~69 | 1 | 1.5 | 1.0 | 2 or 5 | SMA | 0~＋54 | 163×Ø48 |
| XWSA16348-12.4-69-S | 50 | DC~12.4 | 0~69 | 1 | 1.6 | 1.25 | 2 or 5 | SMA | 0~＋54 | 163×Ø48 |
| XWSA16348-18-69-S | 50 | DC~18 | 0~69 | 1 | 1.75 | 1.5 | 2 or 5 | SMA | 0~＋54 | 163×Ø48 |
| XWSA16348-8-99-S | 50 | 0.1~8 | 0~99 | 1 | 1.5 | 1.0 | 2 or 5 | SMA | 0~＋54 | 163×Ø48 |
| XWSA16348-12.4-99-S | 50 | 0.1~12.4 | 0~99 | 1 | 1.6 | 1.25 | 2 or 5 | SMA | 0~＋54 | 163×Ø48 |
| XWSA16348-18-99-S | 50 | 0.1~18 | 0~99 | 1 | 1.75 | 1.5 | 2 or 5 | SMA | 0~＋54 | 163×Ø48 |
| XWSA10683-8-69-Y | 50 | DC~8 | 0~69 | 1 | 1.5 | 1.25 | 2 or 10 | SMA, N, or 3.5mm | 0~＋54 | 2W: 115×106×83 10W: 126×106×83 |
| XWSA10683-12.4-69-Y | 50 | DC~12.4 | 0~69 | 1 | 1.6 | 1.5 | 2 or 10 | SMA, N, or 3.5mm | 0~＋54 | 2W: 115×106×83 10W: 126×106×83 |
| XWSA10683-18-69-Y | 50 | DC~18 | 0~69 | 1 | 1.75 | 1.5 | 2 or 10 | SMA, N, or 3.5mm | 0~＋54 | 2W: 115×106×83 10W: 126×106×83 |
| 2WSA10683-26.5-69-3 | 50 | DC~26.5 | 0~69 | 1 | 1.85 | 2.0 | 2 | 3.5mm | 0~＋54 | 2W: 115×106×83 |
| XWSA10683-8-99-Y | 50 | DC~8 | 0~99 | 1 | 1.5 | 1.5 | 2 or 10 | SMA, N, or 3.5mm | 0~＋54 | 2W: 115×106×83 10W: 126×106×83 |
| XWSA10683-12.4-99-Y | 50 | DC~12.4 | 0~99 | 1 | 1.6 | 1.5 | 2 or 10 | SMA, N, or 3.5mm | 0~＋54 | 2W: 115×106×83 10W: 126×106×83 |
| XWSA10683-18-99-Y | 50 | DC~18 | 0~99 | 1 | 1.75 | 1.75 | 2 or 10 | SMA, N, or 3.5mm | 0~＋54 | 2W: 115×106×83 10W: 126×106×83 |
| XWSA66106-18-9-S | 50 | DC~18 | 0~9 | 1 | 1.6 | 1.0 | 2 or 10 | SMA | 0~＋54 | 66×106×83 |
| XWSA66106-26.5-9-Y | 50 | DC~26.5 | 0~9 | 1 | 1.7 | 1.8 | 2 or 10 | SMA or 3.5mm | 0~＋54 | 66×106×83 |
| 10WSA66106-28-9-Y | 50 | DC~28 | 0~9 | 1 | 1.75 | 1.8 | 10 | SMA or 3.5mm | 0~＋54 | 66×106×83 |
| XWSA62106-26.5-60-Y | 50 | DC~26.5 | 0~60 | 10 | 1.75 | 1.8 | 2 or 10 | SMA or 3.5mm | 0~＋54 | 62×106×83 |
| XWSA62106-18-70-S | 50 | DC~18 | 0~70 | 10 | 1.6 | 1.0 | 2, 10 or 25 | SMA | 0~＋54 | 62×106×83 |
| 25WSA66106-26.5-70-Y | 50 | DC~26.5 | 0~70 | 10 | 1.75 | 1.8 | 25 | SMA or 3.5mm | 0~＋54 | 66×106×83 |
| 25WSA66106-28-70-3 | 50 | DC~28 | 0~70 | 10 | 1.75 | 1.8 | 25 | 3.5mm | 0~＋54 | 66×106×83 |
| XWSA62106-8-90-S | 50 | 0.1~8 | 0~90 | 10 | 1.6 | 1.0 | 2 or 10 | SMA | 0~＋54 | 62×106×83 |
| XWSA62106-12.4-90-S | 50 | 0.1~12.4 | 0~90 | 10 | 1.6 | 1.0 | 2 or 10 | SMA | 0~＋54 | 62×106×83 |
| XWSA62106-18-90-S | 50 | 0.1~18 | 0~90 | 10 | 1.6 | 1.0 | 2 or 10 | SMA | 0~＋54 | 62×106×83 |
| 2WSA182106-8-99.9-Y | 50 | DC~8 | 0~99.9 | 0.1 | 1.5 | 1.3 | 2 | SMA, N, or 3.5mm | 0~＋54 | 182.3×106×83 |
| 2WSA182106-12.4-99.9-Y | 50 | DC~12.4 | 0~99.9 | 0.1 | 1.65 | 1.6 | 2 | SMA, N, or 3.5mm | 0~＋54 | 182.3×106×83 |
| 2WSA182106-18-99.9-Y | 50 | DC~18 | 0~99.9 | 0.1 | 2.0 | 1.7 | 2 | SMA, N, or 3.5mm | 0~＋54 | 182.3×106×83 |