AT
coaxial fixed attenuators 5…100 W
AT fixed coaxial attenuators: 50 Ω, power 5, 10, 15, 25, 35, 50, 60, 80 and 100 W, bandwidth DC–4…26.5 GHz, attenuation 1–60 dB, N, SMA and 3.5 mm connectors, −55…+125 °C; code model-xx, where xx is the attenuation in dB.
| Characteristic impedance | 50 Ω |
|---|---|
| Power | 5, 10, 15, 25, 35, 50, 60, 80, 100 W at +25…+70 °C |
| Frequency range | DC–4 GHz (AT50-SMA, AT100-SMA) … DC–26.5 GHz (AT25, AT50-3.5) |
| Attenuation | 1–40, 1–50 or 1–60 dB by model |
| Attenuation accuracy | ±0.3…1.2 dB by band (model tables) |
| VSWR | 1.10…1.9 by model and band |
| Connectors | N, SMA, 3.5 mm |
| Operating temperature | −55…+125 °C |
| Ordering code | model-xx: AT10-N-20 — 10 W, N, 20 dB |
About the series
What it is
AT are fixed coaxial attenuators with a heatsink for measurement lines and protection of instrument inputs: 50 Ω, operating temperature −55…+125 °C. The part number consists of the model (power and connector type) and the attenuation: AT10-N-20 — 10 W, N connectors, 20 dB.
Models
- AT5-SMA — 5 W, DC–18 GHz, 1–60 dB, N or SMA connectors (ATS versions by band DC–4, 4–8, 8–12, 10–16 GHz).
- AT10-3.5 — 10 W, DC–16 GHz, 1–60 dB, 3.5 mm connectors; AT10-SMA — 10 W, DC–18 GHz, 1–60 dB; AT10-N — 10 W, DC–18 GHz, 1–40 dB.
- AT15-N — 15 W, DC–18 GHz, 1–40 dB; AT25-SMA and AT25-N — 25 W, DC–26.5 GHz, 1–40 dB; AT30-N — 25 W, DC–18 GHz.
- AT35-N — 35 W, DC–18 GHz, 1–50 dB; AT50-N — 50 W, DC–18 GHz, 1–60 dB; AT50-SMA — 50 W, DC–4 GHz; AT50-3.5 — 50 W, DC–26.5 GHz.
- AT60-N — 60 W, DC–10 GHz, 1–60 dB; AT80-SMA — 80 W, DC–18 GHz, 1–60 dB; AT80-N — 80 W, DC–10 GHz, 1–40 dB; AT100-SMA — 100 W, DC–4 GHz, 1–40 dB.
- Attenuation accuracy per the model tables: from ±0.3 dB (up to 4 GHz) to ±1.2 dB (upper bands); VSWR from 1.10 to 1.9 depending on model and band.
Where it is used
Level matching and input protection for analyzers and receivers, bench measurements of high-power signals, calibration.
Part numbers
Part numbers of this series are configured to order — send the required configuration through the quotation form.
Questions and answers
How is an AT attenuator part number read?
The model defines the power and connector (AT25-SMA — 25 W, SMA), and the last digits after the hyphen are the attenuation in dB: AT25-SMA-30 — 30 dB.
What bandwidths do AT attenuators have?
From DC–4 GHz for the high-power SMA models (AT50-SMA, AT100-SMA) to DC–26.5 GHz for AT25-SMA, AT25-N and AT50-3.5; most N models — up to 18 GHz.
What is the attenuation accuracy?
Per the model tables — from ±0.3 dB in the lower bands to ±1.2 dB in the upper bands; VSWR from 1.10 to 1.9.