DC–18 GHz SMA 30 dB Cryogenic Fixed Attenuator VST-QU-SMA300202-18G
P/N: VST-QU-SMA300202-18G
– 30 dB attenuation for cryogenic RF paths
– SMA interface for low-temperature systems
– 2 W power rating with 50 Ω impedance
– Built for dilution refrigerator signal chains
– Inline gold-plated attenuator structure
Engineering Note
The VST-QU-SMA300202-18G is a DC–18 GHz sma cryogenic fixed attenuator for cryogenic RF systems, quantum computing signal chains, and dilution refrigerator microwave paths. It provides 30 dB nominal attenuation in an inline sma cryogenic fixed attenuator with 50 Ω impedance, 2 W power rating, and ≤1.35:1 VSWR for controlled signal-level management at low temperature.
Technical Specifications
| Model | VST-QU-SMA300202-18G |
|---|---|
| Product Type | SMA Cryogenic Fixed Attenuator |
| Frequency Range | DC–18 GHz |
| Impedance | 50 Ω |
| Power Rating | 2 W |
| VSWR | ≤1.35:1 |
| Nominal Attenuation | 30 dB |
| Attenuation Tolerance | ±0.8 dB |
| Connector Interface | SMA-JK |
| Structure | Inline SMA cryogenic fixed attenuator |
| Body Material | Brass, gold-plated |
| Connector Outer Contact | Brass, gold-plated |
| Male Inner Contact | Beryllium copper, gold-plated |
| Female Inner Contact | Beryllium copper, gold-plated |
| Length | 25 ± 1 mm |
| Across Flats | 5/16 HEX |
| Body Format | 15/20/30 dB body format |
| Compliance | RoHS |
| Configuration | Non-magnetic option available on request |
Target Applications
Cryogenic RF Signal Conditioning
Fixed attenuation for low-temperature RF paths in cryogenic measurement systems.
Quantum Computing Signal Chains
Input and readout path attenuation for dilution refrigerator RF wiring.
Low-Temperature Microwave Testing
Controlled RF level reduction for microwave test setups and calibrated signal paths.
Compact RF Attenuation Networks
Inline attenuation where compact connectorized components are required.
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