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July 2025
8495A
Keysight/Agilent 8495A, DC to 4 GHz Frequency, Manual Attenuator
Actual item may vary if no part number is provided on quote request.
✔ 2 Year Warranty Included
✔ Free Domestic Ground Shipping
✔ NIST Calibration Available
Andrew Gar**** Verified Buyer
" Amazing to work with and had my order within 1 week after purchasing with all NI certs and data that were needed. "
March 2025
Said Sai**** Verified Buyer
" Competent contact for highly specialized components. The support team is very knowledgeable. Many thanks for the help and the fast shipping! "
January 2025
Bob C**** Verified Buyer
" Jason was able to get our emergency situation taken care of quickly and professionally. "
May 2025
Gregg Flecki**** Verified Buyer
" Great service and great products. This is my 2nd time using Apex Waves, truly impressed. "
January 2025
Carol Zimme**** Verified Buyer
" Very responsive and helpful, competitive pricing. Good source! "
July 2025
Andrew Gar**** Verified Buyer
" Amazing to work with and had my order within 1 week after purchasing with all NI certs and data that were needed. "
March 2025
Said Sai**** Verified Buyer
" Competent contact for highly specialized components. The support team is very knowledgeable. Many thanks for the help and the fast shipping! "
January 2025
Bob C**** Verified Buyer
" Jason was able to get our emergency situation taken care of quickly and professionally. "
May 2025
Gregg Flecki**** Verified Buyer
" Great service and great products. This is my 2nd time using Apex Waves, truly impressed. "
January 2025
Keysight/Agilent 8495A Manual Attenuator
The Keysight 8495A is a hand-controlled, precision RF and microwave step attenuator for controlled signal reduction in dc-to-4-GHz systems. The attenuator provides selectable, 10-dB steps of 0 to 70 dB of reduction, making it well-suited for test systems, signal conditioning, and calibrations in which signal levels have to be varied. The attenuator is made of gold-plated leaf springs for durability over time, capable of more than 5 million cycles in a given portion, repeating to 0.01 dB in normal operation, which is needed for stability in automation or heavily serviced environments. The 0 dB insertion loss is rated as 0.4 dB + 0.07 dB for each GHz, so little signal reduction is made when reduction is not being taken. The maximum of 1.35 for maximum SWR provides impedance stability for all frequencies.
Engineered for power capability, the 8495A accepts a constant, 100 W of RF input power, and 1 W of average, pulsed signals in industrial and lab environments. The interfaces can be SMA female, Type-N female, or an APC-7 interface. For enhanced traceability in measurements, there is an optional UK6 upgrade that provides NIST-approved data for SWR and attenuation, which is critical in supporting stringent cal requirements.
The attenuator’s modular design facilitates intermixing with other Keysight 8494/5/6/7-series attenuators via interconnect kits 11716A/B/C, yielding 1 dB of additional dynamic range in pairs. The amenability is for network analysis, testing a receiver, and spectra monitoring, wherein multi-step fine adjustment of attenuation is required. The device is well-suited for automated test systems, manufacturing tests, and R&D environments, which have a call for repeat, guaranteed operation. The Keysight 8495A is being widely employed in defense, telecommunications, and aeronautics industries for system calibrations, testing for distortion, and signal path optimization. The wide band of frequencies, along with its excellent repetition and configurable connectors, makes it a highly flexible tool for RF signal management in high-performance environments, which is required by engineers.
| Model | 8495A |
|---|---|
| Part Type | Manual Step Attenuator |
| Frequency Range | DC to 4 GHz |
| Attenuation Range | 0 to 70 dB in 10-dB steps |
| Insertion Loss (0 dB) | 0.4 dB + 0.07 dB per GHz |
| Maximum SWR | 1.35 |
| Repeatability | 0.03 dB max (5 million cycles per section, typical 0.01 dB) |
| Power Handling | 1 W (average), 100 W (peak) |
| Connector Options | Type-N female, SMA female, or APC-7 |
| Life Span | Over 5 million cycles per section |
| Pricing | Request a Quote for Pricing Information |
| Manufacturer | Keysight/Agilent |
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