Fixed Attenuator Pads

SemiGen RF/microwave fixed attenuator pads feature precise resistor films and superior metallization resulting in superior performance and consistency. Our advanced thin-film technology allows our parts to have full side wraps for SMT installation and a complete grounding backside for ease in attachment, as no ground bonding is required. Wire bondable top side contacts for RF in/out make these ideal for standard RF/microwave assembly techniques.

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Fixed Attenuator Pads

Part Number Attenuation (dB) Attenuation Flatness1 Return Loss Outline
DC Tolerance (dB) DC-20GHz (dB) 20-30GHz (dB) 30-40GHz (dB) DC-14GHz Min (db) 14-40GHz Typ.(dB)
SFAP-0dB 0 +0.20 +0.20 +0.40 +0.40 18.0 16.0 Semigen SFAP-0db attenuator outline
SFAP-1db 1 ±0.20 ±0.20 ±0.40 ±0.40 18.0 16.0 Semigen SFAP-1db attenuator outline
SFAP-2db 2 ±0.20 ±0.20 ±0.40 ±0.40 18.0 16.0 Semigen SFAP-2db attenuator outline
SFAP-3db 3 ±0.20 ±0.20 ±0.40 ±0.40 18.0 16.0 Semigen SFAP-3db attenuator outline
SFAP-4db 4 ±0.20 ±0.20 ±0.40 ±0.40 18.0 16.0 Semigen SFAP-4db attenuator outline
SFAP-5db 5 ±0.20 ±0.20 ±0.40 ±0.40 18.0 16.0 Semigen SFAP-5db attenuator outline
SFAP-6db 6 ±0.20 ±0.25 ±0.40 ±0.40 18.0 16.0 Semigen SFAP-6db attenuator outline
SFAP-7db 7 ±0.20 ±0.25 ±0.40 ±0.40 18.0 16.0 Semigen SFAP-7db attenuator outline
SFAP-8db 8 ±0.20 ±0.25 ±0.40 ±0.40 18.0 16.0 Semigen SFAP-8db attenuator outline
SFAP-9db 9 ±0.20 ±0.25 ±0.40 ±0.40 18.0 16.0 Semigen SFAP-9db attenuator outline
SFAP-10db 10 ±0.20 ±0.25 ±0.40 ±0.40 18.0 16.0 Semigen SFAP-10db attenuator outline
SFAP-11db 11 ±0.20 ±0.30 ±0.40 ±0.40 18.0 16.0  
SFAP-12db 12 ±0.20 ±0.30 ±0.40 ±0.40 18.0 16.0 Semigen SFAP-12db attenuator outline
SFAP-13db 13 ±0.20 ±0.30 ±0.40 ±0.40 18.0 16.0 Semigen SFAP-13db attenuator outline
SFAP-14db 14 ±0.20 ±0.30 ±0.40 ±0.40 18.0 16.0 Semigen SFAP-14db attenuator outline
SFAP-15db 15 ±0.20 ±0.30 ±0.40 ±0.40 18.0 16.0 Semigen SFAP-15db attenuator outline
SFAP-16db 16 ±0.20 ±0.30 ±0.40 ±0.40 18.0 16.0 Semigen SFAP-16db attenuator outline
SFAP-17db 17 ±0.20 ±0.40 ±0.60 ±0.60 18.0 16.0 Semigen SFAP-17db attenuator outline
SFAP-18db 18 ±0.20 ±0.40 ±0.60 ±0.60 18.0 16.0 Semigen SFAP-18db attenuator outline
SFAP-19db 19 ±0.20 ±0.40 ±0.60 ±0.60 18.0 16.0 Semigen SFAP-19db attenuator outline
SFAP-20db 20 ±0.20 ±0.40 ±0.60 ±0.60 18.0 16.0 Semigen SFAP-20db attenuator outline
SFAP-21db 21 ±0.20 ±0.40 ±0.60 ±0.60 18.0 16.0  
SFAP-22db 22 ±0.20 ±0.40 ±0.60 ±0.60 18.0 16.0 Semigen SFAP-22db attenuator outline
SFAP-23db 23 ±0.20 ±0.40 ±0.60 ±0.60 18.0 16.0  
SFAP-24db 24 ±0.20 ±0.40 ±0.60 ±0.60 18.0 16.0  
SFAP-25db 25 ±0.20 ±0.40 ±0.60 ±0.60 18.0 16.0 Semigen SFAP-25db attenuator outline
SFAP-26db 26 ±0.20 ±0.40 ±0.60 ±0.60 18.0 16.0  
SFAP-27db 27 ±0.20 ±0.40 ±0.60 ±0.60 18.0 16.0  
SFAP-28db 28 ±0.20 ±0.40 ±0.60 ±0.60 18.0 16.0 Semigen SFAP-28db attenuator outline
SFAP-29db 29 ±0.20 ±0.40 ±0.60 ±0.60 18.0 16.0 Semigen SFAP-29db attenuator outline
SFAP-30db 30 ±0.20 ±0.40 ±0.60 ±0.60 18.0 16.0 Semigen SFAP-30db attenuator outline
 
1 Specified flatness is the mean attenuator for the given frequency range.

Features:

  • Suitable for epoxy die attach
  • Oxide-nitride passivated
  • Power Handling 2W CW
  • Flat Response from DC to 40 GHz
  • Return Loss >18dB
  • Temp Stable TCR <100 PPM
  • Available up screened MIL-PRF-38534 Class H&K

Applications:
These attenuator pads are the perfect solution for a wide range of applications including microwave radio, military subsystems, fiber optics, scientific instruments and sensor applications through 40 GHz.

 

Downloads:

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