General description
UBDC Ultra-Broadband Differential silicon Capacitor pair targets Optical communication system such as ROSA/TOSA, SONET and all optoelectronics as well as High speed data system or products.
The UBDC is suitable for DC blocking and AC coupling applications in all broadband optoelectronics and High-speed data system.
The unique technology of integrated passive device in silicon, developed by Murata Integrated Passive Solutions, offers unique performances with low insertion loss, low reflection and phase stability from 287 kHz to 60 GHz+.

KEY FEATUREs
• Ultra-Broadband performance to 67 GHz
• Resonance free & phase stability
• 100Ω differential characteristic impedance
• Differential insertion loss < 0.9dB up to 60GHz
• Differential return loss > 12dB(*)
• Ultra-high stability of capacitance value:
   o Temperature 70ppm/K (-55 °C to +150 °C)
   o Voltage < -0.1%/Volts
   o Negligible capacitance loss through ageing
• Low profile: 140µm including bump height
• Break down voltage: 30V
• Low leakage current < 100pA
• High reliability
• High operating temperature (up to 150 °C)
• Compatible with high temperature cycling
   during manufacturing operations
   (exceeding 300 °C)
• SAC305 40µm bumps after reflow

Key applications
• ROSA/TOSA
• SONET
• High speed digital logic
• Microwave/millimetre system
• Volume limited applications
• Broadband test equipment