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High-Frequency, High-Q Capacitors

Murata offers their GJM-series, GQM-series, and ERB-series of high-frequency, high-Q capacitors

The high-frequency communications infrastructure market is continuously expanding. The downsizing trends for circuit-module designs have increased the requirements for lower profiles and power consumption. Murata has the solution to meet these demands by offering three series of RoHS-compliant capacitors with C0G characteristics: the GJM, GQM, and ERB series.

Image of Murata's GJM-Series of High-Frequency, High-Q Capacitors GJM-Series: The Murata GJM-series is a high-Q, ultra-small capacitor series for high-frequency applications in the 500 MHz to 10 GHz range, suitable for VCO and PA module applications. The GJM-series is made with copper electrodes as a cost-effective solution for low ESR and power consumption due to the high-Q (low loss) performance. A variety of tight-tolerance versions are available, offered in EIA sizes of 0201 and 0402 with a capacitance range of 0.2 pF to 20 pF.

Features
  • Size: 0201 and 0402
  • Voltage: 6.3 VDC, 25 VDC, and 50 VDC
  • Capacitance range: 0.2 pF to 20 pF
  • Internal electrode: Cu
  • Termination: Cu + Ni/Sn plating
  • ESR: very low
  • Power: low power (up to 5 W)
  • Frequency range: 500 MHz - 10 GHz
  • Temperature characteristics: C0G (-55°C to +125°C with 0 ±30 ppm/°C)
  • Temperature characteristics: C0H (-55°C to +125°C with 0 ±60 ppm/°C)
Applications
  • PA modules
  • WLAN
  • Wireless modems
  • Remote keyless entry
  • Wireless PDAs
  • GPS
  • Antenna tuning
  • Bluetooth modules

Image of Murata's GQM-Series of High-Frequency, High-Q Capacitors GQM-Series: A copper-based internal electrode makes the GQM-series highly resistant to frequency, which can be used from 500 MHz to 10 GHz. The copper electrodes allow for ultra-low ESR, high-Q in the GHz frequencies, and high RF current-handling capability. This series is the best choice for high-performance, high-power RF designs requiring voltages up to 250 VDC. A variety of tight-tolerance versions are available, offered in EIA sizes of 0603 and 0805 with a capacitance range of 0.1 pF to 100 pF.

Features
  • Size: 0603 and 0805
  • Voltage: 50 VDC, 100 VDC, and 250 VDC
  • Capacitance range: 0.1 pF to 100 pF
  • Internal electrode: Cu
  • Termination: Cu + Ni/Sn plating
  • ESR: ultra low
  • Power: high power (> 15 W)
  • Frequency range: 500 MHz - 10 GHz
  • Temperature characteristics: C0G (-55°C to +125°C with 0 ±30 ppm/°C)
Applications
  • Base stations for cellular
  • Broadcast satellites
  • Cable TV and telecommunications networks
  • GPS
  • Bluetooth
  • TV set-top boxes

Image of Murata's ERB-Series of High-Frequency, High-Q Capacitors ERB-Series: Exhibiting a capacitance range of 0.5 pF to 1,000 pF, the ERB-series of capacitors comes with higher Q and lower ESR which is better than the standard products of equivalent packages. For high-performance, medium-power RF designs, this series offers low ESR in the 1 MHz to 1 GHz frequency range. The temperature stability of the C0G dielectrics ensures low power dissipation. The ERB-series is designed with precious metal inner electrodes. These surface-mount capacitors are available in voltages up to 500 VDC in a 1210 EIA size

Features
  • Size: 0603, 0805, and 1210
  • Voltage: 50 VDC, 100 VDC, 250 VDC, 300 VDC, and 500 VDC
  • Capacitance range: 0.5 pF to 1000 pF
  • Internal electrode: Pd
  • Termination: Ag + Ni/Sn plating
  • ESR: low
  • Power: medium power (5 W - 15 W)
  • Frequency range: 1 MHz - 1 GHz
  • Temperature characteristics: C0G (-55°C to +125°C with 0 ±30 ppm/°C)
Applications
  • General-purpose, high-frequency circuits
  • Wireless equipment
  • High-frequency radios
  • Broadcast satellites
  • RF and base-station power amplifiers

Image of Murata's High-Frequency, High-Q Capacitors Line-Up

GQM-Series Capacitors

ImageManufacturer Part NumberDescriptionToleranceVoltage - RatedCapacitanceAvailable QuantityView Details
CAP CER 1PF 250V C0G/NP0 0603GQM1875C2E1R0WB12DCAP CER 1PF 250V C0G/NP0 0603±0.05pF250V1pF656 - ImmediateView Details
CAP CER 22PF 250V C0G/NP0 0603GQM1875C2E220GB12DCAP CER 22PF 250V C0G/NP0 0603±2%250V22pF4935 - ImmediateView Details
CAP CER 2.4PF 250V C0G/NP0 0603GQM1875C2E2R4BB12DCAP CER 2.4PF 250V C0G/NP0 0603±0.1pF250V2.4pF4870 - ImmediateView Details
CAP CER 2.7PF 250V C0G/NP0 0603GQM1875C2E2R7BB12DCAP CER 2.7PF 250V C0G/NP0 0603±0.1pF250V2.7pF1572 - ImmediateView Details
CAP CER 3.9PF 250V C0G/NP0 0603GQM1875C2E3R9BB12DCAP CER 3.9PF 250V C0G/NP0 0603±0.1pF250V3.9pF2428 - ImmediateView Details

GJM-Series Capacitors

ImageManufacturer Part NumberDescriptionToleranceVoltage - RatedCapacitanceAvailable QuantityView Details
CAP CER 15PF 25V C0G/NP0 0201GJM0335C1E150GB01DCAP CER 15PF 25V C0G/NP0 0201±2%25V15pF130329 - ImmediateView Details
CAP CER 1PF 25V C0G/NP0 0201GJM0335C1E1R0WB01DCAP CER 1PF 25V C0G/NP0 0201±0.05pF25V1pF220991 - ImmediateView Details
CAP CER 27PF 6.3V C0G/NP0 0201GJM0335C0J270GB01DCAP CER 27PF 6.3V C0G/NP0 0201±2%6.3V27pF1076 - ImmediateView Details
CAP CER 1PF 25V C0G/NP0 0201GJM0335C1E1R0BB01DCAP CER 1PF 25V C0G/NP0 0201±0.1pF25V1pF136226 - ImmediateView Details
CAP CER 1.2PF 25V C0G/NP0 0201GJM0335C1E1R2BB01DCAP CER 1.2PF 25V C0G/NP0 0201±0.1pF25V1.2pF325212 - ImmediateView Details
Published: 2011-12-15