High Frequency Surface Mount Attenuators IRC Advanced Film Division PAT-W • RoHS Compliant • 10GHz operation • ±50ppm/°C absolute TCR • Wrap Around 100% Sn Terminations • 50Ω impedance available in 2 chip sizes available The PAT-W series high performance chip attenuator provides excellent high frequency performance at power ratings up to 500mW. The wrap-around construction provides reliable low cost, surface mount assembly. Long term operational stability is achieved from the thin film construction. Typical uses include applications in medical, industrial, and communications. Electrical Data Power Rating @ 70°C Attenuation Tolerance Data PAT3042 PAT4556 250mW 500mW Impedance VSWR Operating Temperature Range Attenuation Tolerance Code DC to 2GHz 2GHz to 5GHz 5GHz to 10GHz A +0.1/ -0dB +0.2/ -0dB +0.4/ -0dB A ±0.1dB ±0.2dB ±0.4dB B ±0.2dB ±0.3dB ±0.5dB B ±0.2dB ±0.3dB ±0.5dB 50Ω TCR Attenuation (dB) Attenuation Value 0dB ±50ppm/°C 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 16, 20 DC to 2GHz = 1.1 2GHz to 5GHz = 1.2 5GHz to 10GHz = 1.3 0 to 10dB 16, 20dB -55°C to +125°C Terminations 100% Sn Environmental Data Test Condition Short Time Over Load Load Life Moisture Resistance Temperature Cycle Resistance to Solder Heat Impedance 16, 20dB 2.5 x Rated Voltage, 5 sec ±0.01dB ±0.02dB ±0.2% 1000 Hours, 70°C ±0.02dB ±0.04dB ±0.5% 1000 hours, 60°C, 95% RH ±0.02dB ±0.04dB ±0.5% 5 Cycles, 125°C High, -55°C Low ±0.01dB ±0.02dB ±0.2% 260°C, 10 sec. ±0.01dB ±0.02dB ±0.2% Solderability Insulation Resistance Attenuation 0 to 10dB 235°C, 3 sec >95% coverage 500V, 1 minute >1000MΩ General Note IRC reserves the right to make changes in product specification without notice or liability. All information is subject to IRC’s own data and is considered accurate at time of going to print. © IRC Advanced Film Division • 4222 South Staples Street • Corpus Christi Texas 78411 USA Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com A subsidiary of TT electronics plc PAT-W Series Issue June 2008 Sheet 1 of 2 High Frequency Surface Mount Attenuators IRC Advanced Film Division Physical Data PAT3042 Dimensions (mm) t L 3 W2 2 1 Bottom View 3 W2 1 2 3 4 4.20 ± 0.20 W 3.02 ± 0.20 t 0.80 ± 0.15 3 3 1 2 3 3 Dimensions (mm) t 01 PAT4556 L 0.9 ± 0.10 L 5 W 6 3 W2 W 5 6 Bottom View 3 3 1 2 3 3 W2 1.39 ± 0.1 L 5.6 ± 0.2 W 4.5 ± 0.2 t 0.80 ± 0.15 1, 2: Input and output terminals 3: Ground Terminal 4: Overcoat 5: Alumina substrate 6: Thin film resistor Ordering Data Power Derating Curve Prefix % Of Rated Power 100 HFR - PAT3042WLF - 50R0 - 3 A Model PAT3042WLF = Surface Mount Attenuator with 100% Sn Terminations PAT4556WLF = Surface Mount Attenuator with 100% Sn Terminations 60 Impedance 50R0 = 50Ω Attenuation 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 16, 20dB 0 Attenuation Tolerance 25 70 125 A, B Ambient Temperature (°C) © IRC Advanced Film Division • 4222 South Staples Street • Corpus Christi Texas 78411 USA Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com PAT-W Series Issue June 2008 Sheet 2 of 2