Thin Film Surface Mount Chip Attenuators The ims A-Series thin film surfac f e mount chip attenuator line is ideal for applications requiring precision attenuation in a small form factor packages. The attenuators are provided in the "" configuration. Thin film technology insures a low noise, precise attenuator at a very aff ffordable price. The wraparound terminations include a nicke k l barrier layer which aff ffords excellent solderabi r lity t and mechanical integrity ty. This chip attenuator line has the fo f llowing featu f res: * Precision thin film attenuator element * 99.5% Al2O3 substrate material * Nicke k l barrier layer for excellent solderability t and mechanical integrity * Ultra low noise attenuato t r element * Excellent high frequency performance f * Low inductance and parasitic capacitance * Stable characteristics over temperature and time 100% Matte Tin Finish * Polyimide passivation of attenuator element * Av A ailable in bulk or on tape and reel Terminations Full wraparound Features A-0603,0805,1206,1612 Thin film technology A Attenuation Ranges Full Wraparound Nickel Barrier for excellent solderability The A-Series is available in values from 0dB to 10 dB in 1 dB increments. Standard impedance is Frequency Characteristics (A-0805)* Frequency Characteristics Attenuation from 0 dB to 10 dB in 1 dB increments, 16 dB (A-1206, A-1612), 20 dB (A-1612) 11.0 10 dB 10.0 9.0 8 dB VSWR 1.5:1 max. (A-0402),1.3:1 all others Attenuation (dB) 8.0 7.0 6 dB 6.0 5.0 4 dB 4.0 3 dB 3.0 2 dB 2.0 VSWR 1.6 50 Schoolhouse Lane Portsmouth, RI 02871 Tel (401) 683-9700 Fax (401) 683-5571 e-mail: ims@ims-resistors.com http://www.ims-resistors.com 1.4 1.2 1.0 0 2 4 6 8 10 12 14 Frequency (GHz) *Performs within spec to 20 GHz when mounted fac f e down. Dimensions W Part Number A-0402WA A-0603 & IMS2533 A-0805 & IMS1141 A-1206 A-1612 Length 0.039 0.063 0.079 0.126 0.165 Width .004 .004 .008 .008 .008 0.020 0.032 0.049 0.063 0.118 Height .004 .004 .008 .008 .008 0.014 0.020 0.020 0.020 0.020 max. max. max. max. max. Terminal 0.009 0.016 0.020 0.039 0.037 .002 .006 .008 .010 .008 L H T A-0603, A-0805, A-1206 Characteristics Operating Temperature -55oC to +125oC Impedance 50 Frequency range DC to beyond 10 GHz (A-0402WA, A-0603, A-0805) DC to 3 GHz (A-1206) DC to 2 GHZ (A-1612) VSWR 1.3:1 maximum (except A-0402WA - 1.5:1) Attenuation 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 16*, 20** dB Attenuation tolerance A-0805, 1141, A-1206, A-1612 0.3 dB, 0.5 dB (1206 - 16 dB, 1612 - 16 dB,20dB) A-0402WA, A-0603, 2533 0.3 dB (0 - 3dB) 0.5 dB (4 - 7 dB) 1.0 dB (8 - 10 dB) A-0402WA L * A-1206, A-1612 only H **A-1612 only Specifications W Maximum Working Voltage A-0402WA A-0603 & IMS2533 A-0805 & IMS1141 A-1206 A-1612 1.26WVDC 1.77WVDC 2.24WVDC 2.50WVDC 3.53WVDC Rated Power (70C) A-0402WA A-0603 & IMS2533 A-0805 & IMS1141 A-1206 A-1612 32mW 63mW 100mW 125mW 250mW Ordering Information Face Up Example: 3 dB, 100 mW, SMT 0805 attenuator. A Prefix for Face Up Attenuator -0805 -C -03DB T A-1612 For higher dB values, higher power ratings or lead content attenuators see our IAX Series Attenuation level 00 - 10 dB, 16*, 20**dB Form factor 0402WA, 0603, 0805, 1206, 1612 *A-1206 & 1612 only ** A-1612 only &LQGLFDWHVLPSHGDQFH Face Down Example: 3 dB, 100 mW, SMT 0805 attenuator. IMS1141 IMS2533 = Face Down 0603 IMS1141 = Face Down 0805 A-Series ver.7 08/10 - 03DB Attenuation level 00 - 10 dB Specifications subject to change without notice. 50 Schoolhouse Lane Portsmouth, RI 02871 Tel (401) 683-9700 Fax (401) 683-5571 e-mail: ims@ims-resistors.com http://www.ims-resistors.com