M ICROWAVE C HIP R ESISTORS Thin Film on Ceramic FEATURES * Low VSWR: < 1.2 at 8 GHz * Low TCR: 0 to -50 ppm * Four Sizes: 0.020 X 0.040 to 0.100 X 0.100 inches * Wire Bond / Solder Mount Option Spectrum Microwave Chip Resistors are produced with state-of-the-art thin film sputtering techniques on microwave grade alumina. The advantages of sputtered over evaporated metal films include better adhesion to the substrate, increased reliability, and more uniform composition, density, and thickness. Their T CR , noise level, and stability are similar to discrete metal film resistors. The small size and careful design of Spectrum Microwave Chip Resistors result in low VSWR and low parasitics. They are available with gold pads for wire bonding or solder bumps for surface mounting. MCB/MCG (BARE BACK /G OLD BACK ) .003 TYP. The MCB and MCG resistors have gold terminations for wirebonds, although epoxy may also be used. MCB resistors have no backside metallization. They are die-mounted with epoxy. MCG resistors have a gold backside metallization. The metallization is electronically isolated from the front terminations. T = .010 .001 .010 MIN. .003 TYP. L .005 W .005 MCS (SOLDER BUMP) T = .020 MAX. MCS resistors have solder bump terminations for flip-chip surface mounting. They have no backside metallizing. They can also be die-mounted with epoxy with solder bumps exposed for connection. .010 MIN. 0.003 TYP. .003 TYP. ORDERING INSTRUCTIONS L .005 Construct Part Number From Choices: W .005 ___________ - __________ _ - ___________- ___________ (size) (type) (ohms)* (tolerance) 2 MCB D = 0.5% 3 MCG F = 1% 4 MCS J = 5% 5 K = 10% Example: 2-MCS-1001-J (Example is a 0.020-by-0.040-inch chip with solder-bump terminations, 1000 ohms 5% resistance.) *First 3 digits are significant figures. Fourth is number of zeros to follow or D for decimal between second and third digits. Spectrum Microwave Tel: 508-485-6350 Fax: 508-485-5168 165 Cedar Hill Street, Marlborough, Ma 01752 www.SpectrumMicrowave.com MICROWAVE CHIP RESISTORS Thin Film on Ceramic SPECIFICATIONS Substrate: Material . . . . . . . . . . . . . . . . . . . . . . . .99.6% Al2O3 Thickness . . . . . . . . . . . . . . . . . . .0.010 0.001 in. Conductor Film Thickness: MCB Nichrome . . . . . . . . . . . . .As required for resistivity Titungsten . . . . . . . . . . . . . . . . . . . . . . .700A min. Gold . . . . . . . . . . . . . . . . . . . . . . . . . .100 in. min. MCG Front . . . . . . . . . . . . . . . . . . . . . . . . .same as MCB Back Titungsten . . . . . . . . . . . . . . . . . . .250 100A Gold . . . . . . . . . . . . . . . . . . . . . .100 in. min. MCS Nichrome . . . . . . . . . . . . .As required for resistivity Titungsten . . . . . . . . . . . . . . . . . . . .700A min. Gold . . . . . . . . . . . . . . . . . . . . . . . .7 in. min. Nickel . . . . . . . . . . . . . . . . . . . . . .10 in. min. Gold . . . . . . . . . . . . . . . . . . . . . . .30 in. min. Solder (60/40) . . . . . . . . . . . . . .1 to 3 mils typ T YPICAL ELECTRICAL DATA TCR . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0 to -50 ppm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-55 to +150C Noise: . . . . . . . . . . . . . . . . . . . . . . . . . . . .< 0.1 mV/V VSWR . . . . . . . . . . . . . . . . . . . . . . . . .< 1.2 to 8 GHz VSWR . . . . . . . . . . . . . . . . . . . . . .< 1.48 to 18 GHZ Dielectric k . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9.9 Dissipation Factor . . . . . . . . . . . . . . . . . . . . . . .0.001 Loss Factor . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.0001 Specifications subject to change without notice. SIZES / P OWER / R ESISTANCE R ANGE Dimensions (Inches) Power* (mW) Range (ohms) Size 2: 0.020 X 0.040 75 10 to 3000 Size 3: 0.050 X 0.050 100 10 to 1500 Size 4: 0.50 X 0.100 150 10 to 1500 Size 5: 0.100 X 0.100 250 10 to 1500 *Maximum continuous rating at 70C when bonded to substrate. Derate to zero at 150C. Spectrum Microwave also manufactures Custom Substrates on a variety of materials, a wide range of Microwave, PIN Diode Drivers, and Custom Hybrid Circuits. Please contact the factory or your local representative for more information.