RoHs Compliant GaAs Flip-Chip Multiplier Varactor Diode MA46H146 V3 Features • • • • • Very Low Total Capacitance < 0.06 pF Extremely High Q > 15 K Silicon Nitride Passivation Polymer Scratch Protection Surface Mount Configuration Description M/A-COM’s MA46H146 is a gallium arsenide flip chip multiplier varactor These devices are facilitated on MOVPE epitaxial wafers using a process designed for high device uniformity and extremely low parasitics. The MA46H146 diodes are fully passivated with silicon nitride and have an additional polymide layer for scratch protection. The protective coatings prevent damage to the junction during automated or manual handling. The flip chip configuration is suitable for pick and place insertion. Absolute Maximum Ratings @ TA=+25 °C Parameter Absolute Maximum Operating Temperature -65 °C to +150 °C Storage Temperature -65 °C to +150 °C Reverse Voltage -26 V Forward Current 50 mA Mounting Temperature <200 °C 1. Operation of this device above any one of these parameters may cause permanent damage Chip Layout Front View (Circuit Side) Schematic Back View (Operator Side) Typical Performance Curves Typical Capacitance vs. Reverse Bias Voltage Typical Resistance vs. Reverse Bias Voltage Specifications Subject to Change Without Notice. 1 M/A-COM Inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. M/A-COM makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does M/A-COM assume any liability whatsoever arising out of the use or application of any product(s) or information. • North America Tel: 800.366.2266 / Fax: 978.366.2266 • Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300 • Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298 Visit www.macom.com for additional data sheets and product information. RoHs Compliant GaAs Flip-Chip Multiplier Varactor Diode MA46H146 V3 Electrical Specifications @ TA = +25 °C Gamma 0.50 Abrupt Multiplier Varactors Breakdown Voltage @ 10 μA = 26V minimum Reverse Current @ 18 V = 50 nA maximum Gamma = 0.45-0.55, VR = 0 to 20 V Part Number MA46H146 Total Capacitance Total Capacitance Total Capacitance Total Capacitance Total Capacitance Ratio Q Minimum Vr=0V F=1MHz Vr=4V F=1MHz Vr=10V F=1MHz Vr=25V F=1MHz Vr=0V Vr=25V Vr=4V f=50MHz (pF) (pF) (pF) (pF) - - Typical Typical Typical Typical Typical Typical 0.063 0.040 0.032 0.030 2.1 15600 Applications Handling Procedures These GaAs Flip Chip devices are suited for millimeter wave frequency tunable filters, where extremely low parastics are required to maintain reasonable Q. In addition, this product can be used in multiplier circuits, for 2X and 3X output frequencies in the millimeter wave frequency bands. The following precautions should damaging GaAs Flip-Chips: Assembly Requirements using Electrically Conductive Ag Epoxy These chips are designed to be inserted onto hard or soft substrates with the junction side down. They must be mounted with Electrically Conductive Ag epoxy. Solders are not recommended due to Tungsten metallization beneath the gold contacts. The die can also be assembled with the junction side up, and wire or ribbon bonds made from the bond pads to the circuit trace. Circuit can be preheated to 125 – 150 °C. Use a controlled amount of conductive epoxy for each bond pad. Finished, uniform silver epoxy thickness should be between 1 – 2 mils. Cure epoxy per manufacturer’s schedule. For extended cure times, temperatures must be below 200 °C. Cleanliness These chips should be handled in a clean environment. Do not attempt to clean die after installation. Static Voltage Sensitivity Varactor diodes are ESD sensitive and can be damaged by static electricity. Proper ESD techniques and precautions should be followed when handling these devices. General Handling The protective polymer coating on the active areas of these devices provides scratch protection, particularly for the metal Airbridge which contacts the anode. Dice can be handled with tweezers or vacuum pickups and are suitable for use with automatic pick-and-place equipment. Specifications Subject to Change Without Notice. 2 M/A-COM Inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. M/A-COM makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does M/A-COM assume any liability whatsoever arising out of the use or application of any product(s) or information. • North America Tel: 800.366.2266 / Fax: 978.366.2266 • Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300 • Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298 Visit www.macom.com for additional data sheets and product information. RoHs Compliant GaAs Flip-Chip Multiplier Varactor Diode MA46H146 V3 Dimensions DIMENSION INCHES MILLIMETERS MIN MAX MIN MAX A 0.025 0.027 0.64 0.69 B 0.012 0.015 0.30 0.38 C 0.006 0.008 0.15 0.20 D 0.007 0.009 0.18 0.23 E 0.006 0.008 0.15 0.20 F 0.015 0.017 0.38 0.43 Circuit Mounting Dimensions (inches) 3 Specifications Subject to Change Without Notice. M/A-COM Inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. M/A-COM makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does M/A-COM assume any liability whatsoever arising out of the use or application of any product(s) or information. • North America Tel: 800.366.2266 / Fax: 978.366.2266 • Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300 • Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298 Visit www.macom.com for additional data sheets and product information.