GaAs Flip Chip Schottky Diodes Mi Alpha DMK2790-000, DMK2308-000, DMK8001-000 Features @ Designed for High Volume Designs @ High Frequency (20-100 GHz) @ Exceeds Environmental Requirements for MIC & Hybrid Applications lf Designed for Low Junction Capacitance and Low Series Resistance @ Applications Include PCN Mixers and Circuits, As Well As Low Power, Fast Switching @ Low Parasitic Flip Chip Configuration Description This new series of GaAs Schottky barrier diodes offer high performance at commercial market prices. They are designed for low junction capacitance, as well as low series resistance. Diodes are designed for MIC work (hard and soft substrates), but the leadless design eliminates the problems associated with mounting of beam lead diodes. Due to its rigid construction, it exceeds environmental requirements for MIC and hybrid applications. Diodes can be supplied on expandable film frame for high speed pick and place process. Standard packing will be in a gel pack. Flexible conductive epoxy is the most effective method for circuitry attachments. Standard mounting temperatures should not exceed 175C. Electrical Specifications at 25C Single - DMK2790-000 | Px] DI Anti-Parallel - TQ a |OCO a Gh K DMK2308-000 Series Pair - DMK8001-000 cy? OV, 1 MHz (pF) Recommended Frequency (GHz) Vp! @ 10 yA Rs (mA) (Vv) (Q) Ve @1mA (mV) Single Series Pair Anti-Parallel Min. Max. Max. Min. Max. 540-011 540-012 540-025 20-100 3.0 0.04 0.07 7 650 750 DMK2790-000 DMK2308-000 20-100 3.0 0.05 0.08 7 650 750 DMK8001 -000 1. Vg cannot be measured nondestructively in anti-parallel configuration. 2. Cy = junction capacitance plus 0.02 pF (overlay). Alpha Industries, Inc. [781] 935-5150 Fax [617] 824-4579 Email sales@alphaind.com www.alphaind.com Specifications subject to change without notice. 8/99A GaAs Flip Chip Schottky Diodes DMK2790-000, DMK2308-000, DMK8001-000 Typical Parameter Distribution on Wafer 0.080 i 0.076 Ve = Mixer & 0.072 DMK2790 @ 0.068 2 X= 719 mV G 0.064 oO o=6.3 mV = 0.060 5 Boas 5 0.048 E & 0.044 = a 0.040 0.036 0.032 0.028 0 0510 15 2025 30 354045 50 680 700 720 740 Bias Voltage (V) Ve 1 mA (mV) Capacitance/Voltage Variation Histogram 0.063 SD = 0.002 165 x= 5.00=0.25 154 Rr = Mixer 143 DMK2790 wo C, 0.0063 pF w 182 %=5.09 5 Average 5 140 G=0.250 5 0.0014 pF SD 5S 99 g 85 E E 66 Zz Zz 55 44 33 22 11 0 0.055 0.060 0.065 0.070 4.0 4.5 5.0 5.5 6.0 Capacitance 0 V (pF) Rr 10 mA (Q) Histogram Histogram Spice Parameters (Per Junction) Is Rs Tp c,0 Eg Vy By IBv Amp Q n $s pF m ev ev Xt FC Vv A 0.5 E-12 1.05 1E-11 0.05 0.26 1.43 0.82 2 0.5 4.0 1E-05 2 Alpha Industries, Inc. [781] 935-5150 Fax [617] 824-4579 Email sales@alphaind.com www.alphaind.com Specifications subject to change without notice. 8/99A GaAs Flip Chip Schottky Diodes DMK2790-000, DMK2308-000, DMK8001-000 Suggested Setup Values For WEST-BOND Model 7200A Epoxy Die Bonder Materials Epoxy Microelectronic grade one component, solvent-free silver-filled, electrically conductive adhesive example: Ablebond 8380 by Ablestick. Dispense Tube WEST-BOND B-1831-1 with 9.5 mil I.D., or WEST-BOND B-1831-2 with 15.5 mil |.D. Other sizes available. Die Pickup Tool SPT Part Number 2101-W625-CT-031 x 0.016 x 0.0075. Hole diameter 0.016" face diameter 0.031", O.D. 0.625". Use vacuum pressure to pick and place chip. Adjustment Bond Force 35 grams at tool. Dispense Air 30 psi. Dispense Time To give diameter of dot required. Curing Time Flexible Conductive Epoxy Mounting of Alpha Beamless Flip Chip Diodes To Soft or Hard Substrate As Plated Conductive Epoxy Drops (Minimum Amount) Approximately 8 mil Diameter 1-2 mil height Temperature Time 250C 10 min. 130C 20 min. 100C 60 min. 85C 120 min. Perform Die Attach * Flip Device * Align Bond Pads to Epoxy Dot (Alignment Marks Help) Use Even Pressure to Make Correct Connection Acceptable oN Epoxy Runout Excessive Vy Epoxy Runout Cure Epoxy & DC Continuity Check * Inspect for Adequate Epoxy Fillet Cure According to Mfg. Preferred Schedule. Typically 110-150C @ 60 Minutes, or 150C, 4 Minutes for Snap-Cure Epoxies Alpha Industries, Inc. [781] 935-5150 Fax [617] 824-4579 Email sales@alphaind.com www.alphaind.com 3 Specifications subject to change without notice. 8/99A