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GaAs Flip Chip Schottky Barrier Diodes
Features
* * * * * * Low Series Resistance Low Capacitance High Cutoff Frequency Silicon Nitride Passivation Polyimide Scratch Protection Designed for Easy Circuit Insertion
MA4E1317, MA4E1318, MA4E1319-1, MA4E1319-2 V1
MA4E1317
Description and Applications
M/A-COM's MA4E1317 single, MA4E1318 anti-parallel pair, MA4E1319-1 reverse tee and MA4E1319-2 series tee are gallium arsenide flip chip Schottky barrier diodes. These devices are fabricated on OMCVD epitaxial wafers using a process designed for high device uniformity and extremely low parasitics. The diodes are fully passivated with silicon nitride and have an additional layer of polyimide 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. The high cutoff frequency of these diodes allows use through millimeter wave frequencies. Typical applications include single and double balanced mixers in PCN transceivers and radios, police radar detectors, and automotive radar detectors. The devices can be used through 80 GHz. The MA4E1318 anti-parallel pair is designed for use in subharmonically pumped mixers. Close matching of the diode characteristics results in high LO suppression at the RF input.
MA4E1318
MA4E1319-1
MA4E1319-2
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.
GaAs Flip Chip Schottky Barrier Diodes
Electrical Specifications @ Ta = 25 C
Parameters and Test Conditions Symbol Units Min Junction Capacitance at 0V at 1 Mhz Total Capacitance at 0V at 1 Mhz1 Junction Capacitance Difference Series Resistance at +10mA2 Forward Voltage at +1mA Forward Voltage Difference at 1mA Reverse Breakdown Voltage at -10uA SSB Noise Figure Cj pF MA4E1317 Typ .020 .0303 Max Min
MA4E1317, MA4E1318, MA4E1319-1, MA4E1319-2 V1
MA4E1318 Typ .020
3
MA4E1319-1 or -2 Max Min Typ .020 .0603 .010 7 .80 .010 4.5 .60 .0303
3
Max
Ct Cj Rs Vf1 Vf Vbr NF
pF pF Ohms Volts Volts Volts dB
.030
.045
.060
.0453 .005
.0453 .005 4 .70 .005 7 6.54
.0603 .010 7 .80 .010
4 .60 .70
7 .80 .60
4 .70 .005
4.5
7 6.54 6.54
Notes:
1. 2. 3. 4. Total capacitance is equivalent to the sum of junction capacitance Cj and parasitic capacitance Cp. Series resistance is determined by measuring the dynamic resistance and subtracting the junction resistance of 2.6 ohms. Capacitance for the MA4E1318 and MA4E1319-1 or -2 is per Schottky diode. Measured at an LO frequency of 9.375 Ghz, with an IF frequency of 300 Mhz. LO drive level is +6 dBM for a single Schottky junction. The IF noise figure contribution (1.5 dB) is included.
Absolute Maximum Ratings @ 25 C (Unless Otherwise Noted) 1
Parameter Operating Temperature Storage Temperature Junction Temperature Incident LO Power Incident RF Power Mounting Temperature Absolute Maximum -65 C to +125 C -65 C to +150 C
Forward Current vs Temperature
100.00
10.00
T=125C
Forward Current (mA)
+175 C + 20 dBm + 20 dBm +235 C for 10 seconds
1.00
0.10
T=25C
0.01
T=-50C
1. Operation of this device above any one of these parameters may cause permanent damage.
0.00 0.20 0.30 0.40 0.50 0.60 Forward Voltage (V) 0.70 0.80 0.90 1.00
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.
GaAs Flip Chip Schottky Barrier Diodes
Mounting Techniques
These chips were designed to be inserted onto hard or soft substrates with the junction side down. They can be mounted with conductive epoxy or with a low temperature solder preform. The die can also be assembled with the junction side up, and wire or ribbon bonds made to the pads. Solder Die Attach: Solders with < 30% Sn by volume or weight are recommended. 80 Au / 20 Sn and Indalloy #2 solders are recommended. Do not expose die to a temperature greater than 235C, or greater than 200C for longer than 10 seconds. No more than three seconds of scrubbing should be required for attachment. Conductive epoxy Die Attach: Assembly can be preheated to 125 - 150C. Use a controlled amount of epoxy approximately 2 mils thick. Cure epoxy as per manufacturer's schedule. For extended cure times, temperatures should be kept below 200C.
MA4E1317, MA4E1318, MA4E1319-1, MA4E1319-2 V1
Handling
The following precautions should be observed to avoid damaging these chips: Cleanliness: These chips should be handled in a clean environment. Do not attempt to clean die after installation. Static Sensitivity: Schottky barrier diodes are ESD sensitive and can be damaged by static electricity. Proper ESD techniques should be used when handling these devices. General Handling: The protective polymer coating on the active areas of these die provides scratch protection, particularly for the metal airbridge which contacts the anode. Die can be handled with tweezers or vacuum pickups and are suitable for use with automatic pick-and-place equipment.
3
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.
GaAs Flip Chip Schottky Barrier Diodes
Chip Outline Drawings MA4E1317 Case Style 1278
MA4E1317, MA4E1318, MA4E1319-1, MA4E1319-2 V1
MA4E1318 Case Style 1197
4
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.
GaAs Flip Chip Schottky Barrier Diodes
Chip Outline Drawings MA4E1319-1 Case Style 1199
MA4E1317, MA4E1318, MA4E1319-1, MA4E1319-2 V1
MA4E1319-2 Case Style 1200
5
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.

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