Also Offering RoHs Compliant MA44700 Series Surface Mount Low Power Step Recovery Diodes V4 Absolute Maximum Ratings @ TA=+25 °C Features • • • • • (Unless Otherwise Noted) 1 Parameter Absolute Maximum Operating Temperature -65 °C to +125 °C Storage Temperature -65 °C to +125 °C Reverse Voltage 30V Forward Bias Current 50 mA Power Dissipation 250 mW Surface Mount Packages (SOT-23,SC-79) Low transition times SPC Process for Superior C-V Repeatability Tape and Reel Packaging Designed for Commercial Wireless Applications Description 1. Operation of this device above any one of these parameters may cause permanent damage. 2. Please refer to application note M538 for surface mounting instructions Typical Capacitance vs. Bias (V) freq=1MHz 8 MA44768 7 MA44769 6 Capacitance (pF) The MA44700 series of Step Recovery diodes is designed for use in low power multipliers with output frequencies of up to 5 GHz. These Step Recovery diodes generate harmonics by storing a charge as the diode is driven to forward conductance by the positive voltage of the input signal. When the signal reverses polarity, this charge is extracted. The Step Recovery diode will appear as a low impedance currentsource until all the charge is extracted, then it will “snap” to a higher impedance. This causes a voltage pulse to form in the impulse circuit of the multiplier. Step Recovery diodes make excellent high order multipliers such as comb generators. They are also useful as efficient moderate power X2-X4 multipliers. MA44767 5 4 3 2 Applications The MA44700 series step recovery are useful for surface mount low power applications. 1 0 0 5 10 15 20 25 30 Bias(V) CT2 Reverse Voltage (pF) (V) f=1 MHz, VR=6.0V Ir =10 uA RoHs Compliant 1 2 1 Nominal Carrier Transition Time (nS) (pS) Nominal Input Nominal Output (GHz) (GHz) Part Number (non-RoHs) Available Part Numbers Min. Max. Min. Typical Max MA44767-287T MAVR-044767-0287AT MAVR-044767-12790T 3.0 4.5 30 250-500 600 0.05-5 0.5-1.5 MA44768-287T MAVR-044768-0287AT MAVR-044768-12790T 1.6 2.4 30 75-225 250 0.1-1 0.5-2.5 MA44769-287T MA144769-287T MAVR-044769-12790T 0.8 1.2 30 20-50 150 0.1-1 1-5 The prefix defines package style, configuration and packaging information. Contact representative for complete part identification. Capacitance @ 1 MHz 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. Also Offering RoHs Compliant MA44700 Series Surface Mount Low Power Step Recovery Diodes V4 Case Styles SOT-23 Case Style 287 SOT-23 (Case Style 287) DIM. F A N A D B M G K L H E C J SC-79 Case Style 1279 MIN. ⎯ 0.048 B C D E F G H J K L 0.008 ⎯ 0.040 ⎯ 0.013 0.020 0.003 0.006 0.110 0.119 0.047 0.056 0.037 typical 0.075 typical 0.103 ⎯ 0.024 ⎯ DIM. GRADIENT M N 10° max.1 2° . . .30° MILLIMETERS MIN. MAX. ⎯ 1.22 0.20 ⎯ 1.00 ⎯ 0.35 0.50 0.08 0.15 2.80 3.00 1.20 1.40 0.95 typical ⎯ 1.90 typical 2.60 ⎯ 0.60 SC-79 (Case Style 1279) Topview B Cathode Mark 10° Max Seating Plane F INCHES MAX. E C D A INCHES MAX. DIM. MIN. A B C D E F G H 0.020 0.003 0.006 0.010 0.059 0.043 0.011 0.037 typical 0.028 0.008 0.010 0.014 0.067 0.051 0.012 0.043 MILLIMETERS MIN. MAX. 0.50 0.08 0.15 0.25 0.08 1.50 0.28 0.94 0.71 0.20 0.25 0.36 0.15 1.30 0.30 1.09 10° Max G 2 H 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. Also Offering RoHs Compliant MA44700 Series Surface Mount Low Power Step Recovery Diodes Mounting Information V4 SOT-23 .030 min. 0.80 The illustration indicates the recommended mounting pad configuration for the SOT-23 and SC-79 packages. Solder paste containing flux should be screened onto the pads to a thickness of 0.005- 0.007 inches. The plastic package is placed in position, firmly adhering to the solder paste. .090 2.2 .035 min. 0.90 .037 0.95 0.75 1.9 Dimenstions: inches mm Permanent attachment is performed by a reflow soldering procedure during which the tab temperature does not exceed +275 °C and the body temperature does not exceed +250 °C, for standard models and +260 °C for the RoHS compliant devices. SC-79 0.020 0.50 Please refer to Application Note M538 for surface mounting instructions. 0.020 0.50 0.053 1.35 Dimenstions: inches mm Package Configuration SOT-23 Case Style 287 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. SC-79 Case Style 1279 • 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.