MACOM MADS-002502-1246LP

The MA4E2502 Surmount™ series diodes are silicon-based low, medium, and high barrier Schottky devices fabricated using a patented Heterolithic Microwave Integrated Circuit (HMIC) process. HMIC circuits consist of silicon mesas that form diodes or via conductors, embedded in a glass dielectric that serves as a low-dispersion microstrip transmission medium. The combination of silicon and glass gives HMIC devices excellent loss and power dissipation characteristics in a low-profile, reliable package.

Surmount™ Schottky devices are ideal for circuits requiring the low parasitics of beam lead devices combined with the superior mechanical properties of a die. The Surmount™ structure uses extremely low-resistance silicon vias to connect the Schottky contact to a metallized mounting pad on the bottom surface of the die. These devices are reliable, repeatable, and offer a low-cost, high-performance alternative to conventional devices. Compared to conventional beam lead Schottky diodes, they exhibit lower sensitivity to electrostatic discharge.

The multilayer metallization used in fabricating the Surmount™ Schottky junction includes a platinum diffusion barrier, enabling all devices to withstand non-operating stabilization baking at 300°C for 16 hours.

The "0502" footprint allows surface mounting and versatile polarity orientation.

The MA4E2502 series Surmount™ Schottky diodes are recommended for microwave circuit applications up to Ku-band frequencies in low-power applications such as mixers, subharmonic mixers, detectors, and limiters. The HMIC construction facilitates direct replacement of more fragile beam lead diodes with the corresponding Surmount™ diode, which can be solder-attached to hard or soft substrate circuits.

• Ultra-low parasitic capacitance and inductance
• Surface-mountable for microwave circuits without wire bonding
• Rugged HMIC construction with polyimide scratch protection
• Reliable multilayer metallization with diffusion barrier, 100% stabilization bake (300°C, 16 hours)
• Reduced susceptibility to ESD damage

The MA4E2502 series Surmount™ Schottky diodes are recommended for low-power applications in microwave circuits up to Ku-band frequencies, such as mixers, subharmonic mixers, detectors, and limiters.