Med. Barrier Si Ring Quad

The MA4E2532-1113 Series SURMOUNTTM Low and Medium Barrier, Silicon Schottky Ring Quad Diodes are fabricated with the patented Heterolithic Microwave Integrated Circuit (HMIC™) process. HMIC™ circuits consist of Silicon pedestals which form diodes or via conductors embedded in a glass dielectric, which acts as the low dispersion, low loss, microstrip transmission medium. The combination of silicon and glass allows HMIC™ devices to have excellent loss and power dissipation characteristics in a low profile, reliable device. The Surmount Schottky devices are excellent choices for circuits requiring the small parasitics of a beam lead device coupled with the superior mechanical performance of a chip. The Surmount structure employs very low resistance silicon vias to connect the Schottky contacts to the metalized mounting pads on the bottom surface of the chip. These devices are reliable, repeatable, and a lower cost performance solution to conventional devices. They have lower susceptibility to electrostatic discharge than conventional beam lead Schottky diodes. The multi-layer metallization employed in the fabrication of the Surmount Schottky junctions includes a platinum diffusion barrier, which permits all devices to be subjected to a 16-hour non-operating stabilization bake at 300°C. The “0505” outline allows for Surface Mount placement and multi-functional polarity orientations.

Product Specifications

Part Number
Med. Barrier Si Ring Quad
Total Capacitance(pF)
Dynamic Resistance(ohms)
Junction Capacitance(pF)
Package Category
Surface Mount Die


  • Extremely Low Parasitic Capacitance and Inductance
  • Lower Susceptibility to ESD Damage
  • Reliable, Multilayer Metalization with a Diffusion Barrier, 100% Stabilization Bake (300°C, 16 hours)
  • Rugged HMIC Construction with Polyimide Scratch Protection
  • Surface Mountable in Microwave Circuits, No Wirebonds Required

Order from MACOM

HMIC Surmount SCHOTTKY Ring Quad
MA4E2532L-1113 Distributors