| Type | Manufacturer |
|---|---|
| Website | https://www.gpd-ir.com/ |
| Phone number | +1 603-894-6865 |
| Address | 7 Manor Parkway, Salem, NH 03079 USA |
  |
GPD has been a manufacturer of power and high speed Germanium transistors and diodes since 1973 and a manufacturer of infrared photodetectors since 1985.
