This part is a kind of semiconductor called 1N100.

Function of this product has Optimized for Radio Frequency Response.

Manufacturers : Microsemi Corporation

Image and pinout :

Some of the text within the PDF file :

Gold Bonded 1N100A Germanium Diodes Optimized for Radio Frequency Response Can be used in many AM, FM and TV-IF applications, replacing point contact devices. Applications AM/FM detectors Ratio detectors FM discriminators TV audio detectors RF input probes TV video detectors 0.018-0.022" 0.458-.558 mm DO-7 Glass Package Features Lower leakage current Flat junction capacitance High mechanical strength At least 1 million hours MTBF 1.0" 25.4 mm (Min.) Length 0.230-0.30" 5.85-7.62mm Dia 0.085-.107 " 2.16-2.71 mm BKC's Sigma-Bond™ plating for problem free solderability Absolute Maximum Ratings at Tamb = 25 OC unless otherwise specified Parameter Symbols Peak Inverse Voltage PIV Peak Forward Surge Current Non-Repetitive, t = 1 Second IFSM Peak Forward Surge Current Repetitive IFSR A [ ... ]

1N100 PDF Datasheet Download