This part is a kind of semiconductor called 7100.

Function of this product has T- Subminiature Lamps.

Manufacturers : Gilway Technical Lamp

Image and pinout :

Some of the text within the PDF file :

T-¾ Subminiature Lamps Line No. Part No. Wire Lead 7100 7101 8534 3102 30 8537 6803 6833 6153 7133 8666 7153 7102 L51 L54 *L57 MOL Part No. Miniature Flanged 3810 3811 7121 8538 8587 8913 6183 8828 8383 8270 7123 L52 L55 *L58 Part No. Bi-Pin Volts 7810 7811 7111 7538 7113 7114 7115 7116 7117 7118 7119 L53 L56 *L59 1.5 1.5 2.5 4.5 4.5 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 12.0 14.0 28.0 Amps 0.010 0.015 0.110 0.022 0.021 0.015 0.060 0.060 0.060 0.075 0.080 0.115 0.115 0.060 0.050 0.024 Filament M.S.C.P. Type 0.002 0.003 0.060 0.018 0.017 0.02 0.03 0.05 0.15 0.09 0.15 0.15 0.20 0.15 0.13 0.10 C-2R C-2R C-2R C-2R C-2R C-2R C-2R C-2R C-2R C-2R C-2R C-2R C-2R C-2F C-2F CC-2F Life Hours 10,000 5,000 10,000 5,000 5,000 1,000 100,000 100,000 3,000 25,000 15,000 40,000 5,000 [ ... ]

7100 PDF Datasheet Download