This part is a kind of semiconductor called 1N4148S.
Function of this product has 100 Volts, Io : 150 mA, HIGH SPEED SWITCHING DIODE.
Package : DO-34
Manufacturers : EIC
Image and pinout :

Some of the text within the PDF file :
This Diode is PRV : 100 Volts Io : 150 mA.
The 1N4148S is a commonly used small signal diode. Diodes are electronic components that allow current to flow in only one direction. The 1N4148S diode is specifically designed for general-purpose switching and high-speed applications.
Package Type: The diode is typically available in a small glass package with two leads.
Maximum Ratings: The maximum ratings indicate the limits beyond which the diode may get damaged.
Forward Voltage Drop: When current flows through the diode in the forward direction, there is a small voltage drop across it. The forward voltage drop for the 1N4148S diode is typically around 0.6 to 0.7 volts.
Reverse Recovery Time: The reverse recovery time refers to the time it takes for the diode to switch from the conducting state to the non-conducting state when the applied voltage changes from forward to reverse bias. The 1N4148S diode has a relatively fast reverse recovery time, making it suitable for high-speed switching applications.
Operating Temperature Range: The diode is designed to operate within a specific
FEATURES :
* Silicon Epitaxial Planar Diode * High reliability * Low reverse current * Low forward voltage drop * High speed switching * Pb / RoHS Free MECHANICAL DATA : Case: DO-34 Glass Case Weight: approx. 0.093g TH97/10561QM TW00/17276EM IATF 0060636 SGS TH07/1033 HIGH SPEED SWITCHING DIODE DO - 34 Glass 0.078 (2.0 )max. Cathode Mark 0.017 (0.43)max. 1.00 (25.4) min. 0.118 (3.0) max. 1.00 (25.4) min. Dimensions in inches and ( millimeters ) MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS Rating at 25 °C ambient temperature unless otherwise specifie. Single phase, half wave, 60 Hz, resistive or inductive load For capacitive load, derate current by 20% RATING
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1N4148S PDF Datasheet Download
