This part is a kind of semiconductor called 1N5251B.

Function of this product has Voltage regulator diodes.

Manufacturers : NXP

Image and pinout :

Some of the text within the PDF file :

DISCRETE SEMICONDUCTORS DATA SHEET M3D176 1N5225B to 1N5267B Voltage regulator diodes Product specification Supersedes data of April 1992 1996 Apr 26 Philips Semiconductors Product specification Voltage regulator diodes FEATURES • Total power dissipation: max. 500 mW • Tolerance series: ±5% • Working voltage range: nom. 3.0 to 75 V • Non-repetitive peak reverse power dissipation: max. 40 W. handbook, halfpage 1N5225B to 1N5267B DESCRIPTION Low-power voltage regulator diodes in hermetically sealed leaded glass SOD27 (DO-35) packages. The series consists of 43 types with nominal working voltages from 3.0 to 75 V. k a MAM239 APPLICATIONS • Low-power voltage stabilizers or voltage references. The diodes are type branded. Fig.1 Simplified outline (SOD27; DO-35) and symb [ ... ]

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