This part is a kind of semiconductor called 1N4466.

Function of this product has 1.5 WATT Voltage Regulators.

Manufacturers : Semtech

Image and pinout :

Some of the text within the PDF file :

1N4460 THRU 1N4496 Axial Leaded, Hermetically Sealed, 1.5 WATT Voltage Regulators POWER DISCRETES Description Features Quick reference data V = 6.2 - 200V R IZ (MAX) = 7.2mA - 230mA ZZ = 4Ω - 1500Ω I = 0.05µA - 10µA R Electrical Specifications Electrical specifications @ TA = 25°C unless otherwise specified. Low dynamic impedance Hermetically sealed. 1.5 Watt applications Low reverse leakage currents Small package These products are qualified to MIL-PRF-19500/406. They can be supplied fully released as JAN, JANTX, JANTXV and JANS versions. Device Types VV ZZ Nom Min VV V I Test ZZ Z Z Z I Max V (reg) I @ KZ z ZSM V R I R α VZ I ZK Ιr Max Current Imped. Knee DC Voltage TA= +25°C Reverse Reverse Temp. Test Reverse TA=+25°C Imped. Current Reg. Voltage Current C [ ... ]

1N4466 PDF Datasheet Download