ZR431LC01 adjustable voltage shunt regulator by Diodes Inc. Zetex. Range: 1.24 ~ 10V Tollerance : 1% Package: TO-92 with pre-formed leads Download Zetex ZR431LC01 datasheet: Status: PNOS (Perfect New Old Stock) supplied on tape. RoHS compliant: YES **currently selling on UK auction sites for £4.99 each ***