10DC-4R dual diode COMMON ANODE by International Rectifier. Package: Unique 3-pin Plastic and RED coloured resin tombstone block. Please note these items although clearly marked IR were originally sold by National Panasonic as: RVD10DC4R and used as a basic rectifier in audio equipment paired with the common cathode version. can also be found in Sansui and Yamaha audio amps of the same era. Status: NOS (New Old Stock) Tested components: YES RoHS compliant : no *** note : (RED resin back indicated common Anode - these ones ! ) *** *** note: (Black resin back indicates common cathode - NOT these ones ! ) ***