NTE5940 thru NTE5953 Silicon Power Rectifier Diode, 15 Amp
 
Description and Features: 
-Low Thermal Impedance 
-High Case Temperarure 
-Excellent Reliability 
-Available in Anode–to–Case or Cathode–to–Case Style
 
Full spec sheet:
https://www.nteinc.com/specs/5900to5999/pdf/nte5940_53.pdf