The reference voltage makes use of the handy TO package.There are various functions associated with terminations 3.Reflow soldering should take place at a temperature of 240 more than 240.
SPX2815AR-3.3 Features
Peak Reflow Temperature: 240
SPX2815AR-3.3 Applications
There are a lot of Sipex SPX2815AR-3.3 Voltage Reference applications.