# Fixed-Expiry SDA

### Fixed-Expiry SDA Contract

The Fixed-Expiry SDA is an implementation of the [Base SDA](https://dev.bondprotocol.finance/smart-contracts/bond-system/auctioneer/sequential-dutch-auctioneer-sda) contract specific to creating fixed-expiry bond markets and deploying an ERC20 bond position token for the market on creation.