Thank you for selecting Aerospace Aviation 360 for EFS-31D by Tdk Lambda Ltd under Sensor Misc. We are proud to be an ASAP Semiconductor owned and operated website, a leading distributor of aviation and aerospace part numbers like EFS-31D. To help us better understand your parts requirements, please fill out an RFQ form for part number EFS-31D with your details, and our customer executive will respond to your RFQ in 15 minutes or less.