TERADYNE Semiconductor Tester OFM Board CY7C291A-35WMB

This item is an OFM function board for a Teradyne semiconductor tester, featuring an onboard CY7C291A-35WMB memory chip. The CY7C291A is a 2K×8-bit CMOS One-Time Programmable (OTP) PROM manufactured by Cypress, with an access speed of 35ns. It comes in a 24-pin DIP package and is rated for a wide temperature range. The board uses this chip to store fixed test programs and calibration data, which are accessible immediately upon power-up; the data is non-volatile and highly resistant to interference. This unit is an original component—either salvaged from equipment or sourced from existing inventory—and remains in its original, unrepaired, and unmodified condition. It has undergone power-on and data-read testing. It is compatible with relevant Teradyne test platforms and is well-suited for use as a spare part on production lines or for emergency repairs.