What 5.0SMDJ48CASHRAT7 protects on a telecom line card
The 5.0SMDJ48CASHRAT7 is a 5000W bidirectional TVS diode in the 5.0SMDJ-S series — Littelfuse classifies it for telecom applications, where 48V power rails and long cable runs present transient surge exposure across the full polarity range.
Package, termination, and second-source footprint
Surface-mount termination with tape-and-reel packaging (TR) as standard and cut-tape (CT) as an option — the reel quantity is determined at quote time, so confirm the reel count before committing to a high-volume BOM line.
Active status and sourcing posture
Listed as Active by Littelfuse — no official successor or cross-reference appears in the current record, so the 5.0SMDJ48CASHRAT7 is the canonical part in this series. For telecom platforms with long design-in cycles, this is the line to qualify before a manufacturer migration creates a last-time-buy window.