This means onsemi has ceased production; no last-time-buy or future manufacturing is planned. For BOM lines that still require this exact order code, procurement must rely on independent distribution or surplus inventory to fill the quantity. The part is supplied by onsemi, and the base product number is P6SMB. The Tape & Reel (TR) package indicates it was originally intended for automated pick-and-place assembly.
P6SMB43CAT3 onsemi Obsolete TVS Diode – Tape & Reel
MPNP6SMB43CAT3
Obsolete
onsemi P6SMB series, P6SMB43CAT3, Tape & Reel (TR) package, Circuit Protection TVS diode, base product number P6SMB.
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026
Specifications
| Parameter | Value |
|---|---|
| Package | Tape & Reel (TR) |
Product details
Frequently asked questions
Is P6SMB43CAT3 obsolete?
Yes, the manufacturer lists it as Obsolete. onsemi has discontinued production. No future manufacturing is planned.
What is the replacement for P6SMB43CAT3?
Within the same P6SMB series, P6SMB43A is a candidate but is unidirectional. Verify your circuit's polarity requirement before substituting. For a bidirectional replacement, check other P6SMB parts with a 'C' suffix in the same voltage class.