What the 5KP110CA-G does and where it fits
The 5KP110CA-G is a bidirectional transient voltage suppressor — a Zener-type clamp that becomes conductive once the line voltage exceeds its breakdown threshold, shunting the excess energy to ground and protecting downstream circuitry from voltage transients. With a typical reverse standoff of 110V and a minimum breakdown of 122V, it sits in the upper mid-voltage band for AC or reversible DC rails, and the CA suffix confirms it clips both polarities — critical on any line where the polarity can reverse or where you need symmetrical protection on a bipolar supply. The peak pulse power rating of 5000W at a 10/1000 µs waveform means it survives a single-event transient with 28.25A flowing at the clamping voltage of 177V. For a real protection design the clamping voltage — not the standoff — is the number that gates downstream component ratings: whatever is behind this diode must survive 177V applied across it during the clamping event. General-purpose classification means it is not qualified to an AEC-Q automotive screen — for under-hood or cabin-domain protection you need an automotive-graded TVS with tighter screening and PPAP documentation. For telecom DC rails, industrial control power, and non-safety-critical DC buses, it is a straightforward fit in the 48–120 V nominal range.
R-6 axial through-hole: what the package means for assembly
The R-6 axial package requires through-hole mounting — it lands on a PCB with lead holes and gets wave-soldered or hand-soldered. The Tape & Box packaging option ships the part with leads formed to the taping pitch, which suits automated axial lead-form and insertion equipment. If your line uses hand placement, confirm the lead spacing and bend radius against the Comchip drawing — axial leads are forgiving on pitch but sensitive to the amount of unsupported span during wave contact. Power line protection is listed as No — this part is not certified as a primary power-line protection device per IEC 62368 or similar. That eliminates it as the only protection element on an AC mains input; it can sit downstream of a primary MOV or gas discharge tube as a secondary clamp, but a standalone AC line entry design needs a device with that classification.
Lifecycle is Active per the manufacturer. This is not an NRND or EOL part — Comchip continues production under their own brand, and the R-6 package is a long-run axial format that remains straightforward for through-hole assembly lines. Quoted to order through independent distribution; availability and current lead times are confirmed against the BOM quantity at RFQ.