The NXP KTY family is discontinued with no official replacement. The table below maps each obsolete part to the pin-and-curve compatible Baoerxun LPTC model in DO-35 glass package.
DO-35 glass package, pin-identical to NXP KTY81/83/84 — no board changes
Nominal R25/R100 matched model-by-model, interchangeable R-T curve
Key replacement models in stock, week-level lead time
In-house silicon chip, consistency matched to original parts
| Obsolete NXP Part | Baoerxun Replacement | Nominal Resistance | Temperature Range |
|---|---|---|---|
| KTY81-110 / -120 / -121 / -122 / -150 / -151 / -152 | LPTC81-110 / -120 / -121 / -122 / -150 / -151 / -152 | R25 = 1000 Ω | -55 ~ +150 ℃ |
| KTY81-210 / -220 / -221 / -222 / -250 / -251 / -252 | LPTC81-210 / -220 / -221 / -222 / -250 / -251 / -252 | R25 = 2000 Ω | -55 ~ +150 ℃ |
| KTY83-110 / -120 / -121 / -122 / -150 / -151 / -152 | LPTC83-110 / -120 / -121 / -122 / -150 / -151 / -152 | R25 = 1000 Ω | -40 ~ +175 ℃ |
| KTY84-130 / -150 / -151 / -152 | LPTC84-130 / -150 / -151 / -152 | R100 = 1000 Ω | -40 ~ +180 ℃ |
Note: exact parameters and tolerances follow our approval sheets. Verify the resistance-vs-temperature table over your operating range before requalification.