
Yageo
A strong alternative with matching package, resistance, tolerance, and TCR.
Finding a substitute for the PTFR0603B3K60P9, a 3.6kΩ 0.1% 0603 precision resistor, requires matching tolerance and TCR. Several alternatives exist with varying levels of compatibility.
High risk if tolerance, TCR, or technology are not matched for precision applications.
0603 is a standard SMT package with low interchangeability risk.
Direct replacement for PTFR0603B3K60P9 should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
The most direct replacement path is to use another thin-film 0603 resistor with 3.6kΩ resistance, ±0.1% tolerance, and a TCR of ±25ppm/°C, such as the Yageo RT0603BRD073K6L.
The primary risk is substituting with a lower-precision resistor (e.g., thick film, >0.1% tolerance), which can compromise the performance of precision analog circuits, references, or dividers.

Yageo
A strong alternative with matching package, resistance, tolerance, and TCR.
| Feature / factor | PTFR0603B3K60P9 | RT0603BRD073K6L | RS-03K3601FT | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0603 | 0603 | 0603 | 0603 — Matches target package.; RS-03K3601FT: Matches target package. | |
| Resistance | 3.6kΩ | 3.6kΩ | - | 3.6kΩ — Matches target resistance. | |
| Tolerance | ±0.1% | ±0.1% | ±1% | ±0.1% / ±1% — Matches target precision.; RS-03K3601FT: 10x wider tolerance than target. | |
| Power | 0.1W | 0.1W | - | 0.1W — Matches target power rating. | |
| Tcr | ±25ppm/℃ | 25 ppm/°C | ±100ppm/℃ | 25 ppm/°C / ±100ppm/℃ — Matches target temperature coefficient.; RS-03K3601FT: 4x higher TCR than target. | |
| Technology | Thin Film | - | Thick Film | Thick Film — Different resistor technology. |
Verified drop-in options for PTFR0603B3K60P9 are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.