
FOJAN
A pin-compatible 1206 resistor with matching resistance, tolerance, and power, but lacks AEC-Q200 qualification.
Yageo's RL1206FR-070R39L is a 0.39Ω, 1% tolerance, 0.25W current sense resistor in a 1206 package, qualified for automotive (AEC-Q200) applications. Finding a precise replacement requires matching these key parameters.
Some candidates have different resistance values or significantly worse Temperature Coefficients (TCR).
All viable candidates use the same 1206 package, ensuring physical compatibility.
Direct replacement for RL1206FR-070R39L should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
The closest alternative is Yageo's RL1206FR-070R4L, from the same series with a minor resistance change to 0.4Ω. For non-automotive use, FOJAN FRL1206FR390TS is a strong match.
The primary risk is substituting a non-AEC-Q200 qualified part into an automotive application, or using a part with a different resistance or temperature coefficient (TCR).

FOJAN
A pin-compatible 1206 resistor with matching resistance, tolerance, and power, but lacks AEC-Q200 qualification.
| Feature / factor | RL1206FR-070R39L | FRL1206FR390TS | RL1206FR-070R4L | 1206W4F390LT5E | Compatibility / risk |
|---|---|---|---|---|---|
| Resistance | 0.39Ω | 0.39Ω | 0.4Ω | 0.39Ω | 0.39Ω / 0.4Ω — Exact match.; RL1206FR-070R4L: Slightly higher resistance (+2.6%).; 1206W4F390LT5E: Exact match. |
| Tolerance | 1% | 1% | - | - | 1% — Exact match. |
| Power | 0.25W | 0.25W | 0.25W | - | 0.25W — Exact match.; RL1206FR-070R4L: Identical power rating. |
| Package | 1206 | 1206 | 1206 | 1206 | 1206 — Form and fit are identical.; RL1206FR-070R4L: Identical package.; 1206W4F390LT5E: Identical package. |
| Application | Yes (AEC-Q200) | No | Yageo RL Series | No | No / Yageo RL Series — Target is AEC-Q200 qualified for automotive use, candidate is not.; RL1206FR-070R4L: Same manufacturer and AEC-Q200 qualified series.; 1206W4F390LT5E: Target is AEC-Q200 qualified, candidate is not. |
| Tcr | ≤ ±200 PPM/°C (Typical for RL series) | - | - | ±800 PPM/°C | ±800 PPM/°C — Candidate TCR is significantly worse, indicating poor temperature stability. |
Verified drop-in options for RL1206FR-070R39L 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.