RTT021001FTH
RALEC
Needs validationhigh risk
A general purpose resistor with matching electricals but not automotive grade.
Best Alternatives to AF0402FR-071KL
Yageo's AF0402FR-071KL is an AEC-Q200 qualified, anti-sulfur thick film resistor for automotive applications. Finding a substitute requires matching not only the electrical parameters but also these critical reliability and environmental qualifications.
AI replacement insight
Electrical riskhigh
Risk of failure if used in applications requiring automotive grade reliability or sulfur resistance.
Package risklow
All candidates share the same 0402 package, ensuring physical compatibility.
Can it be replaced directly?
No direct, drop-in replacement has been identified among the candidates, as none are confirmed to be both AEC-Q200 qualified and anti-sulfurated.
Best replacement path
Search for another AEC-Q200 qualified, anti-sulfurated 0402 1kΩ 1% resistor from Yageo's 'AF' series or an equivalent series from another manufacturer.
Main risk
Using a non-automotive, non-anti-sulfur resistor can lead to premature component failure in automotive or high-sulfur industrial environments.
Recommended alternatives
6Alternative comparison matrix
| Feature / factor | AF0402FR-071KL | RTT021001FTH | WR04X1001FTL | RT0402BRB071KL | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0402 | 0402 | 0402 (1005 metric) | 0402 | 0402 / 0402 (1005 metric) — Package size matches.; WR04X1001FTL: Package size matches.; RT0402BRB071KL: Package size matches.; RT0402BRE071KL: Package size matches. |
| Resistance | 1 kΩ | 1 kΩ | 1 kΩ | - | 1 kΩ — Resistance matches.; WR04X1001FTL: Resistance matches. |
| Tolerance | ±1% | ±1% | ±1% | ±0.1% | ±1% / ±0.1% — Tolerance matches.; WR04X1001FTL: Tolerance matches.; RT0402BRB071KL: Tighter tolerance may be an upgrade.; RT0402BRE071KL: Tighter tolerance may be an upgrade. |
| Application | AEC-Q200, Anti-Sulfurated | General Purpose | General Purpose | General Purpose | General Purpose — Lacks automotive grade qualification.; WR04X1001FTL: Lacks automotive grade qualification.; RT0402BRB071KL: Lacks automotive grade qualification.; RT0402BRE071KL: Lacks automotive grade qualification. |
| Tcr | ±100 ppm/°C | - | ≤ ±100 ppm/°C | 10 ppm/°C | ≤ ±100 ppm/°C / 10 ppm/°C / 50 ppm/°C — Temperature coefficient matches.; RT0402BRB071KL: Much lower TCR provides high stability.; RT0402BRE071KL: Lower TCR provides better stability. |
| Technology | Thick Film | - | - | Thin Film | Thin Film — Different technology may affect performance.; RT0402BRE071KL: Different technology may affect performance. |
Application & sourcing insights
Questions & answers
The best alternative is another resistor that is also AEC-Q200 qualified and anti-sulfurated, such as a different part from Yageo's AF series or a competitor's equivalent automotive series. A general-purpose resistor is not a safe substitute for automotive applications.