
Yageo
Strong match with same package, resistance, tolerance, TCR, and AEC-Q200 qualification.
ERA2AEB102X is a precision, automotive-grade 1 kΩ thin-film resistor in an 0402 package. Finding a substitute requires matching its tight tolerance (±0.1%) and low TCR (±25 ppm/°C).
All suggested alternatives are in the same 0402 package, ensuring form-fit compatibility.
Using a non-AEC part or one with relaxed tolerance/TCR can impact performance and reliability, especially in precision or automotive circuits.
The suggested alternatives from Yageo and UNI ROYAL are widely available from multiple distributors.
Direct replacement for ERA2AEB102X should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Yageo's AT0402BRD071KL is the strongest candidate, matching key electricals and AEC-Q200 qualification.
The primary risk is substituting with a non-AEC-Q200 qualified part or one with a looser tolerance or higher TCR, compromising circuit precision and reliability.

Yageo
Strong match with same package, resistance, tolerance, TCR, and AEC-Q200 qualification.
| Feature / factor | ERA2AEB102X | AT0402BRD071KL | RT0402BRB071KL | TC0225B1001TCC | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0402 (1005 metric) | 0402 | 0402 | 0402 (1005 Metric) | 0402 / 0402 (1005 Metric) — Package size matches.; RT0402BRB071KL: Package size matches.; TC0225B1001TCC: Package size matches. |
| Resistance | 1 kΩ | 1 kΩ | 1 kΩ, ±0.1% | 1 kΩ, ±0.1% | 1 kΩ / 1 kΩ, ±0.1% — Resistance matches.; RT0402BRB071KL: Resistance and tolerance match.; TC0225B1001TCC: Resistance and tolerance match. |
| Tolerance | ±0.1% | ±0.1% | - | - | ±0.1% — Precision tolerance matches. |
| Tcr | ±25 ppm/°C | ±25 ppm/°C | 10 ppm/°C | ±25 ppm/°C | ±25 ppm/°C / 10 ppm/°C — Temperature coefficient matches.; RT0402BRB071KL: Candidate has a better (lower) TCR.; TC0225B1001TCC: Temperature coefficient matches. |
| Application | AEC-Q200 Grade 1 | AEC-Q200 | Not specified | Not specified | AEC-Q200 / Not specified — Both parts are automotive qualified.; RT0402BRB071KL: Candidate is not AEC-Q200 qualified.; TC0225B1001TCC: Candidate is not AEC-Q200 qualified. |
| Power | 0.063W | 0.0625W | - | - | 0.0625W — Slightly lower power rating, negligible for most uses. |
Verified drop-in options for ERA2AEB102X 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.