RT0402BRD0749R9L
Yageo
Needs validationlow risk
This Yageo resistor is a high-precision upgrade with matching resistance and superior tolerance and TCR.
Best Alternatives to RTT0249R9FTH
Finding a substitute for the RTT0249R9FTH involves balancing precision, cost, and availability. Key parameters are its 49.9Ω resistance, ±1% tolerance, and 0402 package. Alternatives range from high-precision upgrades to cost-effective options with relaxed parameters.
AI replacement insight
Electrical riskmedium
Tolerance and resistance value mismatches are common risks.
Package risklow
The 0402 package is highly standardized, so physical fit is rarely an issue.
Can it be replaced directly?
No exact drop-in replacement is identified; the best options are either upgrades (thin film) or have slightly different parameters. The Yageo RT0402BRD0749R9L is a strong upgrade candidate.
Best replacement path
For precision, the Yageo RT0402BRD0749R9L is an excellent upgrade with tighter tolerance and TCR. For general use where tolerance is flexible, other thick film resistors can be considered.
Main risk
The main risk is substituting a part with wider tolerance (e.g., ±5%) or a different resistance value, which can affect circuit performance if the design relies on the target's ±1% precision.
Recommended alternatives
3Alternative comparison matrix
| Feature / factor | RTT0249R9FTH | RT0402BRD0749R9L | FRC0402F51R0TS | AC0402JR-0750RL | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0402 | 0402 | 0402 | 0402 | 0402 — Form factor matches.; FRC0402F51R0TS: Form factor matches.; AC0402JR-0750RL: Form factor matches. |
| Resistance | 49.9 Ω | 49.9 Ω | 51.0 Ω | 50.0 Ω | 49.9 Ω / 51.0 Ω / 50.0 Ω — Resistance value matches.; FRC0402F51R0TS: Resistance is a different standard value.; AC0402JR-0750RL: Resistance value is negligibly different. |
| Tolerance | ±1.0% | ±0.1% | ±1.0% | ±5.0% | ±0.1% / ±1.0% / ±5.0% — Candidate has tighter tolerance.; FRC0402F51R0TS: Tolerance matches.; AC0402JR-0750RL: Tolerance is significantly wider. |
| Tcr | Not specified (Typical >100ppm) | 25 ppm/°C | - | - | 25 ppm/°C — Candidate has superior temperature stability. |
| Technology | Thick Film | Thin Film | Thick Film | Thick Film | Thin Film / Thick Film — Different technology may affect noise/pulse handling.; FRC0402F51R0TS: Technology matches.; AC0402JR-0750RL: Technology matches. |
| Application | Commercial | - | - | AEC-Q200 | AEC-Q200 — Candidate is automotive grade. |
Application & sourcing insights
Questions & answers
The Yageo RT0402BRD0749R9L is a strong upgrade, offering better tolerance (±0.1%) and temperature stability. For a similar technology, check for 49.9Ω, ±1% thick film resistors from other vendors.