AT0402BRD0749K9L
Yageo
Needs validationlow risk
An excellent upgrade with identical resistance and package, but superior tolerance and temperature stability.
Best Alternatives to AC0402FR-0749K9L
Yageo's AC0402FR-0749K9L is a 49.9kΩ, 1% tolerance, 0402 thick film chip resistor qualified for automotive use (AEC-Q200). This page provides analysis of potential alternatives.
AI replacement insight
Electrical riskmedium
Using parts with different resistance or tolerance requires circuit analysis.
Package risklow
All viable candidates share the same 0402 package, ensuring physical compatibility.
Can it be replaced directly?
Yes, AT0402BRD0749K9L is a strong candidate for direct replacement, offering superior electrical characteristics in the same 0402 package.
Best replacement path
Use AT0402BRD0749K9L, an upgrade with tighter tolerance and TCR. For cost-sensitive designs, parametric alternatives may be considered after verification.
Main risk
The main risk is using a parametric alternative with a different resistance value or a downgrade with looser tolerance without verifying circuit impact.
Recommended alternatives
4Alternative comparison matrix
| Feature / factor | AC0402FR-0749K9L | AT0402BRD0749K9L | AC0402FR-0752K3L | AC0402FR-0753K6L | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0402 | 0402 | 0402 | 0402 | 0402 — Form and fit are identical.; AC0402FR-0752K3L: Form and fit are identical.; AC0402FR-0753K6L: Form and fit are identical.; AC0402JR-0747KL: Form and fit are identical. |
| Resistance | 49.9 kΩ | 49.9 kΩ | 52.3 kΩ | 53.6 kΩ | 49.9 kΩ / 52.3 kΩ / 53.6 kΩ / 47 kΩ — Resistance value is identical.; AC0402FR-0752K3L: Resistance is 4.8% higher.; AC0402FR-0753K6L: Resistance is 7.4% higher.; AC0402JR-0747KL: Resistance is 5.8% lower. |
| Tolerance | ±1% | ±0.1% | ±1% | ±1% | ±0.1% / ±1% / ±5% — Candidate has tighter tolerance.; AC0402FR-0752K3L: Tolerance is identical.; AC0402FR-0753K6L: Tolerance is identical.; AC0402JR-0747KL: Tolerance is significantly looser. |
| Tcr | ~±100 ppm/°C | ±25 ppm/°C | - | - | ±25 ppm/°C — Candidate has better temperature stability. |
| Technology | Thick Film | Thin Film | - | Thick Film | Thin Film / Thick Film — Technology differs; thin film is often an upgrade but check pulse handling.; AC0402FR-0753K6L: Technology is identical. |
Application & sourcing insights
Questions & answers
The best alternative is AT0402BRD0749K9L. It offers the same 49.9kΩ resistance in an identical 0402 package but provides an upgrade with tighter tolerance (±0.1%) and better temperature stability (±25 ppm/°C).