Is there a pin-compatible replacement for RT0805BRD0749K9L?

Yes, several pin-compatible 0805 resistors exist, such as RT0805BRD0751KL. However, they have different resistance values and are not drop-in replacements without verifying the impact on your circuit.

What risks should I check before replacing RT0805BRD0749K9L?

The main risks are changes in resistance, tolerance, and temperature coefficient (TCR). The target is a high-precision part (0.1%, 25ppm/°C), and using a lower-spec part can degrade circuit performance. Always verify the new resistance value is acceptable for your design.

RT0805BRD0749K9L Alternatives, Datasheet & Cross Reference | Yageo

RT0805BRD0749K9L is a 49.9kΩ, 0.1% tolerance, 0805 thin-film precision resistor from Yageo. Finding a substitute requires matching its high precision, stability, and physical package.

AI replacement insight

Electrical riskmedium

Resistance value change is the main concern for precision applications.

Package risklow

Candidates share the common 0805 package.

Can it be replaced directly?

No direct, drop-in replacement with the exact 49.9kΩ resistance value was found. Alternatives with nearby standard resistance values exist but require engineering review.

Best replacement path

The closest alternatives are other 0805 thin-film resistors like Yageo's RT0805BRD0751KL (51kΩ), but require verifying the impact of the resistance change.

Main risk

The primary risk is the change in resistance value, which can affect the accuracy and performance of precision circuits like voltage dividers or feedback networks.

Recommended alternatives

A parametric alternative from the same series with a slightly higher resistance of 51kΩ.

View details

Alternative comparison matrix

Feature / factor	RT0805BRD0749K9L	RT0805BRD0751KL	TC0525B4702T5G	AC0805FR-0747KL	Compatibility / risk
Package	0805	0805	0805	0805	0805 — Same package and pin count.; TC0525B4702T5G: Same package and pin count.; AC0805FR-0747KL: Same package and pin count.
Resistance	49.9kΩ	51kΩ	47kΩ	-	51kΩ / 47kΩ — Candidate resistance is ~2.2% higher.; TC0525B4702T5G: Candidate resistance is ~5.8% lower.
Tolerance	0.1%	0.1%	0.1%	1%	0.1% — Precision tolerance matches.; TC0525B4702T5G: Precision tolerance matches.; AC0805FR-0747KL: Tolerance is 10x wider.
Tcr	25 ppm/°C	25 ppm/°C	25 ppm/°C	±100 ppm/°C	25 ppm/°C / ±100 ppm/°C — Temperature coefficient matches.; TC0525B4702T5G: Temperature coefficient matches.; AC0805FR-0747KL: TCR is 4x worse.
Technology	Thin Film	Thin Film	-	Thick Film	Thin Film / Thick Film — Same high-stability technology.; AC0805FR-0747KL: Lower stability technology.

Application & sourcing insights

Questions & answers

Yageo's RT0805BRD0751KL is a strong candidate, offering the same technology and precision with a slightly higher resistance of 51kΩ. Its suitability depends on your circuit's tolerance to this ~2.2% resistance deviation.