Is there a pin-compatible replacement for RT0805BRD0749R9L?

Yes, several resistors share the 0805 package and 2-pin layout. However, a true 'drop-in' replacement depends on matching critical electrical parameters like resistance (49.9Ω), tolerance (±0.1%), and TCR (25 ppm/°C). Always verify datasheet specifications.

What risks should I check before replacing RT0805BRD0749R9L?

The main risks are changes in resistance value, tolerance, and temperature stability (TCR). The target is a high-precision part; using a substitute with wider tolerance (e.g., 1% or 5%) or higher TCR can affect circuit accuracy and performance, especially in sensitive analog or measurement applications.

RT0805BRD0749R9L Alternatives, Datasheet & Cross Reference | Yageo

Reviewing alternatives for the Yageo RT0805BRD0749R9L, a 49.9 Ohm 0.1% 0805 thin film resistor. Key considerations for substitutes include resistance value, tolerance, and temperature coefficient (TCR).

AI replacement insight

Electrical riskmedium

Substitutes may have different resistance, tolerance, or TCR, impacting circuit accuracy.

Package risklow

All viable candidates share the same 0805 package.

Can it be replaced directly?

No exact direct replacement is listed. The closest options, like RT0805BRD0751RL, have a slightly different resistance (51Ω vs 49.9Ω) and require engineering review.

Best replacement path

Use another high-precision (0.1%, 25ppm) thin film 0805 resistor with the closest available resistance value, like 51Ω or 47Ω.

Main risk

Degradation of circuit precision due to differences in resistance, tolerance, or TCR.

Recommended alternatives

Parametric alternative with a lower resistance value (47Ω vs 49.9Ω).

View details

Alternative comparison matrix

Feature / factor	RT0805BRD0749R9L	RT0805BRD0747RL	RT0805BRD0751RL	Compatibility / risk
Package	0805	0805	0805	0805 — Same package and pin count.; RT0805BRD0751RL: Same package and pin count.
Resistance	49.9 Ohm	47.0 Ohm	51.0 Ohm	47.0 Ohm / 51.0 Ohm — Lower resistance (-5.8%).; RT0805BRD0751RL: Slightly higher resistance (+2.2%).
Tolerance	±0.1%	±0.1%	±0.1%	±0.1% — Precision matches.; RT0805BRD0751RL: Precision matches.
Tcr	25 ppm/°C	25 ppm/°C	25 ppm/°C	25 ppm/°C — Temperature stability matches.; RT0805BRD0751RL: Temperature stability matches.
Technology	Thin Film	-	Thin Film	Thin Film — Same technology.

Application & sourcing insights

Questions & answers

The closest alternatives are typically other parts in the Yageo RT series, such as RT0805BRD0751RL (51Ω). These offer the same package and precision but require verifying the resistance difference is acceptable for your circuit.