
FOJAN
A pin-compatible 0603 resistor with identical resistance, tolerance, power, and TCR ratings.
Finding a substitute for the 0603WAF1051T5E 1.05kΩ resistor involves matching the 0603 package, 0.1W power rating, and 1% tolerance. Several options exist, including direct pin-compatible matches and parametric alternatives with slightly different resistance values.
All suggested alternatives are in the same 0603 package, ensuring physical compatibility.
Risk is low for the pin-to-pin match, but medium for parametric alternatives due to resistance deviation. Circuit validation is required.
Yes, FRC0603F1051TS is a direct pin-compatible replacement for 0603WAF1051T5E, sharing the same package, resistance, tolerance, and power rating.
The best replacement path is FRC0603F1051TS by FOJAN, which is a pin-to-pin match with identical key specifications.
The main risk when substituting is using a part with a different resistance value, which can alter circuit behavior and performance.

FOJAN
A pin-compatible 0603 resistor with identical resistance, tolerance, power, and TCR ratings.
| Feature / factor | 0603WAF1051T5E | FRC0603F1051TS | ERA3AEB102V | RC0603FR-071K13L | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0603 | 0603 | 0603 (1608 Metric) | 0603 | 0603 / 0603 (1608 Metric) / 0603 (1608 metric) — Identical package ensures form and fit.; ERA3AEB102V: Identical package ensures form and fit.; RC0603FR-071K13L: Identical package ensures form and fit.; WR06X1001FTL: Identical package ensures form and fit. |
| Resistance | 1050.0 Ω | 1050.0 Ω | 1000.0 Ω | 1130.0 Ω | 1050.0 Ω / 1000.0 Ω / 1130.0 Ω — Identical resistance value.; ERA3AEB102V: Resistance is ~4.8% lower than target.; RC0603FR-071K13L: Resistance is ~7.6% higher than target.; WR06X1001FTL: Resistance is ~4.8% lower than target. |
| Tolerance | 1.0 % | 1.0 % | 0.1 % | 1.0 % | 1.0 % / 0.1 % — Identical tolerance.; ERA3AEB102V: Tighter tolerance than target's ±1%.; RC0603FR-071K13L: Identical tolerance.; WR06X1001FTL: Identical tolerance. |
| Power | 0.1 W | 0.1 W | - | - | 0.1 W — Identical power rating. |
| Tcr | ±100 ppm/°C | ±100 ppm/°C | ±25 ppm/°C | ±100 ppm/°C | ±100 ppm/°C / ±25 ppm/°C / Not specified — Identical temperature coefficient.; ERA3AEB102V: Better TCR than target's ±100 ppm/°C.; RC0603FR-071K13L: Identical temperature coefficient.; WR06X1001FTL: TCR is not specified in provided data. |
| Technology | Thick Film | - | Thin Film | - | Thin Film — Different technology may affect noise/pulse performance. |
The best alternative is FRC0603F1051TS from FOJAN, as it matches all key electrical and physical specifications, making it a strong candidate for a direct replacement.