Is there a pin-compatible replacement for PTFR0805B3K30N9?

Yes, several 0805 resistors like Panasonic's ERA6AEB332V are pin-compatible in package. However, key parameters like TCR and power rating may differ, so they are not functionally identical without verification.

What risks should I check before replacing PTFR0805B3K30N9?

The main risks are degraded performance due to weaker Temperature Coefficient of Resistance (TCR) and slightly lower power ratings. Always verify the substitute's datasheet to ensure it meets your circuit's stability and power requirements.

PTFR0805B3K30N9 Alternatives, Datasheet & Cross Reference | C&B RESI

PTFR0805B3K30N9 is a precision 3.3kΩ thin-film resistor in an 0805 package, featuring ±0.1% tolerance and a low ±10ppm/°C TCR. It is ideal for high-stability applications.

AI replacement insight

Electrical riskmedium

Weaker TCR and slightly lower power rating require circuit analysis.

Package risklow

All viable candidates share the same 0805 package.

Can it be replaced directly?

No direct, fully equivalent replacement was found. All suitable candidates have a weaker TCR (±25ppm/°C vs ±10ppm/°C) and require engineering review.

Best replacement path

Parametric alternatives with slightly weaker TCR, such as those from Viking Tech or Panasonic.

Main risk

Performance degradation in precision circuits due to higher temperature drift (weaker TCR).

Recommended alternatives

A parametric alternative with the same package and resistance, but has a weaker TCR and slightly lower power rating.

View details

Alternative comparison matrix

Feature / factor	PTFR0805B3K30N9	ARG05BTC3301	RT0805BRD073K3L	ERA6AEB332V	Compatibility / risk
Package	0805	0805	0805	0805	0805 — Same package and pin count.; RT0805BRD073K3L: Same package and pin count.; ERA6AEB332V: Same package and pin count.
Resistance	3.3kΩ	3.3kΩ	3.3kΩ	3.3kΩ	3.3kΩ — Resistance matches.; RT0805BRD073K3L: Resistance matches.; ERA6AEB332V: Resistance matches.
Tolerance	±0.1%	±0.1%	±0.1%	±0.1%	±0.1% — Precision tolerance matches.; RT0805BRD073K3L: Precision tolerance matches.; ERA6AEB332V: Precision tolerance matches.
Tcr	±10ppm/℃	±25ppm/°C	25 ppm/°C	±25 ppm/°C	±25ppm/°C / 25 ppm/°C / ±25 ppm/°C — Weaker TCR, may affect stability.; RT0805BRD073K3L: Weaker TCR, may affect stability.; ERA6AEB332V: Weaker TCR, may affect stability.
Power	0.13W	0.125W	0.125W	-	0.125W — Slightly lower power rating.; RT0805BRD073K3L: Slightly lower power rating (1/8W).
Application	AEC-Q200	-	-	AEC-Q200	AEC-Q200 — Both are automotive grade.

Application & sourcing insights

Questions & answers

Finding a direct drop-in is challenging due to its high precision. Alternatives like Viking Tech's ARG05BTC3301 offer the same resistance and tolerance but have a weaker TCR (±25ppm/°C), requiring engineering review.