Is there a pin-compatible replacement for PTFR0805B33K0N9?

No direct pin-to-pin replacement has been verified. While several candidates share the 0805 package, they have parametric differences in resistance, TCR, or power rating. Engineering review is required for any substitution.

What risks should I check before replacing PTFR0805B33K0N9?

When replacing PTFR0805B33K0N9, key risks include changes in resistance value, a wider tolerance (e.g., >0.1%), a higher Temperature Coefficient of Resistance (TCR > 10ppm/℃), and lower power handling capability. Always verify these in your design.

PTFR0805B33K0N9 Alternatives, Datasheet & Cross Reference | C&B RESI

RESI PTFR0805B33K0N9 is a precision thin-film chip resistor in a standard 0805 package, featuring 33kΩ resistance, a tight ±0.1% tolerance, and a low ±10ppm/℃ TCR, making it ideal for precision circuits.

AI replacement insight

Electrical riskmedium

Key precision parameters like TCR, tolerance, and resistance may differ, impacting circuit performance.

Can it be replaced directly?

No direct, drop-in replacement was found. All candidates require a review of parametric trade-offs.

Best replacement path

Use a part from the same series with a different resistance like PTFR0805B30K0N9, or a part with matching resistance but weaker TCR like RT0805BRD0733KL.

Main risk

The main risk is compromising circuit precision due to differences in TCR, tolerance, or resistance value.

Recommended alternatives

Excellent match on all specs except for resistance value (30kΩ vs 33kΩ).

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Matches resistance and package, but has a weaker TCR and slightly lower power rating.

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Parametric alternative with different resistance, weaker TCR, and lower power.

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Parametric alternative with different resistance, weaker TCR, and lower power.

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Shares package and resistance, but is a major downgrade in tolerance, TCR, and technology.

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Alternative comparison matrix

Feature / factor	PTFR0805B33K0N9	PTFR0805B30K0N9	RT0805BRD0733KL	AR05BTCW3002	Compatibility / risk
Package	0805	0805	0805	0805	0805 — Same package and pin count.; RT0805BRD0733KL: Same package and pin count.; AR05BTCW3002: Same package and pin count.; AR05BTCW3502: Same package and pin count.
Resistance	33kΩ	30kΩ	33kΩ	30kΩ	30kΩ / 33kΩ / 35kΩ — Resistance is ~9% lower than target.; RT0805BRD0733KL: Resistance value matches.; AR05BTCW3002: Resistance is ~9% lower than target.; AR05BTCW3502: Resistance is ~6% higher than target.
Tolerance	±0.1%	±0.1%	±0.1%	-	±0.1% — Precision tolerance matches.; RT0805BRD0733KL: Precision tolerance matches.
Tcr	±10ppm/℃	±10ppm/℃	25 ppm/°C	±25ppm/°C	±10ppm/℃ / 25 ppm/°C / ±25ppm/°C — TCR matches.; RT0805BRD0733KL: Candidate TCR is higher, indicating less stability over temperature.; AR05BTCW3002: Candidate TCR is higher, indicating less stability.; AR05BTCW3502: Candidate TCR is higher, indicating less stability.
Power	0.13W	0.13W	0.125W	0.125W	0.13W / 0.125W — Power rating matches.; RT0805BRD0733KL: Slightly lower power rating, check application's power dissipation.; AR05BTCW3002: Slightly lower power rating.; AR05BTCW3502: Slightly lower power rating.

Application & sourcing insights

Questions & answers

The best alternative depends on application flexibility. `PTFR0805B30K0N9` from the same series is a strong choice if a 30kΩ resistance is acceptable. If 33kΩ is required, `RT0805BRD0733KL` is an option, but its temperature coefficient (TCR) is higher and requires verification.