Is there a pin-compatible replacement for PNLS6045-220M 22UH?

Several parts like Sunltech's SLW6045S220MST share the same 6045 package and pinout, but have a lower saturation current (2.05A vs 3.0A). This makes them a high-risk downgrade that requires careful testing.

What risks should I check before replacing PNLS6045-220M 22UH?

Key risks include: 1) Package mismatch requiring PCB changes. 2) Lower saturation current causing inductor saturation and circuit failure. 3) Different inductance value affecting the power supply's stability, efficiency, and ripple.

PNLS6045-220M 22UH Alternatives, Datasheet & Cross Reference | DMBJ

Finding a substitute for the PNLS6045-220M 22UH power inductor requires matching its 22µH inductance, 3A saturation current, and 6045 package. Alternatives may have trade-offs in current rating or package size.

AI replacement insight

Electrical riskhigh

Using a part with lower saturation current can cause circuit failure.

Package riskmedium

Some functional alternatives have different footprints requiring a PCB redesign.

Can it be replaced directly?

No direct, drop-in replacement has been verified. Several candidates share the package but differ in key electricals like current handling, requiring review.

Best replacement path

Find a part in a 6045 package with 22µH inductance and saturation current ≥ 3.0A. Candidates with lower current or different inductance require validation.

Main risk

The main risk is performance degradation from using an inductor with a lower saturation current, which can lead to circuit instability or failure.

Recommended alternatives

Same package and inductance, but lower saturation current (2.05A vs 3.0A) poses a significant performance risk.

View details

Alternative comparison matrix

Feature / factor	PNLS6045-220M 22UH	SLW6045S220MST	PNLS6045-180M 18UH	SMDRH104R-220MT	Compatibility / risk
Package	6045	6045	6045	10.3x10.3x4.0mm	6045 / 10.3x10.3x4.0mm — Package size matches.; PNLS6045-180M 18UH: Package size matches.; SMDRH104R-220MT: Package is much larger, requires PCB redesign.
Inductance	22µH	22µH	18µH	22µH	22µH / 18µH — Inductance value matches.; PNLS6045-180M 18UH: Inductance is ~18% lower.; SMDRH104R-220MT: Inductance value matches.
Saturation Current	3.0A	2.05A	-	3.6A	2.05A / 3.6A — Significantly lower saturation current.; SMDRH104R-220MT: Higher saturation current provides more margin.
Dcr	0.125Ω	0.089Ω	0.100Ω	0.073Ω	0.089Ω / 0.100Ω / 0.073Ω — Lower DCR improves efficiency.; PNLS6045-180M 18UH: Lower DCR improves efficiency.; SMDRH104R-220MT: Lower DCR improves efficiency.
Current	3.0A	-	3.1A	-	3.1A — Current rating is comparable.

Application & sourcing insights

Questions & answers

The best alternative depends on design flexibility. For the same footprint, PNLS6045-180M offers similar performance but with lower inductance (18µH). If a PCB redesign is possible, SMDRH104R-220MT offers superior electrical performance in a larger package.