What risks should I check before replacing YHNR4020-100M?

Before replacing YHNR4020-100M, you must check three critical factors: 1) Package dimensions and PCB footprint compatibility. 2) The heat rating current (Irms) of the replacement must be equal to or greater than the target's 2.0A. 3) The saturation current (Isat) must be equal to or greater than the target's 2.8A to avoid inductance drop under load.

YHNR4020-100M Alternatives, Datasheet & Cross Reference | YJYCOIN

Finding a substitute for the YHNR4020-100M, a 10µH power inductor in a 4x4mm package, requires balancing physical fit with electrical performance. While some parts match the package, they may have lower current ratings, and electrically superior parts often come in different sizes.

AI replacement insight

Package riskhigh

Most alternatives have different package sizes, requiring a board redesign.

Electrical riskhigh

The only form-fit candidate is a significant downgrade in current handling capability.

Can it be replaced directly?

Direct replacement for YHNR4020-100M should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

XR0520-100M is a strong functional alternative if a PCB layout change for a 5x5mm package is feasible. For a drop-in solution, ANR4020T100M fits the footprint but is a significant electrical downgrade and carries high risk.

Main risk

The primary risk is either mechanical incompatibility due to different package sizes or electrical overstress from using a downgrade with lower current ratings.

Recommended alternatives

Strong electrical alternative with better current ratings and DCR, but requires a board layout change for its larger 5x5mm package.

View details

Alternative comparison matrix

Feature / factor	YHNR4020-100M	XR0520-100M	ANR4020T100M	Compatibility / risk
Package	4020 (4x4mm)	0520 (5x5mm)	4020 (1616 Metric)	0520 (5x5mm) / 4020 (1616 Metric) — Package is larger and not a drop-in fit.; ANR4020T100M: Same package dimensions (4x4mm).
Current	2.0 A	2.5 A	0.91 A	2.5 A / 0.91 A — Heat rating current is higher.; ANR4020T100M: Heat rating current is significantly lower.
Saturation Current A	2.8 A	3.0 A	1.62 A	3.0 A / 1.62 A — Saturation current is slightly higher.; ANR4020T100M: Saturation current is significantly lower.
Dcr Ohm	0.19 Ω	0.175 Ω	0.213 Ω	0.175 Ω / 0.213 Ω — Lower DCR improves efficiency.; ANR4020T100M: Higher DCR may increase power loss.

Application & sourcing insights

Questions & answers

Verified drop-in options for YHNR4020-100M are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.