Is there a pin-compatible replacement for SM7850-680MT?

No pin-compatible replacements have been identified in our catalog. All functional alternatives require a different PCB land pattern due to package size differences. Always verify the datasheet for exact dimensions and pad layout.

What risks should I check before replacing SM7850-680MT?

Key risks include: 1) Package Mismatch: All candidates have different footprints, requiring a PCB redesign. 2) Shielding: The target is unshielded; most alternatives are shielded, which changes EMI characteristics. 3) DCR: Some options have higher DC resistance, impacting efficiency and heat.

SM7850-680MT Alternatives, Datasheet & Cross Reference | SXN

The SM7850-680MT is a 68µH unshielded power inductor from SXN in a 7.8x7.0mm package. Finding a replacement requires careful attention to package size, current ratings, and shielding, as no direct drop-in alternatives are available.

AI replacement insight

Package riskhigh

No candidates match the 7.8x7.0mm package, requiring a mandatory board redesign.

Electrical riskmedium

Candidates have different shielding (shielded vs unshielded) and DCR values that must be evaluated for the application.

Sourcing risklow

Functional alternatives are available from multiple manufacturers.

Can it be replaced directly?

No direct drop-in replacement found. All candidates require board layout changes and have different shielding characteristics.

Best replacement path

Functional alternate with board redesign.

Main risk

Package mismatch is the primary risk, requiring a mandatory PCB redesign for any alternative.

Recommended alternatives

A functional alternative with higher current and lower DCR, but in a different, shielded package.

View details

Alternative comparison matrix

Feature / factor	SM7850-680MT	SMNR8040-680MT	SMDRH104R-680MT	PNLS6045-680M 68UH	Compatibility / risk
Inductance	68µH	68µH	68µH	68µH	68µH — Inductance matches.; SMDRH104R-680MT: Inductance matches.; PNLS6045-680M 68UH: Inductance matches.
Current	1.12A	1.45A	2.08A	1.6A	1.45A / 2.08A / 1.6A — Higher saturation current is an upgrade.; SMDRH104R-680MT: Significantly higher saturation current.; PNLS6045-680M 68UH: Higher saturation current is an upgrade.
Dcr	0.208Ω	0.196Ω	0.213Ω	0.33Ω	0.196Ω / 0.213Ω / 0.33Ω — Lower DCR improves efficiency.; SMDRH104R-680MT: Slightly higher DCR may reduce efficiency.; PNLS6045-680M 68UH: Significantly higher DCR will reduce efficiency.
Package	7.8x7.0mm	8.0x8.0mm	10.3x10.3mm	6.0x6.0mm	8.0x8.0mm / 10.3x10.3mm / 6.0x6.0mm — Different footprint requires PCB redesign.; SMDRH104R-680MT: Larger footprint requires PCB redesign.; PNLS6045-680M 68UH: Smaller footprint requires PCB redesign.
Shielding	Unshielded	Shielded	Shielded	-	Shielded — Shielding affects EMI performance.; SMDRH104R-680MT: Shielding affects EMI performance.
Vendor	SXN	-	-	DMBJ	DMBJ — Cross-vendor alternative.

Application & sourcing insights

Questions & answers

There are no direct drop-in replacements. Alternatives like SMNR8040-680MT offer higher current handling but come in a different package (8.0x8.0mm) and are shielded, which may affect EMI performance. A board layout change is required.