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Best Alternatives to ESD5311X

Package: DFN1006-2LLeiditechTVS DiodesDevice type: Bidirectional ESD/TVS protection diodeReverse stand-off voltage (VRWM): 5.0 VReverse breakdown voltage (VBR): 6.2 V at IT = 1 mAPeak pulse current (IPP): 4.0 A at 8/20 µsClamping voltage (VC): 23 V at IPP = 4 A, 8/20 µs

ESD5311X is an ultra-low capacitance TVS diode in a DFN1006-2 package, designed to protect high-speed data lines. Finding a substitute requires matching its sub-picofarad capacitance to maintain signal integrity.

AI replacement insight

Electrical riskhigh

Capacitance mismatch is the main electrical risk, impacting signal integrity on high-speed lines.

Package risklow

The DFN1006-2 package is common, and several candidates match the form factor.

Can it be replaced directly?

Direct replacement for ESD5311X should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

ESD5311N by FUXINSEMI is a very strong candidate, matching the critical ultra-low capacitance, package, and electrical ratings.

Main risk

The primary risk when substituting ESD5311X is using a part with higher capacitance, which will degrade high-speed signal integrity and cause system failure.

Recommended alternatives

2
ESD5311N package
ESD5311N

FUXINSEMI

Needs validationlow risk

A strong substitute with matching package, voltage, current, and ultra-low capacitance; requires polarity verification.

View details

Alternative comparison matrix

Feature / factorESD5311XESD5311NESD5471XAlt 3Compatibility / risk
PackageDFN1006-2DFN1006-2-DFN1006-2 — Package matches.
PolarityBi-directionalBi-directional (unverified)-Bi-directional (unverified) — Data sources conflict, but likely matches. Verification required.
Voltage5.0V5.0V-5.0V — Reverse working voltage matches.
Current4A4A-7A — Higher peak pulse current provides more robustness.
Capacitance0.3pF~0.3pF-10pF — Capacitance is ~30x higher, likely impacting signal integrity.

Application & sourcing insights

Questions & answers

Verified drop-in options for ESD5311X 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.