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Best Alternatives to ULC0544P10

Package: DFN2510-10LeiditechTransient Voltage Suppressors (TVS)Reverse Working Voltage (Vrwm): 5VBreakdown Voltage (Vbr): 6V - 9.5VClamping Voltage (Vc): 9V - 16VJunction Capacitance (Cj): 0.3pFPeak Pulse Current (Ipp): 4A (8/20µs)

ULC0544P10 is a 4-line, 5V low-capacitance TVS diode array in a DFN2510-10 package for protecting high-speed interfaces. Several form, fit, and functional alternatives are available from various manufacturers.

AI replacement insight

Electrical riskmedium

Ensure peak pulse current (Ipp) is >= 4A. Some candidates have lower ratings.

Package risklow

DFN2510-10 is a standard package, but pinout must be verified from the datasheet.

Can it be replaced directly?

Direct replacement for ULC0544P10 should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

TPD4E05U06DQAR offers a direct upgrade path with a higher surge current rating (5A vs 4A).

Main risk

The primary risk is ensuring the replacement's peak pulse current (Ipp) meets or exceeds the original's 4A rating and that the DFN2510-10 pinout is identical.

Recommended alternatives

4
TPD4E05U06DQAR package
TPD4E05U06DQAR

Leiditech

Needs validationlow risk

An upgrade with a higher 5A surge current rating in the same package, offering enhanced protection.

View details

Alternative comparison matrix

Feature / factorULC0544P10TPD4E05U06DQARRCLAMP0524PATCTESD5304DCompatibility / risk
PackageDFN2510-10DFN2510-10DFN2510-10DFN2510-10DFN2510-10 — Package matches.; RCLAMP0524PATCT: Package matches, increasing likelihood of pin compatibility.; ESD5304D: Package matches.; ESD7104MUTAG: Package matches.
Voltage5.0V5.0V5.0V5.0V5.0V — Reverse working voltage matches.; RCLAMP0524PATCT: Reverse working voltage matches.; ESD5304D: Reverse working voltage matches.; ESD7104MUTAG: Reverse working voltage matches.
Current4.0A5.0A4.0A4.0A5.0A / 4.0A / 3.0A — Higher peak pulse current provides more protection.; RCLAMP0524PATCT: Peak pulse current matches.; ESD5304D: Peak pulse current matches.; ESD7104MUTAG: Lower peak pulse current is a downgrade and a risk.
Capacitance0.3pF0.3pF0.3pF0.3pF0.3pF / 0.2pF — Low capacitance matches, suitable for high-speed lines.; RCLAMP0524PATCT: Low capacitance matches, suitable for high-speed lines.; ESD5304D: Low capacitance matches.; ESD7104MUTAG: Lower capacitance is an improvement for signal integrity.
ManufacturerLeiditech-Multiple-Multiple — Part is widely second-sourced (Semtech, Fuxinsemi, etc.).

Application & sourcing insights

Questions & answers

Verified drop-in options for ULC0544P10 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.