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Best Alternatives to NUP2105

Package: SOT-23SHIKUESTVS - DiodesNumber of Lines: 2Reverse Working Voltage (VRWM): 24 VBreakdown Voltage (VBR): 26.2 V - 32 VPeak Pulse Power: 350 WCapacitance: 30 pF

NUP2105 is a 24V dual-line TVS diode in a SOT-23 package for CAN bus protection. When searching for a replacement, prioritize matching the 24V working voltage, bi-directional configuration, and 350W power rating.

AI replacement insight

Electrical riskmedium

Clamping voltage and power ratings vary between candidates and must be carefully evaluated.

Package risklow

All viable candidates use the standard SOT-23 package, but pinout must be confirmed.

Firmware risklow

Not applicable as this is a passive protection device.

Can it be replaced directly?

Direct replacement for NUP2105 should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

SM24CANB-02HTG offers an upgrade in power rating (500W vs 350W) and is a strong functional match, making it the most promising replacement path.

Main risk

The primary risk when substituting is a mismatch in clamping voltage, which could lead to inadequate protection for the CAN transceiver.

Recommended alternatives

3
SM24CANB-02HTG package
SM24CANB-02HTG

TECH PUBLIC

Needs validationlow risk

A potential upgrade with a higher power rating in the same SOT-23 package. Review clamping voltage.

View details

Alternative comparison matrix

Feature / factorNUP2105SM24CANB-02HTGPESD2IVN24-TR-ESTPNUP2105LT1GCompatibility / risk
PackageSOT-23SOT-23SOT-23SOT-23SOT-23 — Form factor matches.; PESD2IVN24-TR-ES: Form factor matches.; TPNUP2105LT1G: Form factor matches.
Voltage24V24V24V24V24V — Working voltage matches.; PESD2IVN24-TR-ES: Working voltage matches.; TPNUP2105LT1G: Working voltage matches.
Power350W500W600W300W500W / 600W / 300W — Higher power rating provides more robust protection.; PESD2IVN24-TR-ES: Significantly higher power rating.; TPNUP2105LT1G: Lower power rating reduces surge survivability.
PolarityBi-directional (implied)Bi-directional--Bi-directional — Configuration matches for CAN bus protection.
Clamping Voltage40V-44V40V-50V50V43V40V-50V / 43V — Clamping voltage range is wider; verify against system limits.; PESD2IVN24-TR-ES: Higher max clamping voltage offers less protection.; TPNUP2105LT1G: Clamping voltage is within the target range.

Application & sourcing insights

Questions & answers

Verified drop-in options for NUP2105 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.