ProjectsPricingInsights

Best Alternatives to 2920L185DR

Package: 2920 (7351 Metric), ConcaveLittelfusePTC Resettable FusesSeries: POLY-FUSE®, 2920LPackaging: Tape & Reel (TR) Cut Tape (CT) Digi-Reel®Type: PolymericVoltage - Max: 33VCurrent - Hold (Ih) (Max): 1.85 A

The Littelfuse 2920L185DR is a popular 2920-size PTC resettable fuse with a 1.85A hold current and 33V rating. Several manufacturers offer compatible alternatives, but careful review of hold current, trip current, and resistance is essential for reliable overcurrent protection.

AI replacement insight

Electrical riskmedium

Using a part with a higher hold/trip current will reduce protection against overcurrent events.

Package risklow

The 2920 package is standardized, making physical replacement straightforward.

Can it be replaced directly?

Direct replacement for 2920L185DR should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

Use a candidate with an identical 1.85A hold current, 33V rating, and 2920 package, such as SMD2920P185TF or SMD185L.

Main risk

The main risk is selecting a part with a different hold or trip current, which would alter the circuit's overcurrent protection characteristics.

Recommended alternatives

3
SMD185L package
SMD185L

TECHFUSE

Needs validationlow risk

Strong alternative with matching package, voltage, and hold current, plus a higher fault current rating.

View details

Alternative comparison matrix

Feature / factor2920L185DRSMD185LSMD2920P185TFSMD2920-200C-33VCompatibility / risk
Package29202920292029202920 — Form factor matches.; SMD2920P185TF: Form factor matches.; SMD2920-200C-33V: Form factor matches.
Voltage33.0V33.0V33.0V33.0V33.0V — Maximum voltage rating matches.; SMD2920P185TF: Maximum voltage rating matches.; SMD2920-200C-33V: Maximum voltage rating matches.
Current40A100A3.7A4.0A100A / 3.7A / 4.0A — Max fault current is higher.; SMD2920P185TF: Trip current (Itrip) matches.; SMD2920-200C-33V: Trip current is slightly higher.
Power1.5W-1.5W-1.5W — Typical power dissipation matches.

Application & sourcing insights

Questions & answers

Verified drop-in options for 2920L185DR 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.