2920L185DR
Littelfuse
Needs validationlow risk
Strong pin-compatible alternative from Littelfuse with identical key ratings (1.85A, 33V) in a 2920 package.
Best Alternatives to SMD2920P185TF
Find and compare alternatives for the RUILON SMD2920P185TF, a 1.85A/33V PTC resettable fuse in a 2920 package. Top candidates include pin-compatible parts from Littelfuse and TECHFUSE.
AI replacement insight
Package risklow
All top candidates use the same 2920 package.
Electrical riskmedium
Some alternatives have a higher hold current, which alters the protection threshold. Even for matched parts, trip time can vary.
Sourcing risklow
Multiple manufacturers offer parts with similar specifications, improving availability.
Can it be replaced directly?
Direct replacement for SMD2920P185TF should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
Start with Datasheet verified or Strong match candidates for SMD2920P185TF, then review parametric alternatives for package and electrical fit.
Main risk
Slight variations in trip time and post-trip resistance between manufacturers can affect system behavior under fault conditions.
Recommended alternatives
5Alternative comparison matrix
| Feature / factor | SMD2920P185TF | 2920L185DR | SMD185L | BSMD2920-200-36V | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 2920 | 2920 | 2920 | 2920 | 2920 — Identical package ensures form and fit.; SMD185L: Identical package ensures form and fit.; BSMD2920-200-36V: Identical package ensures form and fit.; BSMD2920-200-48V: Identical package ensures form and fit. |
| Voltage | 33.0 V | 33.0 V | 33.0 V | 36.0 V | 33.0 V / 36.0 V / 48.0 V — Maximum voltage rating is identical.; SMD185L: Maximum voltage rating is identical.; BSMD2920-200-36V: Higher voltage rating provides more margin.; BSMD2920-200-48V: Higher voltage rating provides more margin. |
| Current | 1.85 A | 1.85 A | 1.85 A | 2.0 A | 1.85 A / 2.0 A — Hold current (Ih) is identical.; SMD185L: Hold current (Ih) is identical.; BSMD2920-200-36V: Higher hold current may alter the protection point.; BSMD2920-200-48V: Higher hold current may alter the protection point. |
| Trip Current | 3.7 A | 3.7 A | 3.7 A | - | 3.7 A — Trip current (It) is identical.; SMD185L: Trip current (It) is identical. |
| Resistance | 0.03-0.15 Ω | 0.05-0.15 Ω | - | - | 0.05-0.15 Ω — Resistance range is very similar. |
| Max Fault Current | 40 A | - | 100 A | - | 100 A — Higher max fault current rating offers more robustness. |
| Power | 1.5 W | - | - | 2.0 W | 2.0 W — Higher power dissipation rating.; BSMD2920-200-48V: Higher power dissipation rating. |
Application & sourcing insights
Questions & answers
Verified drop-in options for SMD2920P185TF 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.