Is there a pin-compatible replacement for STS2300?

Yes, other fuses in the REOMAX STS series, like STS2250 and STS2200, are pin-compatible in the same 6125 (2410) package. However, they have different current ratings and require engineering validation.

What risks should I check before replacing STS2300?

The primary risk is a mismatch in the current rating. Using a fuse with a lower rating (e.g., 25A) may cause nuisance tripping. Always verify the replacement's voltage, current, and time-current characteristics match your application's needs.

STS2300 Alternatives, Datasheet & Cross Reference | Dongguan Reomax Electronics Co., Ltd.

The REOMAX STS2300 is a 30A, 72VDC slow-blow surface mount fuse in a 6125 (2410) package. While direct replacements exist, alternatives within the same STS family offer different current ratings that may be suitable after engineering review.

AI replacement insight

Electrical riskmedium

Alternatives have different current ratings requiring engineering validation.

Package risklow

Alternatives share the same 6125 package, ensuring mechanical compatibility.

Firmware risklow

Not applicable for a passive component like a fuse.

Can it be replaced directly?

There is no direct, 1-to-1 replacement with identical key parameters among the candidates reviewed. The original STS2300 should be sourced for a guaranteed match.

Best replacement path

Source the original STS2300 for a direct drop-in. If unavailable, evaluate the STS2250 (25A) as a parametric alternative, verifying it meets your circuit's current budget.

Main risk

The main risk is using a substitute with an incorrect current rating, which can lead to either nuisance tripping (if too low) or failure to protect the circuit (if too high).

Recommended alternatives

A parametric alternative in the same package and voltage, but with a lower 25A current rating.

View details

Alternative comparison matrix

Feature / factor	STS2300	STS2250	STS2200	Compatibility / risk
Package	6125 (2410)	6125 (2410)	6125 (2410)	6125 (2410) — Same package and pin count.; STS2200: Same package and pin count.
Voltage	72.0V	72.0V	72VDC	72.0V / 72VDC — Voltage rating is identical.; STS2200: Voltage rating is identical.
Current	30.0A	25.0A	20A	25.0A / 20A — Lower current rating, may trip earlier.; STS2200: Significantly lower current rating.
Polarity Or Type	Slow-Blow (Time-Lag)	Time-Lag (Slow-Blow)	Time-Lag (Slow-Blow)	Time-Lag (Slow-Blow) — Fuse type is identical.; STS2200: Fuse type is identical.

Application & sourcing insights

Questions & answers

The best alternative depends on your circuit's current requirements. The STS2250 offers the same package and voltage with a slightly lower 25A rating. For the exact 30A rating, sourcing the original STS2300 is recommended.