Is there a pin-compatible replacement for 046801.5NRHF?

Yes, parts like Littelfuse's 046802.5NRHF share the same 1206 package and are pin-compatible. However, its 2.5A current rating is higher than the original 1.5A, making it functionally different and unsafe without review.

What risks should I check before replacing 046801.5NRHF?

The main risk is an incorrect current rating, which could fail to protect the circuit from overcurrent damage. Also, verify the fuse type (slow-blow vs. fast-acting) as a mismatch can cause nuisance tripping or failure to protect.

046801.5NRHF Alternatives, Datasheet & Cross Reference | Littelfuse

Reviewing alternatives for the Littelfuse 046801.5NRHF, a 1.5A 63V slow-blow 1206 fuse. Key considerations for replacements are matching the time-delay characteristic and current rating to ensure proper circuit protection.

AI replacement insight

Electrical riskhigh

Mismatched current or fuse type can lead to circuit damage or fire hazard.

Package risklow

The 1206 package is standardized, making physical replacement straightforward.

Firmware risklow

Fuses are passive components and do not interact with firmware.

Can it be replaced directly?

No direct, 1-to-1 replacement has been identified. All candidates require parametric adjustments and engineering validation.

Best replacement path

Use a parametric search to find a 1.5A, 63V (or higher), slow-blow fuse in a 1206 package from other manufacturers.

Main risk

Using a fuse with a higher current rating will compromise circuit safety by not blowing under expected fault conditions.

Recommended alternatives

Same series 1206 fuse, but with a higher 2.5A current rating that poses a high electrical risk without redesign.

View details

Alternative comparison matrix

Feature / factor	046801.5NRHF	046802.5NRHF	12T.30000063AG12S1B02	Compatibility / risk
Package	1206	1206	1206	1206 — Same package size ensures physical compatibility.; 12T.30000063AG12S1B02: Same package size ensures physical compatibility.
Voltage	63V	63V	63V	63V — Voltage rating is identical.; 12T.30000063AG12S1B02: Voltage rating is identical.
Current	1.5A	2.5A	3.0A	2.5A / 3.0A — Higher current rating will not protect the circuit at the original level.; 12T.30000063AG12S1B02: Higher current rating will not protect the circuit at the original level.
Polarity Or Type	Slo-Blo® (Time Delay)	Slo-Blo® (Time-Lag)	Slow Blow	Slo-Blo® (Time-Lag) / Slow Blow — Same manufacturer series and time-current characteristic.; 12T.30000063AG12S1B02: Time-current characteristic is comparable (Slow-Blow).
Temperature	-55°C to 90°C	-55°C to 90°C	-55°C to 125°C	-55°C to 90°C / -55°C to 125°C — Operating temperature range is identical.; 12T.30000063AG12S1B02: Wider operating temperature range.

Application & sourcing insights

Questions & answers

No direct drop-in replacement was found. Alternatives exist in the same 1206 package, but they have different current ratings (e.g., 2.5A or 3.0A) which requires careful engineering review to ensure circuit safety.