Is there a pin-compatible replacement for SF-1206F500-2?

Yes, several candidates like 0440005.WR and 0437007.WR are in the same 1206 package and are pin-compatible. However, they have critical electrical differences and are not drop-in replacements.

What risks should I check before replacing SF-1206F500-2?

Before replacing, you must verify two critical parameters: the fuse type (Fast-Acting vs. Slow-Blow) and the current rating. Using a part with the wrong characteristic can fail to protect your circuit.

SF-1206F500-2 Alternatives, Datasheet & Cross Reference | BOURNS

Finding a substitute for the Bourns SF-1206F500-2, a 5A 24V Fast-Acting fuse, requires careful checking of both the current rating and fuse blowing characteristics. While pin-compatible options exist, no direct drop-in replacements were found.

AI replacement insight

Electrical riskhigh

Mismatch in fuse type or current rating can lead to circuit damage.

Package risklow

All candidates share the same 1206 surface-mount package.

Can it be replaced directly?

There are no direct, fully-compatible replacements for SF-1206F500-2 in this list. All potential alternatives have critical differences in either fuse type or current rating that require engineering review.

Best replacement path

No direct drop-in replacement was found. Review candidates 0440005.WR (matches current, wrong type) and 0437007.WR (matches type, wrong current) against specific circuit requirements.

Main risk

The primary risk is incorrect circuit protection, either by using a slow-blow fuse instead of fast-acting, or by using a fuse with a higher current rating.

Recommended alternatives

Matches package and fuse type, but has a higher 7A current rating versus the target's 5A.

View details

Alternative comparison matrix

Feature / factor	SF-1206F500-2	0437007.WR	0440005.WR	Compatibility / risk
Package	1206 (3216 Metric)	1206	1206	1206 — Form and fit match.; 0440005.WR: Form and fit match.
Fuse Type	Fast Acting	Fast-Acting	Slow-Blow (inferred)	Fast-Acting / Slow-Blow (inferred) — Fuse type matches.; 0440005.WR: Target is Fast-Acting. This is a critical functional difference.
Current	5.0A	7.0A	5.0A	7.0A / 5.0A — Higher current rating may not provide adequate protection.; 0440005.WR: Current rating matches.
Voltage	24V	32V	32V	32V — Higher voltage rating is acceptable.; 0440005.WR: Higher voltage rating is acceptable.
Temperature	-40°C to +105°C	-	-55°C to +150°C	-55°C to +150°C — Wider operating range.

Application & sourcing insights

Questions & answers

No direct drop-in replacement was identified. The closest options require review: 0440005.WR has the right current but is a Slow-Blow type, while 0437007.WR is Fast-Acting but has a higher 7A rating.