
SART
A 3.0A fuse in the same S1206-SD family, sharing the 1206 package and 63V rating but with a different current.
Find alternatives for the SART S1206-SD-1.0A, a 1A/63V slow-blow fuse in a 1206 package. Review related parts from the same series and understand the risks of using different current ratings.
Using a higher current fuse negates overcurrent protection.
All candidates share the same 1206 package.
No, there are no direct pin-compatible replacements in this list. All candidates have significantly different current ratings.
No direct drop-in replacement was found. The best path is to select another 1A/63V slow-blow fuse in a 1206 package from a different manufacturer.
The primary risk is using a fuse with a higher current rating, which will fail to protect the circuit at the designed 1A threshold.

SART
A 3.0A fuse in the same S1206-SD family, sharing the 1206 package and 63V rating but with a different current.
| Feature / factor | S1206-SD-1.0A | S1206-SD-3.0A | S1206-SD-5.0A | S1206-SD-6.0A | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 1206 | 1206 | 1206 | 1206 | 1206 — Form factor matches.; S1206-SD-5.0A: Form factor matches.; S1206-SD-6.0A: Form factor matches.; S1206-SD-7.0A: Form factor matches. |
| Voltage | 63V | 63V | 63V | 63V | 63V — Voltage rating matches.; S1206-SD-5.0A: Voltage rating matches.; S1206-SD-6.0A: Voltage rating matches.; S1206-SD-7.0A: Voltage rating matches. |
| Current | 1.0A | 3.0A | 5.0A | 6.0A | 3.0A / 5.0A / 6.0A / 7.0A — Significantly higher current rating. Will not protect a 1A circuit.; S1206-SD-5.0A: Significantly higher current rating. Will not protect a 1A circuit.; S1206-SD-6.0A: Significantly higher current rating. Will not protect a 1A circuit.; S1206-SD-7.0A: Significantly higher current rating. Will not protect a 1A circuit. |
| Polarity Or Type | Slow Blow | Slow Blow | Slow Blow | Slow Blow | Slow Blow — Fuse characteristic matches.; S1206-SD-5.0A: Fuse characteristic matches.; S1206-SD-6.0A: Fuse characteristic matches.; S1206-SD-7.0A: Fuse characteristic matches. |
No direct replacement is listed. The best alternative would be another 1A, 63V, slow-blow fuse in a 1206 package. You must verify the time-current curve for your application.