
BNstar
A potential alternative with the same package and voltage, but a higher hold current (0.5A) that requires engineering review.
JK-nSMD035-24V is a 24V, 350mA PTC resettable fuse in a 1206 package. Finding a replacement requires matching the hold current and trip characteristics, as these are critical for circuit protection.
Hold current mismatch significantly alters protection characteristics.
All candidates share the same 1206 package.
No direct, drop-in replacement with identical key parameters was identified. All candidates have a higher hold current, which changes the circuit's protection level.
Use a parametric search for a 1206 PTC fuse with Ih near 0.35A and Vmax ≥ 24V. BNstar's SMD1206-050C-30V is a potential starting point for evaluation.
The main risk is insufficient overcurrent protection due to candidates having a higher hold current than the original part.

BNstar
A potential alternative with the same package and voltage, but a higher hold current (0.5A) that requires engineering review.
| Feature / factor | JK-nSMD035-24V | SMD1206-050C-24V | SMD1206-050C-30V | SMD1206-075C-30V | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 1206 | 1206 | 1206 | 1206 | 1206 — Form and fit are identical.; SMD1206-050C-30V: Form and fit are identical.; SMD1206-075C-30V: Form and fit are identical.; SMD1206-100C-24V: Form and fit are identical. |
| Voltage | 24V | 24V | 30V | 30V | 24V / 30V — Maximum voltage rating is the same.; SMD1206-050C-30V: Higher voltage rating provides more margin.; SMD1206-075C-30V: Higher voltage rating provides more margin.; SMD1206-100C-24V: Maximum voltage rating is the same. |
| Current | 0.35A | 0.5A | 0.5A | 0.75A | 0.5A / 0.75A / 1.0A — Higher hold current may be acceptable in some designs.; SMD1206-050C-30V: Higher hold current may be acceptable in some designs.; SMD1206-075C-30V: Hold current is more than double the target.; SMD1206-100C-24V: Significantly higher hold current reduces protection. |
| Resistance | 1.3Ω | - | - | - | 0.30Ω — Max post-trip resistance differs. |
Candidates like BNstar's SMD1206-050C-30V offer a similar package and higher voltage rating, but have a higher hold current (0.5A vs 0.35A). All alternatives require careful review of your circuit's protection needs.