Is there a pin-compatible replacement for SMD1206P100TF?

Yes, several 1206 package PTC fuses like TECHFUSE nSMD100-16V are pin-compatible. As they are 2-terminal devices, matching the 1206 footprint ensures pin compatibility.

What risks should I check before replacing SMD1206P100TF?

Key risks include differences in trip time, resistance characteristics (initial and post-trip), and power dissipation. Always review the candidate's datasheet to ensure its time-current curve meets your circuit's protection requirements.

SMD1206P100TF Alternatives, Datasheet & Cross Reference | RUILON

SMD1206P100TF is a 1206 PTC resettable fuse rated for 1.0A hold current and 6V. This page provides analysis of potential alternatives, focusing on electrical and mechanical compatibility for a safe replacement.

AI replacement insight

Electrical risklow

Key parameters match or are improved. Secondary parameters like trip time need verification.

Package risklow

All strong candidates share the same 1206 package.

Sourcing riskmedium

Availability and lead time of alternative manufacturers should be confirmed.

Can it be replaced directly?

TECHFUSE nSMD100-16V is a strong candidate for replacement, matching the critical 1.0A hold current, 1.8A trip current, and 1206 package, while providing a higher voltage rating.

Best replacement path

Upgrade to a higher voltage part like TECHFUSE nSMD100-16V for increased design margin and robustness.

Main risk

The primary risk is a mismatch in the time-to-trip characteristic, which could alter the circuit's protection behavior under fault conditions.

Recommended alternatives

A 1206 PTC fuse with matching 1.0A hold current and a higher 16V voltage rating, offering a potential upgrade path.

View details

Alternative comparison matrix

Feature / factor	SMD1206P100TF	nSMD100-16V	nSMD100-24V	JK-nSMD100-16	Compatibility / risk
Package	1206	1206	1206	1206	1206 — Same package ensures form and fit.; nSMD100-24V: Same package ensures form and fit.; JK-nSMD100-16: Same package ensures form and fit.
Current	1.8A	1.8A	1.8A	1.0A	1.8A / 1.0A — Trip current matches target.; nSMD100-24V: Trip current matches target.; JK-nSMD100-16: Hold current matches target.
Voltage	6.0V	16.0V	24.0V	16.0V	16.0V / 24.0V — Higher voltage rating provides increased design margin.; nSMD100-24V: Higher voltage rating provides increased design margin.; JK-nSMD100-16: Higher voltage rating provides increased design margin.
Resistance	0.05Ω / 0.27Ω	-	0.055Ω / 0.27Ω	0.33Ω	0.055Ω / 0.27Ω / 0.33Ω — Initial and post-trip resistance values are nearly identical.; JK-nSMD100-16: Max post-trip resistance is slightly higher, may affect reset time.

Application & sourcing insights

Questions & answers

TECHFUSE nSMD100-16V and nSMD100-24V are strong candidates, offering the same 1.0A hold current in a 1206 package but with higher 16V/24V voltage ratings, making them robust upgrades.