Skip to main content
Log in
KYOCERA AVX F1206A0R25FSTR — Circuit Protection

F1206A0R25FSTR KYOCERA AVX Accu-Guard® 250 mA Fast Blow Fuse

MPNF1206A0R25FSTR
Active

KYOCERA AVX Accu-Guard® series, F1206A0R25FSTR, 250 mA fast blow surface mount fuse, 1206 (3216 metric) package, 32 V DC rating, cUL/UL approved.

KYOCERA AVX F1206A0R25FSTR datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

F1206A0R25FSTR specifications
ParameterValue
SeriesAccu-Guard®
Fuse typeBoard Mount (Cartridge Style Excluded)
MountingSurface Mount
Voltage rating - DC32 V
Breaking capacity @ rated voltage50A
Current rating250 mA
Response timeFast Blow
Operating temperature-55°C~125°C
Size (Dimension)0.122\" L x 0.063\" W x 0.047\" H (3.10mm x 1.60mm x 1.20mm)
Approval agencycUL, UL
PackageTape & Reel (TR)
Melting i2t4E-05
Case1206 (3216 Metric)
DC cold resistance0.75 Ohms

Product details

Accu-Guard® 250 mA fast blow fuse in 1206

It is rated for 32 V DC and carries cUL and UL approvals.

Breaking capacity and cold resistance

Breaking capacity at rated voltage is 50 A, which means the fuse can safely interrupt a fault current up to that level without arcing or damage to the board. DC cold resistance is 0.75 Ohms, a value that affects the voltage drop across the fuse at rated current — at 250 mA the drop is under 0.2 V, negligible for most 3.3 V and 5 V rails.

Melting I²t and operating temperature

Melting I²t is 4E-05 A²s, a low value consistent with a fast blow fuse that opens quickly on overcurrent — important for protecting sensitive ICs where the energy let-through must be minimal.

Frequently asked questions

What is the melting I²t of F1206A0R25FSTR and why does it matter?

Melting I²t is 4E-05 A²s. This low value ensures the fuse opens very quickly on a fault, limiting the energy let-through to downstream components — critical for protecting low-current signal paths and small-geometry ICs.