MF-MSMF Series – PTC Resettable Fuses

Test Procedures and Requirements

Item

Test Condition

Accept/Reject Criteria

Visual/Mechanical

Verify dimensions and materials

Per MF physical description

Resistance

In still air @ 23 °C

Rmin ≤ R ≤ Rmax

Time to Trip

At specified current, Vmax, 23 °C, still air

T ≤ max. time to trip (seconds)

Hold Current

30 min. at Ihold, still air

No trip

Trip Cycle Life

Vmax, Imax, 100 cycles

No arcing or burning

Trip Endurance

Vmax, Imax, 48 hours

No arcing or burning

Solderability

245 °C ±5 °C, 5 seconds

95 % min. coverage

Specifications are subject to change without notice.

Users should verify actual device performance in their specific applications.

The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.

Environmental Characteristics

Item

Condition

Criteria

Operating Temperature

-40 °C to +85 °C

Recommended Storage

+40 °C max. / 70 % R.H. max.

Passive Aging

+85 °C, 1000 hours

±5 % typical resistance change

Humidity Aging

+85 °C, 85 % R.H. 1000 hours

±5 % typical resistance change

Thermal Shock

-40 °C to +85 °C, 20 times

±10 % typical resistance change

Solvent Resistance

MIL-STD-202, Method 215

No change (marking still legible)

Vibration

MIL-STD-883C, Method 2007.1 Condition A

No change (Rmin < R < R1max)

Moisture Sensitivity Level (MSL)

See Note

ESD Classification

Class 6 (per AEC-Q200-2, HBM)