Surface Mountable PTC Resettable Fuse: FSMD 035-R 1. Summary (a) RoHS Compliant & Halogen Free (b) Applications: All high-density boards (c) Product Features: Small surface mountable, Solid state, Faster time to trip than standard SMD devices, Lower resistance than standard SMD devices (d) Operation Current: 350mA (e) Maximum Voltage: 16V (f) Temperature Range : -40℃ to 85℃ 2. Agency Recognition UL: File No. E211981 C-UL: File No. E211981 TUV: File No. R50004084 3. Electrical Characteristics (23℃) Part Number FSMD035-R Hold Trip Rated Max Typical Max Time to Trip Current Current Voltage Current Power Current IH, A IT, A VMAX, VDC IMAX, A Pd, W 0.35 0.70 16 40 0.8 Resistance Time RMIN R1MAX Amp Sec Ohms Ohms 8.0 0.10 0.32 1.50 IH=Hold current-maximum current at which the device will not trip at 23℃still air. IT=Trip current-minimum current at which the device will always trip at 23℃ still air. V MAX=Maximum voltage device can withstand without damage at it rated current.(I MAX) I MAX= Maximum fault current device can withstand without damage at rated voltage (V MAX). Pd=Typical power dissipated-type amount of power dissipated by the device when in the tripped state in 23℃ still air environment. RMIN=Minimum device resistance at 23℃ prior to tripping. R1MAX=Maximum device resistance at 23℃ measured 1 hour after tripping or reflow soldering of 260℃ for 20 seconds. Termination pad characteristics Termination pad materials: Pure Tin 4. FSMD Product Dimensions (Millimeters) Part Number FSMD035-R A B C D E Min Max Min Max Min Max Min Max Min Max 4.37 4.73 3.07 3.41 0.40 0.70 0.30 0.95 0.25 0.65 NOTE : Specification subject to change without notice. 5. Thermal Derating Curve Percent of Rated Hold and Trip C urrent FSMD 035-R 200% 150% 100% 50% 0% -40 -20 0 20 40 60 80 Ambient Temperature (C) 6. Typical Time-To-Trip at 23℃ FSMD035-R 100 Time-to-trip (S) 10 1 0.1 0.01 0.001 0.1 1 10 Fault current (A) NOTE : Specification subject to change without notice. 100 7. Material Specification Terminal pad material: Pure Tin Soldering characteristics: Meets EIA specification RS 186-9E, ANSI/J-std-002 Category 3 8. Part Numbering and Marking System Part Numbering System Part Marking System FSMD □ □ □ R F035 F □ □ □ Current Rating Part Identification Example 9. Pad Layouts、Solder Reflow and Rework Recommendations The dimension in the table below provide the recommended pad layout for each FSMD1812 device Pad dimensions (millimeters) A B Device Nominal Nominal FSMD035-R 3.45 1.78 Profile Feature Average Ramp-Up Rate (Tsmax to Tp) Preheat : Temperature Min (Tsmin) Temperature Max (Tsmax) Time (tsmin to tsmax) Pb-Free Assembly 3 ℃/second max. 150 ℃ 200 ℃ 60-180 seconds Time maintained above: Temperature(TL) 217 ℃ Time (tL) 60-150 seconds Peak/Classification Temperature(Tp) : 260 ℃ Time within 5℃ of actual Peak : 20-40 seconds Temperature (tp) Ramp-Down Rate : 6 ℃/second max. 8 minutes max. Time 25 ℃ to Peak Temperature : Note 1: All temperatures refer to of the package, measured on the package body surface. NOTE : Specification subject to change without notice. C Nominal 3.50 Solder reflow ※ Due to “Lead Free” nature, Temperature and Dwelling time for the soldering zone is higher than those for Regular. This may cause damage to other components. 1. Recommended max past thickness > 0.25mm. 2. Devices can be cleaned using standard methods and aqueous solvent. 3. Rework use standard industry practices. 4. Storage Envorinment : < 30℃ / 60%RH Caution: 1. If reflow temperatures exceed the recommended profile, devices may not meet the performance requirements. 2. Devices are not designed to be wave soldered to the bottom side of the board. Reflow Profile Warning: -Operation beyond the specified maximum ratings or improper use may result in damage and possible 甲、 electrical arcing and/or flame. -PPTC device are intended for occasional overcurrent protection. Application for repeated overcurrent condition and/or prolonged trip are not anticipated. -Avoid contact of PPTC device with chemical solvent. Prolonged contact will damage the device performance. NOTE : Specification subject to change without notice.