SMP2A

defining a degree of excellence Type SMP 2A Surface Mount Power Cross Protection Fuse 26-Aug-03 SMP Surface mount Power Cross Protection Fuses are primarily intended for use in telecommunication circuit applications requiring low current protection with high surge tolerance. They are typically used to replace heat coil type devices. They are designed to be placed between the line input and the surge arresting components (mov. gas tube, zenor diode, air gaps, etc.) These fuses will withstand transient surge currents generated by lighting in accordance with the attached table. SMP fuses guard protected circuitry against sustained overload or short circuit conditions. Such sustained overloads may be generated by accidental contact between utility cables and phone lines (power line cross). SMP Fuse are used in circuits to obtain compliance with the test requirements specified in UL 1950/60950 and Bellcore GR 1089. Catalog Number Ampere Rating Voltage Rating Typical Cold Resistance (ohm) Volt-drop @100% In (Volt) max. 0.20 Melting I²T < 10 mSec (A² Sec) 14.0 Melting I²T @ 10 In (A² Sec) 17.0 Maximum Power Dissipation (w) 0.71 SMP 2 2A 600V 0.055 Consult manufacturer for other ratings SURGE WITHSTAND RATINGS Voltage 1000V 2500V 5000V Peak Surge Current 120A 500A 500A Maximum Rise/Duration Time 10 uS x 1000 uS 2 uS x 10 uS 2 uS x 10 uS Repetitions 100 Pulses ( 50 Each Polarity) 40 Pulses ( 20 Each Polarity) 4 Pulses ( 2 Each Polarity) Double -exponential Impulse Waveform Electrical Characteristics (UL STD. 248-14) Blow Time Testing Current Minimum 110% 200% 500% 1000% 4 hrs. N/A 100 msec 30 msec Maximum N/A 60 sec 1.5 sec 300 msec 3A 7A 30A 60A 600V 600V 600V 600V Overload Current Voltage Minimum 1.1 sec 0.4 sec N/A N/A Maximum 900 sec 2.5sec 65 msec 13 msec Power Cross (Telecom) Rating Clearing Time Limit Current (Peak Value) Ip Waveform Duration Of A/B Seconds A=Rise Time=T1-T0 (1.25(b-a) B= Duration =T2-T0 0.1 Ip Safety Agency Approvals Approval Standards File No. Interrupting Rating 60A@ 600Vac Power Factor Resistive a T0 Intended Application Telecom Protection b T1 Time T2 Physical specification Materials Ceramic Body / Tin Plated Brass Caps Lead Free Solder On fuse: "bel", "Current Rating" On label: Above info; "Type", "Voltage Rating", "Appropriate Safety Logos" Recognized File no. E20624 100A@ 125Vdc Resistive General Purpose Marking Environmental Specifications Soldering Techniques & Compatability Reflow: 240°C, 30sec max. Wave Solder: 260°C, 3 sec max. Shock MIL-STD-202, Method 213, Test Condition I (100 G's peak for 6 milliseconds). Vibration MIL-STD-202, Method 201 (10-55 Hz, 0.06 inch, total excursion). Salt Spray MIL-STD-202, Method 101, Test condition B (48 hrs). Insulation Resistance MIL-STD-202, Method 302, Test Condition A (After Opening) 10,000 ohms minimum. Solderability MIL-STD-202, Method 208. Resistance to solder Heat: MIL-STD-202, Method 210, Test Condition J (235°C, 30 sec) Thermal Shock MIL-STD-202, Method 107, Test Condition B (-65°C to +125°C) Operating Temperature -55°C to +125°C Specification Subject To Change Without Notice Packaging Interrupting Rating plus " " 2000 fuses in 13 inches dia. Reel, 16mm wide tape, 8mm pitch, per EIA standard 481 Mechanical Dimensions bel 2A SMP defining a degree of excellence Type SMP 2A Surface Mount Power Cross Protection Fuse SMP - TIME CURRENT CHARACTERISTIC CURVE 2A 10000 1000 100 TIME IN SECONDS 10 1 0.1 0.01 0.01 0.1 1 10 100 1000 CURRENT IN AMPERES