SURFACE MOUNT FUSES SUBMINIATURE SURFACE MOUNT NANO2® UMF Fast-Acting Type Fuse 455 Series • The Nano2 UMF Fuse is a very small, square surface mount fuse design. • Designed to International (IEC) Standards for use globally. • Meets IEC 60127-4 UMF specifications for Fast-Acting Fuses ELECTRICAL CHARACTERISTICS: Opening Time 2 minutes, Maximum .001 sec, Min; .01 sec Max AGENCY APPROVALS: Listed to IEC 60127-4, Universal Modular Fuse-Links (UMF), 125V. AGENCY FILE NUMBERS: UL E184655. INTERRUPTING RATINGS: 50 amperes at 125 VAC/VDC ENVIRONMENTAL SPECIFICATIONS: Operating Temperature: –55°C to 125°C. 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). Salt Spray: MIL-STD-202, Method 101, Test Condition B. Insulation Resistance (After Opening): MIL-STD-202, Method 302, Test Condition A, (10,000 ohms minimum). Resistance to Soldering Heat: MIL-STD-202, Method 210, Test Condition F (20 sec. at 260°C). Thermal Shock: MIL-STD-202, Method 107, Test Condition B (–65 to 125°C). Moisture Resistance: MIL-STD-202, Method 106, High Humidity (90-98 RH), Heat (65°C). PHYSICAL SPECIFICATIONS: Materials: Body: Ceramic Terminations: Tin-Lead Alloy Plated Caps. Soldering Parameters: Wave Solder — 260°C, 10 seconds maximum Reflow Solder — 260°C, 30 seconds maximum Solderability: MIL-STD-202, Method 208. PACKAGING SPECIFICATIONS: 12mm Tape and Reel per EIA-RS481-1 (IEC 286, part 3); 1,000 per reel, add packaging suffix, MR. PATENTED ORDERING INFORMATION: Catalog Number 0455.400 0455.500 0455 001. 0455 01.6 1 Ampere Rating 0.4 0.5 1.0 1.6 Nominal Nominal Voltage Cold Resistance Melting I2t 1 Rating (Ohms) (A2 sec) 125 0.420 0.0795 125 0.305 0.143 125 0.078 0.645 125 0.0532 1.060 6.10 (.240") Recommended pad layout F 1A 3.81 (.150") 1.52 (.060") 1.45 (.057") 1.14 (.045") 2.69 (.106") 2.69 (.106") 2.03 (.080") REFLOW SOLDER Average Time Current Curves 1A 1.6A 1 hour, Minimum 200% 1000% .4A .5A 125% 100 10 TIME IN SECONDS % of Ampere Rating 1 0.1 0.01 Measured at 10% of rated current, 25°C. 0.001 0.05 0.1 42 1 10 100 CURRENT IN AMPERES 1000