SURFACE MOUNT FUSES SUBMINIATURE SURFACE MOUNT Nanofuse™ Very Fast-Acting Type Fuse ® ® Nanofuse™ has similar electrical performance characteristics to the PICO® Fuse and is designed to meet a wide variety of electrical and environmental MIL specifications for more demanding applications. ELECTRICAL CHARACTERISTICS: Opening Time 4 hours, Minimum 1 second, Maximum 5 seconds, Maximum 20 seconds Maximum Catalog Number R271.062 R271.125 R271.250 R271.375 R271.500 R271.750 R271 001 R271 01.5 R271 002 R271 02.5 R271 003 R271 03.5 R271 004 R271 005 R271 007 R271 010 R271 012 R271 015 Ampere Rating 1/16 1/8 1/4 3/8 1/2 3/4 1 11/2 2 21/2 3 31/2 4 5 7 10 12 15 Voltage Rating 125 125 125 125 125 60 60 60 60 60 60 60 60 32 32 32 32 32 Nominal Resistance Cold Ohms 7.0 1.75 0.665 0.395 0.304 0.167 0.109 0.0603 0.0440 0.0340 0.0270 0.0220 0.0190 0.0145 0.0085 0.0055 0.0044 0.0033 Nominal Melting I2 t A2 Sec. 0.0000750 0.00163 0.0106 0.0254 0.0546 0.155 0.281 0.650 0.421 0.721 1.23 1.65 2.35 3.90 10.5 24.2 45.5 70.1 .071" MIN. .236" .117" .080" MAX .070" .067" MAX. .096" .225" MAX. RECOMMENDED PAD LAYOUT 1/4A 3/8A 1/2A 3/4A 1A 1 1/2A 2A 2 1/2A 3A 3 1/2A 4A 5A 7A 10A 12A 15A Average Time Current Curves 1/8A AGENCY APPROVALS: Recognized under the Components Program of Underwriters Laboratories and Certified by CSA. AGENCY FILE NUMBERS: UL E10480, CSA LR 29862. INTERRUPTING RATINGS: 300 amperes at rated voltage VDC 50 amperes at rated voltage VAC ENVIRONMENTAL SPECIFICATIONS: Operating Temperature: – 55°C to 125°C. Shock: MIL-STD-202, Method 213, Test Condition I (100 G’s peak for six (6) milliseconds). Vibration: MIL-STD-202, Method 201 (10– 55 Hz, .06 in. total excursion). Salt Spray: MIL-STD-202 Method 101, Test Condition B (48 hrs.). Insulation Resistance (After Opening): MIL-STD-202, Method 302, Test Condition A, (1/2 Megohm 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°). PHYSICAL SPECIFICATIONS: Materials: Body: Ceramic Terminations: Plated Brass 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 (IEC 286, part 3); 1,000 per reel. PATENTED ORDERING INFORMATION: 1/16A 200% Ampere Rating 1/16 –15 1/16 – 5 7–10 12 –15 100 10 TIME IN SECONDS % of Ampere Rating 100% 1 0.1 0.01 0.001 0.05 0.1 1 10 100 CURRENT IN AMPERES 1000 27