Axial Lead & Cartridge Fuses 3AB > High I2t > 328 Series 328 Series, Lead-Free 3AB, High Surge Withstand Fuse RoHS Pb Description The 328 Series is a 300VAC rated, 10kA surge withstand, 6.3×32mm ceramic fuse, designed in accordance to UL248-14 Standard, provided in cartridge and axial-lead packages. Features – 20 hits of 10kA 8/20μs surge • Small form factor (6.3×32mm) with cartridge and axial-lead package options – Meets ANSI/IEEE C62.41.2, Category C-High • Breaking capacity: 200A@300VAC, 200A@100VDC – Meets US Dept of Energy (DOE) MSSLC/ CBEA street lighting and parking lot lighting, elevated level • Lead-free, RoHS compliant, halogen-free • High surge withstand capability Agency Approvals Agency Agency File Number Ampere Range T 50260582 01 21A E10480 21A • Compliant with UL24814 and NFPA 70 (NEC) primary fusing requirements • Operating temperature: –55°C to 125°C Electrical Characteristics for Series Applications % of Ampere Rating Opening Time 100% 4 hours, minimum 200% 120 sec., maximum Commercial and outdoor LED luminaries Outdoor electronics and electrical equipment. Surge protection for telecom application. Electrical Characteristic by ltem Amp Rating (A) Voltage Rating (VAC) Interrupting Rating Surge Rating Nominal Cold Resistance (Ohms) Nominal Melting I2t (A2 sec) 21 300 200A@300VAC 200A@100VDC 1.2/50 - 8/20µs, 20kV/10kA 20 hits 0.0042 4,800 Agency Approvals X X Additional Information Datasheet © 2015 Littelfuse, Inc. Specifications are subject to change without notice. Application testing is strongly recommended. Revised: 06/18/15 Resources Samples Axial Lead & Cartridge Fuses 3AB > High I2t > 328 Series Temperature Re-rating Curve 21 A Average Time Current Curves 10000 1000 Time (seconds) 100 Note: Rerating depicted in this curve is in addition to the standard derating of 25% for continuous operation. 10 1 0.1 0.01 0.001 10 100 1000 Amps Soldering Parameters - Wave Soldering Recommended Process Parameters: 280 Wave Parameter 260 240 Lead-Free Recommendation Preheat: 220 (Depends on Flux Activation Temperature) 200 180 160 140 120 100 80 60 (Typical Industry Recommendation) Temperature Minimum: 100°C Temperature Maximum: Preheat Time: 150°C 60–180 seconds Solder Pot Temperature: 260°C Maximum Solder Dwell Time: 2–5 seconds 40 Recommended Hand-Solder Parameters: Time (Seconds) Cooling Time Preheat Time Dwell Time 240 230 220 210 200 190 180 170 160 150 140 130 120 110 90 100 80 70 60 50 40 30 0 0 20 20 10 Temperature (°C) - Measured on bottom side of board 300 Solder Iron Temperature: 350°C ±5°C Heating Time: 5 seconds max. Note: These devices are not recommended for IR or Convection Reflow process. © 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 06/18/15 Axial Lead & Cartridge Fuses 3AB > High I2t > 328 Series Product Characteristics Materials Body: Ceramic Cap: Nickel–plated brass Leads: Tin–plated copper Terminal Strength MIL-STD-202, Method 211, Test Condition A Solderability MIL-STD-202 Method 208 Product Marking Cap1: Brand logo, current and voltage ratings Cap2: Series and agency approval marks Operating Temperature –55°C to +125°C Thermal Shock MIL-STD-202, Method 107, Test Condition B: (5 cycles –65°C to +125°C) Vibration MIL-STD-202, Method 201 MIL-STD-202, Method 103, Test Condition A. High RH (95%) and elevated temperature (40°C) for 240 hours. MIL-STD-202, Method 101, Test Condition B Humidity Salt Spray Dimensions Part Numbering System Measurements displayed in millimeters (inches). 0328 xxxx M X E P Series 6.985 (.275˝) ±0.3 6.35 (.25”) ±0.3 31.75 (1.25˝) ±1.12 1.20 (0.05˝) ±0.05 32.72 (1.288˝) ±1.12 Amp Code Refer to Amp Code column of Electrical Characteristics Table Quantity Code M = 1000 38.1 (1.50˝) ±3.15 Packaging Code X = Filler Option Codes Blank: Cartridge Type Fuse E: Axial Lead Fuse Lead-free Packaging Packaging Option Packaging Specification Quantity Quantity & Packaging Code Taping Width N/A 1000 MX N/A 328 Series Bulk © 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 06/18/15