Axial Lead & Cartridge Fuses 3AB > Slo-Blo® Fuse > 325/326 Series 325/326 Series Lead-Free 3AB, Slo-Blo® Fuse PS E RoHS Pb Description The 3AB Slo-Blo® Fuse with ceramic body construction permits higher interrupting ratings and voltage ratings. Ideal for applications where high current loads are expected. Features • In accordance with UL Standard 248-14 • Available in cartridge and axial lead format and with various forming dimensions Agency Approvals Agency PS E • RoHS compliant and Lead-free Agency File Number Ampere Range E10480 0.250A - 10A E10480 12A - 30A 29862 0.250A - 30A Cartridge: NBK 030805-E10480A NBK 030805-E10480C NBK 030805-E10480E NBK 260106-JP1021A Leaded: NBK 030805-E10480B NBK 030805-E10480D NBK 030805-E10480F NBK 260106-JP1021B SU05001-5010 SU05001-5011 SU05001-5012 SU05001-6006 SU05001-6007 1A-3.2A 4A-5A 6.25A-15A 20A-30A 1A-3.2A 4A-5A 6.25A-15A 20A-30A 7-10A 12A, 15A 20A 2.8A-3.2A 2.5A T 50239752 01 *12A/*15A/*20A N/A 0.010A - 30A Applications Used as supplementary protection in appliance or utilization equipment to provide individual protection for components or internal circuits. Electrical Characteristics for Series % of Ampere Rating Ampere Rating Opening Time 100% 0.010A – 30A 4 hours, Minimum 135% 0.010A – 30A 1 hour, Maximum 0.010A – 3.2A 5 sec., Min., 30 sec., Max. 4A – 30A 5 sec., Min., 60 sec., Max. 200% Additional Information * Approved for cartridge version only © 2015 Littelfuse, Inc. Specifications are subject to change without notice. Application testing is strongly recommended. Revised: 08/11/15 Datasheet 325 Series Resources 325 Series Samples 325 Series Datasheet 326 Series Resources 326 Series Samples 326 Series Axial Lead & Cartridge Fuses 3AB > Slo-Blo® Fuse > 325/326 Series Electrical Characteristic Specifications by Item Ampere Rating (A) Voltage Rating (V) .010 0.01 .031 0.031 .062 Agency Approvals Nominal Cold Resistance (Ohms) Nominal Melting I2t (A2 sec) 250 3324.8000 0.00013 x 250 332.5000 0.0110 x 0.062 250 91.7000 0.0276 x .100 0.1 250 33.5500 0.0870 x .125 0.125 250 22.4500 0.100 x .150 0.15 250 15.4500 0.143 x .175 0.175 250 8.9200 0.350 x .187 0.187 250 7.7250 0.330 x .200 0.2 250 6.7700 0.316 .250 0.25 250 4.4300 0.804 x x x Amp Code Interrupting Rating 100A@250Vac PS E x .300 0.3 250 3.2200 1.230 x x x .375 0.375 250 2.1550 1.20 x x x .400 0.4 250 1.9350 1.33 x x x .500 0.5 250 1.3000 4.80 x x x x .600 0.6 250 0.9495 3.90 x x .700 0.7 250 0.7215 6.42 x x x .750 0.75 250 0.6410 13.00 x x x .800 0.8 250 0.5725 8.20 001. 1 250 0.3890 16.3 100A@250Vac 10KA@125Vac 10KA@125Vdc x x x x x x x 01.2 1.2 250 0.2860 22.0 x x x x 1.25 1.25 250 0.2680 40.0 x x x x 01.5 1.5 250 0.1975 59.7 x x x x 01.6 1.6 250 0.1760 66.0 x x x x 002. 2 250 0.1210 118.0 x x x x 02.5 2.5 250 0.0835 185.0 x x x x x 02.8 2.8 250 0.0695 232.0 x x x x x 003. 3 250 0.0605 200.0 x x x x x 0.0539 214.0 x x x x x 03.2 3.2 250 100A@250Vac 10KA@125Vac 004. 4 250 0.0761 9.71 x x x x 005. 5 250 0.0522 25.0 x x x x 6.25 6.25 250 0.0346 60.4 x x x x 007. 7 250 0.0227 47.3 x x x x x 008. 8 250 0.0193 67.1 x x x x x 010. 10 250 x x x x 400A@250Vac 10KA@125Vac 10KA@125Vdc 0.0132 137 x 0.0067 129 x 012. 12 250 400A@250Vac 10KA@125Vac 600A@125Vdc 012.* 12 250 1500A@250Vac 0.0011 618 0.0050 245 015. 15 250 400A@250Vac 10KA@125Vac 600A@125Vdc 015.* 15 250 1500A@250Vac 0.0083 760 250 400A@250Vac 10KA@125Vac 600A@125Vdc 0.0034 575 020. 20 x x x x x x x x x x x x x x x x x x x 020.* 20 250 1500A@250Vac 0.0042 2500 x 025.** 25 250 1500A@250Vac 0.0032 4682 x 400A@250Vac 10KA@60Vdc 600A@125Vdc 0.0024 1030 x x x x 0.0019 1690 x x x x 025. 25 250 030. 30 250 *Higher i2t version available. Please add suffix “D” to part numbers. For instance, 0325020.MXDP, 0326020.MXDP I2t test at 10× rated current. **Higher I2t version available. Please add suffix “W” to part numbers. For instance, 0325025.MXWP ***Approved for cartridge versions only, and interrupting rating is 400A@125Vac and 400A@250Vac x*** x x*** x x*** x x © 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 08/11/15 Axial Lead & Cartridge Fuses 3AB > Slo-Blo® Fuse > 325/326 Series Average Time Current Curves .375A .500A .750A 1.0A 1.5A 2.0A 2.5A 3.0A 3.5A 4.0A 5.0A 6.25A 7.0A 8.0A 10.0A 12.0A 15.0A 20.0A 25.0A 30.0A Temperature Re-rating Curve 1000 100 TIME IN SECONDS 10 Note: Rerating depicted in this curve is in addition to the standard derating of 25% for continuous operation. 1 0.1 0.01 0.05 0.1 10 1 100 1000 CURRENT IN AMPERES Soldering Parameters - Wave Soldering Recommended Process Parameters: 280 260 Wave Parameter 240 220 Lead-Free Recommendation Preheat: 200 (Depends on Flux Activation Temperature) 180 160 140 120 100 80 60 40 (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 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 Recommended Hand-Solder Parameters: 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: 08/11/15 Axial Lead & Cartridge Fuses 3AB > Slo-Blo® Fuse > 325/326 Series Product Characteristics Materials Terminal Strength Body: Ceramic Cap: Nickel–plated brass Leads: Tin–plated Copper MIL-STD-202, Method 211, Test Condition A Thermal Shock Vibration: Solderability MIL-STD-202 Method 208 Product Marking Cap1: Brand logo, current and voltage ratings Cap2: Series and agency approval marks Humidity Salt Spray Part Numbering System Dimensions Measurements displayed in millimeters (inches) 326 000P Series (cartridge) 0325 xxxx M X P 325 000P Series (axial leaded) 6.35±0.3 (.25") Series Amp Code 6.985±0.3 (.275") 31.75±1.12 (1.25") –55ºC to +125ºC MIL-STD-202, Method 107, Test Condition B:(5 cycles - 65ºC to 125ºC) MIL-STD-202, Method 201 MIL-STD-202, Method 103, Test Condition A: High RH (95%) and Elevated temperature(40ºC) for 240 hours MIL-STD-202, Method 101, Test Condition B Operating Temperature Refer to Amp Code column of Electrical Characteristics Table 32.72±1.12 (1.288") Axial Lead Diameter: 0.81±0.05 (.032") for (0.01A - 15A) 1.02±0.06 (.040") for (20A - 30A) Quantity Code Axial Lead Length: 38.1±3.15 (1.50") TYP. M = 1000 Packaging Code Axial Lead Material: Tin-coated copper X = Filler Lead-free Packaging Packaging Option 325 Series Bulk Bulk Bulk Bulk Bulk Bulk Bulk Bulk 326 Series Bulk Bulk Bulk Bulk Bulk Packaging Specification Quantity Quantity & Packaging Code Taping Width N/A N/A N/A N/A N/A N/A N/A N/A 5 100 1000 1000 1000 1000 1000 1000 VX HX MX MX52 MX52L MXD MXF31 MXW N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 5 100 1000 1000 1000 VX HX MX MXCC MXD N/A N/A N/A N/A N/A © 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 08/11/15