Axial Lead & Cartridge Fuses 5×20 mm > Slo-Blo® Fuse > 239 Series 239 Series, 5×20 mm, Slo-Blo® Fuse RoHS Pb PES Description 5×20mm Slo-Blo® glass body cartridge fuse designed to UL specification. Features • Designed to UL/CSA/ • RoHS compliant and ANCE 248-1 and 248-14 lead-free Standards • Available in cartridge and axial lead format Agency Approvals Applications Used as supplementary protection in appliance or Agency Agency File Number Ampere Range utilization equipment to provide individual protection for Cartridge: components or internal circuits. NBK030609-JP1021A 1A – 3.5A NBK190609-JP1021A 4A – 5A PS NBK030609-JP1021B 7A E Leaded: Electrical Characteristics for Series NBK030609-JP1021C 1A – 3.5A NBK190609-JP1021B 4A – 5A NBK030609-JP1021D 7A % of Ampere Ampere Opening Time Rating Ratings SU05001 – 2004A 0.200A – 3.15A SU05001 – 2014A 4A – 7A 100% 4 hours, Minimum E10480 0.080A – 7A 135% All Ratings 1 hour, Maximum 0.200A – 3.15A 200% 2 minutes, Maximum 29862 4A – 7A N/A 0.080A – 7A Additional Information Datasheet Samples Resources Accessories For recommended fuse accessories for this product series, see ‘Recommended Accessories’ section. © 2019 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 07/31/19

Axial Lead & Cartridge Fuses 5×20 mm > Slo-Blo® Fuse > 239 Series Electrical Characteristic Specification by Item Voltage Nominal Cold Agency Approvals Amp Rating Interrupting Nominal Melting Amp Code Rating Resistance (A) Rating I2t (A2 sec) (V) (Ohms) PS E .080 0.08 250 28.1750 0.02500 x x .100 0.1 250 17.3425 0.05500 x x .125 0.125 250 11.6000 0.08500 x x .150 0.15 250 8.1000 0.13000 x x .200 0.2 250 3.8725 0.16500 x x x x .250 0.25 250 3.0700 0.34000 x x x x .300 0.3 250 35A @ 250 VAC 2.3000 0.61500 x x x x .400 0.4 250 10kA @ 125 VAC 1.4750 2.02000 x x x x .500 0.5 250 0.9090 1.98500 x x x x .600 0.6 250 0.6990 2.41500 x x x x .700 0.7 250 0.5375 4.12000 x x x x .750 0.75 250 0.4710 5.42500 x x x x .800 0.8 250 0.4155 7.56500 x x x x 001. 1 250 0.2965 11.29500 x x x x x 1.25 1.25 250 0.1980 19.52500 x x x x x 01.6 1.6 250 0.1205 30.43000 x x x x x 002. 2 250 0.0943 50.58500 x x x x x 02.5 2.5 250 10kA @ 125 VAC 0.0583 79.70500 x x x x x 003. 3 250 100A @ 250 VAC 0.04877 129.51000 x x x x x 3.15 3.15 250 0.0414 128.05000 x x x x x 03.2 3.2 250 0.0385 128.05000 x x x 03.5 3.5 250 0.0370 128.05000 x x x 004. 4 125 0.0312 270.703 x x x x x 005. 5 125 10kA @ 125 VAC 0.0199 302.836 x x x x x 007. 7 125 0.0114 305.758 x x x x x Temperature Re-rating Curve Average Time Current Curves 0.200A0.250A0.300A0.400A0.500A0.600A0.700A0.750A0.800A1A1.25A1.6A 2A 2.5A 3A3.15A 4A5A 7A 10000 1000 100 DS 10 N O N SEC ME I TI 1 0.1 Note: Rerating depicted in this curve is in addition to the standard derating of 25% for continuous operation. 0.01 0.001 0.1 1 10 100 1000 CURRENT IN AMPERES © 2019 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 07/31/19

Axial Lead & Cartridge Fuses 5×20 mm > Slo-Blo® Fuse > 239 Series Soldering Parameters - Wave Soldering Recommended Process Parameters: 300 C) - Measured on bottom side of board 11111222228024680246800000000000 PA S roc eTTPtldeehivremmeearaht ppitPeo:eeo an(rrttDWaa T TTtteeuueaimmprrmveeeeep pn MM:ePedrarsiaanar xtotiaumiumnmrre ueuF)em:mltue:x:r (1162T0506y00-0p1°°°Li8cCCCe0a alM sdInea-Fdcxrouimensetdur sRmy eRceocmommmenedndaatitoionn) mperature (° 246000 RSeocldoemr Dmweenldl Teimd eH:and-Solder Param2-e5t seercso:nds Te 00 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 SHoeladteinr gIr oTinm Tee:m 5p seercaotunrdes: m35a0x°.C +/- 5°C Time (Seconds) Preheat Time Cooling Time Note: These devices are not recommended for IR or Convection Dwell Time Reflow process. Product Characteristics Body: Glass Operating –55ºC to +125ºC Materials Cap: Nickel–plated brass Temperature Leads: Tin–plated Copper MIL-STD-202, Method 107, Test Condition B: (5 cycles Terminal Strength MIL-STD-202, Method 211, Thermal Shock –65ºC to +125ºC) Test Condition A Vibration MIL-STD-202, Method 201 Solderability MIL-STD-202 Method 208 MIL-STD-202, Method 103, Test Condition A. high RH Product Marking Cap 1: Brand logo, current and voltage rating Humidity (95%) and elevated temp (40ºC) for 240 hours Cap 2: Series and agency approval markings Salt Spray MIL-STD-202, Method 101, Test Condition B © 2019 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 07/31/19

Axial Lead & Cartridge Fuses 5×20 mm > Slo-Blo® Fuse > 239 Series Dimensions Part Numbering System 0239 xxxx M X P 20+0.5 0239 000P 5.2+0.1 -0.2 Series 5.1+0.6 5.1+0.6 Amp Code Refer to Amp Code column of Electrical Characteristics Table 5.5±0.3 0239 000XEP 40±1.0 21.5±1.0 Quantity Code M = 1000 0.65±0.05* Packaging Code Notes: X = Filler * Ratings above 6.3A have 0.8±0.05 diameter lead. All dimensions in mm Lead-free Packaging Packaging Option Packaging Specification Quantity Quantity & Packaging Code Taping Width 239 Series Bulk N/A 1000 MX N/A Bulk N/A 1000 MXE N/A Reel and Tape EIA 296-E 1000 MRET1 T1=52mm (2.062”) Bulk N/A 1000 MXB N/A Bulk N/A 100 HX N/A Bulk N/A 100 HXE N/A Recommended Accessories Accessory Max Application Max Application Series Description Type Voltage Amperage 345_ISF Panel Mount Shock-Safe Fuseholder 10 Holder 345 Shock-Safe Fuseholder with PC Mount, Solder Mount and Panel Mount options 20 830 PC Mount Shock-Safe Miniature Fuseholder 16 520 Metric OMNI-BLOK® Fuse Block 10 Block 646 PC Mount Miniature Fuse Block 250 6.3 658 Surface Mount Miniature Fuse Block 10 520_W PC Mount Miniature Fuse Clip 6.3 Clip 111 PC Board Mount Fuse Clip 10 445 PC Board Mount Fuse Clip 10 Notes: 1. Do not use in applications above rating. 2. Please refer to fuseholder data sheet for specific re-rating information. 3. Please contact factory for applications greater than the max voltage and amperage shown. Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at: www.littelfuse.com/disclaimer-electronics. © 2019 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 07/31/19