023902.5MXP
Fuse, Cartridge, Slow Blow, 2.5 A, 250 V, 5mm x 20mm, 0.2" x 0.79", Slo-Blo 239 Series
- Manufacturer: LITTELFUSE
- Product type: Cartridge Fuses
- Blow Characteristic:Time Delay; Fuse Current:2.5A; Voltage Rating VAC:250V; Fuse Size Metric:5mm x 20mm; Fuse Size Imperial:-; Product Range:239 Series; Breaking Capacity Current AC
- SVHC: No SVHC (25-Jun-2020)
- Fuse Current: 2.5A
- Product Range: Slo-Blo 239 Series
- Fuse Size Metric: 5mm x 20mm
- Fuse Size Imperial: 0.2" x 0.79"
- Voltage Rating VAC: 250V
- Blow Characteristic: Slow Blow
- Breaking Capacity Current AC: 100A
| Delivery and price | |
|---|---|
| Units per pack | 1000 |
| Price | 0.451 € |
| Current stock | 500+ |
| Lead time | 30 days |
**Axial Lead & Cartridge Fuses** 5×20 mm > Slo-Blo[® ] Fuse > 239 Series ~~**Ro**~~ **HS** ~~**Pb**~~ **PSE** ~~1OW @<CRE~~ ## 239 Series, 5×20 mm, Slo-Blo[®] F ~~use~~ ## **Description** ~~Fo~~ 5×20mm Slo-Blo[®] glass body cartridge fuse designed to UL specification. ## ~~**Features**~~ - Desinged to UL/CSA/ • RoHS compliant and ANCE 248 Standard lead-free - • Available in cartridge and axial lead format **==> picture [504 x 254] intentionally omitted <==** **----- Start of picture text -----**<br> Agency Approvals<br>Applications<br>Pe EE<br>Agency Agency File Number Ampere Range<br>Used as supplementary protection in appliance or<br>Cartridge: utilization equipment to provide individual protection for<br> NBK030609-JP1021A 1A – 3.5A<br>components or internal circuits.<br> NBK190609-JP1021A 4A – 5A<br>PS NBK030609-JP1021B 7A<br>E Leaded:<br> NBK030609-JP1021C 1A – 3.5A Electrical Characteristics for Series<br>a NBK190609-JP1021B 4A – 5A PO<br> NBK030609-JP1021D 7A % of Ampere Ampere<br> SU05001 – 2004A Rating Ratings Opening Time<br>0.200A – 3.15A<br>[@ SU05001 – 2014A 4A – 7A 100% 4 hours, Minimum<br>135% All Ratings 1 hour, Maximum<br>@) E10480 0.080A – 7A<br>200% 5 seconds., Min; 2 min., Max<br>0.200A – 3.15A<br> 29862<br>4A – 7A Additional Information<br>SI LC<br> N/A 0.080A – 7A<br>. g<br>Datasheet Resources Samples<br>**----- End of picture text -----**<br> **Samples** © 2015 Littelfuse, Inc. Specifications are subject to change without notice. Application testing is strongly recommended. Revised: 07/14/15 **Axial Lead & Cartridge Fuses** 5×20 mm > Slo-Blo[® ] Fuse > 239 Series **==> picture [94 x 32] intentionally omitted <==** ## ~~**Electrical Characteristic Specifcation by Item**~~ **==> picture [507 x 295] intentionally omitted <==** **----- Start of picture text -----**<br> Agency Approvals<br>Voltage Nominal Cold Nominal<br>Amp Rating Interrupting<br>Amp Code Rating Resistance Melting<br>(A) (V) Rating (Ohms) I [2] t (A [2] sec) PSE<br>.080 0.08 250 28.1750 0.02500 x x<br>.100 0.1 250 17.3425 0.05500 x x<br>.125 0.125 250 11.6000 0.08500 x x<br>.150 0.15 250 8.1000 0.13000 x x<br>.200 0.2 250 3.8725 0.16500 x x x x<br>.250 0.25 250 3.0700 0.34000 x x x x<br>.300 0.3 250 35A @ 250 VAC 2.3000 0.61500 x x x x<br>.400 0.4 250 10000A @ 125 VAC 1.4750 2.02000 x x x x<br>.500 0.5 250 0.9090 1.98500 x x x x<br>.600 0.6 250 0.6990 2.41500 x x x x<br>.700 0.7 250 0.5375 4.12000 x x x x<br>.750 0.75 250 0.4710 5.42500 x x x x<br>.800 0.8 250 0.4155 7.56500 x x x x<br>001. 1 250 0.2965 11.29500 x x x x x<br>1.25 1.25 250 0.1980 19.52500 x x x x x<br>01.6 1.6 250 0.1205 30.43000 x x x x x<br>002. 2 250 0.0943 50.58500 x x x x x<br>02.5 2.5 250 10000A @ 125 VAC 0.0583 79.70500 x x x x x<br>003. 3 250 100A @ 250 VAC 0.04877 129.51000 x x x x x<br>3.15 3.15 250 0.0414 128.05000 x x x x x<br>03.2 3.2 250 0.0385 128.05000 x x x<br>03.5 3.5 250 0.0370 128.05000 x x x<br>004. 4 125 0.0312 270.703 x x x x x<br>005. 5 125 10000A @ 125 VAC 0.0199 302.836 x x x x x<br>007. 7 125 0.0114 305.758 x x x x x<br>**----- End of picture text -----**<br> © 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 07/14/15 **Axial Lead & Cartridge Fuses** 5×20 mm > Slo-Blo[® ] Fuse > 239 Series **==> picture [93 x 32] intentionally omitted <==** **==> picture [261 x 19] intentionally omitted <==** **----- Start of picture text -----**<br> Temperature Re-rating Curve<br>**----- End of picture text -----**<br> **==> picture [261 x 319] intentionally omitted <==** **----- Start of picture text -----**<br> Average Time Current Curves<br>10000<br>1000<br>100<br>10<br>1<br>0.1<br>0.01<br>0.001<br>0.1 1 10 100 1000<br>CURRENT IN AMPERES<br>0.200A 0.250A 0.300A 0.400A 0.500A 0.600A 0.700A 0.750A 0.800A 1A 1.25A 1.6A 2A 2.5A 3A 3.15A 4A 5A 7A<br>TIME IN SECONDS<br>**----- End of picture text -----**<br> **==> picture [243 x 200] intentionally omitted <==** **==> picture [17 x 5] intentionally omitted <==** **----- Start of picture text -----**<br> Note:<br>**----- End of picture text -----**<br> Rerating depicted in this curve is in addition to the standard derating of 25% for continuous operation. ## ~~**Soldering Parameters - Wave Soldering**~~ **==> picture [243 x 171] intentionally omitted <==** **----- Start of picture text -----**<br> 300<br>280<br>260<br>240<br>220<br>200<br>180<br>160<br>140<br>120<br>100<br>80<br>60<br>40<br>20<br>0<br>Time (Seconds)<br>Preheat Time Cooling Time<br>Dwell Time<br>Temperature (°C) - Measured on bottom side of board 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240<br>**----- End of picture text -----**<br> ## **Recommended Process Parameters:** **==> picture [244 x 102] intentionally omitted <==** **----- Start of picture text -----**<br> Wave Parameter Lead-Free Recommendation<br>Preheat:<br>(Depends on Flux Activation Temperature) (Typical Industry Recommendation)<br> Temperature Minimum: 100°C<br> Temperature Maximum: 150°C<br> Preheat Time: 60-180 seconds<br>Solder Pot Temperature: 260°C Maximum<br>Solder Dwell Time: 2-5 seconds<br>**----- End of picture text -----**<br> ## **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: 07/14/15 **Axial Lead & Cartridge Fuses** 5×20 mm > Slo-Blo[® ] Fuse > 239 Series **==> picture [94 x 32] intentionally omitted <==** ## ~~**Product Characteristics**~~ **==> picture [515 x 305] intentionally omitted <==** **----- Start of picture text -----**<br> Body: Glass Operating Temperature –55ºC to +125ºC<br>Materials Cap: Nickel–plated brass<br>Leads: Tin–plated Copper MIL-STD-202, Method 107, Test<br>MIL-STD-202, Method 211, Thermal Shock Condition B: (5 cycles –65ºC to<br>Terminal Strength Test Condition A +125ºC)<br>Vibration MIL-STD-202, Method 201<br>Solderability MIL-STD-202 Method 208<br>MIL-STD-202, Method 103, Test<br>Humidity Condition A. high RH (95%) and<br>Cap 1: Brand logo, current and voltage elevated temp (40ºC) for 240 hours<br>Product Marking rating MIL-STD-202, Method 101, Test<br>Cap 2: Series and agency approval Salt Spray Condition B<br>markings<br>Dimensions Part Numbering System<br>20+0.5 0239 xxxx M X P<br>0239 000P 5.2+0.1<br>-0.2<br>Series<br>5.1+0.6 5.1+0.6 Amp Code<br>Refer to Amp Code column of<br>5.5±0.3 Electrical Characteristics Table<br>0239 000 XEP 40±1.0 21.5±1.0<br>Quantity Code<br>M = 1000<br>0.65±0.05*<br>Packaging Code<br>All dimensions in mm X = Filler<br>Notes: Lead-free<br>**----- End of picture text -----**<br> - Ratings above 6.3A have 0.8±0.05 diameter lead. ## ~~**Packaging**~~ **==> picture [507 x 105] intentionally omitted <==** **----- Start of picture text -----**<br> Quantity &<br>Packaging Option Packaging Specification Quantity Taping Width<br> Packaging Code<br>239 Series<br>Bulk N/A 1000 MX N/A<br>Bulk N/A 1000 MXE N/A<br>Reel and Tape EIA 296-E 1000 MRET1 T1=52mm (2.062”)<br>Bulk N/A 1000 MXB N/A<br>Bulk N/A 100 HX N/A<br>Bulk N/A 100 HXE N/A<br>**----- End of picture text -----**<br> © 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 07/14/15
Updated at June 4, 2026
Founded in 1927 and headquartered in Chicago, Illinois, Littelfuse is a premier global manufacturer of circuit protection, power control, and sensing technologies. Widely recognized for pioneering the first small, fast-acting protective fuse, the company has grown into an industry leader whose highly reliable components are essential to modern industrial, transportation, and consumer electronics applications worldwide. At the core of the Littelfuse portfolio is an expansive and industry-leading range of circuit protection solutions. This encompasses a massive selection of traditional fuses, fuse holders, and resettable PTC thermistor fuses designed to safely interrupt overcurrent conditions. To defend against electrical overstress, Littelfuse also provides advanced transient voltage suppression (TVS) technologies, including thousands of specialized TVS diodes, TVS varistors, and gas discharge tubes (GDTs) that ensure robust defense against voltage spikes and environmental hazards. Beyond its foundational protection components, Littelfuse manufactures a diverse array of discrete semiconductors, sensors, and switching devices. Engineers rely on their high-performance thyristors, including TRIACs and SCRs, alongside power-efficient Schottky diodes and MOSFETs for demanding power control applications. Complemented by precision proximity sensors and highly reliable reed and solid-state relays, Littelfuse delivers the critical building blocks required for secure, efficient, and complete system design.
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