0443004.DRLC
SMD FUSE, TIME DELAY, 4A, 280VAC
- Manufacturer: LITTELFUSE
- Product type: SMD Fuses
- Fuse Current:4A; Blow Characteristic:Time Delay; Voltage Rating VAC:280V; Voltage Rating VDC:-; Fuse Case Style:4012; Product Range:NANO2 Slo-Blo 443LC Series; Breaki 27AM6682
| Delivery and price | |
|---|---|
| Units per pack | 50 |
| Price | 1.4 € |
| Current stock | 1000+ |
| Lead time | 30 days |
**Surface Mount Fuses** NANO[2® ] > 280VAC > Slo-Blo[®] Fuse > 443LC Series
~~HF{__|cSAMus~~ ~~**RoHS**~~
## 443LC Series Fuse
## ~~**Description** [oT~~
The 443LC Series 280V Nano[2] Fuse is a small square surface mount fuse that is designed to enable compliance with the RoHS directive. This product is fully compatible with lead-free solder alloy and higher temperature profiles associated with lead-free assembly.
## ~~**Features**~~
- 280VAC voltage rating • Fully compatible with • Slo-Blo[®] Fuse lead-free solder alloys and higher temperature
- • Available 0.50A – 5.00A profiles associated with • RoHS Compliant and lead-free assembly halogen-free • UL Recognized to UL/ CSA/NMX 248-1 and UL/ CSA/NMX 248-14
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Agency Approvals Applications<br>EE,<br>Agency Agency File Number Ampere Range • AC/DC power adaptor • High voltage DC/DC<br>converter<br>• Telecom equipment<br>E10480 0.500A - 5.00A<br>Wis system power • Lighting System<br>• Portable system built-in • LED Lighting<br>AC/DC converter<br>Electrical Characteristics for Series Additional Information<br>Lo<br>% of Ampere Rating Opening Time<br>100% 4 hours, Minimum<br>250% 120 seconds, Maximum<br>—_— Datasheet Resources Samples ka<br>Electrical Specifcations by Item<br>[<br>Ampere Rating Max Interrupting Nominal Cold Nominal Melting Nominal Agency Approvals<br>(A) Amp Code Voltage Rating Rating Resistance (Ohms) I [2] t (A [2] sec) Voltage Drop<br>(V) | | (mV) A:<br>0.50 .500 280 0.600 1.61 448 x<br>0.75 .750 280 0.275 3.025 285 x<br>ee ee a<br>1 001. 280 0.180 10.17 234 x<br>Po a ee<br>1.50 01.5 280 0.100 14.72 196 x<br>ee ee a<br>2 002. 280 0.052 18.06 154 x<br>Po 50A @280VAC a ee<br>2.50 02.5 280 0.035 18.13 139 x<br>ee ee a<br>3 003. 280 0.028 51.44 113 x<br>Po a ee<br>3.50 03.5 280 0.019 53.14 98 x<br>ee ee a<br>4 004. 280 0.016 122.50 81 x<br>Po a ee<br>5 005. 280 0.0115 180.60 80 x<br>————<br>Notes: ee ee<br>1. Cold resistance measured at less than 10% of rated current at 23°C.<br>**----- End of picture text -----**<br>
**2.** Agency Approval Table Key: X=Approved or Certified, P=Pending and Blank=Not Approved
**3.** Have special electrical characteristic needs? Contact Littelfuse to learn more about application specific options.
© 2019 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 11/25/19
**Surface Mount Fuses** NANO[2® ] > 280VAC > Slo-Blo[®] Fuse > 443LC Series
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## ~~**Temperature Re-rating Curve**~~
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Note:
1. Derating depicted in this curve is in addition to the standard derating of 25% for continuous operation.
## ~~**Average Time Current Curves**~~
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100<br>10<br>1<br>0.1<br>0.01<br>0.001<br>0.1 1 10 100 1000<br>CURRENT IN AMPS<br>0.50 A 0.75 A 1.00 A 1.50 A 2.00 A 2.50 A 3.00 A 3.50 A 4.00 A 5.00 A<br>TIME IN SECONDS<br>**----- End of picture text -----**<br>
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|---|---|---|---|---|---|---|
|Soldering Parameters|
|Reflow Condition|Pb – Free assembly|
|- Temperature Min (Ts(min))|150°C|t|P|
|Pre Heat|- Temperature Max (Ts(max))|200°C|T|P|Critical Zone|
|- Time (Min to Max) (ts)|60 – 180 secs|Ramp-up|TL to TP|
|Average ramp up rate (Liquidus Temp (TL) to peak|5°C/second max.|T|L|
|TS(max) to TL - Ramp-up Rate|5°C/second max.|T|S(max)|t|L|
|Reflow|- Temperature (TL) (Liquidus)|217°C|
|- Temperature (tL)|60 – 150 seconds|Ramp-down|
|Peak Temperature (TP)|260|[+0/–5]|°C|T|S(min)|Preheat|
|Time within 5°C of actual peak Temperature (tp)|20 – 40 seconds|t|S|
|Ramp-down Rate|5°C/second max.|
|Time 25°C to peak Temperature (TP)|8 minutes max.|25|
|Do not exceed|260°C|time to peak temperature|Time|
|(t 25ºC to peak)|
|Wave Soldering Parameters|260°C Peak Temperature, 3 seconds max.|
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© 2019 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 11/25/19
**Surface Mount Fuses** NANO[2® ] > 280VAC > Slo-Blo[®] Fuse > 443LC Series
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## ~~**Product Characteristics**~~
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Materials Body: Ceramic Operating Temperature –55 [O] C to 125 [O] C with proper derating<br>Cap: Silver Plated Brass MIL-STD-202, Method 107,<br>Body: Brand Logo, Current Rating Thermal Shock Test Condition B (5 cycles -65 [o] C<br>Product Marking Rated Voltage, T - C to +125 [o] C)<br> Characteristic “T” MIL-STD-202, Method 201<br>Vibration<br>Insulation Resistance MIL-STD-202, Method 302, (10-55 Hz)<br>(after Opening) Test Condition A (10,000 ohms, Minimum) Moisture Resistance MIL-STD-202, Method 106,<br>Solderability MIL-STD-202, Method 208 High Humidity (90-98%RH), Heat (65 [o] C)<br>MIL-STD-202, Method 101,<br>Resistance to Soldering MIL-STD-202, Method 210, Salt Spray Test Condition B<br>Heat Test Condition B (10 sec at 260 [o] C)<br>MIL-STD-202, Method 213,<br>Moisture Sensitivity Level Level 1 J-STD-020 Mechanical Shock Test Condition I (100 G’s peak for<br>Min. copper layer thickness = 100um 6 milliseconds)<br>Min. copper trace width = 10mm<br>PCB Recommendation for Alternate methods of thermal management<br>Thermal Management may be used. In such cases, under normal<br>operations, the maximum temperature of<br>the fuse body should not exceed 80 [O] C in a<br>25 [O] C ambient environment.<br>Dimensions Part Numbering System<br>3.25<br>10.10 (.128") 0443 .500 D R LC<br>(.397")<br>6.10<br>5A T 3.12 (.240") 3.43 Series<br>AC280V (.123") (.135")<br>AMP Code<br>12.6 Refer to Electrical charac-<br>3.12 (.496") teristics table<br>(.123")<br>Quantity Code<br>1.70 typ(.067") Recommended Pad Layout D = 1500 pcs<br>Packaging Code<br>R = Tape and Reel<br>Voltage Rating<br>280VAC<br>Example:<br>1.5amp product is 0443 01.5 D R LC (0.5amp<br>product shown above).<br>Packaging<br>Packaging Option Packaging Specification Quantity Quantity & Packaging Code<br> 24mm Tape and Reel EIA-RS 481-2 (IEC 286, part 3) 1500 DR<br>**----- End of picture text -----**<br>
**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: 11/25/19
Updated at June 7, 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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