# FUSE, PCB, 750mA, 125V, SLOW BLOW, FULL REEL

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![Product image](https://novapart.co/image/farnell:4336298/)

**URL**: https://novapart.co/products/0473.750MRT1L/fuse-pcb-750ma-125v-slow-blow-full-reel
**SKU**: 0473.750MRT1L
**Manufacturer**: LITTELFUSE
**Category**: Circuit Protection || Fuses & Fuse Accessories || Fuses || PCB Fuses
**Price**: €1.0400
**Stock**: 1000+
**Lead Time**: 116 days (indicative)

## Description

The 0473.750MRT1L from Littelfuse is a 750mA axial-leaded slow-blow PCB fuse belonging to the PICO II Slo-Blo 473 Series. Engineered with a time-delay performance characteristic, this component effectively manages high inrush current transients without premature nuisance tripping, ensuring dependable overcurrent protection in sensitive electronic circuitry. The device features a maximum voltage rating of 125VAC and 125VDC, paired with a robust breaking capacity of 50A at 125VAC/DC. With a nominal cold resistance of 0.4900 ohms and a melting $I^2t$ of 0.760 $A^2sec$, it delivers reliable operational stability across an extended operating temperature range of -60°C to +125°C.

Constructed with an encapsulated, epoxy-coated body and solder-coated copper wire leads, this axial leaded fuse complies fully with RoHS and halogen-free directives. The component is housed in a compact form factor designed for printed circuit board mounting, utilizing EIA 296 tape and reel packaging with a T1 lead length configuration of 52.4mm between tapes. Mechanical and environmental resilience is validated by MIL-STD-202 testing standards, encompassing resistance to vibration, physical shock, thermal shock, and moisture resistance, making it suitable for demanding installation environments.

This slow-blow PICO II fuse is widely integrated into power input stages, secondary circuit protection, and localized board-level isolation across consumer electronics, industrial automation hardware, lighting systems, flat-panel display televisions, LCD monitors, and medical equipment. Recommended circuit assembly involves wave soldering parameters up to 260°C for 2 to 5 seconds or manual hand-soldering at 350°C for a maximum of 5 seconds. Infrared or convection reflow soldering methods are strictly not recommended for this device topology.

## Specifications

| Parameter | Value |
|---|---|
| Svhc | To Be Advised |
| Fuse Current | 750mA |
| Product Range | PICO II Slo-Blo 473 Series |
| Fuse Case Style | Axial Leaded |
| Voltage Rating Vac | 125V |
| Voltage Rating Vdc | 125V |
| Blow Characteristic | Slow Blow |
| Breaking Capacity Current Ac | 50A |
| Breaking Capacity Current Dc | 50A |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:4336298/)

**Axial Lead & Cartridge Fuses** PICO[®] ll > Slo-Blo[®] Fuse > 473 Series 

## 473 Series, PICO[®] II Slo-Blo[®] Fuse 

## **RoH** ~~**S**~~ **PSE** ~~HFC AE ©~~ 

## ~~**Description**~~ 

The PICO[®] II Slo-Blo[®] Fuse combines time-delay performance characteristics with the proven reliability of a PICO[®] Fuse. 

## ~~**Features**~~ 

- Enhanced inrush • Halogen free and RoHS withstand complaint 

## ~~**Agency Approvals**~~ 

- Small size 

- Wide range of current ratings (0.375A - 7A) 

- Wide operating temperature range 

- Low temperature rerating 

## ~~**Applications**~~ 

|||~~**Applications**~~|
|---|---|---|
|**Agency**<br>**Agency File Number**||**Ampere Range**<br>~~**Applications**~~|
|E10480<br>29862<br>Wi<br>@.||0.375A - 7A<br>0.375A - 7A<br>• Flat–panel Display TV<br>• LCD monitor<br>• Lighting system<br>• Medical equipment<br>• Industrial equipment|
|**PS**<br>**E**<br>NBK200416-JP1021<br>~~LS~~||1A - 5A<br>~~**Electrical Characteristics**~~<br>~~[Po~~|
|% of Ampere<br>Rating<br>Opening Time<br>100%<br>4 Hours,**Min.**<br>200%<br>1 Sec.,**Min.**; 60 Sec.,**Max.**<br>300%<br>0.2 Sec.,**Min.**; 3 Sec.,**Max.**<br>800%<br>0.002 Sec.,**Min.**; 0.1 Sec.,**Max.**<br>**Additional Information**<br>**Datasheet**<br>**Samples**<br>**Resources**<br>ea ~~———~~|||
|~~**Electrical Characteristics**~~|||
||||
|Ampere<br>Rating<br>(A)<br>Amp<br>Code<br>Max<br>Voltage<br>Rating<br>(V)<br>0.375<br>.375<br>125<br>0.500<br>.500<br>125<br>0.750<br>.750<br>125<br>1.00<br>001.<br>125<br>1.50<br>01.5<br>125<br>2.00<br>002.<br>125<br>2.25<br>2.25<br>125<br>2.50<br>02.5<br>125<br>3.00<br>003.<br>125<br>3.50<br>03.5<br>125<br>4.00<br>004.<br>125<br>5.00<br>005.<br>125<br>7.00<br>007.<br>125<br>~~a~~<br>~~a~~<br>~~a~~<br>~~| |~~<br>~~a~~<br>~~| |~~<br>~~a~~<br>~~a~~<br>~~a~~<br>~~a~~<br>~~a~~<br>~~| |~~<br>~~a~~||Interrupting<br>Rating<br>Nominal Cold<br>Resistance<br>(Ohms)<br>Nominal<br>Melting<br>I2t (A2sec)<br>Nom<br>Voltage Drop<br>(mV)<br>AgencyApprovals<br>**PS**<br>**E**<br>50A@125VAC/DC<br>1.7550<br>0.085<br>0.840<br>X<br>X<br>1.1370<br>0.210<br>0.775<br>X<br>X<br>0.4900<br>0.760<br>0.429<br>X<br>X<br>0.3000<br>2.010<br>0.353<br>X<br>X<br>X<br>0.1170<br>3.940<br>0.208<br>X<br>X<br>X<br>0.0720<br>7.600<br>0.180<br>X<br>X<br>X<br>0.0640<br>9.280<br>0.164<br>X<br>X<br>X<br>0.0520<br>13.00<br>0.153<br>X<br>X<br>X<br>0.0380<br>21.00<br>0.140<br>X<br>X<br>X<br>0.0240<br>26.80<br>0.094<br>X<br>X<br>X<br>0.0200<br>35.00<br>0.086<br>X<br>X<br>X<br>0.0133<br>54.80<br>0.074<br>X<br>X<br>X<br>0.0092<br>105.00<br>0.070<br>X<br>X<br>po<br>Ww)<br>@/<<br>~~a~~<br>~~ee~~<br>~~es~~<br>~~es~~<br>~~a~~<br>~~es~~<br>~~es~~<br>~~a~~<br>~~es ee~~<br>~~es~~<br>~~es~~<br>~~es~~<br>~~es~~<br>~~a~~<br>~~es~~<br>~~es~~<br>~~a~~<br>~~ee~~<br>~~ee~~<br>~~ee~~|



© 2018 Littelfuse, Inc. Application testing is strongly recommended. Specifications are subject to change without notice. Revised: 02/15/18 

**Axial Lead & Cartridge Fuses** PICO[®] ll > Slo-Blo[®] Fuse > 473 Series 

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Temperature Re-rating Curve<br>**----- End of picture text -----**<br>


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Note: 

Rerating depicted in this curve is in addition to the standard derating of 25% for continuous operation. 

## ~~**Soldering Parameters**~~ 

## **Recommended Process Parameters:** 

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**----- 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>


## ~~**Average Time Current Curves**~~ 

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1000<br>100<br>10<br>1<br>0.1<br>0.01<br>0.1 1 10 100 1000<br>CURRENT IN AMPERES<br>.375A .50A .75A 1.0A 1.5A 2.0A 2.5A 3.0A 3.5A 4.0A 5.0A 7.0A<br>TIME IN 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.** 

© 2018 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 02/15/18 

**Axial Lead & Cartridge Fuses** PICO[®] ll > Slo-Blo[®] Fuse > 473 Series 

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## ~~**Product Characteristics**~~ 

||Encapsulated, Epoxy-Coated Body;|||MIL-STD-202, Method 201 (10–55|
|---|---|---|---|---|
|**Materials**|Solder Coated Copper wire leads;<br>RoHS compliant Product: Pure Tin-coated||**Vibration**|Hz); MIL-STD-202, Method 204, Test<br>Condition C (55–2000 Hz at 10 G’s|
||Copper wire leads|||Peak)|
|**Solderability**<br>**Lead Pull Force**<br>**Operating**<br>**Temperature**<br>**Shock**|MIL-STD-202, Method 208<br>MIL-STD-202, Method 211, Test Condition<br>A (will withstand 7 lbs. axial pull test)<br>–60ºC to +125ºC (Consider re-rating)<br>MIL-STD-202, Method 213, Test Condition<br>I (100 G’s peak for 6 milliseconds)||**Salt Spray**<br>**Insulation Resistance**<br>**(After Opening):**<br>**Resistance to Soldering**<br>**Heat**<br>**Thermal Shock**|MIL-STD-202, Method 101, Test<br>Condition B<br>MIL-STD-202, Method 302, (10,000<br>ohms minimum at 100 volts)<br>MIL-STD-202, Method 210, Test<br>Condition C (20 sec at 260ºC)<br>MIL-STD-202, Method 107, Test<br>Condition B (–65ºC to 125ºC)|
||||**Moisture Resistance**|MIL-STD-202, Method 106 (90–98%<br>RH), Heat (65ºC)|



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Dimensions<br>62.7 (2.468")<br>52.4 (2.062")*<br>27.78 27.78<br>(1.094" ) 7.11 (.280") (1.094" )<br>3.43 (.135")<br>0.64 (.025") MAX<br>1 A L F<br>6.35 (.25") 5.0 (.197") 6.35 (.25")<br>tape tape<br>1 A L F<br>473 series markings<br>**----- End of picture text -----**<br>


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Part Numbering System<br>**----- End of picture text -----**<br>


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62.7 (2.468") 0473 xxxx Y R T1 L<br>52.4 (2.062")*<br>27.78 27.78<br>(1.094" ) 7.11 (.280") (1.094" ) Series<br>3.43 (.135")<br>0.64 (.025") 1 A L F MAX Current Rating<br>Refer to Amp Code column of<br>Electrical Characteristics Table<br>6.35 (.25") 5.0 (.197") 6.35 (.25")<br>tape tape Quantity<br>1 A L F Y = 4000<br>P = 2000<br>M = 1000<br>473 series markings<br>Type of Packaging<br>R = Reel<br>A = Ammo Pack<br>X = Loose Pack<br>Lead Length<br>T1: 52.4mm (2.062”)*<br>RoHS + HF<br>Packaging<br>Quantity &<br>Packaging Option Packaging Specification<br> Packaging Code<br>      Please refer to available quantities above<br>*T1: 52.4mm (2.062") Tape and Reel EIA 296<br>in "Part Numbering System”<br>**----- End of picture text -----**<br>


Notes:  *  T1 dimension is defined as the length of the component between the two tapes. The full component length is 62.7mm (2.468"). 

**Disclaimer Notice -** Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation.  Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation.  Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation.  The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. 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.** 

© 2018 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 02/15/18 



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- [Supplier page](https://es.farnell.com/littelfuse/0473-750mrt1l/fuse-pcb-750ma-125v-slow-blow/dp/4336298)
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