0443001.DR.

Fuse **Datasheet** 

**443 Series** Slo-Blo[®] Fuse 

## **RoHS PSE** [_JHFAdusleA < 

## **Description** 

The 250V Nano2® 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** 

## **Additional Information** 

- 250 VAC voltage rating 

- Slo-Blo® Fuse 

- Available 0.50A – 5.00A 

- Halogen-free and RoHS Compliant 

- Fully compatible with lead-free solder alloys and higher temperature profiles associated with lead-free assembly 

- Recognized to UL/CSA/NMX 248-1 and UL/CSA/NMX 248-14 

- Conforms to K60127-1 and K60127-7 

- Conforms to DENAN’s Appendix 3 

- Conforms to IEC/EN 60127-1 and IEC/EN 60127-7 

## **Applications** 

- AC/DC power adaptor 

   - Lighting System 

- Telecom equipment system ■ LED Lighting power 

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- Portable system built-in AC/ DC converter 

## **Agency  Approvals** 

## **Electrical Characteristics for Series** 

|**Agency**<br>~~Wis~~|**Agency File Number**<br>E10480|**Ampere Range**<br>0.500A - 5.00A|
|---|---|---|
|~~Wis~~<br>KG|SU05024 -14004<br>SU05024 -14003<br>SU05024-14002|0.500A - 0.750A<br>1.00A - 2.50A<br>3.00A-5.00A|
|**PS**<br>**E**<br>Oo|NBK290416-JP1021|1.00A – 5.00A|
|A|R50310551|0.500A - 5.00A|



|**% of Ampere Rating**<br>100%|**Opening Time**<br>4 hours, Minimum|
|---|---|
|250%|120 seconds, Maximum|



## **Electrical Specifications by Item** 

|**Ampere**<br>**Rating**<br>**(A)**<br>0.50|**Amp Code**<br>.500|**Max**<br>**Voltage Rating**<br>**(V)**<br>250|**Interrupting**<br>**Rating4**<br>50A @<br>250VAC<br>100A @<br>125VDC|**Nominal Cold**<br>**Resistance**<br>**(Ohms)**<br>0.600|**Nominal**<br>**Melting**<br>**I2t (A2sec)**<br>1.61|**Nominal**<br>**Voltage Drop**<br>**(mV)**<br>448|**Agency Approvals**|**Agency Approvals**|**Agency Approvals**|**Agency Approvals**|
|---|---|---|---|---|---|---|---|---|---|---|
||||||||x|x|**PS**<br>**E**<br>-|x|
|0.75|.750|250||0.275|3.025|285|x|x|-|x|
|1|001.|250||0.180|10.17|234|x|x|x|x|
|1.50|01.5|250||0.100|14.72|196|x|x|x|x|
|2|002.|250||0.052|18.06|154|x|x|x|x|
|2.50|02.5|250||0.035|18.13|139|x|x|x|x|
|3|003.|250||0.028|51.44|113|x|x|x|x|
|3.50|03.5|250||0.019|53.14|98|x|x|x|x|
|4|004.|250||0.016|122.5|81|x|x|x|x|
|5|005.|250||0.0115|180.6|80|x|x|x|x|



## **Notes:** 

**1.** Cold resistance measured at less than 10% of rated current at 23°C. 

**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. 

**4.** Interrupting Rating may differ based on Agency Approval.  See Agency Approval certificate for more details. 

© 2021 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD.03/09/21 

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Fuse **Datasheet** 

**443 Series** Slo-Blo[®] Fuse 

## **Temperature Re-rating Curve** 

## **Note:** 

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

## **Average Time Current Curves** 

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## **Soldering Parameters** 

|**Reflow Condition**|**Reflow Condition**|Pb – Free assembly|
|---|---|---|
|**Pre Heat**|**- Temperature Min (Ts(min))**|150°C|
||**s(min)**<br>**- Temperature Max (Ts(max))**|200°C|
||**s(max)**<br>**- Time (Min to Max) (ts)**|60 – 180 secs|
|**Average ramp up rate (Liquidus Temp (TL) to peak**||5°C/second max.|
|**TS(max) to TL - Ramp-up Rate**||5°C/second max.|
|**Reflow**|**- Temperature (TL) (Liquidus)**|217°C|
||**- Temperature (tL)**|60 – 150 seconds|
|**Peak Temperature (TP)**||260+0/–5°C|
|**Time within 5°C of actual peak Temperature (tp)**||20 – 40 seconds|
|**Ramp-down Rate**||5°C/second max.|
|**Time 25°C to peak Temperature (TP)**||8 minutes max.|
|**Do not exceed**||260°C|



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t P<br>T P<br>Critical Zone<br>Ramp-up TL to TP<br>1 T L l f<br>T S(max) t L<br>Ramp-down<br>Preheat<br>T S(min) XnLn! | : \<br>t S<br>25<br>time to peak temperature Time<br>. (t 25ºC to peak) oe —_<br>Temperature<br>**----- End of picture text -----**<br>


**Wave Soldering Parameters**[260°C Peak Temperature, 3 seconds ] max. 

© 2021 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD.03/09/21 

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Fuse **Datasheet** 

**443 Series** Slo-Blo[®] Fuse 

## **Product Characteristics** 

|**Materials**|Body: Ceramic<br>Cap:   Silver Plated Brass|
|---|---|
|**Product Marking**|Body: Brand Logo, Current Rating<br>Rated Voltage, and<br>T - Characteristic “T”|
|**Insulation Resistance**<br>(after Opening)|MIL-STD-202, Method 302,<br>Test Condition A (10,000 ohms,<br>Minimum)|
|**Solderability**|MIL-STD-202, Method 208|
|**Resistance to Soldering**<br>**Heat**|MIL-STD-202, Method 210,<br>Test Condition B (10 sec at 260oC)|
|**Moisture Sensitivity**<br>**Level**|Level 1 J-STD-020|



|**Operating Temperature**|–55OC to 125OC|
|---|---|
|**Thermal Shock**|MIL-STD-202, Method 107, Test Condition B<br>(5 cycles-65oC to +125oC)|
|**Vibration**|(5 cycles<br>MIL-STD-202, Method 201 (10-55 Hz)|
|**Moisture Resistance**|MIL-STD-202, Method 106,<br>High Humidity (90-98%RH), Heat (65oC)|
|**Salt Spray**|High Humidity (90<br>MIL-STD-202, Method 101, Test Condition B|
|**Mechanical Shock**|MIL-STD-202, Method 213, Test Condition I<br>(100 G’s peak for 6 milliseconds)|



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Dimensions Part Numbering System<br>3.25<br>10.08 (.128") 0443    .500   D   R<br>(.397")<br>6.10<br>5A T 3.05 (.240") 3.43 Series<br>AC250V (.12") (.135")<br>AMP Code<br>12.6 Refer to Electrical charac-<br>3.05 (.496") teristics table<br>(.12")<br>|<br>1.70 typ Quantity Code<br>Recommended Pad Layout<br>(.067") D = 1500 pcs<br>Packaging Code<br>| R = Tape and Reel<br>Note [a] : Dimensions in mm(inches) Example:<br>1.5 amp product is 0443 01.5 D R (0.5<br>amp product shown above).<br>**----- End of picture text -----**<br>


## **Packaging** 

|**Packaging Option**<br>24mm Tape and Reel|**Packaging Specification**<br>EIA-RS 481-2 (IEC 286, part 3)|**Quantity**<br>1500|**Quantity & Packaging Code**<br>DR|
|---|---|---|---|



**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. 

© 2021 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD.03/09/21 

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