0451015.MRL.

**Surface Mount Fuses** NANO[2®] > Very Fast-Acting Fuse > 451/453 Series 

## 451/453 Series Fuse 

## ~~**RoHS**~~ **PSE** ~~[_[JHF-@=cAkus] @ CE<> A~~ 

## ~~**Description**~~ 

The Nano[2®] SMF Fuse is a very small, Wire-in-Air (WIA) square shape surface mount fuse that was designed for secondary side circuit over-current protection applications. These fuses are designed for PCB using surface mount technology. 

## ~~**Features**~~ 

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

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Agency Agency File Number Ampere Range<br>Adis E10480 6.3A - 20A<br>29862 0.062A - 15A<br>ca<br>1A, 1.25A, 2A, 2.5A,<br>A J50446731 3.15A, 4A, 5A, 7A, 8A,<br>10A, 12A, 20A<br>NBK030205-E10480A 1A-1.6A<br>PSE NBK030205-E10480B 2A-5A<br>S| NBK101105-E184655 6.3A - 10A<br>E10480 0.062A  - 5A<br>Oo<br>1A, 1.25A, 2A, 2.5A,<br>« NA 3.15A, 4A, 5A, 7A, 8A,<br>10A, 12A, 20A<br>**----- End of picture text -----**<br>


## ~~**Electrical Characteristics for Series**~~ 

**% of Ampere Rating Ampere Rating Opening Time** 100% 0.062 – 20 4 hours, Minimum 0.062 – 10 5 sec., Maximum 200% ~~esee~~ 12 – 20 ~~eee~~ 20 sec., Maximum **Additional Information** a **Datasheet Resources Samples 451 Series 451 Series 451 Series** e **Datasheet Resources Samples 453 Series 453 Series 453 Series** 

- Very fast-acting 

- Very fast-acting • UL Listed and • Small size Recognized to UL/CSA/ NMX UL 248-1 and UL/ 

- • Wide range of current CSA/NMX UL 248-14 rating available (see Agency Approvals) (0.062A to 20A) 

- Conforms to DENAN’s 

- • Wide operating Appendix 3 temperature range 

- Conforms to EN 60127-1 

- • RoHS compliant and and EN 60127-7 Halogen Free 

## ~~**Applications** ———~~ • Notebook PC 

- Notebook PC • Storage system 

- LCD/PDP TV 

   - Telecom system 

- LCD monitor 

   - Wireless basestation 

- LCD/PDP panel 

   - White goods 

- LCD backlight inverter 

   - Game console 

   - Office Automation equipment 

- Portable DVD player 

- Power supply 

   - Battery charging circuit protection 

- Networking 

- PC server 

   - Industrial equipment 

- Cooling fan system 

© 2020 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD. 11/05/20 

**Surface Mount Fuses** NANO[2®] > Very Fast-Acting Fuse > 451/453 Series 

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## ~~**Electrical Specifcations by Item**~~ 

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Ampere  Max Nominal Cold  Nominal  Agency Approvals<br>Rating Amp Code Voltage  Interrupting Resistance  Melting<br>(A) Rating  Rating (Ohms) I [2] t (A [2] sec) PSE<br>(V)<br>.062 .062 125 5.5000 0.00019 - x - x - -<br>.080 .080 125 4.0500 0.00033 - x - x - -<br>.100 .100 125 3.1000 0.00138 - x - x - -<br>.125 .125 125 1.7000 0.00286 - x - x - -<br>.160 .160 125 1.2157 0.0048 - x - x - -<br>.200 .200 125 0.8372 0.0089 - x - x - -<br>.250 .250 125 0.5765 0.0158 - x - x - -<br>.315 .315 125 0.3918 0.0311 - x - x - -<br>50A @125VAC/VDC<br>.375 .375 125 300A @32VDC 0.4541 0.0442 - x - x - -<br>.400 .400 125 PSE: 100A @100VAC 0.4233 0.0551 - x - x - -<br>.500 .500 125 0.3046 0.0824 - x - x - -<br>.630 .630 125 0.2022 0.1381 - x - x - -<br>.750 .750 125 0.1444 0.2143 - x - x - -<br>.800 .800 125 0.1355 0.2654 - x - x - -<br>1.00 001. 125 0.0780 0.6029 - x x x x x<br>1.25 1.25 125 0.0780 0.664 - x x x x x<br>1.50 01.5 125 0.0630 0.853 - x x x - -<br>1.60 01.6 125 0.0580 1.060 - x x x - -<br>2.00 002. 125 0.0367 0.530 - x x x x x<br>2.50 02.5 125 0.0286 1.029 - x x x x x<br>3.00 003. 125 50A @125VAC/VDC 0.0227 1.650 - x x x - -<br>3.15 3.15 125 10,000A @75VDC300A @32VDC 0.0215 1.920 - x x x x x<br>3.50 03.5 125 PSE: 100A @100VAC 0.0200 2.469 - x x x - -<br>4.00 004. 125 0.0160 3.152 - x x x x x<br>5.00 005. 125 0.0125 5.566 - x x x x x<br>6.30 06.3 125 50A @125VAC/VDC  0.0096 9.170 x x x - - -<br>7.00 007. 125 400A @32VDC 0.0090 10.32 x x x - x x<br>8.00 008. 125 PSE: 100A @100VAC 0.0077 20.23 x x x - x x<br>35A @125 VAC/<br>10.0 010. 125 50A @125 VDC 0.0056 26.46 x x x - x x<br>400A @32 VDC<br>PSE: 100A @100VAC<br>12.0 012. 65 150A @65VDC 0.0049 47.97 x x - - x x<br>15.0 015. 65 100A @65VAC 0.0037 97.82 x x - - - -<br>20.0 020. 65 400A @32VDC 0.00244 154 x - - - x x<br>**----- End of picture text -----**<br>


**Notes:** 

- l[2] t calculated at 8ms. 

- Resistance is measured at 10% of rated current, 25ºC 

© 2020 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD. 11/05/20 

**Surface Mount Fuses** 

NANO[2®] > Very Fast-Acting Fuse > 451/453 Series 

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## ~~**Temperature Re-rating Curve**~~ 

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## **Note:** 

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

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Average Time Current Curves<br>100<br>10<br>1<br>0.1<br>0.01<br>0.001<br>0.01 0.1 1 10 100 1000 10000<br>CURRENT IN AMPS<br>62mA 80mA 100mA 125mA 160mA 200mA 250mA 315mA 375mA 400mA 500mA 630mA 750mA 800mA 1A 1.25A 1.5A 1.6A 2A 2.5A 3A 3.15A 3.5A 4A 5A 6.3A 7A 8A 10A 12A15A 20A<br>TIME IN SECONDS<br>**----- End of picture text -----**<br>


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

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Reflow Condition Pb – Free assembly<br>t P<br>- Temperature Min (Ts(min)) 150°C  T P<br>Critical Zone<br>Pre Heat - Temperature Max (Ts(max)) 200°C Ramp-up TL to TP<br>Average ramp up rate (Liquidus Temp (T- Time (Min to Max) (ts) L) to peak 60 – 180 secs5°C/second max. T S(max) T L t L<br>TS(max) to TL - Ramp-up Rate 5°C/second max. Ramp-down<br>Reflow - Temperature (TL) (Liquidus) 217°C  T S(min) Preheat<br>- Temperature (tL) 60 – 150 seconds t S<br>Peak Temperature (TP) 260 [+0/–5]  °C<br>Time within 5°C of actual peak Temperature (tRamp-down Rate p) 20 – 40 seconds5°C/second max. 25 time to peak temperature(t 25ºC to peak) Time<br>Time 25°C to peak Temperature (TP) 8 minutes max.<br>Do not exceed 260°C<br>Wave Soldering Parameters 260°C Peak Temperature, 10 seconds max.<br>Temperature<br>**----- End of picture text -----**<br>


© 2020 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD. 11/05/20 

**Surface Mount Fuses** 

NANO[2®] > Very Fast-Acting Fuse > 451/453 Series 

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

||**Body:**Ceramic|
|---|---|
||**Terminations**:|
|**Materials**|Gold-Plated Caps / Sn-dipped Silver Plated Caps<br>(451 RoHS/HF series)<br>Silver-plated Caps (451MR RoHS ratings below<br>375mA and 453 RoHS Series)|
|**Product Marking**|Brand, Ampere Rating|
|**Operating Temperature**|–55°C to 125°C|
|**Moisture Sensitivity Level**|Level 1, J-STD-020|
|**Solderability**<br>**Insulation Resistance**<br>**(after Opening)**|MIL-STD-202, Method 208<br>MIL-STD-202, Method 302, Test Condition A<br>(10,000 ohms minimum)|



||MIL-STD-202, Method 107,  Test Condition|
|---|---|
|**Thermal Shock**|B, 5 cycles, -65°C / +125°C, 15 minutes @|
||each extreme|
||MIL-STD-202, Method 213, Test I:|
|**Mechanical Shock**|Deenergized.  100G’s pk amplitude,<br>sawtooth wave 6ms duration, 3 cycles|
||XYZ+xyz = 18 shocks|
||MIL-STD-202, Method 201: 0.03”|
|**Vibration**|amplitude, 10-55 Hz in 1 min.  2hrs each|
||XYZ=6hrs|
|**Moisture Resistance**|MIL-STD-202, Method 106, 10 cycles|
|**Salt Spray**|MIL-STD-202, Method 101, Test Condition<br>B(48hrs)|
|**Resistance to Soldering Heat**|MIL-STD-202, Method 210, Test condition<br>B(10 sec at 260°C)|



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Dimensions Part Numbering System<br>6.10 ± .20 2.69 ± .25 0451       001.   M     R    L<br>(.240") (.106")<br>Series<br>F 7 A 2.69 ± .25 451 = Gold / Sn-dipped Silver Plated Caps<br>(.106")<br>453 = Silver Plated Caps<br>1.45 Amp Code<br>(.057") Refer to Electrical<br>6.86 characteristics table<br>(.270")<br>Quantity code<br>3.15 M = 1000 pcs<br>(.124") N = 5000 pcs<br>2.95 Packaging code<br>1.96 (.116") R = Tape and Reel<br>(.077")<br>L-RoHS Compliant & Halogen Free<br>Recommended pad layout<br>(Gold Plated Caps)<br>SN-RoHS Compliant & Halogen Free<br>(Sn-dipped Caps)<br>**----- End of picture text -----**<br>


**NOTE:** “L” suffix applies to 451 series only - 453 series is available only as RoHS compliant version and does not require “L” suffix. Please do not include “L” suffix within 453 series ordering instructions. 

|~~**Packaging**~~||||
|---|---|---|---|
|**Packaging Option**|**Packaging Specifcation**|**Quantity**|**Quantity &**<br>**Packaging Code**|
|12mm Tape and Reel|EIA RS-481-2 (IEC 286,part 3)|5000|NR|
|12mm Tape and Reel|EIA RS-481-2 (IEC 286,part 3)|1000|MR|



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© 2020 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD. 11/05/20