04151.25DRSP

Fuse, Surface Mount, 1.25 A, Time Delay, 277 V, 250 V, 15mm x 5mm, NANO2 415 Series

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Manufacturer: LITTELFUSE
Product type: SMD Fuses

Delivery and price
Units per pack	1500
Price	0.974 €
Current stock	1000+
Lead time	30 days

Datasheet

Fuse **Datasheet** 

## **415 Series Surface Mount Fuse** NANO[2®] > 277 V > 15mm x 5mm Sq. > Time Lag 

## **RoHS PSE** HF |_]e6 A cWkus C ~~€~~ AO 

## **Description** 

Littelfuse 415 Series is a 277 VAC rated, surface mount fuse in a compact 15mm x 5mm square package Nano fuse. It has a high interrupting rating of 1500 A, needed for circuit protection on applications where high fault currents is a possibility. 

## **Features and Benefits** 

- Surface mountable and ■ RoHS compliant and comes in a small package Halogen-free size of 15mm x 5mm square ■ Recognized to UL/CSA/NMX SMD fuse 248-1 and UL/CSA/NMX 248- 

- ■ Rated voltage at 277 VAC 14 

- High interrupting rating of ■ Conforms to EN 60127-1 and 1500 A at rated voltage EN 60127-7 

- Time Lag type - designed to ■ Small size have relatively high melting I[2] t 

   - High voltage 

## **Web Resources** 

## **Application** 

Download ECAD models, order samples, and find technical recources at www.littelfuse.com 

- Power supplies 

- Lighting systems 

- Industrial equipment 

## **Agency Approvals** 

|**Agency**<br>~~cWAkus~~|**Agency**<br>~~cWAkus~~|**Agency File Number**<br>E10480|**Ampere Range**<br>0.160A - 12.5A|
|---|---|---|---|
|~~cWAkus~~<br>A||R 50598112|0.160A - 12.5A|
|Ao|**PS**<br>**E**<br>Ao|JD 50659959|1A - 12.5A|
|~~«~~||N/A|0.160A - 12.5A|
|||N/A|0.160A - 12.5A|



- White Goods 

## **Electrical Characteristics** 

|**% of Ampere Rating**<br>125%|**Opening Time at 25 ºC**<br>1 hour, Min.|
|---|---|
|200%|120 seconds, Max.|
|1000%|1 second, Max.|



## **Electrical Specifications** 

|**Ampere**<br>**Rating**<br>**(A)**<br>0.16|**Amp**<br>**Code**<br>.160|**Max**<br>**Voltage Rating**<br>**(V)**<br>277|**Interrupting**<br>**Rating**<br>1500A @ 277VAC<br>1500A @ 250VDC|**Nominal Cold**<br>**Resistance**<br>**(Ohms)**<br>9.000|**Nominal**<br>**Melting**<br>**I2t (A2sec)***<br>0.055|**Agency Approvals**|**Agency Approvals**|**Agency Approvals**|**Agency Approvals**|**Agency Approvals**|
|---|---|---|---|---|---|---|---|---|---|---|
|||||||X<br>Ms|X<br>A|X<br>~~€~~|**PS**<br>**E**<br>-<br>AO|X<br>&K|
|1.0|001.|277||0.400|3.6|X|X|X|X|X|
|1.25|1.25|277||0.267|4.5|X|X|X|X|X|
|1.6|01.6|277||0.135|4.7|X|X|X|X|X|
|2.0|002.|277||0.125|12.0|X|X|X|X|X|
|2.5|02.5|277|1500A @ 277VAC<br>1500A @ 125VDC|0.091|25.0|X|X|X|X|X|
|3.15|3.15|277||0.054|37.0|X|X|X|X|X|
|4.0|004.|277||0.040|60.0|X|X|X|X|X|
|5.0|005.|277||0.025|110.0|X|X|X|X|X|
|6.3|06.3|277||0.0168|200.0|X|X|X|X|X|
|8.0|008.|250|1500A @ 250VAC<br>1500A @ 125VDC|0.010|200.0|X|X|X|X|X|
|10.0|010.|250|1500A @ 250VAC<br>1500A @ 125VDC<br>500A @ 160VDC|0.0076|245.0|X|X|X|X|X|
|12.5|12.5|250|1000A @ 250VAC<br>1000A @ 125VDC|0.005|340.0|X|X|X|X|X|



**Notes:** 

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

**2.** Nominal Melting I[2] t is measured at 10 the Ampere Rating (In) 

**3.** Agency Approval Table key: X = Approved or Certified, P = Pending, and Blank = Not Approved 

**4.** If you have special electrical characteristic needs, contact Littelfuse to learn more about application specific options 

© 2026 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD. 05/05/26 

**1** 

Fuse **Datasheet** 

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## **415 Series Surface Mount Fuse** NANO[2®] > 277 V > 15mm x 5mm Sq. > Time Lag 

## **Temperature Derating Curve** 

## **Average Time Current Curves** 

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**----- Start of picture text -----**<br>
140%<br>120%<br>25°C<br>100%<br>80%<br>60%<br>40%<br>20%<br>0%<br>-65 -50 -35 -20 -5 10 25 40 55 70 85 100 115 130<br>Temperature in °C<br>Percentage of Derating<br>**----- End of picture text -----**<br>


**==> picture [243 x 288] intentionally omitted <==**

**----- Start of picture text -----**<br>
100<br>10<br>1<br>0.1<br>0.01<br>0.1 1 10 100<br>Current Applied (Amps)<br>160mA 1A 1.25A 1.6A 2A 2.5A 3.15A 4A 5A 6.3A 8A 10A 12.5A<br>Time to Open (seconds)<br>**----- End of picture text -----**<br>


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

## **Soldering Parameters–Reflow Soldering** 

|**Refow Condition**|**Refow Condition**|Pb-free assembly|
|---|---|---|
|**Pre Heat**|**- Temperature Min (Ts(min))**|150 °C|
||**- Temperature Max (Ts(max))**|200 °C|
||**- Time (Min to Max) (ts)**|60–180 secs|
|**Average ram**|**p up rate (Liquidus Temp (TL) to peak**|5 °C / second max.|
|**TS(max) to TL -**|**Ramp-up Rate**|5 °C / second max.|
|**Refow**|**- Temperature (TL) (Liquidus)**|217 °C|
||**- Temperature (tL)**|60–150 secs|
|**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|



**==> picture [244 x 150] intentionally omitted <==**

**----- Start of picture text -----**<br>
t P<br>T P Critical Zone<br>TL to TP<br>Ramp-up<br>T S(max) T L t L<br>Ramp-down<br>Preheat<br>T S(min)<br>t S<br>25<br>time to peak temperature Time<br>Temperature<br>**----- End of picture text -----**<br>


© 2026 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD. 05/05/26 

**2** 

Fuse **Datasheet** 

**==> picture [50 x 52] intentionally omitted <==**

## **415 Series Surface Mount Fuse** NANO[2®] > 277 V > 15mm x 5mm Sq. > Time Lag 

**==> picture [275 x 52] intentionally omitted <==**

## **Product Characteristics** 

|**Materials**|**Body:**Ceramic<br>**Cap:**Silver plated Copper alloy|
|---|---|
|**Product Marking**|Body: Brand Logo, Current Rating|
|**Insulation Resistance**<br>**(after Opening)**|MIL-STD-202, Method 302,<br>Test Condition S (10,000 ohms,<br>Minimum)|
|**MechanicalShock**|MIL-STD-202, Method 213, Test<br>Condition I|
|**Solderability**|IPC/EIA/JEDEC J-STD-002D Test<br>Condition B|
|**Resistance to Solder Heat**|JEDEC J-STD-020D|



## **Part Numbering System** 

**==> picture [243 x 93] intentionally omitted <==**

**----- Start of picture text -----**<br>
0415 3.15 D R SP<br>SP = Standard Part<br>Series Packing Code<br>R = Tape and Reel<br>AMP Code<br>Refer to Electrical  Quantity Code<br>Characteristics Table D = 1500 pcs<br>**----- End of picture text -----**<br>


## **Packaging** 

|**Operating  Temperature**|–55 °C to 125 °C with proper<br>derating|
|---|---|
|**Thermal Shock**|MIL-STD-202, Method 107, Test<br>Condition B (5 cycles -55°C to 125°C)|
|**Vibration Test**|MIL-STD-202, Method 204 Test<br>Condition D|
|**Moisture Sensitivity Level**|J-STD-020, Level 1|
|**Moisture Resistance**|MIL-STD-202 Method 106|
|**Salt Spray**|MIL-STD-202, Method 101: Test<br>Condition B|



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**----- Start of picture text -----**<br>
Dimensions<br>All dimensions in mm [in]<br>15.00<br>[0.591]<br>F 5.00<br>L  3.15A [0.197]<br>2.80<br>[0.112]<br>5.00<br>[0.197]<br>10.48 3.58<br>[0.413] [0.141]<br>6.00<br>[0.236]<br>**----- End of picture text -----**<br>


## **Recommended Pad Layout** 

**==> picture [506 x 45] intentionally omitted <==**

**----- Start of picture text -----**<br>
Packaging Option Form Factor Packaging Specification Quantity Quantity and Packaging Code<br>24mm Tape and Reel Surface Mount EIA-481 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 http://www.littelfuse.com/disclaimer-electronics. 

© 2026 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD. 05/05/26 

**3**

Updated at June 9, 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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