1245HC80-RTR

Technical Data ELX1000 Effective January 2021 

## 1245HC Fast-acting high current brick fuse 

## **Applications** 

Primary and secondary circuit protection: 

- Server and desktop power supplies 

- Energy storage systems 

- E-bikes 

- LED and general lighting 

- Power distribution units 

- Gaming console systems 

## **Product features** 

- 4818 (1245 metric) size 

- Fast-acting high current brick fuse 

- Compact design utilizes less board space 

   - Voltage Regulator Module (VRM) 

   - Point-of-load (POL) protection 

   - High power battery packs 

   - Storage system power 

   - Basic power supplies 

- Ceramic tube, silver plated brass end cap construction 

- Designed to UL248-1/14 

- Moisture sensitivity level (MSL): 1 

## **Agency information** 

cURus Recognition file number: E91958, Guide JFHR2/JFHR8 

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Environmental compliance<br>HALOGEN<br>Pb HF<br>FREE<br>SO Pols<br>Ordering part number<br>1245HC 60 -R TR<br>Family code<br>Ampere rating<br>RoHS conformity<br>Packaging code ll<br>**----- End of picture text -----**<br>


**Packaging prefix** TR (1000 parts on a 13” diameter tape and reel) 

1245HC Fast-acting high current brick fuse 

Technical Data ELX1000 Effective January 2021 

## **Electrical characteristics** 

|||**100% In**||**350% In**|
|---|---|---|---|---|
|**Amp Rating**<br>~~SS~~|~~SS~~|**minimum**<br>~~SS~~|~~SS~~|**maximum**<br>~~SS~~|
|60 A ~ 100 A||4 hours||10 seconds|



## **Product specifications** 

||**Current**<br>**rating**|**Voltage rating**|**Voltage rating**|**Interrupting rating**<br>**@ rated voltage1,2**|**Interrupting rating**<br>**@ rated voltage1,2**|**Typical**<br>**resistance**|**Typical**<br>**voltage drop**|**Typical pre-arcing3**||
|---|---|---|---|---|---|---|---|---|---|
|**Part number**|**(A)**|**(Vac)**|**(Vdc)**|**(A) Vac**|**(A) Vdc**|**(mΩ)**|**(mV)**|**I²t (A2s)**|**Part marking**|
||||804|||||||
|1245HC60-R|60|125|72<br>63|500|1000|0.58|65|950|60 A|
||||32|||||||
||||72|||||||
|1245HC80-R|80|125|63|500|1000|0.44|60|1700|80 A|
||||32|||||||
||||72|||||||
|1245HC100-R|100|125|63|500|1000|0.29|55|5000|100 A|
||||32|||||||



1. AC Interrupting rating (Measured at designated voltage, 100% power factor random closing) 

2. DC Interrupting rating (Measured at designated voltage, time constant of less than 50 microseconds, battery source) 

3. Typical pre-arcing I2t are measured at 10In Current, DC battery bank, but not exceeding the interrupting rating, time constant of calibrated circuit less than 50 microseconds) 

4. Internal qualification for 60 A @ 80 Vdc, UL Approval is pending 

**Dimensions- mm** Drawing not to scale 

## **Recommended pad layout** 

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Rating  L  W H<br>Oe]<br>60 A ~ 100 A 12.30 ± 0.40 2.70 ± 0.20 4.50 ± 0.20<br>**----- End of picture text -----**<br>


60 A - 70 A: Recommend trace thickness is 3 oz; the minimum trace width is 22 mm 80 A - 100 A: Recommend trace thickness is 6 oz; the minimum trace width is 33 mm Recommended stencil thickness is 0.15 mm 

## **General specifications** 

Operating temperature: -55 °C to +125 °C with proper derating factor applied 

Thermal shock: MIL-STD-202,Method 107G -55 °C/+125 °C. Note: Number of cycles required 100 times Humidity bias: MIL-STD-202, Method 103 +85 °C/85% RH, 1000 hours Mechanical shock: Figure 1 of Method 213. Condition C, 100 g, 6 ms Mechanical vibration: MIL-STD-202G, Method 20, 2 hours each of 3 orientations. Test from 10-55 Hz in 1 minute Resistance to solder heat: MIL-STD-202G Method 210F, condition D (+260 °C,10 s) 

Solderability test: J-STD-002, Method B1 Steam aging 1 hour, Solder temperature +255 ± 5 °C,solder immersion time 5 s High temperature operating life: MIL-STD-202 Method 108 Condition D, Steady state TA= +70 °C at 60% rated current 

2 

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Technical Data ELX1000 Effective January 2021 

1245HC Fast-acting high current brick fuse 

## **Packaging information - mm** 

1000 parts per 13” diameter reel 

|**Dimension**<br>**millimeter**<br>W<br>24.00<br>~~a~~|
|---|
|F<br>11.50<br>E1<br>1.75<br>~~a~~|
|E2<br>N/A|
|P0<br>4.00<br>~~—~~|
|P1<br>8.00|
|P2<br>2.00|
|DO<br>1.50|
|D1<br>1.50<br>A0<br>4.85<br>~~TE~~|
|~~——~~|
|B0<br>12.75<br>~~a~~|
|K0<br>4.90|
|T<br>0.40|



## **Reel dimension- mm** 

|w3<br>=|—||
|---|---|---|
|w3<br>=<br>at outer edge.|—|**Dimension**<br>**millimeter**<br>A<br>330 ± 1|
|||B<br>2.5 ± 0.2|
|||C<br>13.5 ± 0.2<br>~~a~~|
|Measured @hub <br>wi<br>Measured@hub||D<br>N/A<br>N<br>100 ± 0.5<br>W1<br>24.8 + -.5/-0.5<br>W2<br>30.4 max<br>W3<br>N/A<br> ~~a~~<br>~~a~~<br>~~a~~<br>~~a~~|



3 

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1245HC Fast-acting high current brick fuse 

Technical Data ELX1000 Effective January 2021 

## **Temperature derating curve** 

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Derating factor (%)<br>**----- End of picture text -----**<br>


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Temperature (°C)<br>**----- End of picture text -----**<br>


## **Current vs. time curve** 

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Time (seconds)<br>**----- End of picture text -----**<br>


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Current (A)<br>**----- End of picture text -----**<br>


4 

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Technical Data ELX1000 Effective January 2021 

1245HC Fast-acting high current brick fuse 

## **Wave solder profile** 

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tp<br>Tp<br>First Wave Second Wave<br>Tsmax<br>Tstyp<br>Tsmin<br>Preheat area Cool down area<br>Temperature<br>**----- End of picture text -----**<br>


**Time** 

## **Reference EN 61760-1:2006** 

|**Profile feature**|||**Standard SnPb solder**||**Lead (Pb) free solder**|
|---|---|---|---|---|---|
|Preheat|• Temperature min. (Tsmin)||100 °C||100 °C|
||• Temperature typ. (Tstyp)||120 °C||120 °C|
||• Temperature max. (Tsmax)||130 °C||130 °C|
||• Time (Tsminto Tsmax) (ts)||70 seconds||70 seconds|
|D preheat tomax Temperature|||150 °C max.||150 °C max.|
|Peak temperature (TP)*|||235 °C – 260 °C||250 °C – 260 °C|
|Time at peak temperature (tp)|||10 seconds max<br>5 seconds max each wave||10 seconds max<br>5 seconds max each wave|
|Ramp-down rate|||~ 2 K/s min||~ 2 K/s min|
||||~3.5 K/s typ||~3.5 K/s typ|
||||~5 K/s max||~5 K/s max|
|Time 25 °C to 25 °C|||4 minutes||4 minutes|



## **Manual solder** 

+350 °C (4-5 seconds by soldering iron), generally manual/hand soldering is not recommended. 

5 

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1245HC Fast-acting high current brick fuse 

Technical Data ELX1000 Effective January 2021 

## **Solder reflow profile** 

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TP<br>TC -5°C<br>Max. Ramp Up Rate = 3°C/s tP<br>Max. Ramp Down Rate = 6°C/s<br>TL Preheat t |<br>ee" A<br>Tsmax<br>Tsmin<br>   ts<br>25°C<br>Time 25°C to Peak  Time<br>Temperature<br>**----- End of picture text -----**<br>


## **Table 1 - Standard SnPb solder (Tc)** 

|**Package**<br>**thickness**<br>**Volume**<br>**mm3**<br>**<350**<br>**Volume**<br>**mm3**<br>**≥350**|
|---|
|<2.5 mm<br>235 °C<br>220 °C<br>≥2.5 mm<br>220 °C<br>220 °C<br>~~a~~|



## **Table 2 - Lead (Pb) free solder (Tc)** 

|**Package**<br>**thickness**||**Volume**<br>**mm3**<br>**<350**||**Volume**<br>**mm3**<br>**350 - 2000**||**Volume**<br>**mm3**<br>**>2000**|
|---|---|---|---|---|---|---|
|<1.6 mm||260 °C||260 °C||260 °C|
|1.6 – 2.5 mm||260 °C||250 °C||245 °C|
|>2.5 mm||250 °C||245 °C||245 °C|



## **Reference J-STD-020** 

|**Profile feature**||**Standard SnPb solder**||**Lead (Pb) free solder**|
|---|---|---|---|---|
|Preheat and soak     • Temperature min. (Tsmin)||100 °C||150 °C|
|• Temperature max. (Tsmax)||150 °C||200 °C|
|• Time (Tsminto Tsmax) (ts)||60-120 seconds||60-120 seconds|
|Ramp up rate TLto Tp||3 °C/ second max.||3 °C/ second max.|
|Liquidous temperature (Tl)||183 °C||217 °C|
|Time (tL) maintained above TL||60-150 seconds||60-150 seconds|
|Peak package body temperature (TP)*||Table 1||Table 2|
|Time (tp)* within 5 °C of the specified classification temperature (Tc)||20 seconds*||30 seconds*|
|Ramp-down rate (Tpto TL)||6 °C/ second max.||6 °C/ second max.|
|Time 25 °C to peak temperature||6 minutes max.||8 minutes max.|



* Tolerance for peak profile temperature (Tp) is defined as a supplier minimum and a user maximum. 

Life Support Policy: Eaton does not authorize the use of any of its products for use in life support devices or systems without the express written approval of an officer of the Company. Life support systems are devices which support or sustain life, and whose failure to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in significant injury to the user. 

Eaton reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of any products. Eaton also reserves the right to change or update, without notice, any technical information contained in this bulletin. 

**Eaton Electronics Division** 1000 Eaton Boulevard Cleveland, OH 44122 United States Eaton.com/electronics © 2021 Eaton All Rights Reserved Printed in USA Publication No. ELX1000 BU-ELX21001 January 2021 

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