TR2/6125FF8-R

Technical Data 

**4326** 

Effective January 2023 Supersedes December 2015 

## 6125FF Fast-acting subminiature fuses 

## **Applications** 

- Power supplies 

- Servers 

- LED/LCD televisions 

- Appliances and white goods 

- LCD monitor/backlight inverters 

- Laptops and notebooks 

## **Agency information** 

- cURus Recognition file number: E19180, Guide JDYX2/JDYX8 

## **Ordering** 

## **Product description** 

- Fast-acting surface mount fuse 

Specify part number and packaging prefix as shown Packaging prefix Part number TR26125FF1-R 

- Overcurrent protection of systems up to 125Vac/72Vdc 

- High inrush withstand capability 

- Solder immersion compatible 

## **Packaging prefixes** 

- TR2- (Tape and reel, 5000 parts per 13” diameter reel) 

## Discontinued. Last time buy is July 31, 2023. Discontinued. Last time buy is July 31, 2023. 

> Recommended replacement is 2410FA data sheet (ELX1196) Recommended replacement is 2410FA data sheet (ELX1 196) 

## or CB61F data sheet (4357) or CB61F data sheet (4357) 

6125FF Fast-acting subminiature fuses 

Technical Data 4326 Effective January 2023 

## **Electrical characteristics** 

|**% of Amp Rating**||**Opening Time**|
|---|---|---|
|100%||4 Hours Minimum|
|200%||5 Second Maximum|



## **Product specifications** 

|**Product specifications**||
|---|---|
|**Part Number3**<br>**Current rating**<br>**(amps)**|**Voltage rating**<br>**Interrupting rating1 (amps)**<br>**DC cold**<br>**resistance**<br>**(m**Ω**) Typ.**<br>**Melting2**<br>**I2t**<br>**(A2 second)**<br>**Typical**<br>**voltage**<br>**drop (mV)**<br>**Vac**<br>**Vdc**<br>**125Vac**<br>**72Vdc**<br>**32Vdc**|
|6125FF500-R<br>500mA|125<br>72<br>50<br>50<br>300<br>750<br>0.08<br>605|
|6125FF750-R<br>750mA|125<br>72<br>50<br>50<br>300<br>350<br>0.152<br>433|
|6125FF1-R<br>1|125<br>72<br>50<br>50<br>300<br>260<br>0.22<br>415|
|6125FF1.25-R<br>1.25|125<br>72<br>50<br>50<br>300<br>171<br>0.355<br>410|
|6125FF1.5-R<br>1.5|125<br>72<br>50<br>50<br>300<br>112<br>0.456<br>365|
|6125FF2-R<br>2|125<br>72<br>50<br>50<br>300<br>49<br>1.67<br>160|
|6125FF2.5-R<br>2.5|125<br>72<br>50<br>50<br>300<br>45<br>5.20<br>155|
|6125FF3-R<br>3|125<br>72<br>50<br>50<br>300<br>35<br>6.24<br>153|
|6125FF3.5-R<br>3.5|125<br>72<br>50<br>50<br>300<br>27<br>7.28<br>150|
|6125FF4-R<br>4|125<br>72<br>50<br>50<br>300<br>26<br>7.4<br>145|
|6125FF5-R<br>5|125<br>72<br>50<br>50<br>300<br>17<br>9.5<br>141|
|6125FF6.3-R<br>6.3|125<br>72<br>50<br>50<br>300<br>14<br>15.1<br>135|
|6125FF7-R<br>7|125<br>72<br>50<br>50<br>300<br>11<br>37.25<br>112|
|6125FF8-R<br>8|125<br>72<br>50<br>50<br>300<br>8.7<br>70<br>110|
|6125FF10-R<br>10|125<br>72<br>50<br>50<br>300<br>7.3<br>67.75<br>110|
|6125FF12-R<br>12|125<br>72<br>50<br>50<br>300<br>5.3<br>210.59<br>106|
|6125FF15-R<br>15|125<br>72<br>50<br>50<br>300<br>4.2<br>296.10<br>104|



1 AC Interrupting Rating (Measured at designated voltage, 100% power factor); DC Interrupting Rating (Measured at designated voltage, time constant of less than 50 microseconds, battery source) 2 Typical Melting I[2] t (Measured at 72Vdc, 10X rated current (not exceed 50A - IR @ 72Vdc) 3 Part number definition: 6125FFxxx-R 

6125FF= Product code and size 

xxx= Ampere 

-R= RoHS compliant 

## Discontinued. Last time buy is July 31, 2023. 

## **Dimensions–mm (in)** 

## **Recommended pad layout–mm (in)** 

**==> picture [570 x 107] intentionally omitted <==**

**----- Start of picture text -----**<br>
2.72±0.15<br>(0.107±0.006) Recommended replacement is  1.35 (0.102)2.6 2410FA data sheet (ELX1196)  (0.118)3.0<br>(0.053) [TYP.]<br>4.0<br>(0.157)<br>8.6<br>or CB61F data sheet (43 57)<br>(0.338)<br>6.10±0.20<br>2.72±0.15 (0.24±0.008)<br>(0.107±0.006)<br>**----- End of picture text -----**<br>


www.eaton.com/elx 

2 

6125FF Fast-acting subminiature fuses 

Technical Data 4326 Effective January 2023 

**Time vs. current curve** 

CURRENT IN AMPS 

**==> picture [477 x 106] intentionally omitted <==**

**----- Start of picture text -----**<br>
Discontinued. Last time buy is July 31, 2023.<br>cost} | TTT TT TTT AT TT AATAAA os<br>weSe es a a ee eee a nn EE po<br>ees rTEEEANANTHps<br>cosANTet iie t titt T P TT TTT PNA TIN A LDLTATA a02<br>.PC Recommended replacement is 2410FA data sheet (ELX1196)  TEUIEE CIE CL CLHICENICTEENIE CANINCANAAN LTEETE. LU<br>* * 2 t Pengen sn + Derseg R 8 ¥ FSRSBS 8 8 8888888<br>CURRENT IN AMPS<br>**----- End of picture text -----**<br>


or CB61F data sheet (4357) 

> www.eaton.com/elx 3 

6125FF Fast-acting subminiature fuses 

Technical Data 4326 Effective January 2023 

## **Temperature derating curve** 

**==> picture [367 x 226] intentionally omitted <==**

**----- Start of picture text -----**<br>
125.00<br>120.00<br>115.00<br>110.00<br>105.00<br>100.00<br>95.00<br>90.00<br>85.00<br>80.00<br>-25.0 0.0 24.0 50.0 85.0 105.0 125.0<br>Temperature (°C)<br>Percentage of Rating<br>**----- End of picture text -----**<br>


## **Environmental data** 

Operating temperature: -55°C to 125°C (with derating) 

Storage temperature: -55°C to 125°C Mechanical shock: MIL- STD- 202, method 213 High frequency vibration: MIL- STD- 202, method 204 Load humidity: MIL- STD- 202, method 103 Moisture resistance: MIL- STD- 202, method 106 Resistance to solvents: MIL- STD- 202, method 215 

> Thermal shock: MIL- STD- 202, Method 107 ~~Discontinued. Last t~~ ime buy is July 31, 2023. 

Recommended replacement is 2410FA data sheet (ELX1196) 

## or CB61F data sheet (4357) 

www.eaton.com/elx 

4 

6125FF Fast-acting subminiature fuses 

Technical Data 4326 Effective January 2023 

## **Solder Reflow Profile** 

||||||||||
|---|---|---|---|---|---|---|---|---|
|**Temperature**<br>25°C<br>TL<br>TP|||Preheat<br>A<br>Max. Ramp Up Rate = 3°C/s<br>Max. Ramp Down Rate = 6°C/s|||t<br>tP<br>TC-5°|C|**Table 1 - Standard SnPb Solder (Tc)**<br>**Package**<br>**Thickness**<br>**Volume**<br>**mm3**<br>**<350**<br>**Volume**<br>**mm3**<br>≥**350**<br><2.5mm)<br>235°C<br>220°C<br>≥2.5mm<br>220°C<br>220°C<br>**Table 2 - Lead (Pb) Free Solder (Tc)**<br>**Package**<br>**Thickness**<br>**Volume**<br>**mm3**<br>**<350**<br>**Volume**<br>**mm3**<br>**350 - 2000**<br>**Volume**<br>**mm3**<br>**>2000**|
|||||Max. Ramp Up Rate = 3°C/s<br>Max. Ramp Down Rate = 6°C/s|||||
||Tsmax||||||||
||||||||||
||Tsmin||||||||
|||Tsmin|||||||
||||||||||
|||||||||<1.6mm<br>260°C<br>260°C<br>260°C|
|||||||||1.6 – 2.5mm<br>260°C<br>250°C<br>245°C|
|||||||||>2.5mm<br>250°C<br>245°C<br>245°C|
||||||||||
||||||||||



## **Reference JDEC J-STD-020D** 

|**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|
|Average ramp up rate Tsmaxto Tp||3°C/ Second Max.||3°C/ Second Max.|
|Liquidous temperature (Tl)||183°C||217°C|
|Time at liquidous (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**|
|Average ramp-down rate (Tpto Tsmax)||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. 

** Tolerance for time at peak profile temperature (tp) is defined as a supplier minimum and a user maximum. Discontinued. Last time buy is July 31, 2023. 

Recommended replacement is 2410FA data sheet (ELX1196) 

## or CB61F data sheet (4357) 

www.eaton.com/elx 

5 

6125FF Fast-acting subminiature fuses 

Technical Data 4326 Effective January 2023 

## **Wave solder profile** 

|**Reference EN 61760-1:2006**<br>**Profile feature**<br>Tsmin<br>Tsmax<br>Tstyp<br>Tp<br>**Temperature**|tp<br>First Wave<br>Second Wave<br>Preheat area<br>Cool down area|
|---|---|
||**Standard SnPb solder**<br>**Time**|
|Preheat and soak   • Temperature min. (Tsmin)<br>100°C||
|• Temperature typ. (Tstyp)<br>120°C||
|• Temperature max. (Tsmax)<br>130°C||
|• Time max. (Tsmin to Tsmax) (ts)<br>70 Seconds||
|∆preheat to max Temeperature<br>150°C max.||
|Peak temperature (Tp)<br>235°C - 260°C||
|Peak package body temperature (TP)*<br>Table 1||
|Time at peak temperature (tp)<br>10 seconds max<br>5 seconds max each wave||



## Recommended replacement is 2410FA data sheet (ELX1196) 

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 or CB61F data sheet (4357) 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 www.eaton.com/elx 

© 2023 Eaton All Rights Reserved Printed in USA Publication No. 4326 January 2023 

Eaton is a registered trademark. All other trademarks are property of their respective owners.