C308F125MA-TR1

Effective March 2019 Supersedes August 2018 

Technical Data **4405** 

## C308F 

## 3 mm x 8.4 mm fast-acting, ceramic tube fuses for hazardous applications 

## **Agency information** 

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

## **Applications** 

- Hazardous environments 

- Petrochemical processing and refining equipment 

- Pulp and paper processing equipment 

- Intrinsically safe network barriers 

## **Packaging** 

- Specify part number and packaging suffix. 

- Package suffixes: 

## _Ferrule_ 

## **Product features** 

A compact 3 mm x 8.4 mm fuse provides a space saving alternative to conventional fuse solutions with high interrupting rating for primary and secondary circuit protection up to 250 Vac/dc and 250 mA 

- Meets electrical perfomance specifications for intrinsically safe (EN60079-11) applications 

- Fast-acting, high interrupting rating of 4000 A at 250 Vac/dc 

- Ceramic tube, silver plated brass end cap construction 

- -TR (500 fuses on tape and reel) 

- -TR1 (1000 fuses on tape and reel) 

## _Axial leaded_ 

- TR1 (axial leaded version, 1500 fuses on tape and reel) 

## **Ordering** 

   - Specify part number and packaging suffix (e.g., C308F-V-160mA-TR1) 

- Optional axial leads (tinned copper axial leads construction) 

- RoHS compliant 

C308F 

Technical Data 4405 Effective March 2019 

3 mm x 8.4 mm fast-acting, ceramic tube fuses for hazardous applications 

## **Product specifications** 

|**Part number**|**Part number**|**Voltage**<br>**rating**<br>**Vac/dc**|**Color**<br>**coding**|**Interrupting**<br>**rating @ 250**<br>**Vac/dc (A)***|**Typical DC**<br>**cold resistance**<br>**(Ω)****|**Typical**<br>**melting**<br>**I²T*****|**Agency**<br>**Information**<br>**cURus**|
|---|---|---|---|---|---|---|---|
|**Ferrule**|**Axial lead**|||||||
|C308F40mA|C308F-V-40mA|250|Grey|4000|14.2|0.00006|X|
|C308F50mA|C308F-V-50mA||Red||9.40|0.00010|X|
|C308F63mA|C308F-V-63mA||Pink||8.80|0.00012|X|
|C308F80mA|C308F-V-80mA||Green||5.10|0.00018|X|
|C308F100mA|C308F-V-100mA||Yellow||2.87|0.00087|X|
|C308F125mA|C308F-V-125mA||Orange||2.20|0.00134|X|
|C308F160mA|C308F-V-160mA||Violet||2.05|0.00166|X|
|C308F200mA|C308F-V-200mA||Brown||1.01|0.00237|X|
|C308F250mA|C308F-V-250mA||Black||0.71|0.00530|X|



* AC Interrupting Rating (4000 A, PF = 0.4); DC Interrupting Rating measured at rated voltage, time constant 4 microseconds, battery source. 

- ** DC Cold Resistance (Measured at ≤10% of rated current). 

*** Typical I[2] t measured at 10In. 

## **Electrical characteristics** 

|**Amp Rating**|**% of Amp Rating**|**Opening Time**|
|---|---|---|
|40 mA ~ 250 mA|110%|4 hours, min|
||300%|10 seconds, max|
||1000%|0.002 seconds, max|



## **Environmental data** 

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

- Thermal Shock: MIL-STD-202G, Method 107G (Test Condition 5 cycles -55 °C to 125 °C) 

- Resistance to Solder Heat: MIL-STD-202G Method 210F 

- Vibration: MIL-STD-202G, Method 201A (10 Hz to 55 Hz) Condition A, “-V” axial leaded version IEC60068-2-6 

- Solderability: J-STD-002C, Test Method C1, “-V” axial leaded version IEC60127-2/A3.3 

- Component Life Reliability: +125 °C, 500 hours 

## **Dimensions–mm** 

2 

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C308F 

Technical Data 4405 Effective March 2019 

3 mm x 8.4 mm fast-acting, ceramic tube fuses for hazardous applications 

## **Average time-current curves** 

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**Temperature derating curve** 

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**Temperature (°C)** 

3 

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C308F 

Technical Data 4405 Effective March 2019 

3 mm x 8.4 mm fast-acting, ceramic tube fuses for hazardous applications 

## **Surface mounting soldering parameters (Ferrule)** 

- Reflow solder: JEDEC J-STD-020 Tc = 250°C. Tp = 30s 

- Wave and manual solder is not recommended 

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TP Table 1 - Standard SnPb Solder (Tc)<br>TC -5°C<br>Max. Ramp Up Rate = 3°C/s tP Package   Volume  mm3   Volume  mm3<br>Max. Ramp Down Rate = 6°C/s Thickness <350 ≥350<br>TL <2.5mm) 235°C 220°C<br>Preheat t ≥2.5mm 220°C 220°C<br>A<br>Tsmax<br>Table 2 - Lead (Pb) Free Solder (Tc)<br>Volume   Volume   Volume<br>Tsmin Package  Thickness mm<350 [3] mm350 - 2000 [3] mm>2000 [3]<br>   ts<br><1.6mm 260°C 260°C 260°C<br>1.6 – 2.5mm 260°C 250°C 245°C<br>>2.5mm 250°C 245°C 245°C<br>25°C<br>Time 25°C to Peak  Time<br>Temperature<br>**----- End of picture text -----**<br>


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



## **Reference JDEC 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 (Tsmin to Tsmax) (ts)||60-120 Seconds||60-120 Seconds|
|Average ramp up rate Tsmax to 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. 

4 

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C308F 

Technical Data 4405 Effective March 2019 

3 mm x 8.4 mm fast-acting, ceramic tube fuses for hazardous applications 

## **Through hole wave solder profile (Axial lead)** 

Reflow soldering not recommended 

|**Reference EN 61760-1:2006**<br>**Profile Feature**<br>**Temperature**<br>Tsmin<br>Tsmax<br>Tstyp<br>Tp|tp<br>First Wave<br>Second Wave<br>Preheat area<br>Cool down area|tp<br>First Wave<br>Second Wave<br>Preheat area<br>Cool down area|
|---|---|---|
||**Time**||
|Preheat                    • Temperature min. (Tsmin)||100°C<br>100°C|
|• Temperature typ. (Tstyp)||120°C<br>120°C|
|• Temperature max. (Tsmax)||130°C<br>130°C|
|• Time (Tsmin to Tsmax) (ts)||70 seconds<br>70 seconds|
|D preheat tomax Temperature||150°C max.<br>150°C max.|
|Peak temperature (TP)*||235°C – 260°C<br>250°C – 260°C|
|Time at peak temperature (tp)||10 seconds max<br>5 seconds max each wave<br>10 seconds max<br>5 seconds max each wave|
|Ramp-down rate||~ 2 K/s min<br>~3.5 K/s typ<br>~5 K/s max<br>~ 2 K/s min<br>~3.5 K/s typ<br>~5 K/s max|
|Time 25°C to 25°C||4 minutes<br>4 minutes|



## **Manual solder** 

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

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 www.eaton.com/electronics © 2019 Eaton All Rights Reserved Printed in USA Publication No. 4405 — BU-MC15048 March 2019 

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