# CARTRIDGE FUSE, FAST ACTING, 0.04A, 250V
**URL**: https://novapart.co/products/C308F40MA-TR/cartridge-fuse-fast-acting-004a-250v
**SKU**: C308F40MA-TR
**Manufacturer**: EATON ELECTRONICS
**Category**: Circuit Protection || Fuses & Fuse Accessories || Fuses || Cartridge Fuses
**Price**: €6.4900
**Stock**: 200+
**Lead Time**: 118 days (indicative)
## Description
Blow Characteristic:Fast Acting; Fuse Current:40mA; Voltage Rating VAC:250V; Fuse Size Metric:3mm x 8.4mm; Fuse Size Imperial:0.118" x 0.331"; Product Range:C 31AJ3555
## Specifications
| Parameter | Value |
|---|---|
| Fuse Current | 40mA |
| Product Range | C308F Series |
| Fuse Size Metric | 3mm x 8.4mm |
| Fuse Size Imperial | 0.118" x 0.331" |
| Voltage Rating Vac | 250V |
| Blow Characteristic | Fast Acting |
| Breaking Capacity Current Ac | 4kA |
## Datasheet
📄 [Download PDF](https://novapart.co/datasheet/farnell:3779717/)
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**
**rating**
**Vac/dc**|**Color**
**coding**|**Interrupting**
**rating @ 250**
**Vac/dc (A)***|**Typical DC**
**cold resistance**
**(Ω)****|**Typical**
**melting**
**I²T*****|**Agency**
**Information**
**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
www.eaton.com/electronics
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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Time (s)
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Current (A)
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**Temperature derating curve**
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**Temperature (°C)**
3
www.eaton.com/electronics
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
**==> picture [536 x 184] intentionally omitted <==**
**----- Start of picture text -----**
TP Table 1 - Standard SnPb Solder (Tc)
TC -5°C
Max. Ramp Up Rate = 3°C/s tP Package Volume mm3 Volume mm3
Max. Ramp Down Rate = 6°C/s Thickness <350 ≥350
TL <2.5mm) 235°C 220°C
Preheat t ≥2.5mm 220°C 220°C
A
Tsmax
Table 2 - Lead (Pb) Free Solder (Tc)
Volume Volume Volume
Tsmin Package Thickness mm<350 [3] mm350 - 2000 [3] mm>2000 [3]
ts
<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
25°C
Time 25°C to Peak Time
Temperature
**----- End of picture text -----**
|**Package**
**Thickness**||**Volume**
**mm3**
**<350**||**Volume**
**mm3**
**350 - 2000**||**Volume**
**mm3**
**>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
www.eaton.com/electronics
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**
**Profile Feature**
**Temperature**
Tsmin
Tsmax
Tstyp
Tp|tp
First Wave
Second Wave
Preheat area
Cool down area|tp
First Wave
Second Wave
Preheat area
Cool down area|
|---|---|---|
||**Time**||
|Preheat • Temperature min. (Tsmin)||100°C
100°C|
|• Temperature typ. (Tstyp)||120°C
120°C|
|• Temperature max. (Tsmax)||130°C
130°C|
|• Time (Tsmin to 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
5 seconds max each wave
10 seconds max
5 seconds max each wave|
|Ramp-down rate||~ 2 K/s min
~3.5 K/s typ
~5 K/s max
~ 2 K/s min
~3.5 K/s typ
~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.
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
Eaton is a registered trademark. All other trademarks are property of their respective owners.
## Links
- [View this product on Novapart](https://novapart.co/products/C308F40MA-TR/cartridge-fuse-fast-acting-004a-250v)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/eaton-electronics/c308f40ma-tr/cartridge-fuse-fast-acting-0-04a/dp/3779717)
---
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