# Resettable Fuse, PPTC, MF-RX/250, 60 VDC, 120 mA, Rectangular

![Product image](https://novapart.co/image/farnell:1652193/)

**URL**: https://novapart.co/products/MF-RX012/250-0/resettable-fuse-pptc-mf-rx-250-60-vdc-120-ma
**SKU**: MF-RX012/250-0
**Manufacturer**: BOURNS
**Category**: Circuit Protection || Thermistors || Resettable Fuses || Radial Leaded PPTCs
**Price**: €0.2180
**Stock**: 10+

## Specifications

| Parameter | Value |
|---|---|
| Height | 11mm |
| Length | 6.5mm |
| Thickness | 4.6mm |
| Fuse Shape | Rectangular |
| Lead Spacing | 5.1mm |
| Product Range | MF-RX/250 |
| Voltage Rating | 60VDC |
| Holding Current | 120mA |
| Current Rating Max | 3A |
| Thermistor Mounting | Through Hole |
| Operating Temperature Max | 85°C |
| Operating Temperature Min | -40°C |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:1652193/)

## **Features** 

- Radial leaded devices 

- Fast tripping resettable PTCs 

- Binned and sorted narrow resistance ranges available 

## **Applications** 

   - Customer Premise Equipment (CPE) ■ Central Offi ce / Telecom Centers (CO) 

   - Access equipment 

- RoHS compliant* 

- Agency recognition: 

## **MF-RX/250 Series - Telecom PTC Resettable Fuses** 

~~**Electrical Characteristics**~~ 

**==> picture [506 x 207] intentionally omitted <==**

**----- Start of picture text -----**<br>
||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
|One Hour|
|Max.|Max. Interrupt|Hold Current|Initial Resistance|Post-Trip|
|Model|Operating|Ratings|Resistance|
|Voltage|Volts|Amps|Amps|Ohms|Ohms|Ohms|
|(Vdc)|(Vrms)|(A)|at 23 °C|at 23 °C|at 23 °C|at 23 °C|
|PP|es|Max.|Max.|IH|+|Min.|Max.|M|—|ax.|
|GG|MF-RX012/250|60|250|3.0|0.12|4.0|8.0|16.0|
|RQ|MF-RX012/250-A|60|250|GG|3.0|0.12|GG|7.0|9.0|16.0|
|QR|MF-RX012/250-C|60|250|GC|3.0|0.12|5.5|7.5|14.0|
|RG|MF-RX012/250-F|60|250|3.|GGG|0|0.12|6.0|10.5|16.0|
|QR|MF-RX012/250-1|60|250|GC|3.0|0.12|6.0|9.0|16.0|
|RG|MF-RX012/250-2|60|250|DG|3.0|0.12|8.0|10.5|16.0|
|GG|MF-RX012/250-T|60|250|3.0|0.12|7.0|12.0|16.0|
|Ge|MF-RX012/250U|60|250|GC|3.0|0.12|GO|6.0|10.0|16.0|
|RQ|MF-RX014/250|60|250|GG|3.0|0.145|3.0|6.0|14.0|
|GG|MF-RX014/250-A|60|250|3.0|0.145|3.0|5.5|12.0|
|Ge|MF-RX014/250-B|60|250|GC|3.0|0.145|GO|4.5|6.0|14.0|
|DQ|MF-RX014/250-T|60|250|GO|3.0|0.145|5.4|7.5|14.0|
|RG|MF-RX014/250U|60|250|3.|GOO|0|0.145|3.5|6.5|12.0|
|RQ|MF-RX018/250|60|250|GC|10.0|0.18|0.8|2.0|4.0|
|PO|MF-RX018/250U|60|250|10.0|0.18|0.8|2.0|4.0|

**----- End of picture text -----**<br>


“U” suffi x indicates product without insulation coating. 

## ~~**Environmental Characteristics**~~ 

Operating/Storage Temperature ........................... -40 °C to +85 °C Maximum Device Surface Temperature in Tripped State ................................................ 125 °C Passive Aging ....................................................... +85  °C, 1000 hours .............................................. ±15 % typical resistance change Humidity Aging...................................................... +85 °C, 85 % R.H. 1000 hours ............................. ±15 % typical resistance change Thermal Shock ..................................................... +125 °C to -55 °C,10 times ................................... ±15 % typical resistance change Solvent Resistance ............................................... MIL-STD-202, Method 215B ................................. No change Lead Solerability ................................................... ANSI/J-STD-002 ................................................... >95 % coverage Flammability ......................................................... IEC 695-2-2 .......................................................... No Flame for 60 secs. Vibration ............................................................... MIL-STD-883C, Method 2007.1, Condition A ....... ±5 % typical resistance change 

## ~~**Test Procedures And Requirements For Model MF-RX/250 Series**~~ 

**==> picture [438 x 78] intentionally omitted <==**

**----- Start of picture text -----**<br>
||||
|---|---|---|
|Test|Test Conditions|Accept/Reject Criteria|
|Visual/Mech. .................................................... Verify dimensions and materials .......................Per MF physical description|
|Resistance ....................................................... In still air @ 23 °C .............................................Rmin ≤ R ≤ Rmax|
|Time to Trip ...................................................... TTT current, Vmax, 23 °C .................................T ≤ max. time to trip (seconds)|
|Hold Current .................................................... 30 min. at Ihold .................................................No trip|
|Trip Cycle Life .................................................. 250 Vrms, 3A, 10 cycles ...................................No arcing or burning|
|UL File Number .......................................|..|....... E174545|
|TÜV File Number ............................................. 50260658|

**----- End of picture text -----**<br>


*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011. Specifi cations are subject to change without notice. The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time. Users should verify actual device performance in their specifi c applications. 

## **Additional Features** 

- Ability to withstand AC power cross conditions 

- Assists equipment with meeting ITU-T K.20/K.21/K.45 

- Assists equipment with meeting Telcordia GR-1089-C Intrabuilding 

## **MF-RX/250 Series - Telecom PTC Resettable Fuses** 

## ~~**Thermal Derating Chart - I**~~ **hold** ~~**(Amps)**~~ 

|**Model**|**Ambient Operating Temperature**|**Ambient Operating Temperature**|**Ambient Operating Temperature**|**Ambient Operating Temperature**|**Ambient Operating Temperature**|**Ambient Operating Temperature**|**Ambient Operating Temperature**|**Ambient Operating Temperature**|**Ambient Operating Temperature**|
|---|---|---|---|---|---|---|---|---|---|
||**-40 ºC**|**-20 ºC**|**0 ºC**|**23 ºC**|**40 ºC**|**50 ºC**|**60 ºC**|**70 ºC**|**85 ºC**|
|MF-RX012/250|0.186|0.165|0.143|0.120|0.099|0.088|0.077|0.066|0.050|
|MF-RX014/250|0.225|0.199|0.172|0.145|0.119|0.106|0.093|0.080|0.060|
|MF-RX018/250|0.269|0.240|0.211|0.180|0.153|0.138|0.123|0.109|0.087|



Itrip is approximately two times Ihold. 

## ~~**Product Dimensions**~~ 

|<br>**Model**||**A**<br>**Max.**||**B**<br>**Max.**||**C**<br>**Nom.**||**D**<br>**Min.**||**E**<br>**Max.**|**Physical Characteristics**|**Physical Characteristics**|**Physical Characteristics**|**Physical Characteristics**|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
||||||||||||**Lead Dia.**||<br>**Style**|**Material**|
|MF-RX012/250||6.5<br>(0.256)||11.0<br>(0.433)||5.1 ± 0.7<br>(0.201 ± 0.028)||4.7<br>(0.185)||4.6<br>(0.181)||0.65<br>(0.026)|1|Sn/Cu|
|MF-RX012/250U||6.0<br>(0.236)||10.0<br>(0.394)||5.1 ± 0.7<br>(0.201 ± 0.028)||4.7<br>(0.185)||3.8<br>(0.150)||0.65<br>(0.026)|2|Sn/Cu|
|MF-RX014/250||6.5<br>(0.256)||11.0<br>(0.433)||5.1 ± 0.7<br>(0.201 ± 0.028)||4.7<br>(0.185)||4.6<br>(0.181)||0.65<br>(0.026)|1|Sn/Cu|
|MF-RX014/250U||6.0<br>(0.236)||10.0<br>(0.394)||5.1 ± 0.7<br>(0.201 ± 0.028)||4.7<br>(0.185)||3.8<br>(0.150)||0.65<br>(0.026)|2|Sn/Cu|
|MF-RX018/250||11.0<br>(0.433)||13.6<br>(0.535)||5.1 ± 0.7<br>(0.201 ± 0.028)||4.7<br>(0.185)||4.6<br>(0.181)||0.65<br>(0.026)|1|Sn/Cu|
|MF-RX018/250U||10.4<br>(0.409)||12.6<br>(0.496)||5.1 ± 0.7<br>(0.201 ± 0.028)||4.7<br>(0.185)||3.8<br>(0.150)||0.65<br>(0.026)|2|Sn/Cu|



Packaging options: BULK: 500 pcs. per bag.     TAPE & REEL: 1500 pcs. per reel (available binned). 

MM DIMENSIONS: (INCHES) 

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**----- Start of picture text -----**<br>
Style 1  Style 2<br>A E A E<br>B B<br>D C<br>D C<br>**----- End of picture text -----**<br>


## ~~**Typical Part Marking**~~ 

Represents total content. Layout may vary. 

**==> picture [152 x 51] intentionally omitted <==**

**----- Start of picture text -----**<br>
MANUFACTURER'S<br>TRADEMARK PART<br>IDENTIFICATION<br>RX012<br>0 220 S<br>YEAR CODE<br>LOCATION CODE:<br>DATE CODE S = CHINA<br>**----- End of picture text -----**<br>


Specifi cations are subject to change without notice. The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time. Users should verify actual device performance in their specifi c applications. 

## **MF-RX/250 Series - Telecom PTC Resettable Fuses** 

## ~~**How to Order**~~ 

## ~~**Typical Time to Trip at 23 ˚C**~~ 

**MF - RX  012/250 U - A 5 - 2** 

Multifuse[®] Product Designator Series 

RX = Radial Leaded Component 

Hold Current, Ihold 008-018 (0.08-0.18 Amps) 

- Max. Interrupt Voltage, V 250 (250 Volts) 

- Telecom Options U = Uncoated (radial parts only) 

Resistance Sorted Narrow resistance ranges - see Resistance Options chart Resistance Bins of 0.5 ohms 

- 05 = 0.5 ohm binned parts (epoxy coated) 5 = 0.5 ohm binned parts (uncoated) 

Packaging Options 

**==> picture [321 x 179] intentionally omitted <==**

**----- Start of picture text -----**<br>
100<br>10<br>1<br>MF-RX018/250, MF-RX018/250U<br>MF-RX014/250 & MF-RX014/250U<br>0.10 MF-RX012/250 & MF-RX012/250U<br>0.01<br>0 0.5 1.0 1.5 2.0 2.5 3.0<br>Fault Current (Amps)<br>Time to Trip (Seconds)<br>**----- End of picture text -----**<br>


- 0 = Bulk Packaging 

- 2 = Tape and Reel* (available with binned option) 

*Packaged per EIA486-B 

## ~~**Resistance Options**~~ 

|**Model**|**Initial Resistance**<br>**Values**|**Initial Resistance**<br>**Values**|**R1max**|**Bin**|
|---|---|---|---|---|
||**Ohms @ 23 ° C**||**Ohms @ 23 ° C**||
||Min.|Max.|Max.||
|MF-RX012/250|4.0|8.0|16.0|N/A|
|MF-RX012/250-A05|7.0|9.0|16.0|0.5|
|MF-RX012/250-C05|5.5|7.5|14.0|0.5|
|MF-RX012/250-F05|6.0|10.5|16.0|0.5|
|MF-RX012/250-105|6.0|9.0|16.0|0.5|
|MF-RX012/250-205|8.0|10.5|16.0|0.5|
|MF-RX012/250-T05|7.0|12.0|16.0|0.5|
|MF-RX012/250U|6.0|10.0|16.0|N/A|
|MF-RX014/250|3.0|6.0|14.0|N/A|
|MF-RX014/250-A05|3.0|5.5|12.0|0.5|
|MF-RX014/250-B05|4.5|6.0|14.0|0.5|
|MF-RX014/250U|3.5|6.5|12.0|N/A|



MF-RX/250, REV. M, 09/15 

Specifi cations are subject to change without notice. The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time. Users should verify actual device performance in their specifi c applications. 

## **MF-RX/250 Series Tape and Reel Specifi cations** 

Devices taped using EIA468–B/IEC286-2 standards.  See table below and Figures 1 through 4 for details. 

|ices taped using EIA468–B/IEC286-2 standards.  See table below and Figures 1 through 4 for details.|ices taped using EIA468–B/IEC286-2 standards.  See table below and Figures 1 through 4 for details.|ices taped using EIA468–B/IEC286-2 standards.  See table below and Figures 1 through 4 for details.|ices taped using EIA468–B/IEC286-2 standards.  See table below and Figures 1 through 4 for details.|
|---|---|---|---|
|**IEC**<br>**EIA**<br>**Dimensions**<br>**Dimension Description**<br>**Mark**<br>**Mark**<br>**Dimensions**<br>**Tolerance**||||
|Carrier tape width<br>_W_<br>_W_|18<br>(.709)|-0.5/+1.0<br>(-0.02/+.039)||
|Hold down tape width<br>_W4_<br>_W0_|11<br>(.433)|min.||
|Hold down tape<br> <br>No|protrusion|||
|Top distance between tape edges<br>_W2_<br>_W6_|3<br>(.118)|max.||
|Sprocket hole position<br>_W1_<br>_W5_|9<br>(.354)|-0.5/+0.75<br>(-0.02/+0.03)||
|Sprocket hole diameter<br>_D0_<br>_D0_|4<br>(.157)||±0.2<br>(±.0078)|
|Abscissa to plane (straight lead)<br>_H_<br>_H_|18.5<br>(.728)||±3.0<br>(±.118)|
|Abscissa to plane (kinked lead)<br>_H0_<br>_H0_|16<br>(.63)||±0.5<br>(±.02)|
|Abscissa to top (straight lead)<br>_H1_<br>_H1_|38.0<br>(1.496)||max.|
|Abscissa to top (kinked lead)<br>_H1_<br>_H1_|32.2<br>(1.268)||max.|
|Overall width w/lead protrusion (straight lead)<br>_C1_|55.0<br>(2.165)||max.|
|Overall width w/lead protrusion (kinked lead)<br>_C1_|43.2<br>(1.7)||max.|
|Overall width w/o lead protrusion (straight lead)<br>_C2_|54.0<br>(2.126)||max.|
|Overall width w/o lead protrusion (kinked lead)<br>_C2_<br>|42.5<br>(1.673))||max.|
|Protrusion of cutout<br>_L_<br>_L_|11<br>(.433)||max.|
|Sprocket hole pitch<br>_P0_<br>_P0_|12.7<br>(0.5)||±0.3<br>(±.012)|
|Pitch tolerance<br>20|consecutive||±1<br>(±.039)|
|Device pitch|12.7<br>(0.5)||±0.3<br>(±.012)|
|Tape thickness<br>_t_<br>_t_|0.9<br>(.035)||max.|
|Tape thickness with splice<br>_t1_|1.5<br>(.059)||max.|
|Splice sprocket hole alignment|0||±0.3<br>(±.012)|
|Body lateral deviation<br>Δ_h_<br>Δ_h_|0||±1.0<br>(±.039)|
|Body tape plane deviation<br>Δ_p_<br>Δ_p_|0||±1.3<br>(±.051)|
|Lead spacing<br>_F_<br>_F_|5.08<br>(0.2)|||
|Reel width<br>_w_<br>_W2_|56.0<br>(2.205)||max.|
|Reel diameter<br>_d_<br>_a_|370.0<br>(14.57)||max.|
|Space between f anges less device<br>_W1_<br>_h_|4.75<br>(.187)||±3.25<br>(±.128)|
|Arbor hole diameter<br> _f_<br>_c_|26.0<br>(1.024)||±12.0<br>(±.472)|
|Core diameter<br> _h_<br>_n_|91<br>(3.58)||max.|
|Box<br>67<br>(2.64)|372<br>362<br>(14.6) (14.25)||max.|
|Consecutive missing places|none|||
|Empty places per reel|0.1 %|||



MM DIMENSIONS: (INCHES) 

Specifi cations are subject to change without notice. 

The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time. Users should verify actual device performance in their specifi c applications. 

## **MF-RX/250 Series Tape and Reel Specifi cations** 

**Taped Component Dimensions - Figure 1** 

**==> picture [477 x 175] intentionally omitted <==**

**----- Start of picture text -----**<br>
h h p p<br>Applies to Models:<br>MF-RX012/250U<br>Reference plane<br>MF-RX014/250U H1  P1 F H1<br>MF-RX018/250 H<br>MF-RX018/250U L A B W0H0 W1W<br>P0 D0 User direction of feed<br>Cross section A - B<br>t<br>**----- End of picture text -----**<br>


## **Reel Dimensions - Figure 2** 

**==> picture [503 x 121] intentionally omitted <==**

**----- Start of picture text -----**<br>
Figure 2<br>Reel<br>Applies to Models:<br>h Upper side<br>MF-RX012/250U Tape<br>User<br>MF-RX014/250U d direction<br>of<br>MF-RX018/250 feed Lower side<br>MF-RX018/250U f<br>h<br>w<br>**----- End of picture text -----**<br>


MM DIMENSIONS: (INCHES) 

Specifi cations are subject to change without notice. The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time. Users should verify actual device performance in their specifi c applications. 

## **MF-RX/250 Series Tape and Reel Specifi cations** 

## **Taped Component Dimensions - Figure 3** 

**==> picture [504 x 362] intentionally omitted <==**

**----- Start of picture text -----**<br>
h h p p<br>Applies to Models:<br>MF-RX012/250<br>Reference plane<br>MF-RX012/250-AMF-RX012/250-C H1  P1 H1<br>F<br>MF-RX012/250-F H<br>MF-RX012/250-1MF-RX012/250-2 L A B W0H0 W1W<br>MF-RX012/250-T<br>MF-RX014/250<br>MF-RX014/250-A P0 D0 User direction of feed<br>MF-RX014/250-B<br>MF-RX014-250-T Cross section A - B<br>t<br>Reel Dimensions -<br>Figure 4<br>Reel<br>Applies to Models:<br>h Upper side<br>MF-RX012/250 Tape<br>User<br>MF-RX012/250-A d direction<br>MF-RX012/250-C of<br>feed<br>MF-RX012/250-F Lower side<br>MF-RX012/250-1 f<br>MF-RX012/250-2<br>MF-RX012/250-T<br>h<br>MF-RX014/250 w<br>MF-RX014/250-A<br>MF-RX014/250-B<br>MM<br>MF-RX014-250-T DIMENSIONS: (INCHES)<br>**----- End of picture text -----**<br>


Specifi cations are subject to change without notice. The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time. Users should verify actual device performance in their specifi c applications. 



## Links

- [View this product on Novapart](https://novapart.co/products/MF-RX012/250-0/resettable-fuse-pptc-mf-rx-250-60-vdc-120-ma)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/en-ES/bourns/mf-rx012-250-0/multifuse-radial-0-12a-250v/dp/1652193)
---

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