MF-RX250 Bourns Inc., MF-RX250 Datasheet

MF-RX250

Manufacturer Part Number

MF-RX250

Description

FUSE PTC RESETTABLE 2.5A HOLD

Manufacturer

Bourns Inc.

Series

MF-RXr

Datasheet

1.MF-RX110.pdf (4 pages)

Specifications of MF-RX250

R Min/max

0.050 ~ 0.080 Ohm

Voltage - Max

60V

Time To Trip

15.6s

Current - Hold (ih) (max)

2.5A

Current - Trip (it)

Current - Max

40A

Package / Case

Radial

Holding Current

2.5A

Tripping Current

Initial Resistance Max

0.08ohm

Operating Voltage

60V

Ptc Fuse Case

Radial Lead

Initial Resistance Min

0.05ohm

Lead Spacing

10.2mm

External Depth

3.1mm

Rohs Compliant

Yes

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

MF-RX250

Manufacturer:

BOURNS

Quantity:

8 184

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

MF-RX250/72

Manufacturer:

BOURNS

Quantity:

8 226

Current page: 1 of 4
Download datasheet (277Kb)

Operating/Storage Temperature ........................-40 °C to +85 °C

Maximum Device Surface Temperature

Passive Aging......................................................+85 °C, 1000 hours ....................................±5 % typical resistance change

Humidity Aging....................................................+85 °C, 85 % R.H. 1000 hours....................±5 % typical resistance change

Thermal Shock ....................................................-40 °C to +85 °C,10 times ..........................±10 % typical resistance change

Solvent Resistance ............................................MIL-STD-202, Method 215 ........................No change

Vibration ..............................................................MIL-STD-883C, Method 2007.1, ................No change

Test

Visual/Mech. ......................................................Verify dimensions and materials..................Per MF physical description

Resistance ..........................................................In still air @ 23 °C ........................................Rmin ≤ R ≤ Rmax

Time to Trip ........................................................5 times Ihold, Vmax, 23 °C..........................T ≤ max. time to trip (seconds)

Hold Current ......................................................30 min. at Ihold............................................No trip

Trip Cycle Life ....................................................Vmax, Imax, 100 cycles ..............................No arcing or burning

Trip Endurance....................................................Vmax, 48 hours ..........................................No arcing or burning

UL File Number ..................................................E 174545S

CSA File Number ................................................CA 110338

TÜV File Number ................................................R2057213

Thermal Derating Chart - I hold / I trip (Amps)

in Tripped State ................................................125 °C

Electrical Characteristics

MF-RX110

MF-RX135

MF-RX160

MF-RX185

MF-RX250

MF-RX300

MF-RX375

MF-RX110

MF-RX135

MF-RX160

MF-RX185

MF-RX250

MF-RX300

MF-RX375

Environmental Characteristics

Test Procedures And Requirements For Model MF-RX Series

Model

0 1 8

X 1 1

V max.

0 T

Volts

1.71 / 3.42

2.09 / 4.18

2.48 / 4.96

2.87 / 5.74

3.88 / 7.76

4.65 / 9.30

5.81 / 11.6

-40 °C

Amps

I max.

1.50 / 3.00

1.84 / 3.68

2.18 / 4.36

2.52 / 5.04

3.40 / 6.80

4.08 / 8.16

5.10 / 10.2

-20 °C

Hold

I hold

1.10

1.35

1.60

1.85

2.50

3.00

3.75

Test Conditions

Condition A

MF-RX Series -

Features

1.31 / 2.62

1.61 / 3.22

1.90 / 3.80

2.20 / 4.40

2.98 / 5.96

3.57 / 7.14

4.46 / 8.92

Amperes

Radial Leaded Devices

Cured, flame retardant epoxy polymer

insulating material meets

UL 94V-0 requirements

Agency recognition:

RoHS compliant*

at 23 °C

0 °C

I trip

2.20

2.70

3.20

3.70

5.00

6.00

7.50

Trip

1.10 / 2.20

1.35 / 2.70

1.60 / 3.20

1.85 / 3.70

2.50 / 5.00

3.00 / 6.00

3.75 / 7.50

Ambient Operating Temperature

23 °C

Min.

0.15

0.12

0.09

0.08

0.05

0.04

0.03

Resistance

0.89 / 1.78

1.09 / 2.18

1.30 / 2.60

1.50 / 3.00

2.03 / 4.06

2.43 / 4.86

3.04 / 6.08

Initial

Ohms

at 23 °C

PTC Resettable Fuses

40 °C

Customers should verify actual device performance in their specific applications.

Max.

0.25

0.19

0.14

0.12

0.08

0.06

0.05

T V Rheinland

0.79 / 1.58

0.97 / 1.94

1.15 / 2.30

1.33 / 2.66

1.80 / 3.60

2.16 / 4.32

2.70 / 5.40

Accept/Reject Criteria

50 °C

1 Hour (R 1 )

Resistance

Post-Trip

at 23 °C

Ohms

*RoHS Directive 2002/95/EC Jan 27 2003 including Annex.

Max.

0.38

0.30

0.22

0.19

0.13

0.10

0.08

rated MF-RX/72 Series is preferred.

Specifications are subject to change without notice.

0.69 / 1.38

0.85 / 1.70

1.01 / 2.02

1.17 / 2.34

1.58 / 3.16

1.89 / 3.78

2.36 / 4.72

The MF-RX Series is currently

60 °C

Amperes

available, although not recommended

12.5

15.0

18.75

at 23 °C

for new designs. The higher voltage

5.5

6.75

8.0

9.25

Max. Time

To Trip

0.59 / 1.18

0.73 / 1.46

0.86 / 1.72

1.00 / 2.00

1.35 / 2.70

1.62 / 3.24

2.03 / 4.06

Seconds

70 °C

at 23 °C

11.4

12.6

15.6

19.8

24.0

8.2

9.6

0.44 / 0.88

0.54 / 1.08

0.64 / 1.28

0.74 / 1.48

1.00 / 2.00

1.20 / 2.40

1.50 / 3.00

Dissipation

at 23 °C

Tripped

Watts

85 °C

Power

1.50

1.70

1.90

2.10

2.50

2.80

3.20

Typ.

Related parts for MF-RX250

MF-RX250 Summary of contents

Page 1

... MF-RX135 2.09 / 4.18 1.84 / 3.68 MF-RX160 2.48 / 4.96 2.18 / 4.36 MF-RX185 2.87 / 5.74 2.52 / 5.04 MF-RX250 3.88 / 7.76 3.40 / 6.80 MF-RX300 4.65 / 9.30 4.08 / 8.16 MF-RX375 5.81 / 11.6 5.10 / 10.2 Features Radial Leaded Devices Cured, flame retardant epoxy polymer ...

Page 2

... MF-RX135 (0.571) (0.772) 16.3 21.3 MF-RX160 (0.642) (0.839) 17.8 22.9 MF-RX185 (0.701) (0.902) 21.3 26.4 MF-RX250 (0.839) (1.039) 24.9 30.0 MF-RX300 (0.980) (1.181) 28.4 33.5 MF-RX375 (1.118) (1.319) Packaging options: BULK: All models = 500 pcs. per bag. TAPE & REEL: MF-RX110 – MF-RX160 = 1500 pcs. per reel; MF-RX185 – MF-RX375 = 1000 pcs. per reel AMMO-PACK: MF-RX110 – ...

Page 3

... MF-R, MF-RX, MF-R/90, MF-RX/72 & MF-RX/250 Series Tape and Reel Specifications Devices taped using EIA468–B/IEC286-2 standards. See table below and Figures 1 and 2 for details. Dimension Description Carrier tape width Hold down tape width: all others Hold down tape Top distance between tape edges ...

Page 4

... MF-R, MF-RX, MF-R/90, MF-RX/72 & MF-RX/250 Series Tape and Reel Specifications Dimension Description Arbor hole diameter Core diameter: MF-R, MF-RX, MF-R/90 Box: MF-R, MF-RX, MF-R/90 Consecutive missing places: MF-R, MF-RX, MF-R/90 Empty places per reel: MF-R, MF-RX, MF-R/90 Taped Component Dimensions - Figure 1 ∆h ∆ ...

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