MF-RX300-0-014 - Bourns, Inc.

Specifications are subject to change without notice.Specifications are subject to change without notice.

MF-RX Series - PTC Resettable Fuses

X110

0180T

Electrical Characteristics

Features

■Radial Leaded Devices

■Cured, flame retardant epoxy polymer

insulating material meets

UL 94V-0 requirements

■Bulk packaging, tape and reel and Ammo-

Pak available on most models

■Agency recognition:

Applications

Almost anywhere there is a low voltage

power supply, up to 60V and a load to be

protected, including:

■Security and fire alarm systems

■Loud speakers

■Power transformers

1 Hour (R1)Max. Time Tripped

Ihold Itrip Initial Post-Trip To Trip Power

Resistance Resistance Dissipation

Model Amperes Ohms Ohms Amperes Seconds Watts

V max. I max.

at 23°C at 23°C at 23°C at 23°C at 23°C at 23°C

Volts Amps

Hold Trip Min. Max. Max. Typ.

MF-RX110 60 40 1.10 2.20 0.15 0.25 0.38 5.5 8.2 1.50

MF-RX135 60 40 1.35 2.70 0.12 0.19 0.30 6.75 9.6 1.70

MF-RX160 60 40 1.60 3.20 0.09 0.14 0.22 8.0 11.4 1.90

MF-RX185 60 40 1.85 3.70 0.08 0.12 0.19 9.25 12.6 2.10

MF-RX250 60 40 2.50 5.00 0.05 0.08 0.13 12.5 15.6 2.50

MF-RX300 60 40 3.00 6.00 0.04 0.06 0.10 15.0 19.8 2.80

MF-RX375 60 40 3.75 7.50 0.03 0.05 0.08 18.75 24.0 3.20

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

Maximum Device Surface Temperature

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

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....................................................+125°C to -55°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

Condition A

Environmental Characteristics

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 ........................................................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

Test Procedures And Requirements For Model MF-RX Series

Thermal Derating Chart - Ihold / Itrip (Amps)

Ambient Operating Temperature

Model -40˚C -20˚C 0˚C 23˚C 40˚C 50˚C 60˚C 70˚C 85˚C

MF-RX110 1.71 / 3.42 1.50 / 3.00 1.31 / 2.62 1.10 / 2.20 0.89 / 1.78 0.79 / 1.58 0.69 / 1.38 0.59 / 1.18 0.44 / 0.88

MF-RX135 2.09 / 4.18 1.84 / 3.68 1.61 / 3.22 1.35 / 2.70 1.09 / 2.18 0.97 / 1.94 0.85 / 1.70 0.73 / 1.46 0.54 / 1.08

MF-RX160 2.48 / 4.96 2.18 / 4.36 1.90 / 3.80 1.60 / 3.20 1.30 / 2.60 1.15 / 2.30 1.01 / 2.02 0.86 / 1.72 0.64 / 1.28

MF-RX185 2.87 / 5.74 2.52 / 5.04 2.20 / 4.40 1.85 / 3.70 1.50 / 3.00 1.33 / 2.66 1.17 / 2.34 1.00 / 2.00 0.74 / 1.48

MF-RX250 3.88 / 7.76 3.40 / 6.80 2.98 / 5.96 2.50 / 5.00 2.03 / 4.06 1.80 / 3.60 1.58 / 3.16 1.35 / 2.70 1.00 / 2.00

MF-RX300 4.65 / 9.30 4.08 / 8.16 3.57 / 7.14 3.00 / 6.00 2.43 / 4.86 2.16 / 4.32 1.89 / 3.78 1.62 / 3.24 1.20 / 2.40

MF-RX375 5.81 / 11.6 5.10 / 10.2 4.46 / 8.92 3.75 / 7.50 3.04 / 6.08 2.70 / 5.40 2.36 / 4.72 2.03 / 4.06 1.50 / 3.00

Specifications are subject to change without notice.Specifications are subject to change without notice.

How to Order

MF - RX 110 - __

Multifuse®Product Designator

Series

RX = Radial Leaded Component

Hold Current, Ihold

110-375 (1.10 Amps - 3.75 Amps)

Packaging Options

- =Bulk Packaging

- 2 = Tape and Reel*

- AP = Ammo-Pak*

*Packaged per EIA 486-B MF-RX SERIES, REV. H, 11/02

Product Dimensions

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 – MF-RX160 = 1000 pcs. per reel; MF-RX185 – MF-RX375 = 500 pcs. per reel

MF-RX Series - PTC Resettable Fuses

Additional Features

■Resettable circuit protection

■Patents pending

AB CDEPhysical Characteristics

Model Max. Max. Nom. Tol. ± Min. Max. Style Lead Dia. Material

MF-RX110 13.0 18.0 5.1 0.7 7.6 3.1 10.81 Sn/Cu

(0.512) (0.709) (0.201) (0.028) (0.299) (0.122) (0.032)

MF-RX135 14.5 19.6 5.1 0.7 7.6 3.1 10.81 Sn/Cu

(0.571) (0.772) (0.201) (0.028) (0.299) (0.122) (0.032)

MF-RX160 16.3 21.3 5.1 0.7 7.6 3.1 10.81 Sn/Cu

(0.642) (0.839) (0.201) (0.028) (0.299) (0.122) (0.032)

MF-RX185 17.8 22.9 5.1 0.7 7.6 3.1 10.81 Sn/Cu

(0.701) (0.902) (0.201) (0.028) (0.299) (0.122) (0.032)

MF-RX250 21.3 26.4 10.2 0.7 7.6 3.1 10.81 Sn/Cu

(0.839) (1.039) (0.402) (0.028) (0.299) (0.122) (0.032)

MF-RX300 24.9 30.0 10.2 0.7 7.6 3.1 10.81 Sn/Cu

(0.980) (1.181) (0.402) (0.028) (0.299) (0.122) (0.032)

MF-RX375 28.4 33.5 10.2 0.7 7.6 3.1 10.81 Sn/Cu

(1.118) (1.319) (0.402) (0.028) (0.299) (0.122) (0.032)

Typical Part Marking

Represents total content. Layout may vary.

RX110

0180T

MANUFACTURER'S

TRADEMARK

PART

IDENTIFICATION LOT NO.

(T = TAIWAN

S = CHINA)

DATE CODE

(FIRST DIGIT =

LAST DIGIT OF YEAR;

NEXT THREE DIGITS =

DAY OF YEAR)

NOTE: Kinked lead option is available for

board standoff. Contact factory for

details.

Typical Time to Trip at 23˚C

0.01

0.001 110100

0.1

100

1000

Fault Current (Amps)

Time to Trip (Seconds)

MF-RX110

MF-RX135

MF-RX160

MF-RX185

MF-RX250

MF-RX300

MF-RX375

(INCHES)

DIMENSIONS =

0.81 (20AWG)

Specifications are subject to change without notice.

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

IEC EIA Dimensions

Dimension Description Mark Mark Dimensions Tolerance

Carrier tape width WW

Hold down tape width W4 ref.

Hold down tape W0 No protrusion

Top distance between tape edges W2 W6 max.

Sprocket hole position W1 W5

Sprocket hole diameter D0 D0

Abscissa to plane (straight lead) HH

Abscissa to plane (kinked lead) H0 H0

Abscissa to top H1 H1 max.

Overall width w/lead protrusion C1 max.

Overall width w/o lead protrusion C2 max.

Lead protrusion I1 L1 max.

Protrusion of cutout LL max.

Protrusion beyond hold tape I2 I2 Not specified

Sprocket hole pitch P0 P0

Pitch tolerance 20 consecutive ±1

Device pitch: MF-R010 – MF-R160 & MF-R/90

Device pitch: MF-R185 – MF-R400

Device pitch: MF-RX110 – MF-RX160

Device pitch: MF-RX185 – MF-RX375

Device pitch: MF-R/250

Tape thickness tt max.

Tape thickness with splice t1 max.

Splice sprocket hole alignment 0

Body lateral deviation ∆h∆h0

Body tape plane deviation ∆p∆p0

Lead seating plane deviation ∆P1 P1 0

Lead spacing FF

Reel width ww max.

Reel diameter da max.

Space between flanges less device

MF-R, MF-RX, MF-R/90 & MF-R/250 Series Tape and Reel Specifications

(.709) -0.5/+1.0

(-0.02/+.039)

(.354) -0.5/+0.75

(-0.02/+0.03)

(.157) ±0.2

(±.0078)

18.5

(.728) ±3.0

(±.118)

(.63)

32.2

(1.268)

43.2

(1.7)

42.5

(1.673)

1.0

(.039)

(.433)

±0.5

(±.02)

12.7

(0.5)

12.7

(0.5)

12.7

(0.5)

25.4

(1.0)

12.7

(0.5)

12.7

(0.5)

0.9

(.035)

2.0

(.079)

5.08

(0.2)

(2.205)

370

(14.57)

±0.3

(±.012)

±0.3

(±.012)

±1.0

(±.039)

±1.3

(±.051)

±0.7

(±.028)

±0.8

(±.035)

4.75

(.187) ±3.25

(±.128)

(.512)

(.118)

DIMENSIONS = MM

(INCHES)

Specifications are subject to change without notice.

MF-R, MF-RX, MF-R/90 & MF-R/250 Series Tape and Reel Specifications

User direction of feed

Cross section A - B

∆p∆p

HH1

Reference plane

H0W1W

H1 P1

∆h

Reel

Upper side

Tape

Lower side

User

direction

feed

Figure 1

Figure 2

Reel Dimensions

Taped Component Dimensions

IEC EIA Dimensions

Dimension Description Mark Mark Dimensions Tolerance

Space between flanges less device

Arbor hole diameter fc

Core diameter hn max.

Box max.

Consecutive missing places 3 maximum

Empty places per reel Not specified

4.75

(.187) ±3.25

(±.128)

(1.024)

(3.15)

(2.2) 372

(14.6) 372

(14.6)

±12.0

(±.472)

DIMENSIONS = MM

(INCHES)