MF-RX250-_ datasheet, PDF - EEWORLD Datasheet

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MF-RX250-_: DescriptionRESISTOR, TEMPERATURE DEPENDENT, PTC RESETTABLE FUSE, THROUGH HOLE MOUNT, RADIAL LEADED, ROHS COMPLIANT; CategoryPassive components The resistor; File Size204KB，4 Pages; ManufacturerBourns; Websitehttp://www.bourns.com; Environmental Compliance

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MF-RX250-_ Overview

RESISTOR, TEMPERATURE DEPENDENT, PTC RESETTABLE FUSE, THROUGH HOLE MOUNT, RADIAL LEADED, ROHS COMPLIANT

MF-RX250-_ Parametric

Parameter Name	Attribute value
Is it lead-free?	Lead free
Is it Rohs certified?	conform to
Maker	Bourns
package instruction	RADIAL LEADED, ROHS COMPLIANT
Reach Compliance Code	compliant
Other features	0.05 TO 0.08 OHMS AT 23 DEG CEL
JESD-609 code	e3
Manufacturer's serial number	MF-RX
Installation features	THROUGH HOLE MOUNT
Number of terminals	2
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Package shape	DISK PACKAGE
method of packing	BULK
Rated (AC) voltage (URac)	60 V
Rated power dissipation(P)	2.5 W
Resistor type	PTC RESETTABLE FUSE
surface mount	NO
Terminal surface	TIN
Terminal location	RADIAL
Terminal shape	WIRE
Thermistor Applications	TEMPERATURE SENSING

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Features

■

Radial Leaded Devices

■

Cured, ﬂame retardant epoxy polymer

018 10

insulating material meets UL 94V-0

requirements

■

Agency recognition:

■

RoHS compliant*

The MF-RX Series is currently

available, although not recommended

for new designs. The higher voltage

rated

MF-RX/72 Series

is preferred.

MF-RX Series - PTC Resettable Fuses

Electrical Characteristics

Ihold

Model

V max.

Volts

I max.

Amps

Itrip

Initial

Resistance

Ohms

at 23 °C

Min.

0.15

0.12

0.09

0.08

0.05

0.04

0.03

Max.

0.25

0.19

0.14

0.12

0.08

0.06

0.05

1 Hour (R1)

Post-Trip

Resistance

Ohms

at 23 °C

Max.

0.38

0.30

0.22

0.19

0.13

0.10

0.08

5.5

6.75

8.0

9.25

12.5

15.0

18.75

8.2

9.6

11.4

12.6

15.6

19.8

24.0

Max. Time

to Trip

Amperes

at 23 °C

Seconds

at 23 °C

Tripped

Power

Dissipation

Watts

at 23 °C

Typ.

1.50

1.70

1.90

2.10

2.50

2.80

3.20

Amperes

at 23 °C

Hold

Trip

2.20

2.70

3.20

3.70

5.00

6.00

7.50

1.10

1.35

1.60

1.85

2.50

3.00

3.75

MF-RX110

MF-RX135

MF-RX160

MF-RX185

MF-RX250

MF-RX300

MF-RX375

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.......................................... ±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

Condition A

Test Procedures And Requirements For Model MF-RX Series

Test

Test Conditions

Accept/Reject Criteria

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

Resistance ....................................................... In still air @ 23 °C ............................................. Rmin

≤

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 - Ihold / Itrip (Amps)

Model

MF-RX110

MF-RX135

MF-RX160

MF-RX185

MF-RX250

MF-RX300

MF-RX375

Ambient Operating Temperature

-40 ºC

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

-20 ºC

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

0 ºC

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

23 ºC

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

40 ºC

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

50 ºC

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

60 ºC

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

70 ºC

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

85 ºC

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

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

Speciﬁcations are subject to change without notice.

Customers should verify actual device performance in their speciﬁc applications.

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