MF-RX/72 Series - PTC Resettable Fuses

RX110

4180S

Features

n

72 V rated

n

Cured, flame retardant epoxy polymer

insulating material meets UL 94 V-0

requirements

n

RoHS compliant* and halogen free**

n

Agency recognition:

Applications

Almost anywhere there is a low voltage

power supply, up to 72 V and a load to be

protected, including:

n

Security and fire alarm systems

n

Loudspeakers

n

Power transformers

Electrical Characteristics

Model

Vmax Imax

Ihold Itrip

Initial

Resistance

1 Hour (R1)

Post-Trip

Resistance

Max. Time

to Trip

Tripped

Power

Dissipation

Agency

Recognition

at 23 °C

at 23 °C

Ohms

at 23 °C

Ohms

at 23 °C

at 23 °C

Watts

cUL

TÜV

Volts Amps

Amps

Min.

Max.

Max.

Amps Seconds

Typ.

E174545 R50366745

MF-RX020/72

72

40

0.20

0.40

1.50

2.84

4.40

1.00

2.2

0.40

3

3

MF-RX025/72

72

40

0.25

0.50

1.00

1.95

3.00

1.25

2.5

0.45

3

3

MF-RX030/72

72

40

0.30

0.60 0.76

1.36

2.10

1.50

3.0

0.50

3

3

MF-RX040/72

72

40

0.40

0.80 0.52

0.86

1.29

2.00

3.9

0.55

3

3

MF-RX050/72

72

40

0.50

1.00

0.41

0.77

1.17

2.50

4.0

0.75

3

3

MF-RX065/72

72

40

0.65

1.30

0.27

0.48

0.72

3.25

5.3

0.90

3

3

MF-RX075/72

72

40

0.75

1.50 0.18

0.40

0.60

3.75

6.3

0.90

3

3

MF-RX090/72

72

40

0.90

1.80 0.14

0.31

0.47

4.50

7.2

1.00

3

3

MF-RX110/72

72

40

1.10

2.20 0.15

0.25

0.38

5.50

8.2

1.50

3

3

MF-RX135/72

72

40

1.35

2.70 0.12

0.19

0.30

6.75

9.6

1.70

3

3

MF-RX160/72

72

40

1.60

3.20 0.09

0.14

0.22

8.00

11.4

1.90

3

3

MF-RX185/72

72

40

1.85

3.70 0.08

0.12

0.19

9.25

12.6

2.10

3

3

MF-RX250/72

72

40

2.50

5.00 0.05

0.08

0.13

12.50

15.6

2.50

3

3

MF-RX300/72

72

40

3.00

6.00 0.04

0.06

0.10

15.00

19.8

2.80

3

3

MF-RX375/72

72

40

3.75

7.50 0.03

0.05

0.08

18.75

24.0

3.20

3

3

* RoHS Directive 2015/863, Mar 31, 2015 and Annex.

** Bourns considers a product to be “halogen free” if (a) the Bromine (Br) content is 900 ppm or less; (b) the Chlorine (Cl)

content is 900 ppm or less; and (c) the total Bromine (Br) and Chlorine (Cl) content is 1500 ppm or less.

Specifications are subject to change without notice. Users should verify actual device performance in their specific

applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last

page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.

WARNING

Cancer and Reproductive Harm

www.P65Warnings.ca.gov

Additional Information

Click these links for more information:

PRODUCT

SELECTOR

TECHNICAL

LIBRARY

INVENTORY SAMPLES

CONTACT

Environmental Characteristics

Item

Condition

Criteria

Operating Temperature

-40 °C to +85 °C

Recommended Storage

+40 °C max. / 70 % R.H. max.

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

(marking still legible)

Vibration

MIL-STD-883C, Method 2007.1

Condition A

No change

(Rmin < R < R1max)

Moisture Sensitivity Level

(MSL)

See Note

ESD Classification

Class 6 (per AEC-Q200-2, HBM)

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