Features

insulating material meets UL 94V-0

requirements

Applications

Almost anywhere there is a load to be

protected with a voltage supply of up to

90 V, including:

One Hour

Maximum

Nominal

Ihold

Itrip

Initial

Post-Trip

Time

Tripped

Resistance

Resistance

To Trip

Power

Values

Standard Trip

Dissipation

V max.

I max.

Amps

Amps

Ohms

Ohms

Amps

Seconds

Watts

Model

Volts

Amps

at 23 °C

at 23 °C

at 23 °C

at 23 °C

at 23 °C

at 23 °C

at 23 °C

Hold

Trip

Min.

Max.

Max.

Typ.

MF-R055/90

90

10

0.55

1.1

0.45

0.9

2.0

1.6

60

2.0

MF-R055/90U

90

10

0.55

1.1

0.45

0.9

2.0

1.6

28

2.0

MF-R075/90

90

10

0.75

1.5

0.37

0.75

1.65

2.0

60

2.5

TV Rheinland

Specifications are subject to change without notice.

Customers should verify actual device performance in their specific applications.

Electrical Characteristics

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-R055/90

0.85 / 1.7

0.75 / 1.5

0.65 / 1.3

0.55 / 1.1

0.45 / 0.9

0.4 / 0.8

0.35 / 0.7

0.3 / 0.6

0.22 / 0.44

MF-R055/90U

0.85 / 1.7

0.75 / 1.5

0.65 / 1.3

0.55 / 1.1

0.45 / 0.9

0.4 / 0.8

0.35 / 0.7

0.3 / 0.6

0.22 / 0.44

MF-R075/90

1.15 / 2.3

1.0 / 2.0

0.9 / 1.8

0.75 / 1.5

0.61 / 1.22

0.55 / 1.1

0.48 / 0.96

0.41 / 0.82

0.30 / 0.6

“U” suffix indicates product without insulation coating.

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 ........................................................At specified current, 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-R/90 Series

R

1220S

5

0 5