Features Applications
n Radial leaded devices Almost anywhere there is a load to be
protected with a voltage supply of up to
n Cured, flame retardant epoxy polymer
90 V, including:
insulating material meets UL 94V-0
requirements n Broadband cable power passing taps
n RoHS compliant* and halogen free* n Set-top boxes
n Agency recognition:
MF-R/90 Series - PTC Resettable Fuses
Electrical Characteristics
One Hour
Nominal
Initial Post-Trip
Max. Time Tripped
I I Resistance Resistance
hold trip
to Trip Power
Values Standard
Dissipation
V max. I max.
Trip
Model
Volts Amps
Amperes Ohms Ohms Amperes Seconds Watts
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
U suffix indicates product without insulation coating.
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 ................................................ +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
Test Procedures And Requirements For Model MF-R/90 Series
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 ............................................... E174545
TV File Number ............................................. R2057213
Thermal Derating Chart - I / I (Amps)
hold trip
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
* RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
** Bourns follows the prevailing definition of halogen free in the industry. 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.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specific applications.
*RoHS COMPLIANT
&
**HALOGEN FREE
*RoHS COMPLIANT
LEAD FREE
LEAD FREE
VERSIONS ARE
RoHS COMPLIANT*Additional Features
n Bulk packaging, tape and reel and Ammo-Pak available on most models
MF-R/90 Series - PTC Resettable Fuses
Product Dimensions
A B C (Pitch) D E Physical Characteristics
Model Max. Max. Nom. Min. Max. Style Lead Dia. Material
10.9 16.7 5.1 0.7 6.3 3.6 0.81
MF-R055/90 1 Sn/Cu
(0.43) (0.65) (0.201 0.028) (0.248) (0.142) (0.032)
10.3 16.7 5.1 0.7 6.3 3.0 0.81
MF-R055/90U 1 Sn/Cu
(0.4) (0.65) (0.201 0.028) (0.248) (0.118) (0.032)
11.9 15.5 5.1 0.7 6.3 3.6 0.81
MF-R075/90 1 Sn/Cu
(0.47) (0.61) (0.201 0.028) (0.248) (0.142) (0.032)
Packaging options:
MM
BULK: 500 pcs. per bag. TAPE & REEL: 1500 pcs. per reel. AMMO-PACK: 1000 pcs. per pack DIMENSIONS:
(INCHES)
Style 1
Typical Part Marking How to Order
A E
MF - R 055/90 U - 0 - 17
Represents total content. Layout may vary.
Multifuse
MANUFACTURER'S Product
TRADEMARK
Designator
PART
IDENTIFICATION Series
B
R055
LOT NO.
R = Radial Leaded
(S = CHINA)
1220S
DATE CODE
Component
(FIRST DIGIT =
Hold Current, I
LAST DIGIT OF YEAR; hold
055, 075 (0.55 A - 0.75 A)
NEXT THREE DIGITS =
DAY OF YEAR)
Max. Voltage, V
D
Coating
__ = Coated
U = Uncoated
C
Packaging Options
- 0 = Bulk Packaging
Also available with straight leads (see How to
- 2 = Tape and Reel*
Order).
- AP = Ammo-Pak*
Part Number Suffix Option
- 17 = Straight Leads in Place of
Standard Kinked Leads
*Packaged per EIA486-B
Typical Time to Trip at 23 C
100
10
1
MF-R075/90
MF-R055/90
MF-R055/90U
0.1
1 10
Fault Current (Amps)
MF-R/90, REV. L, 04/17
Specifications are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specific applications.
Time to Trip (Seconds)