Environmental Characteristics
Operating Temperature .................................... -20 °C to +85 °C
Humidity Aging................................................. +85 °C, 85 % R.H. 1000 hours .........................±20 % typical resistance change
Passive Aging .................................................. +85 °C, 1000 hours ...........................................±20 % typical resistance change
Vibration .......................................................... MIL-STD-883C, Method 2007.1,.......................No change
Condition A
Solvent Resistance .......................................... MIL-STD-202, Method 215 ...............................No change
Test Procedures And Requirements For Model MF-RM Series
Item Test Conditions Accept/Reject Criteria
Visual/Mechanical ............................................ Verify dimensions and material .........................Per MF physical description
Resistance ....................................................... In still air @ 23 °C .............................................Rmin ≤ R ≤ R1max
Time to Trip ...................................................... 240 Vac, specifi ed current ................................T ≤ max. time to trip
Hold Current .................................................... At Ihold ..............................................................No trip
Trip Cycle Life .................................................. 240 Vac, Imax, 100 cycles ................................No arcing or burning
Trip Endurance ................................................ a) 240 Vac, Imax, 24 hours ..............................No arcing or burning
b) 265 Vac, Imax, 30 mins.
Solderability ..................................................... MIL-STD-202, Method 208 ...............................95 % min. coverage
UL File Number .....................E174545 ........... http://www.ul.com/ Follow link to Certifi cations, then UL File No., enter E174545
TÜV Certifi cate Number ........50232433 ......... http://www.tuvdotcom.com/certifi cates/50232433?locale=en&page_number=3
Electrical Characteristics
Model
Typical Current
Trip Limit Vmax Imax Initial
Resistance
One Hour
Post-Trip
Resistance
Max.
Time to Trip
Tripped
Power
Dissipation
Ihold
at 23 °C
Itrip
at 23 °C
Operating
Voltage
Interrupt
Voltage
Interrupt
Current
RMin.
at 23 °C
R1 Max.
at 23 °C at 23 °C PD Typ.
at 23 °C
(A) (A) (Vac) (Vac) (A) (Ohms) (Ohms) (A) (Sec.) (W)
MF-RM005/240 0.05 0.12 240 265 1.0 18.50 65.00 0.25 10.0 0.9
MF-RM008/240 0.08 0.19 240 265 1.2 7.40 26.00 0.40 10.0 0.9
MF-RM012/240 0.12 0.30 240 265 1.2 3.00 12.00 0.60 15.0 1.0
MF-RM016/240 0.16 0.37 240 265 2.0 2.50 7.80 0.80 15.0 1.4
MF-RM025/240 0.25 0.56 240 265 3.5 1.30 3.80 1.25 18.5 1.5
MF-RM033/240 0.33 0.74 240 265 4.5 0.77 2.60 1.65 21.0 1.7
MF-RM040/240 0.40 0.90 240 265 5.5 0.60 1.90 2.00 24.0 2.0
MF-RM055/240 0.55 1.25 240 265 7.0 0.45 1.45 2.75 26.0 3.4
Features
Radial leaded devices
Cured, ame retardant epoxy polymer
insulating material meets UL 94V-0
requirements
Bulk packaging, tape and reel available
Resettable circuit protection
Agency recognition:
RoHS compliant* and halogen free**
Applications
Food blenders, coffee machines
HVAC
Electric fans, blowers
AC adaptors
MF-RM Series - PTC Resettable Fuses
* RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
** Bourns follows the prevailing defi nition 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.
Specifi cations 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 specifi c applications.
*RoHS COMPLIANT
&
**HALOGEN FREE
MF-RX Series - PTC Resettable Fuses
Product Dimensions
Advantages
Resettable feature with overtemperature and overcurrent protection
can save expensive components from having to be replaced after
tripping, e.g., transformers with built in thermal fuses
Faster than bimetallic switch designs that take on average
approximately 30 seconds to cool down and reset
Generally lower electromagnetic interference than bimetallic switches
Benefi ts
Reduced repair and replacement costs
Reduced nuisance tripping
Combined overcurrent and overtemperature protector in one device
Model A B C D E Physical Characteristics
Max. Max. Nom. Tol. ± Min. Max. Style Lead Dia. Material
MF-RM005/240 8.3 12.9 5.1 0.7 7.6 3.8
1 0.51
Sn/Cu
(0.327) (0.508) (0.201) (0.028) (0.299) (0.150) (0.020)
MF-RM008/240 8.3 12.9 5.1 0.7 7.6 3.8
1 0.51
Sn/Cu
(0.327) (0.508) (0.201) (0.028) (0.299) (0.150) (0.020)
MF-RM012/240 8.3 12.9 5.1 0.7 7.6 3.8
1 0.51
Sn/Cu
(0.327) (0.508) (0.201) (0.028) (0.299) (0.150) (0.020)
MF-RM016/240 9.9 13.8 5.1 0.7 7.6 3.8
1 0.51
Sn/Cu
(0.390) (0.543) (0.201) (0.028) (0.299) (0.150) (0.020)
MF-RM025/240 10.0 20.0 5.1 0.7 7.6 3.8
2 0.65
Sn/Cu
(0.394) (0.787) (0.201) (0.028) (0.299) (0.150) (0.026)
MF-RM033/240 11.4 20.0 5.1 0.7 7.6 3.8
2 0.65
Sn/Cu
(0.449) (0.787) (0.201) (0.028) (0.299) (0.150) (0.026)
MF-RM040/240 11.5 20.9 5.1 0.7 7.6 3.8
2 0.65
Sn/Cu
(0.453) (0.823) (0.201) (0.028) (0.299) (0.150) (0.026)
MF-RM055/240 14.0 22.4 5.1 0.7 7.6 4.1
2 0.81
Sn/Cu
(0.551) (0.882) (0.201) (0.028) (0.299) (0.161) (0.032)
Packaging options:
BULK: 500 pcs. per bag.
TAPE & REEL: 2000 pcs. per reel (MF-RM005/240~MF-RM040/240); 1000 pcs. per reel (MF-RM055/240)
D
B
E
LEAD
DIA. C
A
D
B
E
LEAD
DIA. C
A
Typical Part Marking
Represents total content. Layout may vary.
RM055
0220S
MANUFACTURER'S
TRADEMARK
PART
IDENTIFICATION
DATE CODE
(FIRST DIGIT =
LAST DIGIT OF YEAR;
NEXT THREE DIGITS =
DAY OF YEAR)
COUNTRY OF
MANUFACTURE
(T = TAIWAN
S = CHINA)
Specifi cations 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
specifi c applications.
MF-RM Series - PTC Resettable Fuses
Thermal Derating Chart - Ihold (Amps)
Model Ambient Operating Temperature
-20 ºC 0 ºC 23 ºC 40 ºC 50 ºC 60 ºC 70 ºC 85 ºC
MF-RM005/240 0.08 0.06 0.05 0.04 0.04 0.03 0.03 0.02
MF-RM008/240 0.12 0.10 0.08 0.07 0.06 0.05 0.04 0.03
MF-RM012/240 0.18 0.15 0.12 0.10 0.09 0.07 0.06 0.04
MF-RM016/240 0.24 0.20 0.16 0.13 0.11 0.10 0.08 0.05
MF-RM025/240 0.38 0.32 0.25 0.21 0.18 0.15 0.13 0.09
MF-RM033/240 0.50 0.42 0.33 0.27 0.23 0.20 0.17 0.11
MF-RM040/240 0.61 0.51 0.40 0.33 0.28 0.24 0.20 0.14
MF-RM055/240 0.80 0.68 0.55 0.46 0.40 0.35 0.29 0.22
0.51 (24AWG)
0.65 (22AWG)
0.81 (20AWG)
Style 1 Style 2
DIMENSIONS: MM
(INCHES)
MF-RM SERIES, REV. D, 11/14
How to Order
MF - RM 005 / 240 - 2
Multifuse®
Product Designator
Series
RM = Radial Leaded
Component
Hold Current, Ihold
005-055 (0.05 Amps - 0.55 Amps)
Operating Voltage, Vmax
240 = 240 Vac
Packaging Options
- 0 = Bulk Packaging
- 2 = Tape and Reel
*Packaged per EIA486-B
Typical Time to Trip at 23 ˚C
100
10
1
0.1
0.1
Fault Current (Amps)
Time to Trip (Seconds)
110
A = MF-RM005/240
B = MF-RM008/240
C = MF-RM012/240
D = MF-RM016/240
E = MF-RM025/240
F = MF-RM033/240
G = MF-RM040/240
H = MF-RM055/240
ABCDEF G H
Specifi cations 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 specifi c applications.
MF-RM Series - PTC Resettable Fuses
IEC EIA Dimensions
Dimension Description Mark Mark Dimensions Tolerance
Carrier tape width W W 18 -0.5/+1.0
(.709) (-0.02/+.039)
Hold down tape width W0 W4 11
min.
(.433)
Hold down tape No protrusion
Top distance between tape edges W2 W
6 3
max.
(.118)
Sprocket hole position W1 W
5 9 -0.5/+0.75
(.354) (-0.02/+0.03)
Sprocket hole diameter D0 D
0 4 ±0.2
(.157) (±.079)
Abscissa to plane (MF-RM005/240~MF-RM016/240) H H 18.5 ±3.0
(.728) (±.118)
Abscissa to plane (MF-RM025/240~MF-RM055/240) H0 H
0 16 ±0.5
(.63) (±.02)
Abscissa to top (MF-RM005/240~MF-RM016/240) H1 H
1 32.2
max.
(1.268)
Abscissa to top (MF-RM025/240~MF-RM055/240) H1 H
1 45.0
max.
(1.772)
Overall width w/lead protrusion (MF-RM005/240~MF-RM016/240) C1 43.2
max.
(1.701)
Overall width w/lead protrusion (MF-RM025/240~MF-RM055/240) C1 56.0
max.
(2.205)
Overall width w/o lead protrusion (MF-RM005/240~MF-RM016/240) C2 42.5
max.
(1.673)
Overall width w/o lead protrusion (MF-RM025/240~MF-RM055/240) C2 56.0
max.
(2.205)
Lead protrusion I1 L
1 1.0
max.
(.039)
Protrusion of cutout L L 11
max.
(.433)
Protrusion beyond hold-down tape I2 I
2 Not specifi ed
Sprocket hole pitch P0 P
0 12.7 ±0.3
(.500) (±.012)
Pitch tolerance 20 consecutive ±1
(±.039)
Device pitch (MF-RM005/240-MF-RM040/240) 12.7 ±0.3
(.500) (±.012)
Device pitch (MF-RM055/240) 25.4 ±0.6
(1.00) (±.024)
Tape thickness t t 0.9
max.
(.035)
Tape thickness with splice (MF-RM005/240~MF-RM040/240) t1 1.5
max.
(.059)
Tape thickness with splice (MF-RM055/240) t1 2.3
max.
(.091)
Splice sprocket hole alignment
0 ±0.3
(±.012)
Body lateral deviation Δh Δh 0
±1
(±.039)
Body tape plane deviation Δp Δp 0
±0.3
(±.012)
Lead seating plane deviation ΔP1 P
1 3.81 ±0.7
(.015) (±.028)
Lead spacing F F 5.08 +0.8/-0.5
(.200) (+.031/-.020)
MF-RM Series Tape and Reel Specifi cations
Devices taped using EIA468–B/IEC60286-2 standards. See table below and Figures 1 and 2 for details.
DIMENSIONS: MM
(INCHES)
Specifi cations 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 specifi c applications.
t
User direction of feed
Cross section A - B
pp
H
H1
Reference plane
W0
H0W1
W
AB
F
D0
P0
I1
I2
L
H1
P1
h
h
IEC EIA Dimensions
Dimension Description Mark Mark Dimensions Tolerance
Reel width (MF-RM005/240~MF-RM040/240) w w2 56.0
max.
(2.20)
Reel width (MF-RM055/240) w w2 63.5
max.
(2.50)
Reel diameter d a 370.0
max.
(14.57)
Space between fl anges (MF-RM005/240~MF-RM040/240) h w1 48.0
max.
(1.89)
Space between fl anges (MF-RM055/240) h w1 55.0
max.
(2.17)
Arbor hole diameter f c 26.0 ±12.0
(1.02) (±.472)
Core diameter h n 91.0
max.
(3.58)
Box 64 372 372
max.
(2.5) (14.6) (14.6)
Consecutive missing places 3 max.
Empty places per reel 0.1 % max.
MF-RM Series Tape and Reel Specifi cations
Taped Component Dimensions - Figure 1
Reel Dimensions - Figure 2
h
w
h
f
d
Reel
Upper side
Tape
Lower side
User
direction
of
feed
DIMENSIONS: MM
(INCHES)
Specifi cations 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 specifi c applications.
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Bourns:
MF-RM005/240-0 MF-RM005/240-2 MF-RM008/240-0 MF-RM008/240-2 MF-RM012/240-0 MF-RM012/240-2 MF-
RM016/240-0 MF-RM016/240-2 MF-RM025/240-0 MF-RM025/240-2 MF-RM033/240-0 MF-RM033/240-2 MF-
RM040/240-0 MF-RM040/240-2 MF-RM055/240-0 MF-RM055/240-2