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, specified current ................................T ≤ max. time to trip
Hold Current .................................................... At Ihold..............................................................No trip
Trip Cycle Life .................................................. 240 Vac, I
max
, 100 cycles ................................No arcing or burning
Trip Endurance ................................................ a) 240 Vac, I
max
, 24 hours ..............................No arcing or burning
b) 265 Vac, I
max
, 30 mins.
Solderability ..................................................... MIL-STD-202, Method 208 ...............................95 % min. coverage
UL File Number .....................E174545 ........... http://www.ul.com/ Follow link to Certifications, then UL File No., enter E174545
TÜV Certificate Number ........50232433 ......... http://www.tuvdotcom.com/certificates/50232433?locale=en&page_number=3
* 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.
Ro VE LEA
HS RS D
C ION FRE
OM S E
PL AR
IA E
NT
*
Advantages
n
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
n
Faster than bimetallic switch designs that take on average
approximately 30 seconds to cool down and reset
n
Generally lower electromagnetic interference than bimetallic switches
Benefits
n
Reduced repair and replacement costs
n
Reduced nuisance tripping
n
Combined overcurrent and overtemperature protector in one device
MF-RX Series - PTC Resettable Fuses
MF-RM Series - PTC Resettable Fuses
Thermal Derating Chart - Ihold (Amps)
Model
MF-RM005/240
MF-RM008/240
MF-RM012/240
MF-RM016/240
MF-RM025/240
MF-RM033/240
MF-RM040/240
MF-RM055/240
Ambient Operating Temperature
-20 ºC
0.08
0.12
0.18
0.24
0.38
0.50
0.61
0.80
0 ºC
0.06
0.10
0.15
0.20
0.32
0.42
0.51
0.68
23 ºC
0.05
0.08
0.12
0.16
0.25
0.33
0.40
0.55
40 ºC
0.04
0.07
0.10
0.13
0.21
0.27
0.33
0.46
50 ºC
0.04
0.06
0.09
0.11
0.18
0.23
0.28
0.40
60 ºC
0.03
0.05
0.07
0.10
0.15
0.20
0.24
0.35
70 ºC
0.03
0.04
0.06
0.08
0.13
0.17
0.20
0.29
85 ºC
0.02
0.03
0.04
0.05
0.09
0.11
0.14
0.22
Product Dimensions
Model
MF-RM005/240
MF-RM008/240
MF-RM012/240
MF-RM016/240
MF-RM025/240
MF-RM033/240
MF-RM040/240
MF-RM055/240
A
Max.
8.3
(0.327)
8.3
(0.327)
8.3
(0.327)
9.9
(0.390)
10.0
(0.394)
11.4
(0.449)
11.5
(0.453)
14.0
(0.551)
B
Max.
12.9
(0.508)
12.9
(0.508)
12.9
(0.508)
13.8
(0.543)
20.0
(0.787)
20.0
(0.787)
20.9
(0.823)
22.4
(0.882)
C
Nom.
5.1
(0.201)
5.1
(0.201)
5.1
(0.201)
5.1
(0.201)
5.1
(0.201)
5.1
(0.201)
5.1
(0.201)
5.1
(0.201)
Tol. ±
0.7
(0.028)
0.7
(0.028)
0.7
(0.028)
0.7
(0.028)
0.7
(0.028)
0.7
(0.028)
0.7
(0.028)
0.7
(0.028)
D
Min.
7.6
(0.299)
7.6
(0.299)
7.6
(0.299)
7.6
(0.299)
7.6
(0.299)
7.6
(0.299)
7.6
(0.299)
7.6
(0.299)
E
Max.
3.8
(0.150)
3.8
(0.150)
3.8
(0.150)
3.8
(0.150)
3.8
(0.150)
3.8
(0.150)
3.8
(0.150)
4.1
(0.161)
Physical Characteristics
Style
1
1
1
1
2
2
2
2
Lead Dia.
0.51
(0.020)
0.51
(0.020)
0.51
(0.020)
0.51
(0.020)
0.65
(0.026)
0.65
(0.026)
0.65
(0.026)
0.81
(0.032)
Material
Sn/Cu
Sn/Cu
Sn/Cu
Sn/Cu
Sn/Cu
Sn/Cu
Sn/Cu
Sn/Cu
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)
0.51 (24AWG)
MM
DIMENSIONS:
0.65 (22AWG)
(INCHES)
0.81 (20AWG)
Style 1
A
E
A
Style 2
E
Typical Part Marking
Represents total content. Layout may vary.
PART
IDENTIFICATION
MANUFACTURER'S
TRADEMARK
RM055
0220S
B
B
DATE CODE
(FIRST DIGIT =
LAST DIGIT OF YEAR;
NEXT THREE DIGITS =
DAY OF YEAR)
COUNTRY OF
MANUFACTURE
(T = TAIWAN
S = CHINA)
LEAD
DIA.
D
C
LEAD
DIA.
D
C
Also available with straight leads (see How to Order).
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.
MF-RM Series - PTC Resettable Fuses
Typical Time to Trip at 23 ˚C
100
How to Order
MF - RM 005 / 240 - 2 - 17
E
F G H
Multifuse
®
Product
Designator
Series
RM = Radial Leaded
Component
Hold Current, Ihold
005-055 (0.05 A - 0.55 A)
Operating Voltage, Vmax
240 = 240 Vac
Packaging Options
- 0 = Bulk Packaging
- 2 = Tape and Reel
A
B
C
D
Time to Trip (Seconds)
10
1
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
Part Number Suffix Option
- 17 = Straight Leads in Place of
Standard Kinked Leads
0.1
0.1
1
10
*Packaged per EIA486-B
Fault Current (Amps)
MF-RM SERIES, REV. F, 09/16
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.
MF-RM Series Tape and Reel Specifications
IEC
Mark
W
W0
EIA
Mark
W
W4
Dimensions
Dimensions
Tolerance
18
-0.5/+1.0
(.709)
(-0.02/+.039)
11
min.
(.433)
No protrusion
W2
W1
D0
H
H0
H1
H1
W6
W5
D0
H
H0
H1
H1
C1
C1
C2
C2
I1
L
I2
P0
L1
L
I2
P0
3
(.118)
9
(.354)
4
(.157)
18.5
(.728)
16
(.63)
32.2
(1.268)
45.0
(1.772)
43.2
(1.701)
56.0
(2.205)
42.5
(1.673)
56.0
(2.205)
1.0
(.039)
11
(.433)
Not specified
12.7
(.500)
20 consecutive
12.7
(.500)
25.4
(1.00)
0.9
(.035)
1.5
(.059)
2.3
(.091)
0
Δ
h
Δ
p
ΔP
1
F
Δ
h
Δ
p
P1
F
0
0
3.81
(.015)
5.08
(.200)
±0.3
(±.012)
±1
(±.039)
±0.3
(±.012)
±0.6
(±.024)
max.
max.
max.
±0.3
(±.012)
±1
(±.039)
±0.3
(±.012)
±0.7
(±.028)
+0.8/-0.5
(+.031/-.020)
DIMENSIONS:
MM
(INCHES)
Devices taped using EIA468–B/IEC60286-2 standards. See table below and Figures 1 and 2 for details.
Overall width w/o lead protrusion (MF-RM005/240~MF-RM016/240)
Overall width w/o lead protrusion (MF-RM025/240~MF-RM055/240)
Lead protrusion
Protrusion of cutout
Protrusion beyond hold-down tape
Sprocket hole pitch
Pitch tolerance
Device pitch (MF-RM005/240-MF-RM040/240)
Device pitch (MF-RM055/240)
Tape thickness
Tape thickness with splice (MF-RM005/240~MF-RM040/240)
Tape thickness with splice (MF-RM055/240)
Splice sprocket hole alignment
Body lateral deviation
Body tape plane deviation
Lead seating plane deviation
Lead spacing
t
t
t1
t1
max.
-0.5/+0.75
(-0.02/+0.03)
±0.2
(±.079)
±3.0
(±.118)
±0.5
(±.02)
max.
max.
max.
max.
max.
max.
max.
max.
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.
MF-RM Series Tape and Reel Specifications
IEC
Mark
w
w
d
h
h
f
h
EIA
Mark
w2
w2
a
w1
w1
c
n
Dimensions
Dimensions
Tolerance
56.0
max.
(2.20)
63.5
max.
(2.50)
370.0
max.
(14.57)
48.0
max.
(1.89)
55.0
max.
(2.17)
26.0
±12.0
(1.02)
(±.472)
p
p
91.0
max.
(3.58)
64
372
372
max.
(2.5) (14.6) (14.6)
3
max.
max.
DIMENSIONS:
MM
(INCHES)
Dimension Description
Reel width (MF-RM005/240~MF-RM040/240)
Reel width (MF-RM055/240)
Reel diameter
Space between flanges (MF-RM005/240~MF-RM040/240)
Space between flanges (MF-RM055/240)
Arbor hole diameter
Core diameter
Box
Consecutive missing places
Empty places per reel
h
h
Reference plane
H
1
L
P
1
F
A
B
H
0
W
0
W
1
W
p
I
2
I
1
P
1
F
A
B
H
0
W
0
P
0
Reference plane
D
0
H
1
H
0.1 %
Taped Component Dimensions - Figure 1
h
h
p
User direction of feed
Cross section A - B
H
1
H
H
1
L
W
1
W
t
I
2
I
1
P
0
D
0
User direction of feed
Cross section A - B
Reel Dimensions - Figure 2
t
Reel
Upper side
Tape
h
d
f
User
direction
of
feed
Lower side
h
w
Reel
Specifications are subject to change without notice.
Upper side
h
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Tape
Users should verify actual device performance in their specific applications.
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