MF-MSMF Series

Bourns Inc.

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Datasheet

Features
n Compliant with AEC-Q200 Rev-C- Stress
Test Qualification for Passive Components
in Automotive Applications
n 100 % electrically compatible with all
previous generations of 1812 SMT devices
n Compatible with Pb and Pb-free solder
reflow profiles
n RoHS compliant* and halogen free**
n Surface mount packaging for automated
assembly
n Agency recognition:
n Standard 4532 mm (1812 mils) footprint
n Patents pending
MF-MSMF Series - PTC Resettable Fuses
*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
**Bourns is using the definition that appears to be the prevalent definition used as the industry standard
at this time. The Bourns definition of “halogen-free” is: Bromine (Br) content: 900 ppm; Chlorine (Cl)
content: 900 ppm; Total Br + Cl content: 1500 ppm.
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.
Model V max.
Volts
I max.
Amps
Ihold Itrip Resistance Max. Time
To Trip
Tripped
Power
Dissipation
Amperes
at 23 °C
Ohms
at 23 °C
Amperes
at 23 °C
Seconds
at 23 °C
Watts
at 23 °C
Hold Trip RMin. R1Max. Typ.
MF-MSMF010 60.0 40 0.10 0.30 0.70 15.00 0.5 1.50 0.8
MF-MSMF014 60.0 40 0.14 0.34 0.40 6.50 1.5 0.15 0.8
MF-MSMF020 30.0 80 0.20 0.40 0.40 6.00 6.0 0.06 0.8
MF-MSMF020/60 60.0 40 0.20 0.40 0.40 6.00 1.5 0.15 0.8
MF-MSMF030 30.0 10 0.30 0.60 0.30 3.00 8.0 0.10 0.8
MF-MSMF050 15.0 100 0.50 1.00 0.15 1.00 8.0 0.15 0.8
MF-MSMF050/30X 30.0 40 0.50 1.00 0.15 1.30 8.0 0.15 0.8
MF-MSMF050/40X*** 40.0 20 0.50 1.00 0.15 1.30 8.0 0.15 0.8
MF-MSMF075 13.2 100 0.75 1.50 0.11 0.45 8.0 0.20 0.8
MF-MSMF075/24 24.0 40 0.75 1.50 0.11 0.45 8.0 0.20 0.8
MF-MSMF075/33X*** 33.0 20 0.75 1.50 0.11 0.40 8.0 0.20 1.4
MF-MSMF110 6.0 100 1.10 2.20 0.04 0.21 8.0 0.30 0.8
MF-MSMF110/16 16.0 100 1.10 2.20 0.04 0.21 8.0 0.30 0.8
MF-MSMF110/24X 24.0 20 1.10 2.20 0.06 0.18 8.0 0.50 0.8
MF-MSMF125 6.0 100 1.25 2.50 0.05 0.14 8.0 0.40 0.8
MF-MSMF150 6.0 100 1.50 3.00 0.03 0.120 8.0 0.5 0.8
MF-MSMF150/12 12.0 100 1.50 3.00 0.03 0.120 8.0 0.5 0.8
MF-MSMF150/24X 24.0 20 1.50 3.00 0.03 0.120 8.0 1.50 1.0
MF-MSMF160 8.0 100 1.60 2.80 0.035 0.099 8.0 2.0 0.8
MF-MSMF200 8.0 40 2.00 4.00 0.020 0.080 8.0 2.0 0.8
MF-MSMF250/16X 16.0 100 2.50 5.00 0.015 0.100 8.0 5.0 1.2
MF-MSMF260 6.0 100 2.60 5.20 0.015 0.080 8.0 5.0 0.8
***TUV approval pending.
Electrical Characteristics
Test Procedures And Requirements
Test Test Conditions Accept/Reject Criteria
Visual/Mech. ......................................................... Verify dimensions and materials ........................... Per MF physical description
Resistance ............................................................ In still air @ 23 °C ................................................. Rmin R R1max
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
Solderability .......................................................... ANSI/J-STD-002 ................................................... 95 % min. coverage
UL File Number .................................................... E174545
TÜV Certificate Number ....................................... R 50256634
*RoHS COMPLIANT
*RoHS COMPLIANT
& AEC APPROVED
*RoHS COMPLIANT, **HALOGEN FREE
& AEC COMPLIANT
*RoHS and
AEC-Q200 COMPLIANT
LEAD FREE
*RoHS COMPLIANT
VERSIONS
AVAILABLE
LEAD FREE
VERSIONS ARE
RoHS COMPLIANT*
Environmental Characteristics
Operating Temperature ......................................... -40 °C to +85 °C
Recommended Storage........................................ 40 °C max./ 70 % RH 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 ..................................................... +85 °C to -40 °C, 20 times .................................... ±10 % typical resistance change
Solvent Resistance ............................................... MIL-STD-202, Method 215 ................................... No change
Vibration ............................................................... MIL-STD-883C, Method 2007.1, ........................... No change (Rmin < R < R1max)
Condition A
Moisture Sensitivity Level (MSL) .......................... See Note
ESD Classification - HBM ..................................... Class 6
WARNING Cancer and Reproductive Harm
www.P65Warnings.ca.gov
Model A B C D Style
Min. Max. Min. Max. Min. Max. Min.
MF-MSMF010 4.37
(0.172)
4.73
(0.186)
3.07
(0.121)
3.41
(0.134)
0.70
(0.028)
1.10
(0.043)
0.30
(0.012) 1
MF-MSMF014 4.37
(0.172)
4.73
(0.186)
3.07
(0.121)
3.41
(0.134)
0.70
(0.028)
1.10
(0.043)
0.30
(0.012) 1
MF-MSMF020 4.37
(0.172)
4.73
(0.186)
3.07
(0.121)
3.41
(0.134)
0.70
(0.028)
1.10
(0.043)
0.30
(0.012) 1
MF-MSMF020/60 4.37
(0.172)
4.73
(0.186)
3.07
(0.121)
3.41
(0.134)
0.70
(0.028)
1.10
(0.043)
0.30
(0.012) 1
MF-MSMF030 4.37
(0.172)
4.73
(0.186)
3.07
(0.121)
3.41
(0.134)
0.70
(0.028)
1.10
(0.043)
0.30
(0.012) 1
MF-MSMF050 4.37
(0.172)
4.73
(0.186)
3.07
(0.121)
3.41
(0.134)
0.55
(0.022)
0.85
(0.033)
0.30
(0.012) 1
MF-MSMF050/30X 4.37
(0.172)
4.73
(0.186)
3.07
(0.121)
3.41
(0.134)
0.40
(0.016)
0.85
(0.033)
0.30
(0.012) 2
MF-MSMF050/40X 4.37
(0.172)
4.73
(0.186)
3.07
(0.121)
3.41
(0.134)
0.40
(0.016)
0.85
(0.033)
0.30
(0.012) 2
MF-MSMF075 4.37
(0.172)
4.73
(0.186)
3.07
(0.121)
3.41
(0.134)
0.55
(0.022)
0.85
(0.033)
0.30
(0.012) 1
MF-MSMF075/24 4.37
(0.172)
4.73
(0.186)
3.07
(0.121)
3.41
(0.134)
0.55
(0.022)
0.85
(0.033)
0.30
(0.012) 1
MF-MSMF075/33X 4.37
(0.172)
4.83
(0.190)
3.07
(0.121)
3.41
(0.134)
0.70
(0.028)
1.60
(0.063)
0.30
(0.012) 2
MF-MSMF110 4.37
(0.172)
4.73
(0.186)
3.07
(0.121)
3.41
(0.134)
0.45
(0.018)
0.85
(0.033)
0.30
(0.012) 1
MF-MSMF110/16 4.37
(0.172)
4.73
(0.186)
3.07
(0.121)
3.41
(0.134)
0.45
(0.018)
0.85
(0.033)
0.30
(0.012) 1
MF-MSMF110/24X 4.37
(0.172)
4.83
(0.190)
3.07
(0.121)
3.41
(0.134)
0.70
(0.028)
1.60
(0.063)
0.30
(0.012) 2
MF-MSMF125 4.37
(0.172)
4.73
(0.186)
3.07
(0.121)
3.41
(0.134)
0.55
(0.022)
0.85
(0.033)
0.30
(0.012) 1
MF-MSMF150 4.37
(0.172)
4.73
(0.186)
3.07
(0.121)
3.41
(0.134)
0.55
(0.022)
0.85
(0.033)
0.30
(0.012) 1
MF-MSMF150/12 4.37
(0.172)
4.73
(0.186)
3.07
(0.121)
3.41
(0.134)
0.55
(0.022)
0.85
(0.033)
0.30
(0.012) 1
MF-MSMF150/24X 4.37
(0.172)
4.83
(0.190)
3.07
(0.121)
3.41
(0.134)
0.70
(0.028)
1.60
(0.063)
0.30
(0.012) 2
MF-MSMF160 4.37
(0.172)
4.73
(0.186)
3.07
(0.121)
3.41
(0.134)
0.55
(0.022)
0.85
(0.033)
0.30
(0.012) 1
MF-MSMF200 4.37
(0.172)
4.73
(0.186)
3.07
(0.121)
3.41
(0.134)
0.55
(0.022)
0.85
(0.033)
0.30
(0.012) 1
MF-MSMF250/16X 4.37
(0.172)
4.83
(0.190)
3.07
(0.121)
3.41
(0.134)
0.70
(0.028)
1.60
(0.063)
0.30
(0.012) 2
MF-MSMF260 4.37
(0.172)
4.73
(0.186)
3.07
(0.121)
3.41
(0.134)
0.48
(0.019)
0.85
(0.033)
0.30
(0.012) 1
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.
MF-MSMF Series - PTC Resettable Fuses
Product Dimensions (see next page for outline drawings)
DIMENSIONS: MM
(INCHES)
Applications
n Overcurrent and overtemperature
protection of automotive electronics
n Hard disk drives
n PC motherboards
n PC peripherals
n Point-of-sale (POS) equipment
n PCMCIA cards
n USB port protection - USB 2.0, 3.0 & OTG
n HDMI 1.4 Source protection
Packaging:
MF-MSMF010 through MF-MSMF030 = 1500 pcs. per reel.
MF-MSMF050 through MF-MSMF260 = 2000 pcs. per reel.
MF-MSMF075/33X, MF-MSMF110/24X , MF-MSMF150/24X & MF-MSMF250/16X = 1500 pcs. per reel.
DIMENSIONS: MM
(INCHES)
MF-MSMF Series - PTC Resettable Fuses
A
B
C
Top and Bottom View Side View
D
Top View
Style 2
Style 1
Bottom View Side View Recommended Pad Layout
8
C
A
B
D
C
2.95 ± 0.10
(.114 ± .004)
3.1 ± 0.10
(.122 ± .004)
1.68 ± 0.05
(.066 ± .002)
Recommended Pad Layout
3.2 ± 0.1
(0.126 ± .004)
2.7 ± 0.1
(.106 ± .004)
1.5 ± 0.05
(.059 ± .002)
1.5 ± 0.05
(.059 ± .002)
Terminal material:
Electroless Ni under immersion Au
Product Dimensions (see previous page for dimensions)
Typical Time to Trip at 23 °C
The Time to Trip curves represent typical performance of a device in a simulated application environment. Actual performance in specific customer
applications may differ from these values due to the influence of other variables.
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.
0.001
0.01
0.1
1
10
100
0.1 110 100
MF-MSMF020
MF-MSMF030
MF-MSMF200
MF-MSMF010
MF-MSMF050
MF-MSMF075
MF-MSMF110
MF-MSMF150
MF-MSMF160
MF-MSMF260
Fault Current (Amps)
Time to Trip (Seconds)
MF-MSMF125
MF-MSMF014
0.001
0.01
0.1
1
10
100
0.1 110 100
MF-MSMF075/24 MF-MSMF110/16
MF-MSMF250/16X
Fault Current (Amps)
Time to Trip (Seconds)
MF-MSMF050/40X
MF-MSMF050/30X
MF-MSMF110/24X
MF-MSMF150/24X
MF-MSMF150/12
MF-MSMF020/60
MF-MSMF075/33X
0.001
0.01
0.1
1
10
100
0.1 110 100
MF-MSMF020
MF-MSMF030
MF-MSMF200
MF-MSMF010
MF-MSMF050
MF-MSMF075
MF-MSMF110
MF-MSMF150
MF-MSMF160
MF-MSMF260
Fault Current (Amps)
Time to Trip (Seconds)
MF-MSMF125
MF-MSMF014
0.001
0.01
0.1
1
10
100
0.1 110 100
MF-MSMF075/24 MF-MSMF110/16
MF-MSMF250/16X
Fault Current (Amps)
Time to Trip (Seconds)
MF-MSMF050/40X
MF-MSMF050/30X
MF-MSMF110/24X
MF-MSMF150/24X
MF-MSMF150/12
MF-MSMF020/60
MF-MSMF075/33X
Thermal Derating Chart - Ihold (Amps)
Model
Ambient Operating Temperature
-40 ˚C -20 ˚C 0 ˚C 23 ˚C 40 ˚C 50 ˚C 60 ˚C 70 ˚C 85 ˚C
MF-MSMF010 0.16 0.14 0.12 0.10 0.08 0.07 0.06 0.05 0.03
MF-MSMF014 0.23 0.19 0.17 0.14 0.12 0.10 0.09 0.08 0.06
MF-MSMF020 0.29 0.26 0.23 0.20 0.17 0.15 0.14 0.12 0.10
MF-MSMF020/60 0.29 0.26 0.23 0.20 0.17 0.15 0.14 0.12 0.10
MF-MSMF030 0.44 0.39 0.35 0.30 0.26 0.23 0.21 0.18 0.15
MF-MSMF050 0.77 0.68 0.59 0.50 0.44 0.40 0.37 0.33 0.29
MF-MSMF050/30X 0.77 0.68 0.59 0.50 0.44 0.40 0.37 0.33 0.25
MF-MSMF050/40X 0.77 0.68 0.59 0.50 0.44 0.40 0.37 0.33 0.25
MF-MSMF075 1.15 1.01 0.88 0.75 0.65 0.60 0.55 0.49 0.43
MF-MSMF075/24 1.15 1.01 0.88 0.75 0.65 0.60 0.55 0.49 0.43
MF-MSMF075/33X 1.16 1.03 0.90 0.75 0.63 0.56 0.49 0.42 0.32
MF-MSMF110 1.59 1.43 1.26 1.10 0.95 0.87 0.80 0.71 0.60
MF-MSMF110/16 1.59 1.43 1.26 1.10 0.95 0.87 0.80 0.71 0.60
MF-MSMF110/24X 2.00 1.70 1.40 1.10 0.95 0.88 0.80 0.73 0.61
MF-MSMF125 1.80 1.63 1.43 1.25 1.08 0.99 0.91 0.81 0.68
MF-MSMF150 2.17 1.95 1.72 1.50 1.30 1.18 1.09 0.97 0.82
MF-MSMF150/12 2.17 1.95 1.72 1.50 1.30 1.18 1.09 0.97 0.82
MF-MSMF150/24X 2.10 1.90 1.70 1.50 1.25 1.13 1.00 0.88 0.69
MF-MSMF160 2.30 2.20 1.90 1.60 1.45 1.30 1.15 1.03 0.91
MF-MSMF200 3.08 2.71 2.35 2.00 1.80 1.60 1.50 1.40 1.25
MF-MSMF250/16X 3.90 3.42 2.96 2.50 2.24 1.98 1.85 1.29 0.94
MF-MSMF260 4.00 3.52 3.06 2.60 2.34 2.08 1.95 1.39 1.04
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.
MF-MSMF Series - PTC Resettable Fuses
Profile Feature Pb-Free Assembly
Average Ramp-Up Rate (Tsmax to Tp) 3 °C / second max.
PREHEAT:
Temperature Min. (Tsmin)
Temperature Max. (Tsmax)
Time (Tsmin to Tsmax) (ts)
150 °C
200 °C
60~180 seconds
TIME MAINTAINED ABOVE:
Temperature (TL)
Time (tL)
217 °C
60~150 seconds
Peak Temperature (Tp) 260 °C
Time within 5 °C of Actual Peak Temperature (tp) 20~40 seconds
Ramp-Down Rate 6 °C / second max.
Time 25 °C to Peak Temperature 8 minutes max.
PART IDENTIFICATION EXAMPLES:
MF-MSMF020 = 02
MF-MSMF050 = 50
MF-MSMF075 & 075/24 = 75
MF-MSMF110 & 110/16 = 11
MF-MSMF150 & 150/12 = 15
MF-MSMF200 = 20
115Y
YEAR CODE:
5 = 2015
BI-WEEKLY DATE CODE:
WEEKS 49-50 = Y
PART IDENTIFICATION EXAMPLE:
MF-MSMF020/60 = 2
2
PART IDENTIFICATION EXAMPLES:
MF-MSMF050/30X & /40X = 4
MF-MSMF075/33X = H
MF-MSMF110/24X = 6
MF-MSMF150/24X = 8
MF-MSMF250/16X = C
BI-WEEKLY DATE CODE:
WEEKS 5-6 = C
8
C
3312 - 2 mm SMD Trimming Potentiometer
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.
MF-MSMF Series - PTC Resettable Fuses
Typical Part Marking
Represents total content. Layout may vary.
MF-MSMF SERIES, REV. AQ, 12/18
PART IDENTIFICATION EXAMPLES:
MF-MSMF020 = 02
MF-MSMF050 = 50
MF-MSMF075 & 075/24 = 75
MF-MSMF110 & 110/16 = 11
MF-MSMF150 & 150/12 = 15
MF-MSMF200 = 20
115Y
YEAR CODE:
5 = 2015
BI-WEEKLY DATE CODE:
WEEKS 49-50 = Y
PART IDENTIFICATION EXAMPLE:
MF-MSMF020/60 = 2
2
PART IDENTIFICATION EXAMPLES:
MF-MSMF050/30X & /40X = 4
MF-MSMF075/33X = H
MF-MSMF110/24X = 6
MF-MSMF150/24X = 8
MF-MSMF250/16X = C
BI-WEEKLY DATE CODE:
WEEKS 5-6 = C
8
C
Solder Reflow Recommendations
Notes:
MF-MSMF models cannot be wave soldered or hand
soldered. Please contact Bourns for soldering
recommendations.
All temperatures refer to topside of the package, measured
on the package body surface.
If reflow temperatures exceed the recommended profile,
devices may not meet the published specifications.
Compatible with Pb and Pb-free solder reflow profiles.
Excess solder may cause a short circuit, especially during
hand soldering. Please refer to the Multifuse® Polymer PTC
Soldering Recommendation guidelines.
Designed for single solder reflow operations.
Temperature of Lead/Pad Junction
Process Materials Temperature Time
Description Interval
1. Apply solder paste to Sn 96.5 / Ag 3.0 / Cu 0.5 Room temperature
test board (8 - 10 mil thick) Alloy water soluble or no
clean solder paste
(see note 1)
single sided epoxy glass
(G10) (UL approved)
PC board approx. 4x4x.06 in.
2. Place test units onto board 6 units/board
3. Ramp up Convection oven (see note 2) 2.5 °C ± 0.5 °/sec.
4. Preheat (TS.ces 03 ± 09C° 091 ot C° 051)
5. Time above liquidus (TL.ces 09-06C° 022)
6. Peak temperature (TP° 5-/° 0+ C° 052)
10-20 sec. within
5 °C of peak
.ces/C° 5.0 ± C° 3erutarepmet mooRnwod pmaR.7
(see note 2)
8. Cleaning water clean profile High pressure deionized 72 °F to 160 °F As required
water 65 PSI max. (22 °C to 71 °C)
Inspect solder joint to determine if solder joint is
acceptable (i.e. exhibits wetting of joint’s surface).
Use the following criteria (ref. acceptability of printed
board assemblies, IPC-A-610):
A) Acceptable (see Figure 1)
(1) The solder connection wetting angle (solder to
component and solder to PCB termination)
does not exceed 90 °.
(2) Solder balls that do not violate minimum
electrical clearances and are attached
(soldered) to a metal surface.
B) Unacceptable (see Figure 2)
(1) Solder connection wetting angle exceeding
90 °.
(2) Incomplete reflow of solder paste.
(3) Dewetting.
If unacceptable, determine cause and correct prior to
next run.
NOTES:
1. Water soluble solder paste only above 100K.
2. Refer to ref. temperature profile. Temperature at
lead/pad junction with “K” type thermocouple.
3. Units that are board mounted for environmental
testing must see a peak temperature in the reflow
zone, as specified. This is to ensure that all test
units will see “worst case conditions”.
4. Ramp down rate to be measured from 245 °C to
150 °C.
5. Process Description 8 does not apply to open
frame trimmers.
(Derived using 6-zone Convection Oven)
TP
TP
tp
ts
TTO
RAMP-UP L
TL
tL
TMAX.
S
T MIN.
25
PREHEAT
S
Temperature
Time
CRITICAL ZONE
RAMP-DOWN
t 25 *C TO PEAK
How to Order
MF - MSMF 075/24 - 2
Multifuse® Product
Designator
Series
MSMF = 4532 mm (1812 mils)
Surface Mount Component
Hold Current, Ihold
010-260 (0.10 Amps - 2.60 Amps)
Higher Voltage Option
Blank = Standard Voltage
/12, /16, /24,
/30, /33, /40, /60 = Specific Voltage Rated
X = Multifuse® freeXpansion
Design MF-MSMF Series
Packaging
Packaged per EIA 481
-2 = Tape and Reel
Profile Feature Pb-Free Assembly
Average Ramp-Up Rate (Tsmax to Tp) 3 °C / second max.
PREHEAT:
Temperature Min. (Tsmin)
Temperature Max. (Tsmax)
Time (Tsmin to Tsmax) (ts)
150 °C
200 °C
60~180 seconds
TIME MAINTAINED ABOVE:
Temperature (TL)
Time (tL)
217 °C
60~150 seconds
Peak Temperature (Tp) 260 °C
Time within 5 °C of Actual Peak Temperature (tp) 20~40 seconds
Ramp-Down Rate 6 °C / second max.
Time 25 °C to Peak Temperature 8 minutes max.
MF-MSMF-075/33X
MF-MSMF-110/24X
MF-MSMF010 - MF-MSMF050 - MF-MSMF150/24X
MF-MSMF030 MF-MSMF260 MF-MSMF250/16X
Tape Dimensions per EIA-481 per EIA 481 per EIA 481
W 12.0 ± 0.30 12.0 ± 0.30 12.0 ± 0.30
(0.472 ± 0.012) (0.472 ± 0.012) (0.472 ± 0.012)
P0 4.0 ± 0.10 4.0 ± 0.10 4.0 ± 0.10
(0.157 ± 0.004) (0.157 ± 0.004) (0.157 ± 0.004)
P1 8.0 ± 0.10 8.0 ± 0.10 8.0 ± 0.10
(0.315 ± 0.004) (0.315 ± 0.004) (0.315 ± 0.004)
P2 2.0 ± 0.05 2.0 ± 0.05 2.0 ± 0.05
(0.079 ± 0.002) (0.079 ± 0.002) (0.079 ± 0.002)
A0 3.58 ± 0.10 3.66 ± 0.15 3.70 ± 0.10
(0.141 ± 0.004) (0.144 ± 0.006) (0.146 ± 0.004)
B0 4.93 ± 0.10 4.98 ± 0.10 5.10 ± 0.10
(0.194 ± 0.004) (0.196 ± 0.004) (0.200 ± 0.004)
B1 max. 5.9 5.9 5.9
(0.232) (0.232) (0.232)
D0 1.5 + 0.10/-0.0 1.5 + 0.10/-0.0 1.5 + 0.10/-0.0
(0.059 + 0.004/-0) (0.059 + 0.004/-0) (0.059 + 0.004/-0)
F 5.5 ± 0.05 5.5 ± 0.05 5.5 ± 0.05
(0.217 ± 0.002) (0.217 ± 0.002) (0.217 ± 0.002)
E1 1.75 ± 0.10 1.75 ± 0.10 1.75 ± 0.10
(0.069 ± 0.004) (0.069 ± 0.004) (0.069 ± 0.004)
E2 min. 10.25 10.25 10.25
(0.404) (0.404) (0.404)
T max. 0.6 0.6 0.6
(0.024) (0.024) (0.024)
T1 max. 0.1 0.1 0.1
(0.004) (0.004) (0.004)
K0 1.30 ± 0.10 0.95 ± 0.10 1.50 ± 0.10
(0.051 ± 0.004) (0.037 ± 0.004) (0.059 ± 0.004)
Leader min. 390 390 390
(15.35) (15.35) (15.35)
Trailer min. 160 160 160
(6.30) (6.30) (6.30)
Reel Dimensions
A max. 185 185 185
(7.28) (7.28) (7.28)
N min. 50 50 50
(1.97) (1.97) (1.97)
W1 12.4 + 2.0/-0.0 12.4 + 2.0/-0.0 12.4 + 2.0/-0.0
(0.488 + 0.079/-0.0) (0.488 + 0.079/-0.0) (0.488 + 0.079/-0.0)
W2 max. 18.4 18.4 18.4
(0.724) (0.724) (0.724)
MF-MSMF Series Tape and Reel Specifications
B1
N(HUB DIA.)
(MEASURED
AT HUB)
A
T
COVER
TAPE
K0
T1A0
W2
(MEASURED
AT HUB)
W
1
P1
B0
F
D0P2
P
0
E2
E1
W
DIMENSIONS: MM
(INCHES)
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.
3312 - 2 mm SMD Trimming Potentiometer
Application Notice
MFAN 12/18
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.
Bourns® Multifuse® PPTC Resettable Fuses
Users are responsible for independent and adequate evaluation of Bourns® Multifuse® Polymer PTC devices in the user’s
application, including the PPTC device characteristics stated in the applicable data sheet.
Polymer PTC devices must not be allowed to operate beyond their stated maximum ratings. Operation in excess of such
maximum ratings could result in damage to the PTC device and possibly lead to electrical arcing and/or fire. Circuits with
inductance may generate a voltage above the rated voltage of the polymer PTC device and should be thoroughly evaluated
within the user’s application during the PTC selection and qualification process.
Polymer PTC devices are intended to protect against adverse effects of temporary overcurrent or overtemperature
conditions up to rated limits and are not intended to serve as protective devices where overcurrent or overvoltage conditions
are expected to be repetitive or prolonged.
In normal operation, polymer PTC devices experience thermal expansion under fault conditions. Thus, a polymer PTC
device must be protected against mechanical stress, and must be given adequate clearance within the user’s application to
accommodate such thermal expansion. Rigid potting materials or fixed housings or coverings that do not provide adequate
clearance should be thoroughly examined and tested by the user, as they may result in the malfunction of polymer PTC
devices if the thermal expansion is inhibited.
Exposure to lubricants, silicon-based oils, solvents, gels, electrolytes, acids, and other related or similar materials may
adversely affect the performance of polymer PTC devices.
Aggressive solvents may adversely affect the performance of polymer PTC devices. Conformal coating, encapsulating,
potting, molding, and sealing materials may contain aggressive solvents including but not limited to xylene and toluene,
which are known to cause adverse effects on the performance of polymer PTCs. Such aggressive solvents must be
thoroughly cured or baked to ensure their complete removal from polymer PTCs to minimize the possible adverse effect
on the device.
Recommended storage conditions should be followed at all times. Such conditions can be found on the applicable data
sheet and on the Multifuse® Polymer PTC Moisture/Reflow Sensitivity Classification (MSL) note:
https://www.bourns.com/docs/RoHS-MSL/msl_mf.pdf

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