Polymer PTC Resettable Fuse：
：：
：KMC Series
SMD Type
THINKING ELECTRONIC INDUSTRIAL Co., LTD.
1
www.thinking.com.tw
2009.12
All specifications are subject to change without notice.
Features
1. RoHS compliant
2. EIA size:1206~1812
3. Hold current ratings from 0.05 to 3A
4.
Voltage ratings from 6V computer and electronic applications to 60V
5. Small footprint
6. Fast time to trip
7. Low resistance
8. Operating temperature range : -40~+85℃
Recommended Applications
1. Computer and peripherals
2. Mobile phone battery packs
3. Automobiles
4. Power supplies
5. Telecommunication
Part Number Code
K M C 3 S 0 5 0 R Y
1 2 3 4 5 6 7 8 9 10 11 12 13
Product Code
K
THINKING
PPTC
Thermistor
Type
MC
SMD
Type
Dimension
3 1206
4 1210
5 1812
Structure
S Type
I hold
035 0.35A
050 0.5A
075 0.75A
Packing
B
Bulk
R
Tape & Reel
Optional Suffix
Y
RoHS + HF
Polymer PTC Resettable Fuse：
：：
：KMC Series
SMD Type
THINKING ELECTRONIC INDUSTRIAL Co., LTD.
2
www.thinking.com.tw
2009.12
All specifications are subject to change without notice.
Structure & Dimensions
A B C D E
Part No. (Min.) (Max.) (Min.) (Max.) (Max.) (Min.) (Min.) (Max)
KMC3S005 1.45
KMC3S010 1.45
KMC3S012 1.45
KMC3S016 1.45
KMC3S020 1.10
KMC3S025 1.00
KMC3S035 0.75
KMC3S050 0.75
KMC3S050-15 1.25
KMC3S075 0.85
KMC3S100 1.10
KMC3S110 1.10
KMC3S150 1.40
KMC3S200
3.00 3.50 1.50 1.80
1.60
0.20 0.10 0.45
KMC4S005 1.30
KMC4S010 1.30
KMC4S020 1.10
KMC4S035 0.85
KMC4S050 0.85
KMC4S075 0.85
KMC4S110 1.30
KMC4S150 1.80
KMC4S175
3.00 3.43 2.35 2.80
1.80
0.25 0.10 0.50
(Unit: mm)
A
AA
A
D
DD
DE
EE
E
B
BB
B
C
CC
C
Polymer PTC Resettable Fuse：
：：
：KMC Series
SMD Type
THINKING ELECTRONIC INDUSTRIAL Co., LTD.
3
www.thinking.com.tw
2009.12
All specifications are subject to change without notice.
Structure & Dimensions
A B C D E
Part No. (Min.) (Max.) (Min.) (Max.) (Max.) (Min.) (Min.) (Max)
KMC5S010 1.30
KMC5S014 1.25
KMC5S020 1.10
KMC5S035 0.90
KMC5S050 0.75
KMC5S075 0.75
KMC5S075-24 1.55
KMC5S075-33 1.55
KMC5S110 0.73
KMC5S110-16 1.25
KMC5S110-24 1.60
KMC5S110-33 2.00
KMC5S125-16 1.25
KMC5S125 0.75
KMC5S150 0.73
KMC5S150-12 1.25
KMC5S150-24 1.80
KMC5S160 0.75
KMC5S200 1.20
KMC5S260 1.34
KMC5S300
4.37 4.73 3.07 3.41
1.55
0.30 0.20 0.65
(Unit: mm)
A
AA
A
D
DD
DE
EE
E
B
BB
B
C
CC
C
Polymer PTC Resettable Fuse：
：：
：KMC Series
SMD Type
THINKING ELECTRONIC INDUSTRIAL Co., LTD.
4
www.thinking.com.tw
2009.12
All specifications are subject to change without notice.
Electrical Characteristics(23℃
℃℃
℃)
Resistance @ 23℃ (Ω)
Vmax.
Imax. Ihold
@ 23℃
Itrip
@ 23℃
Pd
(Max.) Maximum
Time to Trip Initial
(Min.Ri)
Post trip
(Max.R1)
Safety Approvals
Current
Time
Part No.
(V
DC
)
(A) (A) (A) (W) (A) (Sec.)
(Ω) (Ω) UL
cUL
TUV
KMC3S005 60 100 0.05 0.15 0.4 0.25 1.5 3.6 50
KMC3S010 60 100 0.10 0.25 0.4 0.50 1.0 1.6 15
KMC3S012 30 100 0.125 0.29 0.5 1 0.2 1.4 6
KMC3S016 30 100 0.16 0.37 0.5 1 0.3 1.1 4.5
KMC3S020 24 100 0.20 0.42 0.6 8 0.1 0.65 2.6
KMC3S025 16 100 0.25 0.50 0.6 8 0.08 0.55 2.3
KMC3S035 16 100 0.35 0.75 0.6 8 0.1 0.3 1.2
KMC3S050 6 100 0.50 1.00 0.6 8 0.1 0.15 0.7
KMC3S050-15
15 100 0.50 1.00 0.6 8 0.1 0.15 0.7
KMC3S075 6 100 0.75 1.50 0.6 8 0.2 0.1 0.29
KMC3S100 6 100 1.00 1.80 0.8 8 0.3 0.065 0.21
KMC3S110 6 100 1.10 2.20 0.8 8 0.3 0.07 0.2
KMC3S150 6 100 1.50 3.00 0.8 8 1 0.04 0.12
KMC3S200 6 100 2.00 3.50 1 8 1.5 0.02 0.08
KMC4S005 30 10 0.05 0.15 0.6 0.25 1.5 3.6 50
KMC4S010 30 10 0.10 0.30 0.6 0.5 1.5 1.6 15
KMC4S020 30 10 0.20 0.40 0.6 8 0.02 0.8 5
KMC4S035 6 100 0.35 0.70 0.6 8 0.2 0.32 1.3
KMC4S050 13.2 100 0.50 1.00 0.6 8 0.1 0.25 0.9
KMC4S075 6 100 0.75 1.50 0.6 8 0.1 0.11 0.4
KMC4S110 6 100 1.10 2.20 0.6 8 0.3 0.06 0.21
KMC4S150 6 100 1.50 3.00 0.8 8 0.5 0.04 0.11
KMC4S175 6 40 1.75 3.50 0.8 8 0.8 0.02 0.08
Polymer PTC Resettable Fuse：
：：
：KMC Series
SMD Type
THINKING ELECTRONIC INDUSTRIAL Co., LTD.
5
www.thinking.com.tw
2009.12
All specifications are subject to change without notice.
Electrical Characteristics(23℃
℃℃
℃)
Resistance
@ 23℃
(Ω)
Vmax.
Imax. Ihold
@ 23℃
Itrip
@ 23℃
Pd
(Max.)
Maximum
Time to Trip Initial
(Min.Ri)
Post trip
(Max.R1)
Safety Approvals
Current
Time
Part No.
(V
DC
)
(A) (A) (A) (W) (A) (Ω) (Ω) (Ω) UL
cUL
TUV
KMC5S010 30 100 0.10 0.30 0.8 0.5 1.5 1.6 15
KMC5S014 60 10 0.14 0.34 0.8 1.5 0.15 1.5 6
KMC5S020 30 100 0.20 0.40 0.8 8 0.02 0.8 5
KMC5S035 16 100 0.35 0.70 0.8 8 0.1 0.32 1.5
KMC5S050 16 100 0.50 1.00 0.8 8 0.15 0.15 1
KMC5S075 13.2 100 0.75 1.50 0.8 8 0.2 0.11 0.45
KMC5S075-24
24 100 0.75 1.50 0.8 8 0.2 0.11 0.29
KMC5S075-33
33 20 0.75 1.50 0.8 8 0.2 0.11 0.4
KMC5S110 8 100 1.10 2.20 0.8 8 0.3 0.04 0.21
KMC5S110-16
16 100 1.10 2.20 0.8 8 0.5 0.06 0.18
KMC5S110-24
24 20 1.10 2.20 0.8 8 0.5 0.06 0.2
KMC5S110-33
33 20 1.10 2.20 0.8 8 0.5 0.06 0.2
KMC5S125-16
16 100 1.25 2.50 0.8 8 0.4 0.05 0.14
KMC5S125 6 100 1.25 2.50 0.8 8 0.4 0.05 0.14
KMC5S150 8 100 1.50 3.00 0.9 8 0.3 0.04 0.11
KMC5S150-12
12 100 1.50 3.00 0.9 8 0.5 0.04 0.11
KMC5S150-24
24 20 1.50 3.00 0.9 8 1.5 0.04 0.12
KMC5S160 8 100 1.60 3.20 0.8 8 1.0 0.03 0.1
KMC5S200 8 100 2.00 3.50 1.2 8 2.0 0.02 0.06
KMC5S260 6 100 2.60 5.00 1.2 8 2.5 0.015 0.047
KMC5S300 6 100 3.00 5.00 1.2 8 4.0 0.012 0.04
Note : UL&cUL File No. E138827
TUV File No. R50143386
Polymer PTC Resettable Fuse：
：：
：KMC Series
SMD Type
THINKING ELECTRONIC INDUSTRIAL Co., LTD.
6
www.thinking.com.tw
2009.12
All specifications are subject to change without notice.
Typical Time to Trip Curve at 23℃
℃℃
℃
Polymer PTC Resettable Fuse：
：：
：KMC Series
SMD Type
THINKING ELECTRONIC INDUSTRIAL Co., LTD.
7
www.thinking.com.tw
2009.12
All specifications are subject to change without notice.
Typical Time to Trip Curve at 23℃
℃℃
℃
Polymer PTC Resettable Fuse：
：：
：KMC Series
SMD Type
THINKING ELECTRONIC INDUSTRIAL Co., LTD.
8
www.thinking.com.tw
2009.12
All specifications are subject to change without notice.
Thermal Derating Chart –Ihold / Itrip (Amps)
Ambient Operation Temperature
Model -40℃ -20℃ 0℃ 23℃ 40℃ 50℃ 60℃ 70℃ 85℃
KMC3S005 0.0725 0.063 0.057 0.05 0.043 0.038 0.035 0.03 0.026
KMC3S010 0.145 0.33 0.115 0.10 0.085 0.075 0.07 0.06 0.055
KMC3S012 0.20 0.17 0.15 0.12 0.11 0.10 0.09 0.08 0.07
KMC3S016 0.21 0.20 0.18 0.16 0.14 0.13 0.12 0.11 0.09
KMC3S020 0.34 0.30 0.26 0.20 0.17 0.15 0.13 0.11 0.08
KMC3S025 0.37 0.33 0.29 0.25 0.22 0.20 0.17 0.15 0.12
KMC3S035 0.50 0.45 0.40 0.35 0.30 0.27 0.24 0.21 0.15
KMC3S050 0.71 0.64 0.57 0.50 0.42 0.39 0.35 0.31 0.25
KMC3S050-15
0.71 0.64 0.57 0.50 0.42 0.39 0.35 0.31 0.25
KMC3S075 1.14 1.01 0.88 0.75 0.65 0.59 0.54 0.49 0.41
KMC3S100 1.45 1.31 1.15 1.00 0.84 0.77 0.69 0.61 0.48
KMC3S110 1.64 1.46 1.30 1.06 0.92 0.83 0.80 0.65 0.52
KMC3S150 2.18 1.94 1.72 1.50 1.28 1.17 1.06 0.96 0.77
KMC3S200 3.56 3.08 2.60 2.00 1.79 1.64 1.50 1.36 1.14
1206 Series
Percentage of Rated Current (%)
Temperature (℃)
Polymer PTC Resettable Fuse：
：：
：KMC Series
SMD Type
THINKING ELECTRONIC INDUSTRIAL Co., LTD.
9
www.thinking.com.tw
2009.12
All specifications are subject to change without notice.
Thermal Derating Chart –Ihold / Itrip (Amps)
Peroentage of Rated Current(%)
Ambient Operation Temperature
Model -40℃ -20℃ 0℃ 23℃ 40℃ 50℃ 60℃ 70℃ 85℃
KMC4S005 0.08 0.07 0.06 0.05 0.04 0.04 0.03 0.03 0.02
KMC4S010 0.16 0.14 0.12 0.10 0.08 0.07 0.06 0.05 0.03
KMC4S020 0.29 0.26 0.22 0.20 0.16 0.14 0.13 0.11 0.08
KMC4S035 0.47 0.45 0.4 0.35 0.33 0.28 0.24 0.21 0.18
KMC4S050 0.76 0.67 0.58 0.50 0.43 0.40 0.36 0.32 0.28
KMC4S075 1.00 0.97 0.86 0.75 0.64 0.59 0.54 0.48 0.40
KMC4S110 1.69 1.48 1.29 1.10 0.88 0.76 0.65 0.57 0.43
KMC4S150 2.13 1.92 1.71 1.50 1.26 1.14 1.01 0.89 0.71
KMC4S175 2.80 2.45 2.10 1.70 1.55 1.45 1.35 1.25 1.10
1210 Series
Percentage of Rated Current (%)
Temperature (℃)
Polymer PTC Resettable Fuse：
：：
：KMC Series
SMD Type
THINKING ELECTRONIC INDUSTRIAL Co., LTD.
10
www.thinking.com.tw
2009.12
All specifications are subject to change without notice.
Thermal Derating Chart- Ihold/ Itrip(Amps)
Ambient Operation Temperature
Model -40℃ -20℃ 0℃ 23℃ 40℃ 50℃ 60℃ 70℃ 85℃
KMC5S010 0.16 0.14 0.12 0.10 0.08 0.07 0.06 0.05 0.03
KMC5S014 0.23 0.19 0.17 0.14 0.12 0.10 0.09 0.08 0.06
KMC5S020 0.29 0.26 0.23 0.20 0.17 0.15 0.14 0.12 0.10
KMC5S035 0.50 0.45 0.40 0.35 0.29 0.26 0.24 0.21 0.19
KMC5S050 0.77 0.68 0.59 0.50 0.44 0.40 0.37 0.33 0.29
KMC5S075 1.15 1.01 0.88 0.75 0.65 0.60 0.55 0.49 0.43
KMC5S075-24
1.06 0.95 0.84 0.75 0.60 0.55 0.50 0.45 0.37
KMC5S075-33
1.10 1.00 0.88 0.75 0.66 0.60 0.80 0.10 0.60
KMC5S110 1.59 1.43 1.26 1.10 0.95 0.87 0.80 0.71 0.60
KMC5S110-16
1.58 1.43 1.27 1.10 0.95 0.85 0.77 0.71 0.58
KMC5S110-24
1.55 1.40 1.25 1.10 0.93 0.83 0.73 0.63 0.50
KMC5S110-33
1.55 1.40 1.25 1.10 0.93 0.83 0.73 0.63 0.50
KMC5S125 2.00 1.75 1.52 1.25 1.00 0.95 0.90 0.75 0.53
KMC5S125-16
2.00 1.75 1.52 1.25 1.00 0.95 0.90 0.75 0.53
KMC5S150 2.30 2.03 1.76 1.50 1.25 1.10 1.00 0.80 0.76
KMC5S150-12
2.04 1.88 1.68 1.50 1.25 1.10 1.00 0.80 0.60
KMC5S150-24
2.05 1.87 1.67 1.50 1.25 1.08 0.95 0.77 0.60
KMC5S160 2.27 2.05 1.83 1.60 1.35 1.25 1.15 1.00 0.85
KMC5S200 3.08 2.71 2.35 2.00 1.80 1.60 1.50 1.07 0.80
KMC5S260 4.00 3.52 3.06 2.60 2.34 2.08 1.95 1.39 1.04
KMC5S300 4.15 3.76 3.46 3.00 2.55 2.28 2.01 1.61 1.33
1812 Series
Percentage of Rated Current (%)
Temperature (℃)
Polymer PTC Resettable Fuse：
：：
：KMC Series
SMD Type
THINKING ELECTRONIC INDUSTRIAL Co., LTD.
11
www.thinking.com.tw
2009.12
All specifications are subject to change without notice.
Recommended Soldering Condition
IR-Reflow Soldering Profile
Recommended Soldering Pad Dimensions (Nominal)
Unit：mm
SIZE A B C
KMC3S 2.00 1.00 1.90
KMC4S 2.00 1.00 2.80
KMC5S 3.45
1.78
3.50
Temperature
3℃/sec
(max.) 60~180
sec 20~40
sec
260
℃
150~200℃
Tamb
3℃/sec
(max.)
6℃/sec
(max.)
217℃
60 ~150 sec
8 min Max
t
Time
B B
A
C
Preheating
Peak Temp
Cooling
Polymer PTC Resettable Fuse：
：：
：KMC Series
SMD Type
THINKING ELECTRONIC INDUSTRIAL Co., LTD.
12
www.thinking.com.tw
2009.12
All specifications are subject to change without notice.
Reliability
Item Standard Test conditions/Methods Specifications
Passive Aging IEC60738-1 85±5℃, 1000±24hrs ±10％ typical resistance change
Humidity Aging
Specification
Standard 85±5℃, 80~85%RH, 100±5hrs ±5％ typical resistance change
Rapid Change of
Temperature IEC60738-1 85±5/-40±5℃, 20 cycles -33% typical resistance change
Vmax,120% Imax ,50 cycles
Overload Endurance UL1434 + Vmax,300% Itrip ,6000 cycles No arcing or burring
Trip Endurance UL1434 Vmax, Itrip≦ I≦Imax , 1000±24hrs
No arcing or burring
Polymer PTC Resettable Fuse：
：：
：KMC Series
SMD Type
THINKING ELECTRONIC INDUSTRIAL Co., LTD.
13
www.thinking.com.tw
2009.12
All specifications are subject to change without notice.
Package
Taping Specification
1206 Type
For KMC3S005, KMC3S010, KMC3S050-15, KMC3S100, KMC3S110, KMC3S150, KMC3S200
For KMC3S012, KMC3S016, KMC3S020, KMC3S025, KMC3S035, KMC3S050, KMC3S075
1210 Type
Polymer PTC Resettable Fuse：
：：
：KMC Series
SMD Type
THINKING ELECTRONIC INDUSTRIAL Co., LTD.
14
www.thinking.com.tw
2009.12
All specifications are subject to change without notice.
1812 Type
For KMC5S035, KMC5S050, KMC5S075, KMC5S110, KMC5S125, KMC5S150, KMC5S160, KMC5S200
For KMC5S010, KMC5S014, KMC5S020, KMC5S075-24, KMC5S075-33, KMC5S110-16, KMC5S110-24,
KMC5S110-33, KMC5S125-16, KMC5S150-12, KMC5S150-24, KMC5S260, KMC5S300
Quantity
Type Quantity (pcs/reel)
1206
( For KMC3S012、KMC3S016、KMC3S020、
KMC3S025、KMC3S035、KMC3S050、KMC3S075)
5000
1206
(others)
2500
1210 3000
Type Quantity (pcs/reel)
1812
( For KMC5S035、KMC5S050、KMC5S075、KMC5S110、
KMC5S125、KMC5S150、KMC5S160、 KMC5S200)
2000
1812
(others)
1000
Polymer PTC Resettable Fuse：
：：
：KMC Series
SMD Type
THINKING ELECTRONIC INDUSTRIAL Co., LTD.
15
www.thinking.com.tw
2009.12
All specifications are subject to change without notice.
Storage Conditions of Products
Storage Conditions：
1.Storage Temperature ：-10 ℃~+ 40 ℃
2.Relative humidity： ≦75%RH
3.Thermistors must be kept away from sunlight and stored in a non-corrosive atmosphere.
Period of Storage ：1 year
Cross Reference
Size TKS Raychem Polytronics Bourns Littelfuse
KMC3S005 -------- -------- -------- --------
KMC3S010 -------- -------- -------- --------
KMC3S012 nanoSMDC012F SMD1206P012TF MF-NSMF012 1206L 012
KMC3S016 nanoSMDC016F SMD1206P016TF -------- 1206L 016
KMC3S020 nanoSMDC020F SMD1206P020TF/24 MF-NSMF020 1206L 020-C
KMC3S025 -------- SMD1206P025TF -------- 1206L 025-C
KMC3S035 nanoSMDC035F SMD1206P035TF/16 MF-NSMF035 1206L 035/16
KMC3S050 -------- SMD1206P050TF -------- 1206L 050-C
KMC3S050-15 nanoSMDC050F/13.2 SMD1206P050TF/15 MF-NSMF050 1206L 050/15
KMC3S075 nanoSMDC075F SMD1206P075TF MF-NSMF075 1206L 075-C
KMC3S100 -------- -------- -------- 1206L 100
KMC3S110 nanoSMDC110F SMD1206P110TF MF-NSMF110 1206L 110
KMC3S150 nanoSMDC150F SMD1206P150TF MF-NSMF150 1206L 150-C
1206
KMC3S200 nanoSMDC200F SMD1206P200TF MF-NSMF200 --------
KMC4S005 microSMD005F SMD1210P005TF MF-USMF 005 1210L005
KMC4S010 microSMD010F SMD1210P010TF MF-USMF 010 1210L010
KMC4S020 ------ SMD1210P020TF MF-USMF 020 1210L020
KMC4S035 microSMD035F SMD1210P035TF MF-USMF 035 1210L035
KMC4S050 microSMD050F SMD1210P050TF MF-USMF 050 1210L050
KMC4S075 microSMD075F SMD1210P075TF MF-USMF 075 1210L075
KMC4S110 microSMD110F SMD1210P110TFT MF-USMF 110 1210L110
KMC4S150 microSMD150F SMD1210P150TFT MF-USMF 150 1210L150
1210
KMC4S175 ------ SMD1210P175TF MF-USMF 175X ------
Polymer PTC Resettable Fuse：
：：
：KMC Series
SMD Type
THINKING ELECTRONIC INDUSTRIAL Co., LTD.
16
www.thinking.com.tw
2009.12
All specifications are subject to change without notice.
Size TKS Raychem Polytronics Bourns Littelfuse
KMC5S010 ------ SMD1812P010TF MF-MSMF 010 1812L 010
KMC5S014 miniSMDC014F SMD1812P014TF MF-MSMF 014 1812L 014
KMC5S020 miniSMDC020F SMD1812P020TF MF-MSMF 020 1812L 020
KMC5S035 ------ ------ ------ ------
KMC5S050 miniSMDC050F SMD1812P050TF MF-MSMF 050 1812L 050-C
KMC5S075 miniSMDC075F SMD1812P075TF MF-MSMF 075 1812L 075-C
KMC5S075-24 miniSMDC075F/24 SMD1812P075TF/24 MF-MSMF 075/24
1812L 075/24
KMC5S075-33 ------ SMD1812P075TF/33 ------ 1812L 075/33
KMC5S110 miniSMDC110F SMD1812P110TF MF-MSMF 110 1812L 110-C
KMC5S110-16 miniSMDC110F/16 SMD1812P110TF/16 MF-MSMF 110/16
1812L 110/16
KMC5S110-24 miniSMDC110F/24 SMD1812P110TF/24 ------ ------
KMC5S110-33 ------ SMD1812P110TF/33 ------ 1812L 110/33
KMC5S125 miniSMDC125F SMD1812P125TF/6,4L MF-MSMF 125 1812L 125/6
KMC5S125-16 miniSMDC125F/16 SMD1812P125TF/16 ------ 1812L 125-C
KMC5S150 miniSMDC150F SMD1812P150TF/8 MF-MSMF 150 1812L 150-C
KMC5S150-12 miniSMDC150F/12 SMD1812P150TF/12 ------ 1812L 150/12
KMC5S150-24 miniSMDC150F/24 SMD1812P150TF/24 MF-MSMF 150/24X
1812L 150/24
KMC5S160 miniSMDC160F SMD1812P160TF/8(4L) MF-MSMF 160 1812L 160-C
KMC5S200 miniSMDC200F SMD1812P200TFT MF-MSMF 200 1812L 200-C
KMC5S260 miniSMDC260F SMD1812P260TFT MF-MSMF 260 1812L 260-C
1812
KMC5S300 ------ SMD1812P300TF ------ ------
