Limiting Inrush Current

SCK Series
NTC Power Thermistor for
Limiting Inrush Current
MERITEK
RoHS
FEATURES
 Body size: Ф5mm ~ Ф30mm
 Radial lead resin coated
 High power rating
 Wide resistance range
 Cost effective
 Operating temperature range:
UL E223037
Ф5mm: -40ºC~150ºC
Ф8~Ф10mm: -40ºC~170ºC
Ф13~Ф30mm: -40ºC~200ºC
APPLICATION
 Switching mode power supply
 Electric motor
 Transformer ,Adapter
 Projector
 Halogen lamp
 LED driver circuit
PART NUMBER SYSTEM
Ф5~Ф15mm
SCK
Meritek Series
Element Size
Code
05
Ф5mm
08
10
3 M
Y TR
Package
08
Ф8mm
Code
10
13
15
Ф10mm Ф13mm Ф15mm
Blank
Bulk
TR
Tape&Reel
Lead Type
Code
Zero Power Resistance(R25) @ 25ºC(Ω)
2~3 significant digits
Max. Steady State Current @25ºC(A)
Blank
Straight
Y
Kinked Y
L
Kinked L
M
±20%
N
±25%
Tolerance of R25
Code
L
±15%
Ф20~Ф30mm
SCK
Meritek Series
Element Size
Code
20
Ф20mm
20
10
M
Y
Lead Type
25
Ф25mm
Code
30
Ф30mm
Blank
Straight
Y
Kinked Y
L
Kinked L
M
±20%
N
±25%
Tolerance of R25
Zero Power Resistance @ 25ºC(Ω)
2~3 significant digits
Code
L
±15%
SPECIFICATIONS
Part number
SCK05052□
SCK05081□
SCK05101□
SCK05121□
SCK0520X3□
SCK08042□
SCK084R72□
SCK08053□
SCK08063□
SCK08073□
SCK08082□
SCK08102□
SCK08152□
SCK08201□
SCK0830X□
SCK10015□
SCK101R35□
SCK101R55□
SCK102R55A□
SCK10035□
Zero power resistance
R25(Ω) @25ºC
5
8
10
12
20
4
4.7
5
6
7
8
10
15
20
30
1
1.3
1.5
2.5
3
Max. current
Imax(A) @25ºC
2
1
1
1
0.3
2
2
3
3
3
2
2
2
1
0.5
5
5
5
5
5
Residual resistance
Rlmax(Ω) @25ºC & Imax
0.429
1.089
1.126
1.184
5.560
0.441
0.445
0.261
0.283
0.287
0.520
0.542
0.548
1.544
4.094
0.091
0.095
0.101
0.120
0.127
Recommend capacitance
Cth(uF) @240Vac
100
68
100
68
100
220
220
220
220
220
220
220
100
100
100
470
330
330
470
560
SCK Series
NTC Power Thermistor for
Limiting Inrush Current
MERITEK
RoHS
SCK10044□
SCK10054□
SCK106R83□
4
5
6.8
4
4
3
0.161
0.180
0.270
560
470
330
Part number
SCK10083□
SCK10103□
SCK10123□
SCK10133□
SCK10152X□
SCK10162X□
SCK10202□
SCK10222□
SCK10252□
SCK10302□
SCK10472□
SCK10502□
SCK10801□
SCK101001□
SCK101201□
SCK13013□
SCK131R37□
SCK132R56□
SCK13045□
SCK134R74□
SCK13055□
SCK13074□
SCK13084□
SCK13104□
SCK13124□
SCK13153□
SCK13163□
SCK13183□
SCK13203□
SCK150R78A□
SCK15018□
SCK151R38□
SCK151R58□
SCK15028□
SCK152R58□
SCK15037□
SCK15046□
SCK15056□
SCK15065□
SCK15075□
SCK15085□
SCK15105□
SCK15125□
SCK15154□
SCK15164□
SCK15184□
SCK15204□
SCK15224□
SCK15253□
SCK15303□
SCK15333□
SCK15403□
SCK15473□
SCK15802X□
SCK151202□
SCK200R7□
SCK201R0□
SCK201R5□
SCK202R0□
SCK202R5□
Zero power resistance
R25(Ω) @25ºC
8
10
12
13
15
16
20
22
25
30
47
50
80
100
120
1
1.3
2.5
4
4.7
5
7
8
10
12
15
16
18
20
0.7
1
1.3
1.5
2
2.5
3
4
5
6
7
8
10
12
15
16
18
20
22
25
30
33
40
47
80
120
0.7
1
1.5
2
2.5
Max. current
Imax(A) @25ºC
3
3
3
3
2.5
2.5
2
2
2
2
2
2
1
1
1
3
7
6
5
4
5
4
4
4
4
3
3
3
3
8
8
8
8
8
8
7
6
6
5
5
5
5
5
4
4
4
4
4
3
3
3
3
3
2.5
2
15
13
10.5
10
9
Residual resistance
Rlmax(Ω) @25ºC & Imax
0.278
0.297
0.301
0.356
0.442
0.471
0.646
0.659
0.674
0.700
0.720
0.813
2.236
2.318
2.406
0.174
0.070
0.094
0.132
0.168
0.166
0.184
0.206
0.217
0.230
0.343
0.348
0.365
0.410
0.051
0.054
0.064
0.068
0.078
0.086
0.091
0.117
0.121
0.159
0.161
0.165
0.178
0.185
0.261
0.265
0.273
0.283
0.308
0.425
0.461
0.484
0.511
0.517
0.693
1.010
0.035
0.034
0.041
0.062
0.083
Recommend capacitance
Cth(uF) @240Vac
330
330
470
330
330
330
330
220
330
330
330
330
220
200
200
560
470
560
560
560
560
470
470
470
560
560
560
560
470
680
680
680
800
680
680
820
800
820
680
820
680
820
680
820
820
680
820
560
680
680
560
680
680
560
560
1000
SCK Series
NTC Power Thermistor for
Limiting Inrush Current
MERITEK
RoHS
SCK203R0□
SCK204R0□
3
4
8.5
8
0.078
0.080
Part number
SCK204R7□
SCK205R0□
SCK206R0□
SCK206R8□
SCK207R0□
SCK208R0□
SCK20100□
SCK20120□
SCK20130□
SCK20150□
SCK20160□
SCK20180□
SCK20200□
SCK251R0□
SCK251R5□
SCK252R0□
SCK252R5□
SCK253R0□
SCK254R0□
SCK254R7□
SCK255R0□
SCK256R8□
SCK257R0□
SCK258R0□
SCK25100□
SCK25120□
SCK25150□
SCK25180□
SCK25200□
SCK301R0□
SCK301R5□
SCK302R0□
SCK302R5□
SCK303R0□
SCK304R0□
SCK304R7□
SCK305R0□
SCK306R8□
SCK307R0□
SCK308R0□
SCK30100□
SCK30120□
SCK30150□
SCK30180□
SCK30200□
Zero power resistance
R25(Ω) @25ºC
4.7
5
6
6.8
7
8
10
12
13
15
16
18
20
1
1.5
2
2.5
3
4
4.7
5
6.8
7
8
10
12
15
18
20
1
1.5
2
2.5
3
4
4.7
5
6.8
7
8
10
12
15
18
20
Max. current
Imax(A) @25ºC
7.5
7.5
7
6.5
6.5
6
5.5
5
5
4.5
4.5
4
4
20
18.5
18
15
14.5
14
13
12
10.5
10
9
8
7.5
6.5
5.5
5
30
25
23
18
17
16
15
14
12
11.5
10.5
10
9
8
7
6
Residual resistance
Rlmax(Ω) @25ºC & Imax
0.114
0.118
0.120
0.130
0.132
0.161
0.196
0.197
0.213
0.258
0.276
0.280
0.306
0.020
0.023
0.025
0.032
0.042
0.044
0.052
0.061
0.082
0.092
0.115
0.141
0.164
0.210
0.231
0.270
0.016
0.020
0.022
0.030
0.035
0.048
0.055
0.057
0.077
0.084
0.100
0.115
0.142
0.175
0.210
0.233
Part number
SCK05052□
SCK05081□
SCK05101□
SCK05121□
SCK0520X3□
SCK08042□
SCK084R72□
SCK08053□
SCK08063□
SCK08073□
SCK08082□
SCK08102□
SCK08152□
SCK08201□
Max. power rating
Pmax(W) @25ºC
Recommend capacitance
Cth(uF) @240Vac
Dissipation factor Thermal time constant Operating temperature range
δ(mW/ºC)
(second)
TL~TU(ºC)
1.8
≈15
≈17
-40~+150
2.3
≈16
≈38
-40~+170
1000
1200
1500
UL/ cUL
Certified Model No.
SCK-052
SCK-081
SCK-101
SCK-121
SCK-20X3
SCK-042
SCK-4R72
SCK-053
SCK-063
SCK-073
SCK-082
SCK-102
SCK-152
SCK-201
SCK Series
NTC Power Thermistor for
Limiting Inrush Current
Part number
SCK0830X□
SCK10015□
SCK101R35□
SCK101R55□
SCK102R55A□
SCK10035□
SCK10044□
SCK10054□
SCK106R83□
SCK10083□
SCK10103□
SCK10123□
SCK10133□
SCK10152X□
SCK10162X□
SCK10202□
SCK10222□
SCK10252□
SCK10302□
SCK10472□
SCK10502□
SCK10801□
SCK101001□
SCK101201□
SCK13013□
SCK131R37□
SCK132R56□
SCK13045□
SCK134R74□
SCK13055□
SCK13074□
SCK13084□
SCK13104□
SCK13124□
SCK13153□
SCK13163□
SCK13183□
SCK13203□
SCK150R78A□
SCK15018□
SCK151R38□
SCK151R58□
SCK15028□
SCK152R58□
SCK15037□
SCK15046□
SCK15056□
SCK15065□
SCK15075□
SCK15085□
SCK15105□
SCK15125□
SCK15154□
SCK15164□
SCK15184□
SCK15204□
SCK15224□
SCK15253□
SCK15303□
SCK15333□
SCK15403□
SCK15473□
SCK15802X□
SCK151202□
SCK200R7□
SCK201R0□
SCK201R5□
SCK202R0□
Max. power rating
Pmax(W) @25ºC
2.3
MERITEK
Dissipation factor Thermal time constant Operating temperature range
δ(mW/ºC)
(second)
TL~TU(ºC)
≈16
≈38
-40~+170
2.4
≈17
≈43
-40~+170
3.1
≈18
≈16
-40~+200
3.6
≈21
≈75
-40~+200
4.9
≈28
≈113
-40~+200
UL/ cUL
Certified Model No.
SCK-30X
SCK-015
SCK-1R35
SCK-1R55
SCK-2R55A
SCK-035
SCK-044
SCK-054
SCK-6R83
SCK-083
SCK-103
SCK-123
SCK-133
SCK-152X
SCK-162X
SCK-202
SCK-222
SCK-252
SCK-302
SCK-472
SCK-502
SCK-801
SCK-1001
SCK-1201
SCK-013
SCK-1R37
SCK-2R56
SCK-045
SCK-4R74
SCK-055
SCK-074
SCK-084
SCK-104
SCK-124
SCK-153
SCK-163
SCK-183
SCK-203
SCK-0R78A
SCK-018
SCK-1R38
SCK-1R58
SCK-028
SCK-2R58
SCK-037
SCK-046
SCK-056
SCK-065
SCK-075
SCK-085
SCK-105
SCK-125
SCK-154
SCK-164
SCK-184
SCK-204
SCK-224
SCK-253
SCK-303
SCK-333
SCK-403
SCK-473
SCK200R7
SCK201R0
SCK201R5
SCK202R0
SCK Series
NTC Power Thermistor for
Limiting Inrush Current
MERITEK
RoHS
Part number
SCK202R5□
SCK203R0□
SCK204R0□
SCK204R7□
SCK205R0□
SCK206R0□
SCK206R8□
SCK207R0□
SCK208R0□
SCK20100□
SCK20120□
SCK20130□
SCK20150□
SCK20160□
SCK20180□
SCK20200□
SCK251R0□
SCK251R5□
SCK252R0□
SCK252R5□
SCK253R0□
SCK254R0□
SCK254R7□
SCK255R0□
SCK256R8□
SCK257R0□
SCK258R0□
SCK25100□
SCK25120□
SCK25150□
SCK25180□
SCK25200□
SCK301R0□
SCK301R5□
SCK302R0□
SCK302R5□
SCK303R0□
SCK304R0□
SCK304R7□
SCK305R0□
SCK306R8□
SCK307R0□
SCK308R0□
SCK30100□
SCK30120□
SCK30150□
SCK30180□
SCK30200□
Max. power rating
Pmax(W) @25ºC
Dissipation factor Thermal time constant Operating temperature range
δ(mW/ºC)
(second)
TL~TU(ºC)
4.9
≈28
≈113
-40~+200
7.0
≈30
≈130
-40~+200
8.0
≈40
≈190
-40~+200
UL/ cUL
Certified Model No.
SCK202R5
SCK203R0
SCK204R0
SCK204R7
SCK205R0
SCK206R0
SCK206R8
SCK207R0
SCK208R0
SCK20100
SCK20120
SCK20130
SCK20150
SCK20160
SCK20180
SCK20200
SCK251R0
SCK251R5
SCK252R0
SCK252R5
SCK253R0
SCK254R0
SCK254R7
SCK255R0
SCK256R8
SCK257R0
SCK258R0
SCK25100
SCK25120
SCK25150
SCK25180
SCK25200
SCK301R0
SCK301R5
SCK302R0
SCK302R5
SCK303R0
SCK304R0
SCK304R7
SCK305R0
SCK306R8
SCK307R0
SCK308R0
SCK30100
SCK30120
SCK30150
SCK30180
SCK30200
Note 1:  - tolerance of R25
Note 2: Special specifications are available upon request
DIMENSIONS
Straight lead
BT
BD
BH
LK
LL
Series
SCK05
SCK08
SCK10
SCK13
SCK15
SCK20
SCK25
SCK30
BDmax
6.5
9.5
11.5
14.5
16.5
21.5
29
36
LS
4±0.6
5±0.8
5±0.8
7.5±1
7.5±1
7.5±1
7.5±1
7.5±1
LD
0.8±0.02
0.8±0.02
0.8±0.02
0.8±0.02
1.0±0.02
1.0±0.02
1.0±0.02
1.0±0.02
LD
All Dimension in millimeters
LS
BHmax
6.5
9.5
11.5
14.5
16.5
21.5
29.0
36.0
LLmin
31
31
31
30
29
26
25
23
BTmax
5
5
5
6
6
6
7
8
LKmax
3
3
3
3
3
3
3
3
SCK Series
NTC Power Thermistor for
Limiting Inrush Current
MERITEK
RoHS
Y kink lead
BT
Series
SCK05
SCK08
SCK10
SCK13
SCK15
SCK20
SCK25
SCK30
BH
BD
LL
LD
BDmax
6.5
9.5
11.5
14.5
16.5
21.5
29
36
LS
4±0.6
5±0.8
5±0.8
7.5±1
7.5±1
7.5±1
7.5±1
7.5±1
LD
0.8±0.02
0.8±0.02
0.8±0.02
0.8±0.02
1±0.02
1±0.02
1±0.02
1±0.02
BHmax
11.0
13.0
15.0
17.5
19.0
24.5
35.0
42.0
LLmin
29
29
29
27
26
25
22
22
BTmax
5
5
5
6
6
6
7
8
All Dimension in millimeters
LS
L kink lead
TH
LY
BD
LD
LB
BT
LL
LS
Series
SCK08
SCK10
SCK13
SCK15
SCK20
SCK08
SCK10
SCK13
SCK15
SCK20
BDmax
9.5
11.5
14.5
16.5
21.5
LB
7.8±1.0
7.8±1.0
7.8±1.0
9.0±1.0
9.0±1.0
LS
5±0.8
5±0.8
7.5±1
7.5±1
7.5±1
LL
3.5±0.5
3.5±0.5
3.5±0.5
3.5±0.5
3.5±0.5
LD
0.8±0.02
0.8±0.02
0.8±0.02
1±0.02
1±0.02
BTmax
5
5
6
6
6
LY
5.0±0.5
5.0±0.5
5.0±0.5
4.5±0.5
4.5±0.5
THmax
15
17
19
21
26
All Dimension in millimeters
MAX. CURRENT DERATING CURVE
TU: Maximum operating temperature (ºC)
TL: Minimum operating temperature (ºC)
Ta: Ambient temperature
ITa: Maximum current at Ta
Example :
100%
ITa
Imax
assume : Ta=60ºC, TU=200ºC
0
TL
0
25
Ambient temperature (ºC)
TU
SCK Series
NTC Power Thermistor for
Limiting Inrush Current
MERITEK
RoHS
R-T CHARACTERISTIC CURVES
SCK08042~SCK0830X
SCK05052~SCK0520X3
1000
1000
100
Resistance(Ω)
Resistance(Ω)
100
10
10
SCK0830X
SCK08201
SCK08152
SCK08102
SCK08082
SCK08073
SCK08063
SCK08053
SCK084R72
SCK08042
SCK0520X3
1
1
SCK05121
SCK05101
SCK05081
SCK05052
0.1
0.1
-40 -30 -20 -10
0
10
20
30
40
50
60
70
80
90 100 110 120 130 140 150
-40 -30 -20 -10
0
10
20 30
Temperature (℃)
1000
1000
100
100
10
SCK101201
SCK10801
SCK10472
SCK10252
SCK10202
SCK10152X
SCK10123
SCK10083
SCK10054
SCK10035
SCK101R55
SCK10015
0.01
Resistance (Ω)
10000
Resistance (Ω)
80 90 100 110 120 130 140 150 160 170
SCK101R35~SCK101001
SCK10015~SCK101201
0.1
60 70
Temperature (℃)
10000
1
40 50
10
SCK101001
SCK10502
SCK10302
SCK10222
SCK10162X
SCK10133
SCK10103
SCK106R83
SCK10044
SCK102R55A
SCK101R35
1
0.1
0.01
-40 -30 -20 -10
0
10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170
Temperature (℃)
-40 -30 -20 -10
0
10 20
30
40 50
60
70 80
90 100 110 120 130 140 150 160 170
Temperature (℃)
SCK Series
NTC Power Thermistor for
Limiting Inrush Current
MERITEK
RoHS
SCK131R37~SCK13203
1000
100
100
Resistance (Ω)
Resistance (Ω)
SCK13013~SCK13183
1000
10
1
10
1
SCK13183
SCK13203
SCK13153
SCK13163
SCK13104
0.1
SCK13124
0.1
SCK13074
SCK13084
SCK134R74
SCK13055
SCK132R56
SCK13045
SCK13013
SCK131R37
0.01
0.01
-40 -30 -20 -10 0
10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200
Temperature (℃)
Temperature (℃)
SCK15016~SCK15473
SCK150R78A~SCK151202
1000
1000
100
100
Resistance(Ω)
10000
Resistance(Ω)
10000
10
SCK151202
1
10
1
SCK15473
SCK15403
SCK15253
SCK15224
SCK15184
SCK15164
SCK15125
SCK15105
0.1
SCK15065
SCK15075
0.1
SCK15046
SCK15037
SCK15028
SCK151R58
SCK15016
SCK150R78A
0.01
0.01
-40 -30 -20 -10 0
10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200
Temperature (℃)
-40 -30 -20 -10
0
10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200
Temperature (℃)
SCK Series
NTC Power Thermistor for
Limiting Inrush Current
MERITEK
RoHS
SCK151R38~SCK15802X
SCK200R7~SCK20180
1000
1000
100
100
Resistance(Ω)
10000
Resistance(Ω)
10000
10
1
SCK15802X
10
1
SCK20180
SCK20150
SCK20120
SCK208R0
SCK206R8
SCK205R0
SCK204R0
SCK202R5
SCK201R5
SCK200R7
SCK15303
SCK15204
SCK15154
SCK15085
0.1
0.1
SCK15056
SCK152R58
SCK151R38
0.01
0.01
-40 -30 -20 -10
0
10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200
-40 -30 -20 -10
0
Temperature (℃)
Temperature (℃)
SCK251R0~SCK25180
SCK201R0~SCK20200
1000
100
100
Resistance(Ω)
1000
Resistance(Ω)
10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200
10
1
10
1
SCK20200
SCK20160
SCK20130
SCK25180
SCK20100
SCK25120
SCK207R0
0.1
SCK206R0
SCK258R0
0.1
SCK256R8
SCK204R7
SCK254R7
SCK203R0
SCK253R0
SCK202R0
SCK252R0
SCK251R0
SCK201R0
0.01
0.01
-40 -30 -20 -10 0
10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200
Temperature (℃)
-40 -30 -20 -10 0
10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200
Temperature (℃)
SCK Series
NTC Power Thermistor for
Limiting Inrush Current
MERITEK
RoHS
SCK251R5~SCK25200
SCK301R0~SCK30180
100
100
Resistance(Ω)
1000
Resistance(Ω)
1000
10
1
1
SCK25200
SCK30180
SCK25150
SCK30120
SCK25100
0.1
10
SCK257R0
SCK308R0
0.1
SCK306R8
SCK255R0
SCK304R7
SCK254R0
SCK303R0
SCK252R5
SCK302R0
SCK301R0
SCK251R5
0.01
0.01
-40 -30 -20 -10
0
10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200
Temperature (℃)
SCK301R5~SCK30200
Resistance(Ω)
100
10
1
SCK30200
SCK30150
SCK30100
SCK307R0
SCK305R0
SCK304R0
SCK302R5
SCK301R5
0.01
-40 -30 -20 -10
0
10
20 30 40
50 60 70
80 90 100 110 120 130 140 150 160 170 180 190 200
Temperature (℃)
0
10
20
30 40
50
60 70
80
90 100 110 120 130 140 150 160 170 180 190 200
Temperature (℃)
1000
0.1
-40 -30 -20 -10
SCK Series
NTC Power Thermistor for
Limiting Inrush Current
MERITEK
RoHS
V-I CHARACTERISTIC CURVES (REPRESENTATIVE)
SCK05052~SCK0520X3
10
Voltage (V)
5
2
1
0.5
0.2
0.1
0.01
0.02
0.05
0.1
0.2
0.5
1
2
5
10
20
50
100
5
10
20
50
100
Current (A)
SCK08042~SCK08201
10
Voltage (V)
5
2
1
0.5
0.2
0.1
0.01
0.02
0.05
0.1
0.2
0.5
1
Current (A)
2
SCK Series
NTC Power Thermistor for
Limiting Inrush Current
MERITEK
RoHS
SCK10015~SCK10222
10
Voltage (V)
5
2
1
05
4
SC
K
10
1
52
X
0.5
0.1
0.01
5
01
K1
0
SC
SC
K1
0
SC
2R
55
A
K1
0
0.2
0.02
0.05
0.1
0.2
0.5
1
2
5
10
20
50
100
5
10
20
50
100
Current (A)
SCK131R37~SCK13203
10
Voltage (V)
5
2
1
0.5
0.2
0.1
0.01
0.02
0.05
0.1
0.2
0.5
1
Current (A)
2
SCK Series
NTC Power Thermistor for
Limiting Inrush Current
MERITEK
RoHS
SCK151R38~SCK15303
10
Voltage (V)
5
2
1
0.5
0.2
0.1
0.01
0.02
0.05
0.1
0.2
0.5
1
2
5
10
20
50
100
5
10
20
50
100
Current (A)
SCK200R7~SCK20200
10
Voltage (V)
5
2
1
0.5
0.2
0.1
0.01
0.02
0.05
0.1
0.2
0.5
1
Current (A)
2
SCK Series
NTC Power Thermistor for
Limiting Inrush Current
MERITEK
RoHS
SCK251R0~SCK25121
10
Voltage (V)
5
2
1
0.5
0.2
0.1
0.01
0.02
0.05
0.1
0.2
0.5
1
2
5
10
20
50
100
5
10
20
50
100
Current (A)
SCK301R0~SCK30200
10
Voltage (V)
5
2
1
0.5
0.2
0.1
0.01
0.02
0.05
0.1
0.2
0.5
1
Current (A)
2
SCK Series
NTC Power Thermistor for
Limiting Inrush Current
MERITEK
RoHS
SOLDERING RECOMMENDATION
WAVE FLOW SOLDERING PROFILE
Preheating
Soldering
Cooling
Temperature
260℃ Max
Note 2
Note 3
130±20℃
Note 1
Tamb
Time
30~90 sec. ＜1 sec.
Note 1:
Note 2:
Note 3:
(1~3℃)/sec
Approx. 200℃/sec
5℃/sec. (Max)
＜10 sec.
RECOMMENDED REWORKING CONDITIONS WITH SOLDERING IRON

temperature of soldering Iron-tip : 360ºC,max.
soldering time : 3.0 seconds, max.

distance from thermistor : 2.0 mm, min.

RELIABILITY
Item
Tensile strength of terminals
Specifications
no visible damage
Test condition
gradually apply the specified force and keep the
unit fixed for 10±1.0seconds.
Terminal diameter (mm)
0.5<d≤0.8
0.8<d≤1.25
Solderability
Resistance to soldering heat
High temperature storage
Damp heat, steady state
Rapid change of temperature
at least 95% of terminal
electrode is covered by
new solder
|∆R25/R25|≤10%,
no visible damage
|∆R25/R25|≤20%
no visible damage
|∆R25/R25|≤20%
no visible damage
|∆R25/R25|≤20%
no visible damage
Endurance
Insulation test
|∆R25/R25|≤20%
no visible damage
|∆R25/R25|≤20%
no visible damage
no visible damage
≥500 MΩ
Force (kg)
1.0
2.0
apply 245±3ºC, 3±0.3seconds
IEC60068-2-20
apply 260±3ºC, 10±1.0seconds
IEC60068-2-20
Tu±5ºC, 1000±24 hours
IEC60068-2-2
40±2ºC, 90~95% R.H.,1000±24 hours
IEC60068-2-78
the thermal shock conditions shown below shall
be repeated 5 cycles -
IEC60068-2-14
step
1
2
3
4
Maximum current
Standard
IEC60068-2-21
temperature
TL±5.0ºC
room temperature
TU±5.0ºC
room temperature
duration
30±3.0minutes
5.0±3.0minutes
30±3.0minutes
5.0±3.0minutes
25±5ºC, Imax,1000±24 hours
IEC60539-1
25±5ºC, Imax,Cth, ON/OFF- 1min/5min x
1000cycles, Cth = capacitance at 240VAC
1000VDC, 1min
specification
standard
MIL-STD-202FMethod 302
SCK Series
NTC Power Thermistor for
Limiting Inrush Current
MERITEK
RoHS
PACKAGING
TAPING SPECIFICATION
Straight lead type
P
P
P
F
P1
H1
d
W2
H
W1
W
W0
P1
P0
L1
Figure A
h
P1
D0
Figure B
p
p
h
Figure C
T
Taping
Dimension
P0:12.7
P0:15.0
P0
F
P
P1
(Unit: mm)
H
H1
W0
W1
W2
W
△P
△h
L1
D0
T
±0.02
±1
+0.75
/-0.5
Max.
+1/
-0.5
Max.
Max.
Max.
±0.2
±0.2
28
0.8
12
9
3
18
1
2
0.5
4
0.6
A
30
0.8
12
9
3
18
1
2
0.5
4
0.6
A
18
32
0.8
12
9
3
18
1
2
0.5
4
0.6
A
8.95
18
35
0.8
12
9
3
18
1
2
0.5
4
0.6
B
25.4
8.95
18
37
1.0
12
9
3
18
1
2
0.5
4
0.6
B
25.4
8.95
18
42
1.0
12
9
3
18
1
2
0.5
4
0.6
B
4.0
15.0
5.50
18
28
0.8
12
9
3
18
1
2
0.5
4
0.6
A
15.0
5.0
15.0
5.00
18
30
0.8
12
9
3
18
1
2
0.5
4
0.6
A
15.0
5.0
15.0
5.00
18
32
0.8
12
9
3
18
1
2
0.5
4
0.6
A
13
15.0
7.5
30.0
3.75
18
35
0.8
12
9
3
18
1
2
0.5
4
0.6
C
15
15.0
7.5
30.0
3.75
18
37
1.0
12
9
3
18
1
2
0.5
4
0.6
C
20
15.0
7.5
30.0
3.75
18
42
1.0
12
9
3
18
1
2
0.5
4
0.6
C
Disc
Size
±0.3
±1
±1
±0.7
+2/-0
Max.
05
12.7
4.0
12.7
4.35
18
08
12.7
5.0
12.7
3.85
18
10
12.7
5.0
12.7
3.85
13
12.7
7.5
25.4
15
12.7
7.5
20
12.7
7.5
05
15.0
08
10
d
Figure
SCK Series
NTC Power Thermistor for
Limiting Inrush Current
MERITEK
RoHS
Y kink type
P
P
P
F
H1
d
W2
P1
H0
W1
W
W0
L1
P0
P1
D0
P1
Figure A
Figure B
Figure C
p
p
T
(Unit: mm)
Taping
Dimension
P0:12.7
P0:15.0
P0
F
P
P1
H0
H1
d
W0
W1
W2
△P
△h
L1
D0
T
Max.
Max.
Max.
±0.2
±0.2
18
1
2
0.5
4
0.6
A
3
18
1
2
0.5
4
0.6
A
3
18
1
2
0.5
4
0.6
A
9
3
18
1
2
0.5
4
0.6
B
12
9
3
18
1
2
0.5
4
0.6
B
1.0
12
9
3
18
1
2
0.5
4
0.6
B
28
0.8
12
9
3
18
1
2
0.5
4
0.6
A
16
30
0.8
12
9
3
18
1
2
0.5
4
0.6
A
5.00
16
32
0.8
12
9
3
18
1
2
0.5
4
0.6
A
30.0
3.75
16
35
0.8
12
9
3
18
1
2
0.5
4
0.6
C
30.0
3.75
16
37
1.0
12
9
3
18
1
2
0.5
4
0.6
C
30.0
3.75
16
42
1.0
12
9
3
18
1
2
0.5
4
0.6
C
Disc
Size
±0.3
±1
±1
±0.7
±0.5
Max.
±0.02
±1
05
12.7
4.0
12.7
4.35
16
28
0.8
12
9
3
08
12.7
5.0
12.7
3.85
16
30
0.8
12
9
10
12.7
5.0
12.7
3.85
16
32
0.8
12
9
13
12.7
7.5
25.4
8.95
16
35
0.8
12
15
12.7
7.5
25.4
8.95
16
37
1.0
20
12.7
7.5
25.4
8.95
16
42
05
15.0
4.0
15.0
5.50
16
08
15.0
5.0
15.0
5.00
10
15.0
5.0
15.0
13
15.0
7.5
15
15.0
7.5
20
15.0
7.5
+0.75
/-0.5
Max.
W
+1/
-0.5
Figure
SCK Series
NTC Power Thermistor for
Limiting Inrush Current
MERITEK
RoHS
QUANTITY
BULK PACKING
Series
Standard Lead Type
Quantity (pcs/bag)
Cut Lead Type
Quantity (pcs/bag)
L kink Type
Quantity (pcs/bag)
SCK05
250
500
---
SCK08
250
250
200
SCK10
200
250
200
SCK13
100
200
100
SCK15
100
100
100
SCK20
500 (pcs/box)
50
50
SCK25
168 (pcs/box)
168 (pcs/box)
---
SCK30
168 (pcs/box)
168 (pcs/box)
---
REEL PACKING
D1
(mm)
W
(mm)
Quantity
(pcs/reel)
SCK05
2,500
SCK08
1,500
SCK10
SCK13
340±10
31±1
55±1
1,500
D
D
(mm)
D1
Series
750
SCK15
750
SCK20
500
W
AMMO PACKING
Series
Quantity (pcs/box)
SCK05
1,000
SCK08
1,000
SCK10
1,000
SCK13
500
SCK15
500
SCK20
500
WAREHOUSE STORAGE
STORAGE CONDITIONS
1. Storage Temperature: -10℃~+40℃
2. Relative Humidity: ≦75%RH
3. Keep away from corrosive atmosphere and sunlight.
PERIOD OF STORAGE: 1 year
H
W
L
(Unit: mm)
Body Size
L
W
H
Φ5~Φ20
348
275
60