ShenZhen JinRui Electronic Material Co.,Ltd
ShenZhen JinRui Electronic Material Co.,Ltd
Add：Jinke Industry Park ,No. 310,Wuhe Road ,Guanlan,Longhua,Shenzhen ,Guangdong.
TEL：0755-26546327 29356619 FAX：0755-26546562 Web Site：www.jkpptc.com E-mail:customer@jkpptc.com
Specifications are subject to change without notice
！
S
urface Mountable PTC Resettable Fuse: JK-SMD0603 Series
Features：
² RoHS Compliant ＆ Halogen Free
² faster tripping, 0603 Dimension, Surface mountable, Solid state
² Operation Current: 0.03A~0.50A
² Maximum Voltage: 6V~30Vdc
² Operating Temperature：-40℃ TO 85℃
Product Dimensions
Pig.1
Unit ：mm
Part Number Marking
A B C D E
Min Max Min Max Min Max Min
Max
MAX
JK-SMD0603-003 - 1.45 1.85 0.65 1.05 0.40 0.90 0.15 0.50 0.40
JK-SMD0603-004 - 1.45 1.85 0.65 1.05 0.40 0.90 0.15 0.50 0.40
JK-SMD0603-005 1 1.45 1.85 0.65 1.05 0.40 0.75 0.15 0.50 0.40
JK-SMD0603-010 1 1.45 1.85 0.65 1.05 0.40 0.75 0.15 0.50 0.40
JK-SMD0603-020 2 1.45 1.85 0.65 1.05 0.40 0.75 0.15 0.50 0.40
JK-SMD0603-025 2 1.45 1.85 0.65 1.05 0.40 0.75 0.15 0.50 0.40
JK-SMD0603-030 3 1.45 1.85 0.65 1.05 0.40 0.75 0.15 0.50 0.40
JK-SMD0603-035 3 1.45 1.85 0.65 1.05 0.40 0.75 0.15 0.50 0.40
JK-SMD0603-040 5 1.45 1.85 0.65 1.05 0.50 1.20 0.15 0.50 0.40
JK-SMD0603-050 5 1.45 1.85 0.65 1.05 0.50 1.20 0.15 0.50 0.40
Thermal Derating Chart-IH （A）
Part number
Maximum ambient operating temperatures（℃）
-40 -20 0 25 40 50 60 70 85
JK-SMD0603-003
0.042
0.038
0.035
0.03
0.026
0.021
0.018
0.015
0.011
JK-SMD0603-004
0.056
0.05
0.046
0.04
0.034
0.028
0.024
0.02
0.014
Terminal pad materials :Tin-Plated Nickle-copper
Terminal pad solderability : Meets EIA specification
RS 186-9E and ANSI/J-STD-002 Category 3.
ShenZhen JinRui Electronic Material Co.,Ltd
ShenZhen JinRui Electronic Material Co.,Ltd
Add：Jinke Industry Park ,No. 310,Wuhe Road ,Guanlan,Longhua,Shenzhen ,Guangdong.
TEL：0755-26546327 29356619 FAX：0755-26546562 Web Site：www.jkpptc.com E-mail:customer@jkpptc.com
Specifications are subject to change without notice
！
JK-SMD0603-005
0.07 0.063
0.058
0.05 0.043
0.035
0.03 0.025
0.018
JK-SMD0603-010
0.14 0.125
0.115
0.10 0.085
0.07 0.06 0.05 0.035
JK-SMD0603-020
0.28 0.25 0.23 0.20 0.17 0.14 0.12 0.10 0.07
JK-SMD0603-025
0.35
0.31
0.29
0.25
0.21
0.18
0.15
0.13
0.09
JK-SMD0603-030
0.42
0.38
0.35
0.30
0.26
0.21
0.18
0.15
0.11
JK-SMD0603-035
0.47 0.44 0.39 0.35 0.30 0.27 0.24 0.20 0.14
JK-SMD0603-040
0.54
0.50
0.45
0.40
0.34
0.31
0.27
0.23
0.16
JK-SMD0603-050
0.67
0.63
0.56
0.50
0.43
0.39
0.34
0.29
0.20
Electrical Characteristic
Part Number
V
max
I
max
I
hold
I
trip
P
d
Maximum time
to trip
Resistence
(Vdc) (A) (A) (A)
Max.
(W)
Current
Time
Ri
min
R1
max
(A) (Sec)
(Ω) (Ω)
JK-SMD0603-003 30.0 20 0.03 0.09 0.50 0.15 1.00
6.0 65.00
JK-SMD0603-004 24.0 20 0.04 0.12 0.50 0.2 1.00
4.0 45.00
JK-SMD0603-005 24.0 20 0.05 0.15 0.50 0.25 1.00
3.0 35.00
JK-SMD0603-010 15.0 40 0.10 0.30 0.50 0.5 1.00
0.9 8.00
JK-SMD0603-020 9.0 40 0.20 0.50 0.50 1.00 0.60
0.55
3.50
JK-SMD0603-025 9.0 40 0.25 0.55 0.50 8.0 0.08
0.500
3.00
JK-SMD0603-030 6.0 40 0.30 0.70 0.50 8.0 0.10
0.300
2.00
JK-SMD0603-035 6.0 40 0.35 0.75 0.50 8.0 0.10
0.200
1.400
JK-SMD0603-040 6.0 40 0.40 0.80 0.50 8.0 0.10
0.20
0.900
JK-SMD0603-050 6.0 40 0.50 1.00 0.50 8.0 0.10
0.100
0.800
Part Numbering System
JK- SMD0603- □□□
Test Procedures And Requirements
Test Test Conditions Accept/Reject Criteria
Resistance In still air @ 25℃ R
min
≤R≤R
max
Time to Trip Specified current，V
max
，25℃
T
≤
maximum Time to Trip
Hold Current 30min，at I
H
No trip
Trip Cycle Life Vmax，Imax，100cycles No arcing or burning
Trip Endurance Vmax，1 hours No arcing or burning
Physical Characteristics and Environmental Specifications
Holding current Rating
0603 Dimension Surface Mount Device
JK mark