Positive Thermal Coefficent Diodes
SMD2018P030~200 Series
The SMD2018 Series PTC provides surface mount overcurrent protection for applications where space is at a
premium and resettable protection is desired.
Features
• RoHS compliant, lead-free and halogen-free
• Fast response to fault currents
• Compact design saves board space
• Low resistance
• Low-profile
• Compatible with high temperature solders
ROHS
Applications
• USB peripherals
• Disk drives
• CD-ROMs
• Plug and play protection for motherboards
and peripherals
• Mobile phones - battery and port protection
• Disk drives
• PDAs / digital cameras
• Game console port protection
Dimension
MARKING CODE VARIES
WITH AMPERAGE RATING
(See Electrical Characteristic Table)
SHOWN IS 1.0AMP RATING
1.5
A
Top
View
N
B
C
N
Bottom
View
4.6
Side
View
D
Bottom
View
N
ModelD
3.4
A
E
1.5
B
C
D
Min.
Max.
Min.
Max.
Min.
Max.
Min.
SMD2018P030TF
4.72
5.44
4.22
4.93
0.60
1.10
0.30
SMD2018P050TF
4.72
5.44
4.22
4.93
0.60
1.10
0.30
SMD2018P100TF
4.72
5.44
4.22
4.93
0.45
0.80
0.30
SMD2018P100TF/33
4.72
5.44
4.22
4.93
0.45
0.80
0.30
SMD2018P150TF
4.72
5.44
4.22
4.93
0.45
0.80
0.30
SMD2018P200TF
4.72
5.44
4.22
4.93
0.40
0.80
0.30
All data is subject to change,Please check our data sheets at www ruilon com for updates.
©2012 RuiLong Yuan,Inc.
PTC 01
Electriacl Characteristics
Maximum Time
To Trip
Current
Time
(A)
(Sec.)
Ihold
Itrip
Vmax
Imax
Pd
max.
(A)
(A)
V(dc)
(A)
(W)
SMD2018P030TF
0.30
0.60
60
100
0.9
1.5
SMD2018P050TF
0.55
1.20
60
100
1.0
SMD2018P100TF
1.10
2.20
15
100
SMD2018P100TF/33
1.10
2.20
33
SMD2018P150TF
1.50
3.00
SMD2018P200TF
2.00
4.20
Type Number
Resistance
R min
(Ω)
R1max
(Ω)
3.0
0.50
2.30
2.5
3.0
0.20
1.00
1.1
8.0
0.4
0.06
0.36
100
1.1
8.0
0.4
0.06
0.36
15
100
1.1
8.0
0.8
0.05
0.17
10
100
1.1
8.0
2.4
0.03
0.10
Ihold = Hold current: maximum current device will pass without tripping in 20°C still air.
Itrip = Trip current: minimum current at which the device will trip in 20°C still air.
Vmax = Maximum voltage device can withstand without damage at rated current (Imax)
Imax = Maximum fault current device can withstand without damage at rated voltage (Vmax)
Pd = Power dissipated from device when in the tripped state at 20°C still air.
Rmin = Minimum resistance of device in initial (un-soldered) state.
Thermal Derating Chart-IH(A)
Maximum ambient operating temperature (Tmao) vs. hold current (Ihold)
Model
-40°C
-20°C
0°C
25°C
40°C
50°C
60°C
70°C
85°C
SMD2018P030TF
0.48
0.42
0.35
0.30
0.24
0.21
0.17
0.15
0.10
SMD2018P050TF
0.87
0.77
0.67
0.55
0.46
0.41
0.36
0.31
0.23
SMD2018P100TF
1.71
1.52
1.32
1.10
0.94
0.84
0.74
0.64
0.50
SMD2018P100TF/33
1.71
1.52
1.32
1.10
0.94
0.84
0.74
0.64
0.50
SMD2018P150TF
2.38
2.10
1.82
1.50
1.27
1.13
0.99
0.85
0.64
SMD2018P200TF
2.95
2.65
2.35
2.00
1.74
1.59
1.44
1.29
1.06
Thermal Deratin g Cu r v e
Typ ical Time-To-Tri p At 25° C
Derating Curves for SMD2018 Series
Average Time Current Curves
Percentage of Derated Current
160
050
100
140
10
Time In Second
120
100
80
60
40
100
1
150
0.1
200
0.01
20
0.001
0
-40
-20
0
20
40
Temperature (°C)
PTC 02
60
80
133
0.1
1
10
Current In Amperes
All data is subject to change,Please check our data sheets at www ruilon com for updates.
100
030
©2012 RuiLong Yuan,Inc.
Temperature(°C)
Recommended Solder Reflow Conditions
300
250
200
190
160
100
0
Preheating
Soldering
Cooling
•Recommended reflow methods:IR, vapor phase oven, hot air oven.
•Devices are not designed to be wave soldered to the bottom side
of the board.
•Recommended maximum paste thickness is 0.25 mm (0.010 inch).
•Devices can be cleaned using standard method and solvents.
Note:If reflow temperatures exceed the recommended profile,
devices may not meet the performance requirements.
60-120
sec.
120
sec.
30-60
sec.
Tape And Reel S pecifications (mm )
Governing Specifications
W
P0
P1
P2
A0
B0
B1max.
D0
F
E1
E2min.
Tmax.
T1max.
K0
Leader min.
Trailer min.
Reel Dimensions
A max.
N min.
W1
W 2max.
EIA 481-2
12.0 ± 0.20
4.0 ± 0.10
8.0 ± 0.10
2.0 ± 0.05
4.40 ± 0.10
5.50 ± 0.10
8.2
1.5 + 0.1, -0.0
5.5 ± 0.05
1.75 ± 0.10
10.25
0.6
0.1
1.36 ± 0.1
390
160
EIA Tape Com ponent Dimentions
P0
T
Embossment
P2
E1
Cover tape
A0
B1
F
K0
B0
T1
P1
W
E2
EIA Reel Dimentions
W2(measured at hub)
178
50
12.4 + 2.0, -0.0
18.4
A
Stora ge And Handlin g
Cover tape
• Storage conditions:40°C max, 70% R.H.
• Devices may not meet specified performance
if storage conditions are exceeded.
Carrier tape
Embossed cavity
Or d er In f o r m at i o n
D0
SMD2018
Product name
050
Hold
Size 5045 mm / 2018 mils
Current
SMD:surface mount device
0.50A
0
N(hub dia.)
W1(measured at hub)
Pac k agin g
Tape & Reel Quantity
030, 050 1,500 pcs/reel
100, 100-33V, 150, 200
2,500 pcs/reel
Tape & reel packaging per EIA481-1
All data is subject to change,Please check our data sheets at www ruilon com for updates.
©2012 RuiLong Yuan,Inc.
PTC 03
RUILONG.YUAN CO.,LTD
Tel: +86- 0755-82908296
Fax: +86- 0755-82908002
Email: jack@ruilon.com
Website: http://www.ruilon.com
RuiLongYuan Electronics are trademarks.
Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each
product selected for their own applications. RUILONYUAN Electronics reserves the right to change or update, without notice, any information
contained in this publication; to change, without notice, the design, construction, processing, or specification of any product; and to discontinue
or limit production or distribution of any product. This publication supersedes and replaces all information previously supplied. Without
expressed or written consent by an officer of RUILONYUAN Electronics, RUILONYUAN Electronics does not authorize the use of any of its
products as components in nuclear facility applications, aerospace, or in critical life support devices or systems. RUILONYUAN Electronics
expressly disclaims all implied warranties regarding the information contained herein, including, but not limited to, any implied warranties of
merchantability or fitness for a particular purpose. RUILONYUAN Electronics’ only obligations are those in the RUILONYUAN Electronics
Standard Terms and Conditions of Sale and in no case will RUILONYUAN Electronics be liable for any incidental, indirect, or consequential
damages.
PTC 04
All data is subject to change,Please check our data sheets at www ruilon com for updates.
©2012 RuiLong Yuan,Inc.
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