PolySwitch Resettable Devices
– Surface-mount Devices
PolySwitch Resettable Devices
Surface-mount Devices
PolySwitch surface-mount devices are the preferred
circuit protection method for computer, consumer,
multimedia, portable, and automotive electronics
applications.
In an affort to reduce the size and cost of surface-mount
devices, we introduced the miniSMD product series in
1995. Subsequently, we developed the microSMD,
nanoSMD, picoSMD and femtoSMD family of products.
The femtoSMD series reduced the device size to a
1608mm (0603 mils) footprint, one twelfth the size of
the popular miniSMD series.
Recent additions to the PolySwitch surface-mount series
include 3.0A miniSMD 4532mm (1812 mils), 2.0A
nanoSMD 3216mm (1206 mils) and 0.16A femtoSMD
1608mm (0603 mils) devices.
Benefits
• Smaller size saves board space and cost
• Many product choices give engineers more design
flexibility
• Compatible with high-volume electronics assembly
• Assists in meeting regulatory requirements
• Higher voltage ratings allow use in new applications
Features
• RoHS compliant
• Halogen free
(refers to: Br 900ppm, Cl 900ppm, Br+Cl 1500ppm)
• Broadest range of resettable devices available in the
industry
• Current ratings from 0.05 to 3A
• Voltage ratings from 6V computer and electronic
applications to 60V telecom applications
• Agency recognition: UL, CSA, TÜV
• Small footprint
• Fast time-to-trip
• Low resistance
10
Applications
• Computer
• Portable electronics
• Multimedia
• Game machines
• Telephony and broadband
• Mobile phones
• Automotive
• Industrial controls
• Battery
91
Application Selection Table for Surface-mount Devices
• The table below lists PolySwitch surface-mount devices typically used in these applications.
• Specifications for the suggested PolySwitch surface-mount device part numbers can be found in this section.
• Once a part has been selected, the user should evaluate and test each product for the intended application.
PolySwitch Resettable Devices - Key Selection Criteria
Protection Application
AC adapter input power
Battery pack protection
Charger protection
CPU/IC protection
Data acquisition/sensor
DC input/output power
≤6V
≤12V
DDC
Device bay system
DB12, DB20
DB32
Ethernet/LAN
Fan
HDMI
IEEE 802.3af
IEEE-1394
VOIP
power provider
alt. power provider
self-powered
LCD inverter
LCD screen power
LNB (Low Noise Block)
Motor
≤6V
≤13.2V
PS/2 mouse/keyboard
Signal - data communication
≤6V
≤13.2V
≤30V
SCSI
SIM/Smart card reader
Telecom - modem
Telecom - PBX
Temperature sensor
USB
Digital line
Subscriber
CPU
Individual Port
2 port ganged
3 port ganged
OC
OC
Additional Comments
use w/ Zener & triac
Overcurrent
Overvoltage
Small Size
SMD250F
nanoSMDC150F
nanoSMDC050F
nanoSMDC110F
microSMD005F
nanoSMDC075F
miniSMDC075F
nanoSMDC075F
miniSMDC200F
miniSMDC260F
nanoSMDC050F/13.2
microSMD035F
picoSMDC035S
decaSMDC050F/60
SMD100F/33
SMD185F
SMD185F
nanoSMDC050F/13.2
nanoSMDC050F/13.2
SMD075F
nanoSMDC110F
miniSMDC075F
nanoSMDC075F
nanoSMDC075F
miniSMDC050F
SMD030F-2018
nanoSMDC110F
femtoSMDC010F
miniSMDC014F
miniSMDC014F
nanoSMDC050F/13.2
nanoSMDC075F
nanoSMDC150F
miniSMDC200F
Low Resistance
SMD250F
miniSMDC260F
miniSMDC110F/16
nanoSMDC150F
-
nanoSMDC150F
miniSMDC110F/16
nanoSMDC110F
miniSMDC260F
SMD300F
miniSMDC110F/16
microSMD050F
picoSMDC035S
decaSMDC050F/60
SMD185F
SMD185F
SMD185F
miniSMDC110F/16
nanoSMDC050F/13.2
SMD075F
nanoSMDC150F
miniSMDC110F/16
nanoSMDC110F
nanoSMDC075F
miniSMDC075F
SMD075F
nanoSMDC150F
femtoSMDC010F
miniSMDC014F
miniSMDC014F
nanoSMDC075F
nanoSMDC110F
miniSMDC150F
miniSMDC200F
Fast Time-to-trip
(Temperature Protection)
SMD200F
miniSMDE190F
nanoSMDC075F
nanoSMDC075F
microSMD005F
nanoSMDC050F/13.2
miniSMDC075F
nanoSMDC050F/13.2
miniSMDC200F
miniSMDC200F
nanoSMDC075F
microSMD035F
picoSMDC035S
decaSMDC050F/60
SMD100F/33
SMD150F/33
SMD150F/33
nanoSMDC075F
microSMD035F
SMD050F
microSMD075F
miniSMDC075F
nanoSMDC050F/13.2
nanoSMDC075F
miniSMDC020F
SMD050F
nanoSMDC075F
femtoSMDC005F
miniSMDC014F
miniSMDC014F
nanoSMDC050F/13.2
nanoSMDC050F/13.2
miniSMDC125F
miniSMDC200F
10
Note :
This list is not exhaustive. Tyco Electronics welcomes our customers’ input for additional application ideas for PolySwitch resettable devices.
92
RoHS Compliant, ELV Compliant
HF
Halogen Free
PolySwitch Resettable Devices
– Surface-mount Devices
Table S2
Thermal Derating for Surface-mount Devices
[Hold Current (A) at Ambient Temperature (°C)]
Maximum Ambient Temperature
Cont’d
Part Number
-40°C
-20°C
0°C
20°C
25°C
40°C
50°C
60°C
70°C
80°C
85°C
125°C
miniSMDE Series
Size 11550 mm/4420 mils
miniSMDE190F
3.16
2.74
2.20
1.90
1.74
1.48
1.27
1.10
0.80
0.50
0.35
—
midSMD Series
Size 5050 mm/2018 mils
SMD030F-2018
decaSMDC050F/60
SMD100F-2018
SMD150F-2018
SMD200F-2018
0.48
1.00
1.59
2.21
2.81
0.42
0.85
1.43
1.97
2.54
0.35
0.70
1.20
1.70
2.27
0.30
0.55
1.10
1.50
2.00
0.28
0.53
1.03
1.43
1.93
0.24
0.45
0.94
1.26
1.73
0.21
0.40
0.85
1.15
1.59
0.17
0.35
0.72
1.00
1.46
0.15
0.30
0.69
0.91
1.32
0.12
0.25
0.61
0.79
1.19
0.10
0.23
0.57
0.73
1.12
—
—
—
—
—
SMD Series
Size 7555 mm/2920 mils
SMD030F
SMD050F
SMD075F
SMD075F/60
SMD100F
SMD100F/33
SMDH120
SMD125F
SMD260F
SMD300F
NEW
0.44
0.73
1.11
1.11
1.59
1.48
2.34
1.89
3.82
4.13
4.20
0.39
0.65
0.99
0.99
1.43
1.35
1.96
1.68
3.41
3.75
3.80
0.32
0.55
0.84
0.84
1.20
1.20
1.58
1.50
2.90
3.30
3.30
0.30
0.50
0.75
0.75
1.10
1.10
1.20
1.25
2.60
3.00
3.00
0.28
0.47
0.71
0.71
1.03
1.06
1.15
1.21
2.45
2.87
2.90
0.26
0.43
0.63
0.63
0.94
0.98
1.02
1.04
2.19
2.62
2.62
0.23
0.39
0.57
0.57
0.85
0.91
0.92
0.93
1.99
2.43
2.43
0.19
0.33
0.49
0.49
0.72
0.83
0.83
0.85
1.70
2.25
2.25
0.18
0.31
0.45
0.45
0.69
0.79
0.74
0.71
1.58
2.00
2.00
0.17
0.28
0.39
0.39
0.61
0.73
0.65
0.61
1.38
1.87
1.87
0.15
0.26
0.36
0.36
0.57
0.69
0.60
0.55
1.28
1.78
1.78
—
—
—
—
—
—
0.26
—
—
—
—
SMD300F/15
SMD2 Series
Size 8763 mm/3425 mils
SMD150F
SMD150F/33
SMDH160
SMD185F
SMD200F
SMD250F
2.30
2.30
2.14
2.54
3.01
3.72
2.04
2.04
1.96
2.29
2.67
3.31
1.80
1.80
1.78
2.20
2.30
2.80
1.50
1.50
1.60
1.85
2.00
2.50
1.45
1.45
1.56
1.80
1.90
2.35
1.23
1.23
1.42
1.55
1.66
2.09
1.10
1.10
1.33
1.43
1.50
1.89
0.99
0.99
1.24
1.31
1.30
1.60
0.83
0.83
1.15
1.19
1.16
1.48
0.70
0.70
1.06
1.06
0.99
1.28
0.63
0.63
1.02
1.00
0.91
1.18
—
—
0.44
—
—
—
Figure S1 Thermal Derating Curve for Surface-mount Devices
A =
femtoSMD / picoSMD /
nanoSMD / microSMD /
miniSMD / decaSMD and SMD
miniSMDE190F
% of rated hold and trip current
Figure S1
200
180
10
B
A
C
B =
C =
160
140
120
100
80
60
SMDH120 and SMDH160
A
40
20
0
-40
-20
0
20
40
60
80
100
120
C
B
Ambient Temperature (˚C)
RoHS Compliant, ELV Compliant
HF
Halogen Free
95
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