PolySwitch
™
Resettable Devices
Surface-mount Devices
More than 15 years ago, Raychem Circuit Protection
introduced the SMD product family. Since then, surface-
mount polymeric PTC devices quickly became the industry
standard for computer, consumer, multimedia, portable, and
automotive electronics protection. In 1995, Raychem Circuit
Protection advanced the technology, reducing the size and
price of surface-mount resettable devices with the introduction
of its miniSMD product series followed by microSMD and
nanoSMD family. The nanoSMD series reduces the size to
a 3216mm (1206 mils) foot print, one-third the size of the
popular miniSMD series.
The recent addition to the surface-mount family include 24V
miniSMD 4532mm (1812 mils), 60V decaSMD 5050mm
(2018 mils), as well as 1.75A microSMD 3225mm (1210
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 complaint
• 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
Surface-mount Devices
Applications:
• Computer
• Portable electronics
• Multimedia
• Game machines
• Telephony and broadband
• Mobile phones
• Automotive
• Industrial controls
• Battery
82
Protection Application Selection Table for Surface-mount Devices
• The table below lists PolySwitch
™
devices and SiBar
™
devices typically used in these applications.
• Specifications for the suggested 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
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
Smart card reader
Telecom - modem
Digital line
OC
OV
Telecom - PBX
Subscriber
CPU
Individual Port
2 port ganged
3 port ganged
*Refer to the SiBar thyristor product section for more information.
This list is not exhaustive. Raychem Circuit Protection welcomes our customers’ input for additional application ideas for Polyswitch Resettable devices.
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
decaSMDC050F/60
SMD100F/33
SMD185F
SMD185F
nanoSMDC050F/13.2
nanoSMDC050F/13.2
SMD075F
nanoSMDC110F
miniSMDC075F
nanoSMDC075F
nanoSMDC075F
miniSMDC050F
SMD030F-2018
nanoSMDC110F
microSMD010F
miniSMDC014F
TVB270SC-L*
miniSMDC014F
nanoSMDC050F/13.2
nanoSMDC075F
nanoSMDC150F
miniSMDC200F
Low Resistance
SMD250F
miniSMDC260F
miniSMDC110F/16
nanoSMDC150F
-
nanoSMDC150F
miniSMDC110F/16
nanoSMDC110F
miniSMDC260F
SMD300F
miniSMDC110F/16
microSMD050F
decaSMDC050F/60
SMD185F
SMD185F
SMD185F
miniSMDC110F/16
nanoSMDC050F/13.2
SMD075F
nanoSMDC150F
miniSMDC110F/16
nanoSMDC110F
nanoSMDC075F
miniSMDC075F
SMD075F
nanoSMDC150F
microSMD035F
miniSMDC014F
TVB270SC-L*
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
decaSMDC050F/60
SMD100F/33
SMD150F/33
SMD150F/33
nanoSMDC075F
microSMD035F
SMD050F
microSMD075F
miniSMDC075F
nanoSMDC050F/13.2
nanoSMDC075F
miniSMDC020F
SMD050F
nanoSMDC075F
microSMD005F
miniSMDC014F
TVB270SC-L*
miniSMDC014F
nanoSMDC050F/13.2
nanoSMDC050F/13.2
miniSMDC125F
miniSMDC200F
Surface-mount Devices
83
Temperature sensor
USB