Littelfuse（力特）应用和电路保护典型设计
SURFACE MOUNT
RADIAL LEADED
BATTERY STRAP
Series Name
LoRho 0603L 0805L 1206L 1210L 1812L 2016L 2920L
250S
USBR
16R
30R
60R
72R
250R
600R
LR
LR
LT
ST
VL
VT
Telecom
Application
UL60950 ,TIA-968-A, GR-1089 Req's
X
XX
ITU-T Recommendations
X
XX
CPE (Customer Premises Equipment)
X
XX
Analog Line Card
X
XX
T1/E1/J1 And xDSL
X
XX
ISDN And Ethernet LAN
X
XX
Cable Telephony And Modem
X
XX
PBX/KTS And Key Telephone System
X
XX
Computer and
Peripheral
USB Port and USB Powered Device
X XXXXX
XX
I/O Port
X
XXXXX
X XXXX
Video Port
XXX
X
XX
Memory Card and Socket
X XXXXX
X
XX
LCD Monitor
X XXXXX
XX
Hard Disk Drive and Solid State Drive
X XXXXX
X
XX
Consumer
Electronics
Set Top Box
XXX
X
Loudspeaker
X
Smart Phone and Tablet PC
X XXXX
Portable/Wearable Electronic Device
X XXXXXX
Electromagnetic Loads, Motor
XX
XXX
Solenoid Protection
X
X
XXX
Battery
Lithium-Ion Cell
X X XXXX
Battery Pack and Battery
Management System
X
X X XXXX
Industrial and
Medical Electronics
Motor / Fan / Pump / Solenoid
XXX
XXX
Voltage / Current Input Terminal
XXX
XX
Automotive
DC Motor / Window Lift
XX
Network/Communication/
Infotainment
XXXXX
X
NOTE: The application summary is for reference only. Determination of suitability for a specific application is the responsibility of the customer.
.
PTC产品应用
POLY-FUSE
®
可重置PTC
PTC通常用作电路保护，适用于敏感元件不断受到过流条
件损坏的场合。PTC在故障电流下的自我复位能力，使其
适用于用户或技术人员不易接近的电路，或需要恒定的正
常运行时间的电路。
典型应用包括个人计算机（USB、存储卡读卡器、键盘/鼠
标和视频端口）、外围设备（硬盘驱动器、视频卡和集线
器）、手机、电池组、工业控制、照明镇流器和电机控制
的端口保护。
下面的图表可作为Littelfuse特定的PTC器件（适用于某
些终端场合）的快速指南。
如需详细的应用帮助，请联系Littelfuse产品专家或登录
我们的新参考设计中心网址（
http://www.littelfuse.com/
designcenter
）。
有关详细的产品规格，请参阅本目录中的Littelfuse PTC
数据表，或登录
http://www.littelfuse.com/PTCs
。
Outside Worl
d
Signa
l
Ground
Case Groun
d
USB Port
USB Controlle
r
SSTX+
SST
X-
SSRX+
SSRX-
Ground
D+
D-
1206
L150S
L
SP3012-0
6
* De
vices sh
ow
n a
s transp
aren
t
VBU
S
PTC
Cell Phone
Battery -
Control
Battery +
Signal
Ground
Shield
Ground
Bat
tery Connector
Bat
tery Controller IC
(3) V5.5MLA0402
(Multilaye
r
Va
ristor)
PTC
Outside
Worl
d
D+
D -
VBUS
Signal
Ground
Shield
Ground
1206L150
USB P
ort
USB Contr
oller
V5.5MLA063
(2) PGB1
010603
(PulseGuar
d
®
ESD Suppr
essor)
PTC
Telco
Tip
Signal
Ground
RJ1
1 Connect
or
Tx/Rx Cir
cuits
SMD/leaded
SID
ACto
r
®
Device
Ring
PTC
60
0R Ser
ies
250R Ser
ies
HDMI Chipset
HDMI Port
D2+
D2-
D1+
D1-
D0+
D0-
CLK+
CLK-
Outside World
SP3010-04UTG
SP3010-04UTG
Case
Ground
Case
Ground
Signal
Ground
0603L010
5V
PTC
Data Pair
Data Pair
Data Pair
Data Pair
Power Sourc
e
Equipment
(PSE)
Powe
red
Device
(PD)
Switch/Hub
Powe
red End Station
PTC
典型的PTC电路保护设计
POLY-FUSE
®
可重置PTC
以下是Littelfuse PTC与其它Littelfuse电路保护器件相结合
的典型电路示例。这可提供全面的保护解决方案。有关设
计帮助，请联系Littelfuse应用专家，或登录
www.littelfuse.
com/designcenter
或
http://www.littelfuse.com/PTCs
以获
取更多信息。最终使用之前，请务必验证产品的规格和
测试设备的性能。
以太网供电
USB 3.0/3.1
HDMI
锂离子电池组
USB 2.0
终端/环形电路——金属
您正在使用的浏览器版本过低，将不能正常浏览产品选型内容。
- 收藏