General port protection - Automotive Datacenter & cloud - Littelfuse
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General port protection
Automotive Datacenter & cloud
Building automation Industrial
Consumer electronics Mobile & wearables
REV0120
Index
Slide # Interface type Port type Title
3 All All Overview of Littelfuse protection solutions for pow er and communication ports
5 PoE++ Evolution from PoE to PoE+ and PoE++
6 Pow er over PoE++ Lightning, ESD, and pow er fault protection – PoE++
Ethernet Circuit protection solutions for Ethernet port (intra-building, outdoor & harsh
8 PoE
environment)
10 USB Type A and Type B Circuit protection solutions for USB Type A and Type B
11 USB Type C Circuit protection solutions for USB Type C
12 HDMI, DisplayPort, and eSATA Circuit protection solutions for HDMI port, DisplayPort, and eSATA port
High speed
13 RS-232 Circuit protection solution for RS-232 port
interfaces
14 RS-485 Circuit protection solutions for RS-485 port
15 CAN/LIN bus and SIM/µSIM socket Circuit protection solutions for CAN/LIN bus and SIM/µSIM socket
16 Antenna and sensor Circuit protection solutions for antenna and sensor inputs
18 Low speed Audio and video Circuit protection solutions for audio and video lines
19 interfaces Keypads, Battery packs Circuit protection solution for keypads, buttons, sw itches, and battery packs
21 AC input Circuit protection solutions for AC input
22 Pow er DC input Circuit protection solutions for DC input
23 DC output Circuit protection solutions for DC output
24 All All Additional resources
25 All All Littelfuse global locations (sales, R&D, manufacturing)
26 All All Why choose Littelfuse?
Littelfuse, Inc. © 2020 2
Wide array of Littelfuse circuit protection solutions for
power and communication ports
Speed (Mbps)
1 2 12 25 125 320 400 480 800 2500 5K 10K 20K 40K
Low Speed Interfaces High Speed Interfaces
MIDI AUDIO RS-232 USB 1.0 RS-485 Ethernet USB 2.0 eSATA HDMI 2.0 DP 2.0
AC POW ER DC PW ER
INPUT INPUT
USB 3.2 New USB
Gen2 standard
USB 3.2
Gen 2x2
S-VIDEO USB 3.2
Gen1
USB 4.0
Varistors Varistors Overvoltage protection
TVS Diodes TVS Diodes & Diode Arrays
SIDACtors®
Polymer ESD Suppressors
Fuses Fuses Overcurrent protection
PPTC
Littelfuse, Inc. © 2020 3
Power over Ethernet (PoE)
Evolution from PoE to PoE+ and PoE++
PoE PoE+ PoE++ (NEW)
Year 2003 2009 2018
Standard IEEE 802.3af IEEE 802.3at IEEE 802.3bt
Max Power 15.4 W 30 W 60 W 90 W
Power
Max Current 350 mA 600 mA 600 mA 960 mA
(supply, PSE)
Type Type 1 Type 2 Type 3 Type 4
Power (receive, PD) 12.95 W 25.5 W 51 W 71.3 W
# of pairs used for power
2 pairs 4 pairs
delivery
Distance 100 m Cat5e
Higher current and more twisted pairs are used on PoE++ to reach 90 W
Littelfuse, Inc. © 2020 5
Lightning, ESD, and power fault protection – PoE++
RJ45 I Technology Series
III
1
I* Fuse (x8) 0461002
2 II SIDACtor® (x4) P0640SALRP
3 III Diode Array (x2) SP2555NUTG
6 Ethernet IV* TVS Diode (x2) SMCJ58CA
PHY
4 V TVS Diode (x1) SMCJ58A
5 TeleLink ® fuses can help protect power fault
I
overcurrent. These fuses are designed
7 specifically for high-speed telecom applications.
8 A single TVS diode (bi-directional) across the
IV
IV V center tap data pair and second TVS diode
across the center tap spare pair. The TVS diode
PD can be chosen based on surge requirements for
Controller 400 W, 600 W, 1500 W, or 3000 W.
(DC/DC)
II
ESD: Electrostatic Discharge TVS: Transient Voltage Suppression
EFT: Electrical Fast Transient PHY : Phy sical Lay er Littelfuse, Inc. © 2020 6
CDE: Cable Discharge Ev ents PoE: Power ov er Ethernet
Features & benefits of Littelfuse components in PoE++
Technology Function in application Product series Benefits Features
Enables compliance with regulatory standards
Ov ercurrent protection f rom power Surf ace mount; surge tolerant f use designed
I Fuse (x8)
cross and lightning surges.
0461002 likeIEC-60950, Telcordia GR-1089 and FCC
specif ically for high speed telecom applications.
47 part 68 Surge Specif ications.
Designed to protect baseband Enables to comply with global regulatory
Low v oltage ov ershoot; low on-state v oltage,
II SIDACtor® (x4) equipment against damaging P0640SALRP standards; does not degrade surge capability
and low capacitance.
ov erv oltage transients. af ter multiple surge ev ents.
Designed to prov ide protection Package optimized f or high-speed data line
μDFN-10 package; low leakage current
against ESD, CDE ,EFT, and routing; minimizes signal distortion; reduces
III Diode Array (x2)
lightning induced surges f or
SP2555NUTG
v oltage ov ershoot, and prov ides a simplif ied
(0.1 µA) & low clamping v oltage; protect up to
4 channels up to 45 A
high-speed data lines. PCB design.
IV TVS Diode (x2) Protect sensitiv e electronic SMCJ58CA
equipment f rom v oltage transients Improv es sy stem reliability by clamping the 1500 W peak pulse capability ; compatible with
induced by lightning and other v oltage at saf e lev els during transients. the lead-f ree solder ref low temperature prof ile
V TVS Diode (x1) transient v oltage ev ents. SMCJ58A
ESD: Electrostatic Discharge TVS: Transient Voltage Suppression
EFT: Electrical Fast Transient PHY : Phy sical Lay er Confidential and Proprietary | Littelfuse, Inc. © 2019 7
CDE: Cable Discharge Ev ents PoE: Power ov er Ethernet
Circuit protection solutions for Ethernet port
Intra-building Outdoor and harsh environment
RJ45 Connector Ethernet PHY
J1 RJ45
Tx+ Ethernet
Connector
PHY
J1
Tx+
Tx-
Rx+
Tx-
III IV
J8
Rx- Rx+
I
II
J8
Rx-
Note: 1Gbps or greater will require an additional two twisted pair and the diode array solution should be replicated.
Technology Function in application Series Benefits Features
Ensures design meets with all regulatory Low capacitance; low leakage current; small
I Diode Array Protection f rom ESD and EFT SRV05-04HTG-D
requirements; preserv es signal integrity design; f our lines of protection
Ensures design meets with all regulatory Surf ace mount; surge tolerant fuse designed
II Fuse Ov ercurrent protection 0461xxx
requirements; compact design specif ically for high-speed telecom applications.
High surge rating; low capacitance;
III GDT Lightning protection uses GDT with SG, CG6, CG5 Ensures saf ety and reliability of the equipment
UL recognized
diode array to meet standard and helps design meet regulatory
IV Diode Array requirements LC03xx, SP40xx requirements Low capacitance; and low leakage current
ESD: Electrostatic Discharge GDT: Gas Discharge Tubes
EFT: Electrical Fast Transient PHY : Phy sical lay er Littelfuse, Inc. © 2020 8
CDE: Cable Discharge Ev ents PoE: Power ov er Ethernet
High-speed interfaces
Circuit protection solutions for USB Type A and Type B
USB 2.0 (480 Mbps) USB 3.2 Gen 1x1 (5 Gbps)
USB USB Port
Port VBUS VBUS
USB USB
Controller Controller
I I IV
D+
IC SSTX+ IC
D-
SSTX-
II
SSRX+
SSRX-
IV
D+
D-
III
Technology Function in application Series Benefits Features
Protect 5 VDC power supply f rom Of f ers f ast response to ov er current ev ents; Ultra-low internal resistance; higher current
I Resettable PPTC
ov er current & ov er temperature
LoRho
suitable f or compact portable dev ices; holding in smallest SMD package
Protection of data lines against SP3019-04HTG; Clamp transient to a saf e lev el prev enting Low capacitance 0.3 pF & leakage current
II Diode Array
ESD SP3400-02UTG catastrophic f ailure; compact design (0.01 µA); small f orm f actor µDFN
Protection of data lines against Low capacitance ideal f or USB; small f orm Very low capacitance of 0.09 pF; small f orm
III Diode Array (6x)
ESD
SP3213-01UTG
f actor allows designers lay out f lexibility f actor µDFN
Protection of power bus against Ensure saf ety of equipment f rom repetitive Low leakage current of 100 nA; small f orm
IV Diode Array
ESD
SP1006-01UTG
ESD strikes without perf ormance degradation f actor
ESD: Electrostatic Discharge TVS: Transient Voltage Suppression
EFT: Electrical Fast Transient PPTC: Poly mer Positiv e Temperature Coef f icient Littelfuse, Inc. © 2020 10
CDE: Cable Discharge Ev ents USB: Univ ersal Serial BusCircuit protection solutions for USB Type C
USB 3.2 Gen 2x1 (10 Gbps), USB 3.2 Gen 2x2 (20 Gbps) & USB 4.0 (40 Gbps)
USB Port
USB
Vbus (x4) Controller
I
CC (x2)
SBU (x2)
IC
SuperSpeed (x8)
USB 2.0 (x4)
II III IV IV V
Technology Function in application Series Benefits Features
Digital Temperature Protect cable-connectors against Reliable ov er-heating protection, regardless of
I Indicator ov erheating
setP™
power being deliv ered
Fully compliant with USB Ty pe-C plugs
Protect against ESD on USB 2.0 0201 f ootprint; extremely low dy namic
II Diode Array
speed data lines
SP3530-01UTG Space ef f icient; reliable ESD protection
resistance
Protect against ESD on high speed Maintain signal integrity of high-speed data
III Diode Array
data lines
SP3213-01UTG
lines; reliable ESD protection
Low parasitic capacitance
IV Diode Array Protect against ESD SP1006-UTG Space ef f icient AEC-Q101 qualif ied; small f ootprint
V Diode Array Protect power bus against ESD SPHV24-01ETG Reliably protect charge controller AEC-Q101 qualif ied; low dy namic resistance
ESD: Electrostatic Discharge SBU: Sideband use, Pins A8, B8
USB: Univ ersal Serial Bus SuperSpeed: Pins A2, A3, A10, A11, B11, B10, B3, B2
Vbus: Voltage bus power, Pins A4, A9, B4, B9 USB 2.0: Pins A6, A7, B7, B6 Littelfuse, Inc. © 2020 11
CC: Conf iguration channel, Pins A5, B5Circuit protection solutions for HDMI port, DisplayPort, and
eSATA port
HDMI & DisplayPort eSATA
D2+ I
HDMI GND Chipset eSATA GND eSATA
VBUS VBUS
Port D2- Port Interface
D1+
TX+
GND
D1-
TX-
D0+ I IC
GND
D0-
CLK+ GND I IC
GND
CLK-
I RX-
SDA
SCL
RX+
CEC
HPD GND
Technology Function in application Series Benefits Features
Low capacitance makes it ideal f or
Low capacitance of 0.2 pF; low clamping
Protection of data signal lines f rom high-speed interf aces such as HDMI &
I Diode Array
ESD
SP1004U-ULC-04UTG
eSATA; small f orm f actor allows designers
v oltage of 9.2 V @ IPP=2.0 A
(t P=8/20 μs); industry standard DFN f ootprint
lay out f lexibility
ESD: Electrostatic Discharge TVS: Transient Voltage Suppression
EFT: Electrical Fast Transient HDMI: High-Def inition Multimedia Interf ace Littelfuse, Inc. © 2020 12
CDE: Cable Discharge Ev ents eSATA: External Serial Adv anced Technology AttachmentCircuit protection solution for RS-232 port
RS-232 port
RS-232 Port Transceiv er
RD
TD
RTS
CTS
IC
DSR
DTR
I
GND
SM15 (x6)
(Bidirectional implementation)
Technology Function in application Series Benefits Features
Greatly reduces clamping v oltages; 25%
Protection of data signal line f rom Very low dy namic resistance 0.30 Ω; Low
I Diode Array
ESD
SM15-02HTG higher power handling capability ; 2-3 times
leakage current & clamping voltage
higher ESD withstand capability
ESD: Electrostatic Discharge TVS: Transient Voltage Suppression
EFT: Electrical Fast Transient Littelfuse, Inc. © 2020 13
CDE: Cable Discharge Ev entsCircuit protection solutions for RS-485 port
Intra-building Outdoor and harsh environment
I
RS-485 A RS-485 RS-485 AA RS-485
Port Transceiv er Port Transceiv er
I
III
B IV
II
GND
I
BB
Technology Function in application Series Benefits Features
Protect equipment f rom short Product choices giv e engineers increased Av ailable in v arious f orm f actors; Low
I Resettable PPTC
circuit and power cross.
TSV250
design f lexibility ; helps improv e line balance parasitic capacitance
Protect f rom ESD, EFT, and Greatly reduces clamping v oltages; Specif ically designed f or RS-485 with
II* TVS Diode
lightning induced surges
SM712
robust surge and enhanced ESD protection asy mmetrical working v oltages -7 V to 12 V
III Lightning protection utilizing a GDT
with SIDACtor; when lightning Wide range of v oltages and f orm f actors; low
GDT + Coordinated protection against high surge
occurs the SIDACtor will react GTCxx, Pxxx0s capacitance and insertion loss
SIDACtor® lev els; low clamping v oltage
IV f irst ,causing v oltage to increase Low v oltage ov ershoot, low on-state v oltage
across PPTC until GDT f ires.
Note:* Pulse-Guard ESD Suppressors type PGB/XGD are an alternative solution
ESD: Electrostatic Discharge TVS: Transient Voltage Suppression Littelfuse, Inc. © 2020 14
EFT: Electrical Fast Transient GDT: Gas Discharge Tubes
CDE: Cable Discharge Ev ents PPTC: Poly mer Positiv e Temperature Coef f icientCircuit protection solutions for CAN/LIN bus
and SIM/µSIM socket
CAN/LIN Bus SIM/µSIM socket
CAN Bus Transceiv er SIM SIM
Socket Controller
V BUS
CANH DATA
CANL CLK
IC
IC
RESET
I
II
Technology Function in application Series Benefits Features
Protect against ESD and surge Ensures saf ety of the equipment without AEC-Q101 qualif ied; low clamping v oltage &
I Diode Array
transients
AQ24CANA-02HTG
perf ormance degradation leakage current
Low line capacitance 8 pF; high ESD
Small f orm f actor suitable f or compact
II Diode Array Protection against ESD SP1001-05VTG
designs
withstand capability ; AEC-Q101 qualif ied;
SMD package
ESD: Electrostatic Discharge CAN: Controller Area Network
EFT: Electrical Fast Transient LIN: Local Interconnect Network Littelfuse, Inc. © 2020 15
CDE: Cable Discharge Ev ents SIM: Subscriber Identity ModuleCircuit protection solutions for antenna
and sensor inputs
Antenna Sensor input
RF
Receiv er
RF
Antenna
I Amplifier Input II
Element
Module
IC
Signal
Ground
Shield
Ground
Technology Function in application Series Benefits Features
Poly mer ESD Preserv e signal integrity ; withstand high Extremely low capacitance (0.09 pF); high
I Suppressor
Protection against ESD XGD10603
lev els of ESD ESD withstand rating (30 kV)
Small f orm f actor suitable f or compact High ESD withstand rating; low leakage
II Diode Array Protection against ESD SP3522-01ETG
designs current; AEC-Q101 qualif ied parts av ailable
ESD: Electrostatic Discharge TVS: Transient Voltage Suppression Littelfuse, Inc. © 2020 16
EFT: Electrical Fast Transient
CDE: Cable Discharge Ev entsLow speed applications
Circuit protection solutions for audio and video lines
Audio line Video line
Video Port Video ADC
Left Y Luminance
Right C
Audio Chrominance
Port Audio Video Composite
Codec
I RF Coaxial
IC
II IC
Technology Function in application Series Benefits Features
Absorb repetitiv e ESD strikes at the max lev el
Protect audio codec f rom Low capacitance of 5 pF; low leakage current
I Diode Array
damaging ESD
SP1002 without sy stem perf ormance degradation;
of 0.5 µA; small package
compact design
Absorb repetitiv e ESD strikes at the max lev el
Prev ent v ideo analog-to-digital Low capacitance of 0.3 pF; low leakage
II Diode Array
conv erter f rom damaging ESD
SP3019-04HTG without sy stem perf ormance degradation;
current
compact design
ESD: Electrostatic Discharge TVS: Transient Voltage Suppression Littelfuse, Inc. © 2020 18
EFT: Electrical Fast Transient
CDE: Cable Discharge Ev entsCircuit protection solution for keypads, buttons,
switches, and battery packs
Circuit protection for keypads Circuit protection for battery packs
Keypad Battery
B1 I/O Connector II
Controller B+
B2
B-
B3 Controller
IC Cntrl
B4
IC
I
III
Technology Function in application Series Benefits Features
Protect ICs and other components at Prov ides design f lexibility using discrete AEC-Q200 compliant; standard low
I Varistor
the circuit board lev el against ESD
V5.5MLA0402
single-channel dev ices capacitance
Small f orm f actor suitable f or compact 35 A interrupt rating at 32 VDC; compact
II Fuse Ov ercurrent protection f or power bus 435
designs f ootprint (0402)
ESD protection f or power bus and Maintain signal integrity with reliable AEC-Q101 Qualif ied; low Input capacitance;
III Diode Array
control line
SP3019-04HTG
protection f ast response time (< 1 ns)
ESD: Electrostatic Discharge TVS: Transient Voltage Suppression Littelfuse, Inc. © 2020 19
EFT: Electrical Fast Transient MLV: Multilay er Varistor
CDE: Cable Discharge Ev entsPower inputs
Circuit protection solutions for AC input
AC input
I
Upstream II Dow nstream
Pow er System Pow er Module
Technology Function in application Series Benefits Features
Protection against short circuit and Reduces damage to equipment compact Third-party compliance; low internal
I Fuse
ov erload conditions
313
design; energy ef f iciency protection resistance
High energy absorption capability ; small
Protection against sev ere surge Reduces customer qualif ication time by
II* Varistor
transients
UltraMOV
comply ing with third-party saf ety standards
package; high operating temperature range
up to 125° C
Note:* High power TVS Diodes (AK Series) are an alternative solution
ESD: Electrostatic Discharge AC: Alternate Current Littelfuse, Inc. © 2020 21
EFT: Electrical Fast Transient MOV: Metal-oxide Varistor
CDE: Cable Discharge Ev entsCircuit protection for DC input
DC Input 12 V/24 V DC DC Input 48 V DC DC Input (PFC circuit) DC Input (portable devices)
-48VDC
+24V
DC DC
I III
I IV
GND Power I Power
Module
Power Power
Module
0 Plug Plug
V
II
Technology Function in application Series Benefits Features
Increased long-term reliability ; more board High peak surge current rating; high operating
I Varistor Protect against v oltage transients CIII, LV Ultra MOV, LA
space; higher surge handling density temperature range up to 125° C
High peak surge current ratings; wide
II GDT Ground isolation protection CG Extremely low leakage current to ground
operating v oltage range
Reduces damage to equipment; compact
III Fuse Ov ercurrent protection 477, 505
design
Small f ootprint with high breaking capacity ;
Protection against short circuit and Of f ers f ast response to ov er current ev ents; Ultra-low internal resistance; higher current
IV Resettable PPTC
ov erload current conditions
LoRho
suitable f or compact portable dev ices; holding in smallest SMD package
Ensure saf ety of equipment f rom repetitive Low leakage current of 100 nA; small f orm
V TVS Diode Surge and ESD protection SP11xx
ESD strikes without perf ormance degradation f actor; multiple v oltages av ailable
ESD: Electrostatic Discharge DC: Direct Current Littelfuse, Inc. © 2020 22
EFT: Electrical Fast Transient MOV: Metal-oxide Varistor
CDE: Cable Discharge Ev ents GDT: Gas Discharge TubeCircuit protection solution for DC output
DC output
DC
Output
Connector
I Pow er
Bus
Signal Ground
Technology Function in application Series Benefits Features
Improv es sy stem reliability by protecting
I TVS Diode Ov erv oltage surge protection SMBJ downstream components f rom transients on Excellent clamping capability
power lines
ESD: Electrostatic Discharge AC: Alternate Current Littelfuse, Inc. © 2020 23
EFT: Electrical Fast Transient TVS: Transient Voltage Suppression
CDE: Cable Discharge Ev entsEthernet Protection
Selection Guide
USB Type-C
ESD Protection Solution
Circuit Protection
for USB applications
Additional information can be found on littelfuse.com
Littelfuse, Inc. © 2020
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Legend
Sales
R&D
Manufacturing
Littelfuse, Inc. © 2020 25Why choose Littelfuse?
▪ A global leader with a broad product portfolio, covering every aspect of protection,
sensing, and control
▪ Application expertise combined with product designed guidelines to help you
determine the best component for your application
▪ Testing capabilities and assistance to support confirmation of your product
selection
▪ Standards compliance expertise, including product compliance to many standards
and approval support
▪ High-volume manufacturing that is committed to the highest quality standards
▪ A global company with local support
We are committed to supporting your success!
Littelfuse, Inc. © 2020 26Littelfuse.com
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