Article List :  Littelfuse : 4 posted

PGB1010402 - Surface Mount Polymeric ESD Suppressors

Littelfuse 2008/12/17 09:33

Description
PulseGuard ESD Suppressors help protect sensitive electronic equipment against electrostatic discharge (ESD). They supplement the on-chip protection of integrated circuitry and are best suited for low-voltage, high-speed applications where low capacitance is important. Data ports
utilizing such high-speed protocols as USB 2.0, IEEE1394, HDMI and DVI can benefit from this new technology. PulseGuard suppressors use polymer composite materials to suppress fast-rising ESD transients (as specified in IEC 61000-4-2), while adding virtually no capacitance to the circuit.

Features
*RoHS compliant and lead-free
*Ultra-low capacitance
*Low leakage current
*Fast response time
*Bi-directional
*Withstands multiple ESD strikes
*Compatible with pick-and-place processes
*Available in 1000, 3000, 5000 and 10000 piece reels (EIA-RS481)

Applications
*HDTV Hardware
*Laptop/Desktop Computers
*Network Hardware
*Computer Peripherals
*Digital Cameras
*External Storage
*Set-Top Boxes

PGB1010603, PGB102ST23  

PGB1010402 - Surface Mount Polymeric ESD Suppressors

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SL1002A - Gas Plasma Arrester

Littelfuse 2008/10/15 09:26

GENERAL DESCRIPTION
The Broadband Optimized™ SL1002 series has been especially developed for use in broadband equipment. Unique design features offer high levels of performance on fast rising transients in the domain of 100V/μS to 1KV/μS, which are those most likely from induced Lightning disturbances. These devices have Ultra low capacitance (typically 1.2pF or less) and present insignificant signal losses up to 1.5GHz. These devices are extremely robust and are able to divert a 5000A pulse without destruction. For AC Power Cross of long duration, overcurrent protection is recommended.

FEATURES
*RoHS compliant and Lead-free
*Ultra Low Insertion Loss
*Surface mountable
*5KA surge capability tested with 8/20μS pulse as defined by IEC 61000-4-5
*Excellent response to fast rising transients.
*Can be used to meet Telcordia GR1089 without series resistance
*10/700 6KV capability, as per ITUT k.21, enhanced test level
*2000 Amp 2/10μS surge rating
*Meets FCC part 68 10/160μs waveform, 200A test and 10/560μs waveform 100A test.

APPLICATIONS
*Broadband equipment.
*ADSL equipment.
*XDSL equipment.
*Satellite and CATV equipment.
*General telecom equipment.

SL1002A090, SL1002A230, SL1002A250, SL1002A260, SL1002A350, SL1002A600  

SL1002A - Gas Plasma Arrester

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SP03-6 - Low Capacitance TVS protection for high-speed data interfaces

Littelfuse 2008/06/19 09:43

Description
This new broadband protection device from Littelfuse provides overvoltage protection for applications such as 10/100/1000 BaseT Ethernet, T3/E3 DS3 interfaces, ADSL2+, and VDSL2+. This new protector combines the TVS diode element with a diode rectifier bridge to provide
both longitudinal and differential protection in one package.
This design innovation results in a capacitive loading characteristic that is log-linear with respect to the signal voltage across the device.
This reduces intermodulation (IM) distortion caused by a typical solid-state protection
solution.
The application schematic provides the connection information.

Features
* RoHS compliant
* MS-012 surface mount package (JEDEC SO-8)
* Low insertion loss, loglinear capacitance
* Combined longitudinal and metallic protection
* Clamping speed of nanoseconds
* UL 94V-0 epoxy molding
* Pending UL recognized component
* Low clamping voltage Applications

Applications
* T1/E1 Line cards
* T3/E3 and DS3 Interfaces
* STS-1 Interfaces
* 10/100/1000 BaseT Ethernet

 

SP03-6 - Low Capacitance TVS protection for high-speed data interfaces

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SP725 - Silicon Protection Arrays

Littelfuse 2008/04/26 10:58

Description
The SP725 is an array of SCR/Diode bipolarstructures for ESD and overvoltage protection of sensitive inputs circuits.
The SP725 has 2 protection SCR/Diode device structures per input.
There are a total of 4 available inputs that can be used to protect up to 4 external signal or bus lines.
Overvoltage protection is from the IN (Pins 1 - 4) to V+ or V-.
The SCR structures are dusigned for fast triggering at athreshold of one +VBE diode threshold above V+ (Pin 5,6) or one -VBE diode threshold below V- (Pin 7,8).
From an IN input, a clamp to V+ is activated if a transient pulse causes the input to be increased to a voltage level greater than one VBE above V+.
A similar clamp to V- is activated if a negative pulse, one VBE less than V-, is applied to an IN input.
Refer to Fig 1 and Table 1 for further detaels.
Refer to Application Note AN9304 and AN9612 for furter detail.

Features
* ESD interface per HBM Standards
- IEC 61000-4-2, Direct Discharge...........8kV (Level 4)
- IEC 61000-4-2, Air Discharge..............15kV (Level 4)
- MIL-STD-3015.7.............................................25kV
* Peak Current Capability
- IEC 61000-4-5 8/20 ㎲ Peak Pulse Current.....± 14 A
- Single Transeint Pulse, 100㎲ Pulse Width ......± 8 A
* Designes to Provede Over-Voltage Protection
- Single-Ended Voltage Range to .....................+ 30V
- Differential Voltage Range to...........................±15V
* Fast Switching....................................2ns Risetime
* Low input Leakages..................5 nA at 25˚C Typical
* Low input Capacitance.........................5 ㎊ Typical
* An Array of 4 SCR/Diode Pairs
* Operating Temperature Range...........-40 ˚C to 105 ˚C

Applications
* Microprocessor/Logic
* Data Bus Protection
* Analog Device input Protection
* Voltage Clamp

SP725ABG
SP725ABTG

 

SP725 - Silicon Protection Arrays

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