CR0800SA资料

CRxxxx seriesDescription

The CR range of protectors are based on the proventechnology of the T10 thyristor product.Designed fortransient voltage protection of telecommunicationsequipment, it provides higher power handling than a

conventional avalanche diode (TVS) and when compared toa GDT offers lower voltage clamping levels and infinite surgelife.

Packaged in a transfer molded DO-214AA surface mountoutline designed for high speed pick & place machines usedin today’s surface mount assembly lines.

Electrical Charecteristics

The electrical characteristics of a CRXXXX device is similarto that of a self gated Triac, but the CR is a two terminaldevice with no gate.The gate function is achieved by aninternal current controlled mechanism.

Like the T.T.S.diodes, the CRXXXX has a standoff voltage(Vrm) which should be equal to or greater than the operatingvoltage of the system to be protected.At this voltage (Vrm)the current consumption of the CRXXXX is negligible and willnot effect the protected system.

When a transient occurs, the voltage across the CRXXXXwill increase until the breakdown voltage (Vbr) is reached.Atthis point the device will operate in a similar way to a T.V.S.device and is in an avalanche mode.

The voltage of the transient will now be limited and will onlyincrease by a few volts as the device diverts more current.As this transient current rises, a level of current through thedevice is reached (Ibo) which causes the device to switch toa fully conductive state such that the voltage across the

device is now only a few volts (Vt).The voltage at which thedevice switches from the avalanche mode to the fullyconductive state (Vt) is known as the Breakover Voltage(Vbo).When the device is in the Vt state, high currents canbe deverted without damage to the CRXXXX due to the lowvoltage across the device, since the limiting factor in such

devices is dissipated power (V x I).

Resetting of the device to the non conducting state is

controlled by the current flowing through the device.Whenthe current falls below a certain value, known as the HoldingCurrent (Ih), the device resets automatically.

As with the avalanche T.V.S.device, if the CRXXXX is

subjected to a surge current which is beyond its maximumrating, then the device will fail in short circuit mode, thisensures that the equipment is ultimately protected.

Selecting A CRXXXX

1.When selecting a CRXXXX device, it is important that theVrm of the device is equal to or greater than the operatingvoltage of the system.

2.The minimum Holding Current (Ih) must be greater thanthe current the system is capable of delivering otherwise thedevice will remain conducting following a transient condition.

ITIHVTIRMVRMVBRVBOMINIBOV-I GraphIllustrating Symbolsand Terms forthe CR SurgeProtection Device.

The CRXXXX Range Can Be Used to Protect Against Surges As Defined In The Following International Standards.SAFCC Rules Part 68/DBellcore SpecificationMetallic 10/560µsLongitudinal10/160µsTR-NWT-00108910/1000µs2/10µs100v/µs100/700µs5/310µs10/700µs5/310µs0.5/700µs0.8/310µs8/20µs1-2/50µs10/700µs5/310µs50A100A37A-1KV----1.0KV25A--1000V25ASB100A150A75A-1KV1.5KV38A2KV50A1.0KV25A100A300V10000V25ASC100A200A100A500A1KV1.5KV38A4.0KV100A4.0KV100A250A500V4000V100AITU K-17 (Formerly CCITT)VDE 0433C-NET 131-24IEC 1000-4-5ITU K-20(Formerly CCITT)Voltage Wave FormCurrent Wave FormVoltage Wave FormCurrent Wave FormVoltage Wave FromCurrent Wave Form(Discharge through 2Ωimpendance) IVoltage Wave FormVoltage Wave FormCurrent Wave Form52

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CRxxxx seriesSpecifications

Electrical Charecteristics (Tj=25°C)

SYMBOLVRMVBRVBOVT

PARAMETERStand-off ColtageBreakdown VoltageBreakover VoltageOn-State Voltage

SYMBOLIRMIBOIH

PARAMETERStand-off CurrentBreakover CurrentHolding Current

THERMAL DATAT stgStorage and Operating Junction Temperature rangeTjTLMaximum Temperature For Soldering

(For period of 10 seconds max)

VALUE-40 to +150

150230UNIT°C°C°C

StockNumberDevice ReverseCodeStand-offVoltage030A064A072A080A110A130A150A180A230A260A310A350A030B064B072B080B110B130B150B180B230B260B310B350B030C064C072C080C110C130C150C180C230C260C310C350C255865759012014016019022027532025586575901201401601902202753202558657590120140160190220275320MaximumReverseLeakageµA555555555555555555555555555555555555MaximumBreakoverVoltage @Ibo407788981301601802202603003504004077889813016018022026030035040040778898130160180220260300350400MaximumBreakoverCurrentmA800800800800800800800800800800800800800800800800800800800800800800800800800800800800800800800800800800800800MinimumHoldingCurrentmA150150150150150150150150150150150150150150150150150150150150150150150150150150150150150150150150150150150150MaximumOn-StateVoltage@1A555555555555555555555555555555555555TypicalCapacitance@1MHz 2v biaspF1006060606040404030303030100606060604040403030303020012012012012080808060606060MAXIMUM RATINGSSUFFIX SAIpp 10x160µs Amps 100Ipp 10x560µs Amps 5020ITSM60Hz Amps DI/dt Amps/µs 500CR 0300 SACR 0640 SACR 0720 SACR 0800 SACR 1100 SACR 1300 SACR 1500 SACR 1800 SACR 2300 SACR 2600 SACR 3100 SACR 3500 SACR 0300 SBCR 0640 SBCR 0720 SBCR 0800 SBCR 1100 SBCR 1300 SBCR 1500 SBCR 1800 SBCR 2300 SBCR 2600 SBCR 3100 SBCR 3500 SBCR 0300 SCCR 0640 SCCR 0720 SCCR 0800 SCCR 1100 SCCR 1300 SCCR 1500 SCCR 1800 SCCR 2300 SCCR 2600 SCCR 3100 SCCR 3500 SCMAXIMUM RATINGSSUFFIX SBIpp 10x160µs Amps 150Ipp 10x560µs Amps10030ITSM60Hz AmpsDI/dt Amps/µs500MAXIMUM RATINGSSUFFIXSCIpp 2x10µs AmpsIpp 10x160µs AmpsIpp 10x560µs AmpsITSM60Hz AmpsdI/dt Amps/µs50020010060500www.littelfuse.com

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元器件交易网www.cecb2b.comCRxxxx series°CRXXXXSBCRXXXXSCCRXXXXSA°PULSE WAVE FORM (10/10000µS)IPP - Percentage peak current - %IPPtr100t290tr = 1.25 x (t2 - t1) =10µs50td = 1000µs 10t11234°t - Time - mSecPEAK SURGE ON-STATE CURRENTVS. SURGE CURRENT DURATIONPeak Current Surge (Non-Repetitive)On-State Current (RMS) - Amps1008060504030201086543211234510203040501002003001000CRXXXXSBCRXXXXSCCRXXXXSASurge Current Duration - full cycles @ 60HZ SINUSOIDAL10x160µs PULSE WAVE FORMIpp - Peak Pulse Current - %IppPeak Value - IppTEST WAVEFORMPARAMETERtr = 10 sectd = 160 sec 10x560µs PULSE WAVE FORMIpp - Peak Pulse Current - %IppPeak Value - IppTEST WAVEFORMPARAMETERtr = 10 sectd = 560 sec IppHalf Value = = td210x160 WaveformIppHalf Value = = td210x560 Waveform08016024032040048002805608401,1201,4001,680t - Time - Sect - Time - Sec54

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