Littelfuse iTMOV Varistor Series Manual de usuario descargar pdf (Pagina 4)

210

Revised: October 21, 2013

Varistor Products

TMOV

and i TMOV

Varistor Series

Radial Lead Varistors > TMOV

and iTMOV

Series

Speciﬁcations are subject to change without notice.

Please refer to www.littelfuse.com/series/tmov.html for current information.

Repetitive Surge Capability for 14mm Parts

Repetitive Surge Capability for 20mm Parts

Wave Solder Proﬁle

NOTE:Averagepowerdissipationoftransientsshouldnotexceed0.6W

NOTE:Averagepowerdissipationoftransientsshouldnotexceed1.0W

Operating/Storage

Temperature

-40°Cto+85°C

Passive Aging

+85°C,1000hours

+/-10%typicalvoltagechange

Humidity Aging

+85°C,85%RH,1000hours

+/-10%typicalvoltagechange

Thermal Shock

+85°Cto-40°C5times

+/-10%typicalvoltagechange

Solvent Resistance MIL–STD–202,Method215F

Moisture Sensitivity Level1,J–STD–020C

Lead Material

NonLead–freeparts:Soldercoated

Copperwire,orTin–coatedCopperwire

Lead–freeparts:Tin–coatedCopperwire

Soldering

Characteristics

SolderabilityperMIL–STD–202,

Method208E

Insulating Material

Cured,ameretardantepoxypolymer

meetsUL94V–0requirements

Device Labeling

MarkedwithLF,voltage,UL/CSAlogos,

anddatecode

Physical Speciﬁcations

Environmental Speciﬁcations

BecausetheTMOV

andiTMOV

varistorscontainathermalprotectiondevice,caremustbetakenwhensolderingthedevicesintoplace.

Twosolderingmethodsarepossible.Firstly,handsoldering:Itisrecommendedtoheat-sinktheleadsofthedevice.Secondly,wavesolder-

ing:Itiscriticallyimportantthatallpreheatstageandthesolderbathtemperaturesarerigidlycontrolled.

100

150

200

250

300

00.5 11.5 22.5 33.5 4

TIME(MINUTE

TEMPERATURE (ºC)

Maximum Wave 240C

Lead–free Proﬁle

100

150

200

250

300

00.5 11.5 22.5 33.5 4

TIME(MINUTES)

TEMPERATURE (ºC)

Maximum Wave 260C

Non Lead–free Proﬁle

Figure 9: Pulse Rating Curves for 20mm types

100

1000

10000

10 100 1000 10000

Impulse Duration (μs)

Peak Current (A)

Model 20 mm

Figure 8: Pulse Rating Curves for 14mm types

100

1000

10000

10 100 1000 10000

Impulse Duration (µs)

eak Current (A)

Model 14 mm

Figure 5

Figure 6

Figure 7

Figure 8

1 2 3 4 5 6 7 8

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