Littelfuse PGB20402 Series Manual de usuario descargar pdf (Pagina 3)

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PGB2 Series

Speciﬁcations are subject to change without notice.

Revised: March 8, 2011

PulseGuard

Suppressors

Surface Mount Polymeric ESD Suppressors

Environmental Speciﬁcations

Operating Temperature -65°C to +125°C

Biased Humity:

Biased Heat:

40°C, 95% RH, 1000 hours

85°C, 1000 hours

Thermal Shock

MIL-STD-202, Method 107G,

-65°C to 125°C, 30 min. cycle,

10 cycles

Vibration .*-45%.FUIPE"

Chemical Resistance MIL-STD-202, Method 215

Solder Leach Resistance and

Terminal Adhesion

*1$&*"+45%

Physical Speciﬁcations

Materials

#PEZ&QPYZ(MBTT4VCTUSBUF

5FSNJOBUJPOT$V/J4O

Device Weight 0.349 mg

Solderability MIL-STD-202, Method 208

Soldering

Parameters

8BWFTPMEFS¡$TFDPOETNBYJNVN

3FnPXTPMEFS¡$TFDPOETNBYJNVN

Design Consideration

Because of the fast rise-time of the ESD transient, proper

QMBDFNFOUPG1VMTF(VBSETVQQSFTTPSTBSFBLFZEFTJHO

consideration to achieving optimal ESD suppression. The

devices should be placed on the circuit board as close to the

source of the ESD transient as possible. Install PulseGuard

TVQQSFTTPSTDPOOFDUFEGSPNTJHOBMEBUBMJOFUPHSPVOE

directly behind the connector so that they are the ﬁrst board-

level circuit component encountered by the ESD transient.

Soldering Parameters

Reﬂow Condition Pb – Free assembly

Pre Heat

- Temperature Min (T

s(min)

) 150°C

- Temperature Max (T

s(max)

) 200°C

- Time (min to max) (t

) 60 – 180 seconds

Average ramp up rate (Liquidus Temp

) to peak

¡$TFDPOENBY

S(max)

to T

- Ramp-up Rate ¡$TFDPOENBY

Reﬂow

- Temperature (T

) (Liquidus) 217°C

- Temperature (t

) 60 – 150 seconds

Peak Temperature (T

) 260°C

Time within 5°C of actual peak

Temperature (t

)

10 – 30 seconds

Ramp-down Rate ¡$TFDPOENBY

Time 25°C to peak Temperature (T

) NJOVUFTNBY

Notes:

- PGB2 Series recommended for reﬂow soldering only

3FDPNNFOEFEQSPmMFCBTFEPO*1$+&%&%+45%$

- For recommended soldering pad layout dimensions,

please refer to Dimensions section of this data sheet

1 2 3 4 5

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