Littelfuse 977 Series Manual de usuario descargar pdf (Pagina 3)

Specications are subject to change without notice.

Axial Lead and Cartridge Fuses

5x20mm > Time-Lag > 977 Series

977 Series

Please refer to www.littelfuse.com/series/977.html for current information.

977 Series

Soldering Parameters - Wave Soldering

Dwell Time

100

120

140

160

180

200

220

240

260

280

300

100

110

120

130

140

150

160

170

180

190

200

210

220

230

240

Time (Seconds)

Temperature (°C) - Measured on bottom side of board

Cooling Time

Preheat Time

Wave Parameter Lead-Free Recommendation

Preheat:

%FQFOETPO'MVY"DUJWBUJPO5FNQFSBUVSF

5ZQJDBM*OEVTUSZ3FDPNNFOEBUJPO

5FNQFSBUVSF.JOJNVN



° C

5FNQFSBUVSF.BYJNVN



° C

1SFIFBU5JNF TFDPOET

Solder Pot Temperature:



° $.BYJNVN

Solder Dwell Time: 2-5 seconds

Recommended Hand-Solder Parameters:

Solder Iron Temperature: 350° C +/- 5°C

Heating Time: 5 seconds max.

Note: These devices are not recommended for IR or

Convection Reow process.

Recommended Process Parameters:

Materials

Body: Ceramic

Cap:/JDLFMoQMBUFE#SBTT

Leads:5JOoQMBUFE$PQQFS

Terminal Strength

.*-45%(.FUIPE"5FTU

$POEJUJPO"

Solderability

3FGFSFODF*&$4FDPOE&EJUJPO

"OOFY"

Product Marking

Cap 1:#SBOEMPHPDVSSFOUBOEWPMUBHF

ratings

Cap 2:4FSJFTBOEBHFODZBQQSPWBM

NBSLJOHT

Product Characteristics

Operating Temperature o$UP$

Thermal Shock

.*-45%(.FUIPE(5FTU

$POEJUJPO#DZDMFTo$UP

$

Vibration .*-45%(.FUIPE"

Humidity

.*-45%(.FUIPE#5FTU

$POEJUJPO")JHI3)BOE

FMFWBUFEUFNQ$GPSIPVST

Salt Spray

.*-45%(.FUIPE%5FTU

Condition B

1 2 3 4

977 Series 1
Transientology 2

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Littelfuse 977 Series Manual de usuario Pagina 3

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