B72481U9999X1 EPCOS Inc, B72481U9999X1 Datasheet - Page 18

• Manufacturer Part Number: B72481U9999X1
• Description: LAB KIT, VARISTOR, SURGE PROTECTION
• Manufacturer: EPCOS Inc

Specifications of B72481U9999X1

• Operating Temperature Max: +85°C
• Operating Temperature Min: -55°C
• Smd Disk Varistors (cu Varistors) For Surge Current Protection, Operating Temperature Max: +85°C
• Temperature Operating Min: -55°C
• Rohs Compliant: Yes
• Features: 5 Standard Series (CU3225K60G2, CU3225K275G2, CU4032K275G2, CU3225K300G2, CU4032K300G2), 1 Telecom Sereis (CU4032S95AG2), 2 Automotive Series (CU3225K14AUTOG2, CU4032K14AUTOG2)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Soldering directions
1
1.1
The nickel barrier layer of the silver/nickel/tin termination prevents leaching of the silver base met-
allization layer. This allows great flexibility in the selection of soldering parameters. The tin pre-
vents the nickel layer from oxidizing and thus ensures better wetting by the solder. The nickel bar-
rier termination is suitable for all commonly-used soldering methods.
Multilayer CTVS: Structure of nickel barrier termination
1.2
Silver-palladium terminations are used for the large case sizes 1812 and 2220 and for chips in-
tended for conductive adhesion. This metallization improves the resistance of large chips to ther-
mal shock.
In case of conductive adhesion, the silver-palladium metallization reduces susceptibility to corro-
sion. Silver-palladium termination can be used for smaller case sizes (only chip) for hybrid appli-
cations as well. The silver-palladium termination is not approved for lead-free soldering.
Multilayer varistor: Structure of silver-palladium termination
Please read Cautions and warnings and
Important notes at the end of this document.
SMD disk varistors (CU varistors)
Standard series
Terminations
Nickel barrier termination
Silver-palladium termination
Page 18 of 33