B72547E3200K000 EPCOS Inc, B72547E3200K000 Datasheet - Page 18

• Manufacturer Part Number: B72547E3200K000
• Description: Varistors 20V 1200A 470000pF SHCV SR2K20M474X
• Manufacturer: EPCOS Inc

Specifications of B72547E3200K000

• Voltage Rating Dc: 26 V
• Voltage Rating Ac: 20 V
• Clamping Voltage: 58 V
• Peak Surge Current: 1200 Amps
• Surge Energy Rating: 12 J
• Capacitance: 470 nF
• Operating Temperature Range: - 55 C to + 125 C
• Mounting: SMD/SMT
• Dimensions: 9 mm W x 7.8 mm L x 3.6 mm H
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

3.5
All EPCOS CU types with tinned termination are approved for lead-free and SnPb soldering.
3.6
All EPCOS SHCV types with tinned termination are approved for lead-free and SnPb soldering.
4
4.1
If the meniscus height is too low, that means the solder quantity is too low, the solder joint may
break, i.e. the component becomes detached from the joint. This problem is sometimes interpret-
ed as leaching of the external terminations.
If the solder meniscus is too high, i.e. the solder quantity is too large, the vise effect may occur.
As the solder cools down, the solder contracts in the direction of the component. If there is too
much solder on the component, it has no leeway to evade the stress and may break, as in a vise.
The figures below show good and poor solder joints for dual-wave and infrared soldering.
4.1.1
Good and poor solder joints caused by amount of solder in dual-wave soldering.
4.1.2
Please read Cautions and warnings and
Important notes at the end of this document.
Leaded transient voltage/RFI suppressors (SHCVs)
SHCV series
Tinned copper alloy
Tinned iron wire
Solder joint profiles / solder quantity
Nickel barrier termination
Solder joint profiles for nickel barrier termination - dual-wave soldering
Solder joint profiles for nickel barrier termination / silver-palladium / silver-platinum
termination - reflow soldering
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