B72210S251K101 EPCOS Inc, B72210S251K101 Datasheet - Page 34

• Manufacturer Part Number: B72210S251K101
• Description: METAL OXIDE VARISTOR, 320V 650V RAD
• Manufacturer: EPCOS Inc
• Type: MOVr

Specifications of B72210S251K101

• Suppressor Type: Varistor
• Peak Surge Current @ 8/20µs: 2.5kA
• Varistor Case: 10mm DISC
• Clamping Voltage Vc Max: 650V
• Peak Energy (10/1000us): 38J
• Voltage Rating Vdc: 320V
• Voltage Rating Vac: 250V
• Brand/series: Standard Series
• Capacitance: 215 pF
• Current, Peak: 2500 A
• Current, Surge: 2500 A
• Dimensions: 12.0 mm (Max.) Dia. x 4.8 mm (Max.) W x 14.5 mm (Max.) H
• Electric Strength: ≥2.5 kV (RMS) (Min.)
• Energy Rating: 38 Joules
• Mounting Style: Leaded
• Package: Leads
• Power Rating: 0.40 W (Max.) @ +85 °C
• Resistance, Insulation: ≥10 Megohms (Min.)
• Technology: Metal Oxide
• Temperature, Operating, Maximum: 85 °C
• Temperature, Operating, Minimum: -40 °C
• Terminal Type: Tinned Copper
• Voltage, Ac: 250 VAC
• Voltage, Clamping: 650 V
• Voltage, Dc: 320 VDC
• Voltage, Operating: 250 Vrms @ +85 °C, 320 VDC @ +85 °C
• Voltage, Varistor: 390
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Cautions and warnings
General
1. EPCOS metal oxide varistors (SIOVs) are designed for specific applications and should not be
2. Ensure suitability of SIOVs through reliability testing during the design-in phase. SIOVs should
3. For applications of SIOVs in line-to-ground circuits based on various international and local
Storage
1. Store SIOVs only in original packaging. Do not open the package before storage.
2. Storage conditions in original packaging:
3. Avoid contamination of an SIOV’s surface during storage, handling and processing.
4. Avoid storage of SIOVs in harmful environments that can affect the function during long-term
5. The SIOV type series should be soldered within the time specified:
Handling
1. SIOVs must not be dropped.
2. Components must not be touched with bare hands. Gloves are recommended.
3. Avoid contamination of the surface of SIOV electrodes during handling, be careful of the sharp
Soldering (where applicable)
1. Use rosin-type flux or non-activated flux.
2. Insufficient preheating may cause ceramic cracks.
3. Rapid cooling by dipping in solvent is not recommended.
4. Complete removal of flux is recommended.
Please read Cautions and warnings and
Important notes at the end of this document.
Leaded varistors
StandarD series
used for purposes not identified in our specifications, application notes and data books unless
otherwise agreed with EPCOS during the design-in-phase.
be evaluated taking into consideration worst-case conditions.
standards there are restrictions existing or additional safety measures required.
Storage temperature:
Relative humidity:
Dew precipitation:
operation (examples given under operation precautions).
SIOV-S, -Q, -LS
ETFV and SFS types
edge of SIOV electrodes.
<75% annual average,
Is to be avoided.
–25 °C … +45 °C
<95% on maximum 30 days a year.
24 months
12 months.
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