B72240B251K1 EPCOS Inc, B72240B251K1 Datasheet - Page 12

• Manufacturer Part Number: B72240B251K1
• Description: Varistors 250V RMS 40MM Varistor B40K250
• Manufacturer: EPCOS Inc
• Type: MOVr

Specifications of B72240B251K1

• Voltage Rating Dc: 320 V
• Voltage Rating Ac: 250 V
• Clamping Voltage: 650 V
• Peak Surge Current: 40 KA
• Capacitance: 2900 pF
• Operating Temperature Range: - 40 C to + 85 C
• Mounting: Screw
• Tolerance: 10 %
• Brand/series: E Series
• Current, Peak: 40000 A
• Current, Surge: 40000 A
• Dimensions: 60 mm W x 55 mm H x 14 mm T
• Electric Strength: ≥2.5 kV (RMS) (Min.)
• Energy Rating: 490 Joules
• Mounting Style: Leaded
• Package: Screw
• Power Rating: 1.4 W
• Resistance, Insulation: ≥10 Megohms (Min.)
• Technology: Metal Oxide
• Temperature, Operating, Maximum: 85 °C
• Temperature, Operating, Minimum: -40 °C
• Terminal Type: Screw
• Voltage, Ac: 250 VAC
• Voltage, Clamping: 650 V
• Voltage, Dc: 320 VDC
• Voltage, Operating: 250 Vrms⁄320 VDC
• Voltage, Varistor: 390
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: B72240B0251K001

Derating curves
Maximum surge current i
For explanation of the derating curves refer to “General technical information”, section 1.8.1
i
SIOV-LS40K550QP(K2) … K750QP(K2)
Please read Cautions and warnings and
Important notes at the end of this document.
max
10
10
10
10
10
10
A
5
5
5
5
5
4
3
2
0
1
10
1
Strap varistors
HighE, standard, LS40 series
max
5
= f (t
10
r
, pulse train)
2
10
10
10
10
10
1x
10
2
3
4
5
6
12
5
11/07
10
3
t
r
5
VAR0093-G
t
i
µs
r
max
10
4