B72240B251K1 EPCOS Inc, B72240B251K1 Datasheet - Page 10

• 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

v/i characteristics
v = f (i) – for explanation of the characteristics refer
SIOV-LS40K130QP(K2) … K750QP(K2)
Please read Cautions and warnings and
Important notes at the end of this document.
v
20000
10000
8000
6000
4000
2000
1000
800
600
400
200
100
80
60
40
20
10
V
10
150
130
750
550
420
320
250
_
to “General technical information”, 1.6.3
5
440
10
A
140
_
680
460
385
275
230
4
Strap varistors
HighE, standard, LS40 series
10
_
3
10
150
130
_
750
550
420
320
250
2
10
140
_
680
460
385
275
230
1
10
440
0
10
10
B
1
11/07
A = Leakage current
B = Protection level
10
2
10
3
10
VAR0618-V
4
i
A
10
for worst-case
varistor tolerances
5