B72240B251K1 EPCOS Inc, B72240B251K1 Datasheet - Page 6

• 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

Reliability data
Test
Varistor voltage
Clamping voltage
Max. DC operating voltage The maximum allowable DC operating
Surge current derating,
8/20 µs
Fast temperature cycling
Damp heat, steady state
Note:
UCT = Upper category temperature
LCT = Lower category temperature
Please read Cautions and warnings and
Important notes at the end of this document.
Strap varistors
HighE, standard, LS40 series
Test methods/conditions
The voltage between two terminals with
the specified measuring current applied
is called V
The maximum voltage between two
terminals with the specified standard
impulse current (8/20 µs) applied.
voltage V
applied for 1000 ±48 h.
The leakage current I
is recorded.
Then the specimen shall be stored at
room temperature and normal humidity
for 1 to 2 h.
Thereafter, the change of V
measured.
10 surge currents (8/20 µs), unipolar,
interval ≥60 s, amplitude correspond-
ing to derating curve for 10 impulses
at 20 µs
IEC 60068-2-14, test Na, LCT/UCT,
dwell time 30 min, 5 cycles
IEC 60068-2-78
The specimen shall be subjected to
40 ±2 °C, 90 to 95% r. H. for 56 ±2 days
with 10% of the maximum continuous
DC operating voltage V
Then stored at room temperature and
normal humidity for 1 to 2 h.
Thereafter, the change of V
measured.
DC
v
(1 mA
at UCT +5/–0 °C is
DC
6
@ 0.2 … 2 s).
leak
DC
11/07
(t) during test
.
v
v
shall be
shall be
Requirement
To meet the specified value.
To meet the specified value.
I
|
|
(measured in direction
of surge current)
No visible damage
|
No visible damage
|
leak
∆V/V (1 mA)
∆V/V (1 mA)
∆V/V (1 mA)
∆V/V (1 mA)
(t = 1000 h) ≤ I
|
|
|
|
≤10%
≤10%
≤10%
≤10%
leak
(t = 0 h)