B72207S250K111 EPCOS Inc, B72207S250K111 Datasheet - Page 18
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B72207S250K111
Manufacturer Part Number
B72207S250K111
Description
Manufacturer
EPCOS Inc
Datasheet
1.B72207S250K111.pdf
(36 pages)
Specifications of B72207S250K111
Technology
Metal Oxide
Capacitance Value
1400pF
Clamping Current
2.5A
Clamping Voltage
77V
Lead Style
Radial
Ac Voltage Rating (max)
25VAC
Dc Voltage Rating (max)
31VDC
Operating Temp Range
-40C to 85C
Mounting
Through Hole
Surge Current (max)
250A
Lead Spacing
5mm
Product Depth (mm)
3.7mm
Product Height (mm)
11mm
Product Diameter (mm)
9mm
Energy
1.6Joule
Varistor Voltage
39V
Lead Free Status / RoHS Status
Compliant
Reliability data
Test
Varistor voltage
Clamping voltage
Max. AC operating voltage
Surge current derating,
8/20 µs
Surge current derating,
2 ms
Electric strength
Please read Cautions and warnings and
Important notes at the end of this document.
Leaded varistors
StandarD 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.
CECC 42 000, test 4.20
1000 h at UCT
After having continuously applied
the maximum allowable voltage at UCT
±2 °C for 1000 h, the specimen shall be
stored at room temperature and normal
humidity for 1 to 2 h.
Thereafter, the change of V
measured.
CECC 42 000, test C 2.1
100 surge currents (8/20 µs), unipolar,
interval 30 s, amplitude corresponding
to derating curve for 100 impulses at
20 µs
CECC 42 000, test C 2.1
100 surge currents (2 ms), unipolar,
interval 120 s, amplitude corresponding
to derating curve for 100 impulses at
2 ms
CECC 42 000, test 4.7
Metal balls method, 2500 V
The varistor is placed in a container
holding 1.6 ±0.2 mm diameter metal
balls such that only the terminations of
the varistor are protruding.
The specified voltage shall be applied
between both terminals of the speci-
men connected together and the elec-
trode inserted between the metal balls.
v
(1 mA
DC
18
@ 0.2 … 2 s).
11/07
RMS
v
shall be
, 60 s
Requirement
To meet the specified value.
To meet the specified value.
|
|
(measured in direction
of surge current)
No visible damage
|
(measured in direction
of surge current)
No visible damage
No breakdown
∆V/V (1 mA)
∆V/V (1 mA)
∆V/V (1 mA)
|
|
|
≤10%
≤10%
≤10%