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The DE37 series surge absorbers have a 5mm pitch and are ideal for power
lines and communications networks. This compact device can handle surgesof
up to 1500A(8/20µsec.) and is available in several voltages ranging
from 300V to 500V.The 400V part meets the standard for ADSL POTS*
splitters: ITU-T(International Telecommunication Union test standard)
K.20 and K.21 Basic Test Condition, and has already received good
response from both service providers and home users in ADSL splitters.
■ Characteristics
| • |
The 5mm pitch; radial taped parts can be mounted using
automatic insertion equipment. |
| • |
Also available in axial taping (the glass tube can be
mounted flat using automatic insertion equipment). |
| • |
Can be used on megabit class high speed without attenuation
of signal due a capacitance value of less than 1pF. |
| • |
Superior surge response characteristics due to microgap
technology. |
| • |
High insulation resistance of over 100MΩ. |
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■ Part number system
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DE37 |
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401 |
W |
 |
S |
00 |
T |
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Series |
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DC Spark-over
voltage(Vs) |
DC Spark-over
voltage tolerance |
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Taping form |
Taping dimentions |
Packing form |
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The
first two digits are significant, and
the third is number of zeros. |
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Ex.) 401 meanes:
40*101=400v |
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L |
±15% |
M |
±20% |
W |
+20%
-15% |
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A |
Axial
taping |
D |
Radial
taping |
S |
No
taping |
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Unit:mm
Symbol |
Taping
width |
Pitch |
04 |
Radial
taping |
12.7 |
12 |
26 |
10 |
22 |
52 |
10 |
00 |
No
taping |
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B |
Bulk
pack |
F |
Flat
pack taping |
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■ Dimension
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■ Characteristics
|
Series |
Part number |
DC spark-over
voltage
Vs |
Insulation
resistance
IR |
Electrostatic
capacitance
1kHz-6V max. |
Surge current
capacity |
Withstanding
Voltage |
UL recognized |
|
UL 497B
1) |
UL1414
2) |
UL1449
3) |
| DE37 |
DE37-301L |
300V±15% |
100
MOmin. |
DC 100V |
1pF
max |
1500A
(8/20µsec.) |
- |
○ |
- |
- |
DE37-351M |
350V±20% |
DC
250V |
○ |
- |
- |
DE37-401W |
400V(+20%,-15%) |
○ |
- |
- |
DE37-501M |
500V±20% |
○ |
- |
- |
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DE37-102M |
1000V±20% |
DC
500V |
- |
- |
- |
DE37-362M |
3,600V±20% |
AC1800V-3sec |
- |
○ 2) |
○ 4) |
DE37-452M |
4,500V±20% |
DC 1000V |
AC2000V-1min |
- |
○ 3) |
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| 1) |
: |
UL Standard UL 497B File No. E175280(N) |
| 2) |
: |
Approved if used together with a varistor (AC125V
: V1mA≥270V 8 Joule Min at 2ms, AC250V : V1mA≥470V
15 Joule Min at 2ms), electrically connected in series
by means such as twist and soldering, staking, welding
etc. |
| 3) |
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Approved if used together with a varistor (V1mA≥470V, D≥ø5mm), electrically connected in series by means such as twist and soldering, staking, welding etc. |
| 4) |
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Approved if used together with a varistor (AC125V
: V1mA≥270V, D≥ø5mm, AC250V : V1mA≥470V,
D≥ø5mm), electrically connected in series
by means such as twist and soldering, staking, welding
etc. |
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■ Basic Conditions for ITU-T K.20
• Surge Test: 10/700µsec,
4kV (25Ω), 5 times.
• AC Induced Test :
AC600V (600Ω), 1sec., 5 times.
• AC
Cross Test: AC230V(10~1000Ω), 15min.
(however, AC230 is too low for the DE37 to react) |
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