R38
SERIES
Features
●
Quick response for surge.
●
High impulse current capacity.
●
It can withstand alternating current.
●
Excellent insulation resistance and small capacitance.
●
Recommendation of ITU-T conformity.
UL
SURGE PROTECTIVE DEVICES
Safety Standard
:UL497B
File No.
E139599
Applications
●
Telephone, PBX, Wireless base station, Optical
transmission equipments, CATV transmission
equipments, Fire alarm systems and Home
security systems. RoHS restriction complied.
●
Dimensions
15 max.
10.0±0.3
φ
8±0.25
●
Impulse Absorption Characteristics
10/200μs, 20,000V Surge Wave form
10,000V/div
15±1
R28-900-BHL Break down Voltage
900V
+1.5
0
4.5
φ
1.0
+0.2
-0.1
4.4±0.4
4.4±0.4
Unit: mm
500V/div
10μs/div
10 s/div
1.2/50μs, 20,000V Surge Wave form
●
Model numbering system
R 3 8
351
Series Name
3 5 1
DC sparkover
Voltage
35X10¹=350V
B O L
Type of wire
Type of taping
With lead
None
Without lead
L
10,000V/div
R28
R38
2 electrode arrester
3 electrode arrester
B
Bulk
R28-231-BHL Break down Voltage
700V
Length
7.5mm
10.0mm
500V/div
H
J
K
O
5.7mm
6.05mm
1.0μs/div
1.0 s/div
Electrical Specifications
Safety
Standard
Model Number
DC Sparkover
Voltage
100V/s ~ 2,000V/s
(V) ±20%
90
230
250
350
420
600
Impulse
Sparkover
Voltage
100V/μs (V)
450
600
750
900
1,300
10,000
10
300
Impulse
Discharge
Current
8/20μs (A)
(Conforms to ITU-T)
Alternating
Impulse
Insulation
Discharge Current
Life Test
Resistance
50Hz, 1s
10/1,000μs
min. (MΩ)
10 times (A)
100A (times)
Capacitance
max. (pF)
R38-900-BOL
R38-231-BOL
R38-251-BOL
R38-351-BOL
R38-421-BOL
R38-601-BOL
10
4
1.5
130
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