R28
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
:UL1449
File No.
E139599
E332107
Applications
●
Telephone, PBX, Wireless base station, Optical
transmission equipments, CATV transmission
equipments, Fire alarm systems and Home
security systems.
●
Dimensions
25min.
A±0.2
25min.
φ
8.0±0.25
●
Model numbering system
R 2 8
φ
1.0
-0.1
+0.2
3 5 1
DC sparkover
Voltage
B H
L
Type of wire
Unit: mm
351
Series Name
35X10¹=350V
Type of taping
Model Number
R28-
-BHL
R28-
-BJL
R28-
-BKL
A
5.7
6.05
7.5
With lead
None
Without lead
L
R28
R38
2 electrode arrester
3 electrode arrester
B
Bulk
Length
H
J
K
O
5.7mm
6.05mm
7.5mm
10.0mm
Electrical Specifications (Low Voltage Type)
Safety
Standard
UL UL
497B 1449
(Conforms to ITU-T)
Impulse
Alternating
Impulse
Insulation
Discharge Discharge Current
Life Test
Resistance
Current
50Hz, 1s
10/1,000μs
min. (MΩ)
8/20ms (A)
10 times (A)
100A (times)
Capacitance
max. (pF)
Model Number
DC Sparkover
Voltage
100V/s~2,000V/s
(V)
90V±20%
150V±20%
230V±20%
250V±20%
300V±20%
350V±20%
400V±20%
470V±20%
600V±20%
Impulse
Sparkover
Voltage
100V/μs (V)
450
500
600
650
750
800
900
1,300
Ο
Ο
Ο
Ο
Ο
Ο
Ο
Ο
Ο
-
-
-
-
*
1
*
1
*
1
*
1
*
1
*
2
R28-900-BHL
R28-151-BHL
R28-231-BHL
R28-251-BHL
R28-301-BHL
R28-351-BHL
R28-401-BHL
R28-471-BHL
R28-601-BHL
10,000
10
300
10
4
1.5
Electrical Specifications (High Voltage Type)
Safety
Standard
UL
1449
Model Number
DC Sparkover
Voltage
500V/s
(V)
800V±20%
1,000V±20%
1,500V±20%
2,400V±20%
3,000V±20%
3,600V±20%
4,000V±20%
4,500V±20%
Impulse
Discharge
Current
8/20μs (A)
Impulse
Life Test
8/20μs
1,000A (times)
Insulation
Resistance
min. (MΩ)
Capacitance
max. (pF)
Withstand
Voltage test
*
1
*
2
*
1
*
2
*
1
*
2
*
1
*
2
*
1
*
2
*
1
*
2
*
1
*
2
*
1
*
2
R28-801-BHL
R28-102-BHL
R28-152-BHL
R28-242-BJL
R28-302-BKL
R28-362-BKL
R28-402-BKL
R28-452-BKL
-
10,000
300
10
4
1.5
AC1,250V 3s
AC1,500V 60s
AC1,800V 3s
AC2,000V 60s
*¹ Rated voltage AC125V: Approved if it is connected to UL approved varistor (V1.0mA≥270V, D≥φ 14mm).
*² Rated voltage AC250V: Approved if it is connected to UL approved varistor (V1.0mA≥470V, D≥φ 14mm).
128
RF/Wirelessly
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