3RXXXXM-8SD SERIES
Data Sheet
Gas Discharge Tube
Features
■
Provide ultra-fast response to surge voltage from slow-rising surge of
100V/s to rapid-rising surge of 1KV/μs.
■
Stable breakdown voltage.
■
High insulation resistance.
■
Low capacitance (≤2pF)
■
High holdover voltage
■
Large absorbing transient current capability.
■
Micro-Gap Design
■
Size: 8.0mm*10.5mm
■
Storage and operational temperature: -40℃ ~ +85℃
■
Meets MSL level 1, per J-STD-020
Applications
■
■
■
■
Repeaters, Modems.
Telephone Interface, Line cards.
Data communication equipment.
Line test equipment
Part Number Code
Electrical
Characteristics
M：10KA
P： 20KA
DC
Spark-over
Voltage
Lead Type
M：SMD
Electrode Numbers
3R: 3 Electrodes
Dimensions
8: 8.0mm*10.5mm
Revision：24-May-13
www.brightking.com
3RXXXXM-8SD SERIES
Dimensions
Dimension (mm)
Items
Spec.
D
D1
T
B
B1
8.0
7.6
10.5
0.5
2.0
Tolerance
+0.2, -0.8
±0.2
±0.5
±0.1
±0.2
Electrical Characteristics
DC
Spark-over
Voltage
100V/s
(V)
3RM075M-8
3RM090M-8
3RM150M-8
3RM200M-8
3RM230M-8
3RM350M-8
3RM400M-8
3RM470M-8
3RM600M-8
3RM800M-8
3RP075M-8
3RP090M-8
3RP150M-8
3RP200M-8
3RP230M-8
3RP350M-8
3RP400M-8
3RP470M-8
3RP600M-8
3RP800M-8
SD
SD
SD
SD
SD
SD
SD
SD
SD
SD
SD
SD
SD
SD
SD
SD
SD
SD
SD
SD
75±20%
90±20%
150±20%
200±20%
230±20%
350±20%
400±20%
470±20%
600±20%
800±20%
75±20%
90±20%
150±20%
200±20%
230±20%
350±20%
400±20%
470±20%
600±20%
800±20%
Maximum
Impulse
Spark-over
Voltage
1000V/μs
(V)
700
700
700
700
700
850
850
950
1300
1500
700
700
700
700
700
850
850
950
1300
1500
Nominal
Impulse
Discharge
Current
②
8/20μs
10times
(KA)
10
10
10
10
10
10
10
10
10
10
20
20
20
20
20
20
20
20
20
20
Alternating
Discharge
Current
50Hz,1sec
(A)
10
10
10
10
10
10
10
10
10
10
20
20
20
20
20
20
20
20
20
20
Minimum
Insulation
Resistance
Test
Voltage
DC(V)
25
50
100
100
100
100
100
250
250
250
25
50
100
100
100
100
100
250
250
250
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
Impulse
Life
10/1000μs
100A
(times)
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
Maximum
Capacitance
Part
Number
Type
①
(GΩ)
1MHz
(pF)
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
Device
Marking
Code
3RM075-8
3RM090-8
3RM150-8
3RM200-8
3RM230-8
3RM350-8
3RM400-8
3RM470-8
3RM600-8
3RM800-8
3RP075-8
3RP090-8
3RP150-8
3RP200-8
3RP230-8
3RP350-8
3RP400-8
3RP470-8
3RP600-8
3RP800-8
Notes：① Specific code by request.
②
Impulse discharge current for GDT is the total current equally divided between each line to ground.
Revision：24-May-13
www.brightking.com
3RXXXXM-8SD SERIES
Electrical Ratings
Items
DC Spark-over
Voltage
Maximum Impulse
Spark-over Voltage
Test Condition/Description
The voltage is measured with a low rate of rise dv/dt=100V/s.
The maximum impulse breakdown voltage is measured with a rise time of
dv/dt=1000V/μs.
The maximum current applying a waveform of 8/20μs that can be applied
across the terminals of the gas tube without causing the gas tube to
change more than ±25% from its initial measured DC breakdown voltage.
Dwell time between pulses is 3 minutes.
Requirement
Impulse
Discharge Current
To meet
the specified
value
Alternating
Discharge Current
Rated RMS value of AC current at 50Hz, 1 sec. 10 times. Intervals: 3 min.
DC breakdown voltage may not change more than ±25% from its initial
measured DC breakdown voltage.
IR＞10
8
ohms (-20%, +30% for 70~90V).
The resistance of gas tube shall be measured each terminal each other
terminal. Please see above spec.
The capacitance of gas tube shall be measured each terminal each other
terminal.
Test frequency: 1MHz
Insulation
Resistance
Capacitance
Revision：24-May-13
www.brightking.com
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