3R-8-S SERIES
Gas Discharge Tube (GDT) Data Sheet
Features
■
Provide ultra-fast response to surge voltage from slow-rising
■
■
■
■
■
■
■
■
■
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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*10.0mm
Storage and operating temperature: -40℃ ~ +85℃
Meets MSL level 1, per J-STD-020
Safety certification: E244458
Applications
■
■
■
■
Repeaters, Modems
Telephone Interface, Line cards
Data communication equipment
Line test equipment
Part Number Code
3
R
M
8
S
Electrical
Characteristics
M:10KA
P: 20KA
Electrode Numbers
3R: 3 Electrodes
DC
Spark-over
Voltage
Lead Type
M: SMD
S:Square electrode
Dimensions
8: 8.0mm×10.0mm
Marking
: BrightKing Logo
3RM090-8 : Device Marking Code
YXXX
: Date Code
Revision: GDT-3R-8-S SERIES-001(A1)
2/5
http://brightking.pulseelectronics.com
3R-8-S SERIES
Dimensions
D
10.6
Symbol
D
Dimension (mm)
Spec.
8.0
7.5
9.0
10.0
0.5
1.5
Tolerance
±0.2
±0.2
±0.2
±0.3
±0.2
±0.2
T
D1
D
8
D1
D2
2.1
1.1
D
2
B1
B
T
B
B1
Recommended Pad Size
Electrical Characteristics
DC
Spark-over
Voltage
100V/s
(V)
3RM075M-8-S
3RM090M-8-S
3RM150M-8-S
3RM200M-8-S
3RM230M-8-S
3RM350M-8-S
3RM400M-8-S
3RM470M-8-S
3RM600M-8-S
3RP075M-8-S
3RP090M-8-S
3RP150M-8-S
3RP200M-8-S
3RP230M-8-S
3RP350M-8-S
3RP400M-8-S
3RP470M-8-S
3RP600M-8-S
75±20%
90±20%
150±20%
200±20%
230±20%
350±20%
400±20%
470±20%
600±20%
75±20%
90±20%
150±20%
200±20%
230±20%
350±20%
400±20%
470±20%
600±20%
Part
Number
Maximum
Impulse
Spark-over
Voltage
1000V/μs
(V)
700
700
700
700
800
900
1000
1100
1300
700
700
700
700
800
900
1000
1100
1300
Nominal
Impulse
Discharge
Current
8/20μs
10times
(KA)
10
10
10
10
10
10
10
10
10
20
20
20
20
20
20
20
20
20
Alternating
Discharge
Current
50Hz,1sec
(A)
10
10
10
10
10
10
10
10
10
20
20
20
20
20
20
20
20
20
Impulse
Life
10/1000μs
100A
(times)
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
Minimum
Insulation
Resistance
Test
Voltage
DC(V)
25
50
100
100
100
100
100
250
250
25
50
100
100
100
100
100
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
Maximum
Capacitance
1MHz
(GΩ)
(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
Device
Marking
Code
3RM075-8
3RM090-8
3RM150-8
3RM200-8
3RM230-8
3RM350-8
3RM400-8
3RM470-8
3RM600-8
3RP075-8
3RP090-8
3RP150-8
3RP200-8
3RP230-8
3RP350-8
3RP400-8
3RP470-8
3RP600-8
Revision: GDT-3R-8-S SERIES-001(A1)
3/5
http://brightking.pulseelectronics.com
3R-8-S SERIES
Electrical Ratings
Items
DC Spark-over
Voltage
Maximum Impulse
Spark-over Voltage
Test Condition/Description
The voltage is measured with voltage ramp dv/dt=100V/s. Test is between
each side electrode and center electrode.
The maximum impulse spark-over voltage is measured with voltage ramp
dv/dt=1000V/μs. Test is between each side electrode and center electrode.
Maximum surge current that can be applied through center electrode with
8/20μs waveform, for 10 times with 3min interval time, which will be equally
divided between each side electrode to center electrode.
Crest value
100
90
Requirement
Impulse
Discharge Current
Current (%)
To meet
50
20µs
10
0
8µs
Time
Impulse Width
the specified
value
Alternating
Discharge Current
Insulation
Resistance
Rated RMS value of AC current at 50Hz, 1 sec. for 10 times with interval
time 3 min. Test is between each side electrode and center electrode.
The resistance of gas tube shall be measured between each side electrodes
and center electrode.
The capacitance of gas tube shall be measured between each side
electrodes and center electrode.
Test frequency: 1MHz
Capacitance
Recommended Soldering Conditions
Reflow Soldering
T
P
Ramp-up
T
L
T
S max
Temperature
t
P
Critical Zone
T
L
to T
P
t
L
T
S min
t
S
Preheat
Ramp-down
25
t 25℃ to Peak
Time
Revision: GDT-3R-8-S SERIES-001(A1)
4/5
http://brightking.pulseelectronics.com
3R-8-S SERIES
Recommended Conditions
Profile Feature
Average ramp-up rate (T
L
to T
P
)
Preheat
-Temperature Min (T
S min
)
-Temperature Max (T
S max
)
-Time (min to max) (ts)
T
S max
to T
L
-Ramp-up Rate
Time maintained above:
-Temperature (T
L
)
-Time (t
L
)
Peak Temperature (T
P
)
Time within 5℃ of actual Peak Temperature (t
P
)
Ramp-down Rate
Time 25℃ to Peak Temperature
Pb-Free Assembly
3℃/second max.
150℃
200℃
60-180 seconds
3℃/second max.
217℃
60-150 seconds
260℃
20-40 seconds
6℃/second max.
8 minutes max.
Packaging
SMD Packing (Tape & Reel)
Tape
Symbol
W
P0
P
P2
D0
E
F
A0
K0
B0
T
Reel
t
D
d
Dimension (mm)
Spec.
Tolerance
16.00
±0.20
4.00
±0.10
16.00
±0.10
2.00
±0.10
1.55
±0.10
1.75
±0.10
7.50
±0.10
10.30
±0.10
8.40
±0.10
8.40
±0.10
0.50
±0.05
330.00
13.00
20.00
2.00
±2.00
±0.50
±2.00
±0.20
D
d
L
t
L
Quantity: 300pcs
Revision: GDT-3R-8-S SERIES-001(A1)
5/5
http://brightking.pulseelectronics.com
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