Gas Discharge Tube：GQF Series
：
SMD 3-Electrode
Φ5*7.2
mm Type
Features
1. RoHS compliant
2. Rugged ceramic-metal construction
3. DC spark-over voltage：75~1100V
4. Low capacitance
5. Agency recognition :UL/cUL
Recommended Applications
1. Data transmission lines
2. Communication lines
3. CATV system
4. Power distribution system
5. Power supplier
6. Test equipment
7. Instrumentation circuits
Part Number Code
G
1
Q
2
F
3
3
4
R
5
0
6
7
7
5
8
N
9
B
10
M
11
12
13
Product Code
G
THINKING Gas
Discharge Tube
Electrode Number
3R
3 Electrodes
Lead Wire Style
N
No Lead
Packaging
B
T
R
Bulk
Ammo
Taping
Reel
Taping
Internal Control
Code
Type Series (size)
QF
Φ5.0*T7.2
DC
Spark-over
Voltage
070
230
600
14B
25B
70V
230V
600V
1400V
2500V
M
Product Type
SMD Round Type
THINKING ELECTRONIC INDUSTRIAL Co., LTD.
All specification are subject to change without notice.
1
www.thinking.com.tw
2010.09
Gas Discharge Tube：GQF Series
：
SMD 3-Electrode
Φ5*7.2
mm Type
Characteristics
DC
Breakdown
Voltage
Max. Impulse
Breakdown
Voltage
Impulse
Discharge
Current
(8/20µs)
1
time
10
times
Impulse
Life
(10/1000µs)
Normal
Alternating
Discharge
Current
50Hz,
1Sec
Single
9 Cycles
DC
Holdover
voltage
Minimum
Insulation
Resistance
Maximum
Capacitance
(1MHz)
Safety
approvals
Type
(100V/S)
100V/µs
1KV/µs
200A
<150ms
UL
(V)
GQF3R075NRM
GQF3R090NRM
GQF3R120NRM
GQF3R150NRM
GQF3R200NRM
GQF3R230NRM
GQF3R250NRM
GQF3R350NRM
GQF3R400NRM
GQF3R420NRM
GQF3R470NRM
GQF3R600NRM
GQF3R800NRM
GQF3R11BNRM
75±20%
90±20%
120±20%
150±20%
200±20%
230±20%
250±20%
350±20%
400±20%
420±20%
470±20%
600±20%
800±20%
1100±20%
(V)
600
500
500
500
600
600
600
650
700
700
800
900
1150
1450
(V)
700
600
600
600
700
700
700
750
800
800
900
1000
1400
1750
10
10
10
10
15
15
15
15
15
15
15
10
10
10
(KA)
5
5
5
5
10
10
10
Times
5
5
5
5
10
10
10
300
10
10
10
10
5
5
5
10
10
10
10
5
5
5
(A)
30
30
30
30
60
60
60
60
60
60
60
60
30
30
(V)
52
52
80
80
135
135
135
135
135
135
135
135
135
135
(G )
(pF)
1449/
cUL
UL
497B
√
√
√
√
√
√
√
1
2
√
√
√
√
√
√
√
Note1: UL / 497B→ File No. E245070, UL / 1449 3rd→ File No.E314979
Note 2: Insulation resistance test conditions:
DC Breakdown Voltage
70-90V
120-400V
420-800V
1000-2000V
DC Measuring Voltage
50V
100V
250V
500V
Dimension
7.2±0.3
5.0±0.1
0.4
1.5
0.4
5.0±0.1
THINKING ELECTRONIC INDUSTRIAL Co., LTD.
All specification are subject to change without notice.
2
www.thinking.com.tw
2010.09
Gas Discharge Tube：GQF Series
：
SMD 3-Electrode
Φ5*7.2
mm Type
Marking
GQF
Packaging
Taping
P0
D
E
F
W
t
P
K
Quantity： 900pcs per reel (13”)
：
”
Unit: mm
ITEM
Spec.
Tol.
P
12.0
±0.1
P0
4.0
±0.1
W
16.0
±0.3
F
7.5
±0.1
E
1.75
±0.1
D
Φ1.55
±0.05
K
5.5
±0.1
t
0.5
±0.05
330 ± 4.0
>1.5
100
typ.
18typ.
THINKING ELECTRONIC INDUSTRIAL Co., LTD.
All specification are subject to change without notice.
3
www.thinking.com.tw
2010.09
Gas Discharge Tube：GQF Series
：
SMD 3-Electrode
Φ5*7.2
mm Type
Storage Conditions of GDT
(I) Storage conditions:
1. Storage Temperature: -10
℃
~ +40
℃
.
2. Relative humidity:
≦
75%RH.
3. Gas discharge tube must be kept away from sunlight and stored in a non-corrosive atmosphere.
(II) Shelf life: 1 year.
THINKING ELECTRONIC INDUSTRIAL Co., LTD.
All specification are subject to change without notice.
4
www.thinking.com.tw
2010.09
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