Gas Discharge Tube (GDT) Products VIS Series

Gas Discharge Tube (GDT) Products
VIS Series
RoHS
VIS Series
Description
The VIS series is a two-terminal, bi-directional,
voltage triggered switch, specifically for ignition
circuits used in high pressure HID lighting. The gas
plasma trigger technology offers very fast switch
speeds with improved di/dt values compared to
similar function silicon based devices. Switching
voltages are fixed depending on the part number
selected.
Features
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ultimate reliability.
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when switch voltage
acheived. High di/dt
Schematic Symbol
Device Series Ratings:
allows for optimum
performance of ignition
transformers.
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481-1
Applications
Max Load Current
N"
Max Switching Frequency
25Hz - VIS 230
200Hz - VIS 400 to VIS 800
Operating Temperature TOP
¡$UP¡$
Storage Temperature TSTG
¡$UP¡$
Insulation Resistance
100 MΩ
Capacitance
1.5 pF
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electrical energy (such
as capacitive discharge)
at predetermined
voltages.
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systems and similar
circuits
Device Specifications
Discharge Peak
Current
Switching
Operations1
(Electrical Life)
Amps
300
VIS 400
500
100,000
VIS 600
1000
30,000
VIS 800
400
200,000
704-896
Part Number
VIS 230
Initial Break
Down Voltage2
Initial Voltage,
First Ignition
Value2
Electrical Life
Breakdown
Voltage Values
Electrical Life
First Ignition
Values3
# of cycles typ
Volts
2,000,000
200-255
Volts
Volts
Volts
280
200-280
280
350-460
460
340-460
500
528-627
720
510-690
750
950
680-920
1000
Notes:
1.
Number of switching operations depends on peak surge current, operating frequency and ambient temperature.
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2. Measured at 100 volts per second.
3.
Measured after 24 hours of darkness.
©2011 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com for current information.
Customer should verify actual device performance in their specific applications.
53
Revised: December 18, 2011
VIS Series
Gas Discharge Tube (GDT) Products
VIS Series
Electrical Life Time - Test Circuits
VIS 230 Life Test Circuit
VIS 400 Life Test Circuit
15 KΩ
10 KΩ
10 μH
0.5 μH
230 VAC
V
V
500 VDC
2.2 μF
680 nF
VIS 230
VIS 400
2,000,000 operations
10 - 25Hz
Testing Temperature 25ºC
100,000 operations
1 sec. on, 10 sec. off
Testing Temperature 25ºC
VIS 600 Life Test Circuit
VIS 800 Life Test Circuit
13 KΩ
68 KΩ
0.1 μH
0.5 μH
750 VDC
V
V
1000 VDC
470 nF
100 nF
VIS 600
VIS 800
30,000 operations
1 sec. on, 10 sec. off
Testing Temperature 25ºC
200,000 operations
1 sec. on, 10 sec. off
Testing Temperature 25ºC
Soldering Parameters - Wave Soldering (Thru-Hole Devices)
Recommended Process Parameters:
280
Wave Parameter
260
240
Lead-Free Recommendation
Preheat:
220
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200
180
160
140
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Temperature Minimum:
100° $
Temperature Maximum:
Preheat Time:
150° $
60-180 seconds
120
100
Solder Pot Temperature:
280° $.BYJNVN
Solder Dwell Time:
2-5 seconds
80
60
40
240
230
220
210
200
190
180
170
160
150
140
130
120
110
90
100
80
70
60
50
40
20
0
0
30
20
10
Temperature (°C) - Measured on bottom side of board
300
Time (Seconds)
Cooling Time
Preheat Time
Dwell Time
Soldering Parameters - Hand Soldering
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Heating Time: 5 seconds max.
VIS Series
54
Revised: December 18, 2011
©2011 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com for current information.
Customer should verify actual device performance in their specific applications.
Gas Discharge Tube (GDT) Products
VIS Series
Packaging Dimensions
<1.2 Max. Lead Bend
254.0 - 356.0
[10.0 - 14.0]
<0.8 Max
52.4
[2.063]
Direction of Feed
80.0
[3.15]
22.8
[0.898]
6.4
[0.252]
5.0 Pitch
[0.197]
Part Numbering System
Dimensions in mm (inch)
VIS 600
62 ± 2
[2.44 ± 0.079]
VIS Series
Nominal Break Down Voltage
(230, 400, 600 or 800)
ø8.0 ± 0.2
[0.315 ± 0.008]
VIS 230:
ø0.8 ± 0.1
[0.032 ± 0.004]
VIS 400/600/800:
ø1.00 +0.1
6.05 ± 0.2
[0.238 ± 0.008]
[0.039 ± 0.004]
Mechanical Specifications:
Material and
Plating
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Device Plating: Nickel @ 2-5 microns
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Device
Marking
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Blue ink with negative print
©2011 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com for current information.
Customer should verify actual device performance in their specific applications.
55
Revised: December 18, 2011
VIS Series