LT800 [LITTELFUSE]
Switching Gas Discharge Tubes - Gas Plasma Voltage Dependent Switches; 开关气体放电管 - 等离子气体压敏开关
| 型号： | LT800 |
| 厂家： | 
LITTELFUSE |
| 描述： | Switching Gas Discharge Tubes - Gas Plasma Voltage Dependent Switches |
| 文件： | 总2页 (文件大小：111K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Switching Gas Discharge Tubes
Gas Plasma Voltage Dependent Switches
RoHS
LT Series
The LT Series is a 2-terminal bi-directional, voltage triggered
switch is designed for ignition circuits used in high pressure HID
lighting. Switching voltages for the devices are fixed depending
on the part number selected. The gas plasma trigger technology
offers very fast switching speeds, resulting in significantly better
di/dt values when compared to silicon based SIDAC devices.
Due to the high switching voltage of the devices, step-up
transformer sizes and specifications can be reduced saving
cost, size and weight.
Features
• RoHS compliant
• Ceramic chamber for ultimate reliability.
• Very high switching speed once switching voltage has
been reached, resulting in high di/dt to be generated
enabling the best performance to be extracted from
ignition transformers.
• Tape and reel to EIA 481-1
Applications
• For switching stored electrical energy (such as capacitive
discharge) at predetermined voltages.
• Designed for ignition circuits used in high pressure
HID lighting.
LT xxx SM
+0.20
- 0.20
8
+0.20
- 0.20
6
+4
60.0
LTxxx A
Dimensions in mm
ORDERING INFORMATION
Mechanical Specifications:
Weight (ballast ciruit only):
1.42g (0.049oz.)
Materials:
Electrode Base: Copper alloy
Electrode Plating material: Bright Sn
Body: Ceramic
Littelfuse ‘LF’ marking, voltage and
product code (red print)
800
LT
V
BO
Package Type
Packaging
Device Marking:
A= Axial lead, tape and Reel
SM= Surface Mount
316
www. lit t elf us e. c om
Switching Gas Discharge Tubes
Gas Plasma Voltage Dependent Switches
RoHS
LT Series
Device Ratings and Specifications
(3)
(4)
(2)
I
BO
(1)
V
to V
T
C
V @ 5A
T
(V)
Part
Number
V
I
V
BO
(nS)
O
S
DRM
(A)
BO
(mA)
(pF)
(V)
7
(V)
LT230
LT800
195 –265
680 – 920
184 – 276
640 - 960
15
15
1.0
1.0
50
50
2.0
2.0
25
25
Electrical Life:
(5)
Switching Cycles
………………………………………………………… 400,000
(5)
Peak Discharge Current
………………………………………………………. 400 A
Maximum Ratings:
Max Switching Frequency ………………………………………………………. 100 Hz
Storage Temperature T
STG
……………………………………………………… -40 - +150˚C
……………………………………………………… -40 - +150˚C
Operating Temperature
Notes:
(1) Measured on recommended test circuit (fig 1.)
(2) Measured @ 100 Volts DC
(3) Current required for transition to on-state
(4) Measured @ 1 MHz, zero Volt bias
(5) Measured on recommended test circuit (fig 2.)
Definitions:
V
V
V
I
– Breakover Voltage
BO
– Switching Voltage
S
T
@ 5A – Nominal Off-state Voltage at 5A
– Off-state Current
DRM
I
– Nominal Breakover Current
BO
C
- Max Capacitance
o
V
to V – Max switching time from V
to V
T
BO
T
BO
51KΩ
20KΩ
O.C. DC voltage =1000
P.V.D.
0.4µH
V
V
1000Vdc
0.22µF
330nF
LT device
LT device
Fig 1. Recommended breakover voltage test circuit
(Discharge current = 10-20mA, sensitivity of
Peak Voltage Detect = 10-30mA)
Fig 2. Recommended Life Circuit
317
www. lit t elf us e. c om
相关型号：
LT8001/6S433JT26
RESISTOR, TEMPERATURE DEPENDENT, PTC, 43000ohm, THROUGH HOLE MOUNT, AXIAL LEADED
KOA
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