TISP4350H3LMS(2010) データシートの表示（PDF） - Bourns, Inc
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TISP4350H3LMS Datasheet PDF : 13 Pages
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TISP4xxxH3LM Overvoltage Protector Series
ITU-T K.20/21 Rating............................ 8 kV 10/700, 100 A 5/310
LM Package (Top View)
Ion-Implanted Breakdown Region
Precise and Stable Voltage
Low Voltage Overshoot under Surge
Device
‘4070
VDRM
V
58
V(BO)
V
70
T(A)
1
NC
2
R(B)
3
NC - No internal connection on pin 2
MD4XAT
‘4080
65
80
‘4095
‘4115
75
95
90
115
LMF Package (LM Package with Formed Leads) (Top View)
‘4125
‘4145
‘4165
‘4180
100
125
120
145
135
165
145
180
T(A)
1
NC
2
3
R(B)
OBSOLETE ‘4220
‘4240
‘4250
‘4260
‘4290
‘4300
‘4350
‘4395
‘4400
160
220
180
240
190
250
200
260
220
290
230
300
275
350
320
395
300
400
Rated for International Surge Wave Shapes
Waveshape
2/10 µs
8/20 µs
10/160 µs
Standard
ITSP
A
GR-1089-CORE 500
IEC 61000-4-5
300
FCC Part 68
250
NC - No internal connection on pin 2
Device Symbol
T
R
SD4XAA
Terminals T and R correspond to the
alternative line designators of A and B
MD4XAKB
10/700 µs
ITU-T K.20/21 200
Low Differential Capacitance ...................................... 80 pF max.
10/560 µs
10/1000 µs
FCC Part 68
160
GR-1089-CORE 100
................................................UL Recognized Component
Description
These devices are designed to limit overvoltages on the telephone line. Overvoltages are normally caused by a.c. power system or lightning
flash disturbances which are induced or conducted on to the telephone line. A single device provides 2-point protection and is typically used
for the protection of 2-wire telecommunication equipment (e.g. between the Ring and Tip wires for telephones and modems). Combinations
of devices can be used for multi-point protection (e.g. 3-point protection between Ring, Tip and Ground).
The protector consists of a symmetrical voltage-triggered bidirectional thyristor. Overvoltages are initially clipped by breakdown clamping
until the voltage rises to the breakover level, which causes the device to crowbar into a low-voltage on state. This low-voltage on state
causes the current resulting from the overvoltage to be safely diverted through the device. The high crowbar holding current helps prevent
d.c. latchup as the diverted current subsides.
How to Order
Device
Pa ckag e
Carrier
Order As
Bulk Pack
Straight Lead DO-92 (LM)
TISP4xxxH3LM
Tape and Reeled
TISP4xxxH3LM-S
TISP4xxxH3LMR-S
Formed Lead DO-92 (LMF) Tape and Reeled TISP4xxxH3LMFR-S
Insert xxx value corresponding to protection voltages of 070, 080, 095, 115 etc.
NOVEMBER 1997 - REVISED JANUARY 2010
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
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