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PDF SMTHDT120 Data sheet ( Hoja de datos )
| Número de pieza | SMTHDT120 | |
| Descripción | TRISILTM DISCRETE SOLUTION FOR ISDN PROTECTION | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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® SMTHDTxx
Application Specific Discretes
TRISIL™
A.S.D.TM
DISCRETE SOLUTION FOR ISDN PROTECTION
FEATURES
UNDIRECTIONAL CROWBAR
PROTECTION.
PEAK PULSE CURRENT:
IPP = 75 A , 10/1000 µs.
HOLDING CURRENT = 150mA.
BREAKDOWN VOLTAGE:
SMTHDT58 = 58V.
SMTHDT80 = 80V.
SMTHDT120 = 120V.
PACKAGES:
SMTHDTxx = SURFACE MOUNT PACKAGE.
SMC
DESCRIPTION: TRIBALANCED PROTECTION
Dedicated protection devices for ISDN LINE
CARD and high speed data telecom lines.
Used with the recommended configuration using
3 components, they will provide =
- Dual bidirectionnal protection, with fixed
breakdown voltage in both common and
differential modes.
- Low capacitancesfrom lines to ground.
- Very good capacitance balance : ∆C= 30 pF.
FUNCTIONAL DIAGRAM.
A
K
ABSOLUTE RATINGS (limiting values) (-40°C ≤ Tamb ≤ +85°C)
Symbol
IPP
ITSM
di/dt
dv/dt
Tstg
Tj
Parameter
Peak pulse current
10/1000 µs
8/20 µs
Non repetitive surge peak on-state tp = 20 ms
current
Critical rate of rise of on-state current Non repetitive
Critical rate of rise of off-state voltage
67% VBR
Storage and operating junction temperature range
Value
75
150
30
100
5
- 40 to + 150
+ 150
THERMAL RESISTANCES
Symbol
Parameter
Rth (j-l) Junction-leads Thermal Resistance
April 1999 - Ed: 1A
SMC
Value
200
Unit
A
A
A/µs
KV/µs
°C
°C
Unit
°C/W
1/6
1 page  
APPLICATION NOTE
Discrete ISDN Protection solution
LINE A
3 TPUxx
or
3 SMTHDTxx
LINE B
A
B
GND
SMTHDTxx
EQUIVALENT PROTECTION FUNCTION
U Interface Protection
A R or PTC
TPUxx
GND
B R or PTC
S Interface Protection
A
TPUxx
B
GND R or PTC
R or PTC
A
TPUxx
B
R or PTC
GND R or PTC
This topology assumes the same breakdown voltage level in positive and negative for differential or com-
mon mode surge.
5/6
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet SMTHDT120.PDF ] | |
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