Silicon Protection Circuits
236
w w w . l i t t e l f u s e . c o m
Surface Mount Surgector
TM
Transient Voltage Suppressors
Surgector Thyristors For Telecom Protection
Designed to suppress lightning and other transients, Surgector suppressors
are primarily intended for operation on the telephone line "tip and ring"
environment in order to protect telecommunications CPE and COE
products in conjunction with the Littelfuse 461 series Telecom Nano
2
fuse.
These devices provide secondary protection for telecommunication
equipment such as telephone, MODEM, line card and other devices
subject to damage from transient over voltage events. Surgectors can be an
integral part of a Telephone Line Protector Unit, meeting AC Power Cross
criteria when used in association with properly selected resistor/ PTC/ fuse
combinations such as the Littelfuse 461 series fuse. Littelfuse Surface
Mount Surgectors are manufactured using a silicon thyristor technology,
offering bidirectional voltage clamping for transients of either polarity
from a single chip.
The Surgector devices described in this data sheet are manufactured
with the DO-214AA low profile case style and are second source
equivalent parts to industry "SIDAC" types. Surface Mount Surgector
Suppressors are supplied in embossed carrier tape on 330mm
(13in) reels.
Ordering Information
Features
Rated for Telecom Industry Transient Surge Levels:
- Telcordia (Bellcore) GR-1089
- ITU CCITT K.20/.21
- FCC PART 68
- UL 60950
Low Profile Package, Compatible with PCMCIA Cards, UL-94V-0 Listed
Offered in the Most Common VDRM Voltage Types
Low On-State Voltage
Cross to Common Industry Types
High Minimum Holding Current
AGENCY APPROVALS:
Recognized under the components program of
Underwriters Laboratories.
AGENCY FILE NUMBERS:
UL E135010.
Applications
Secondary Protection for:
- DSL modem
- Set Top Box
- Telephone
- FAX
- Modem
- Line Cards
- SLIC
- TLPU Modules
Alarm Systems
CATV Lines
Cable Modems
Symbol
PART
NUMBER
V
BO
(MAX)
ATI
BO
=800MA
I
PP
(MAX)
10 x 1000
s Pulse
SGT0640SBT
SGT0720SBT
SGT2300SBT
SGT2900SBT
SGT3100SBT
SGT0640SCT
SGT0720SCT
SGT1300SCT
SGT2300SCT
SGT2900SCT
SGT3100SCT
SGT3500SCT
SGT1500SCT
B TYPES
C TYPES
77
88
260
330
350
77
88
160
260
330
350
400
180
50
50
50
50
50
100
100
100
100
100
100
100
100
(V)
(A)
I
PP
(MAX)
2 x 10
s Pulse
(A)
320
320
200
200
200
600
600
600
500
500
500
600
NOTE: T Suffix indicates Tape and Reel.
500
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Surgector Thyristors For Telecom Protection
Silicon Protection Circuits
Surface Mount Surgector
TM
Transient Voltage Suppressors
237
w w w . l i t t e l f u s e . c o m
5
SILICON PR
O
TECTION
CIRCUITS
Absolute Maximum Ratings
Continuous Reverse Voltage, VDRM . . . . . . . . . . . . . . . . . . . . . . . . . . . .58V to 300V
Transient Peak Surge Current, IPP
B Types C Types
8 x 20s
10 x 160s
10 x 560s
10 x 1000s
Critical Rate of Rise of Voltage, dv/dt . . . . . . . . . . . . . . . . . . . . . . . . . . 2000V/s
Operating Conditions
Temperature Range, (TA). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40
o
C to 85
o
C
CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of the device
at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTE:
1.
JA is measured with the component mounted on an evaluation PC board in free air.
Electrical Specifications
TC = 25
o
C, Unless Otherwise Specified
Thermal Information
Thermal Resistance (Typical, Note 1)
JA (
o
C/W)
J-Bend Package
C Types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
B Type.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Maximum Storage Temperature Range. . . . . . . . . . . . . . . . . . . . .- 65
o
C to 150
o
C
Maximum Junction Temperature (Plastic Package). . . . . . . . . . . . . . . . . . . . . 150
o
C
Maximum Lead Temperature (Soldering 5s). . . . . . . . . .. . . . . . . . . . . . . . . . . 300
o
C
NOTES:
2. dv/dt = 100V/
s.
3. Double exponential current waveform.
4. One half cycle, 50 to 60Hz sine, non repetitive.
MODEL NUMBER
V
DRM
(MAX)
I
DRM
(MAX)
AT V
DRM
V
T
(MAX)
AT 2 A
(NOTE 2)
V
BO
(MAX)
AT I
BO
= 800mA
I
H
(MIN)
(NOTE 3)
I
PP
(MAX) FOR 10
x 1000
s PULSE
(NOTE 4)
I
TSM
C
O
(Typ)
AT 1MHz /
1V
RMS, DC
V
A
V
V
mA
A
A
pF
B TYPES
SGT0640SBT
58
5
5
77
150
50
25
80
SGT0720SBT
63
5
5
88
150
50
25
80
SGT2300SBT
190
5
5
260
150
50
25
30
SGT2900SBT
250
5
5
330
150
50
25
30
SGT3100SBT
275
5
5
350
150
50
25
30
C TYPES
SGT0640SCT
58
5
5
77
150
100
65
280
SGT0720SCT
63
5
5
88
150
100
65
280
SGT1300SCT
120
5
5
160
150
100
65
150
140
5
5
190
150
100
65
150
SGT2300SCT
190
5
5
260
150
100
65
100
SGT2900SCT
250
5
5
330
150
100
65
70
SGT3100SCT
275
5
5
350
150
100
65
70
SGT3500SCT
300
5
5
400
150
100
65
55
SGT1500SCT
2V
FIGURE 1. V-I CHARACTERISTICS
IT
IH
IDRM
VT
VDRM
VBO
IBO
FIGURE 2. PEAK PULSE CURRENT TEST WAVEFORM
100
90
50
10
O
1
T
T
1
T
2
TIME
PERCENT OF PEAK
V
ALUE
O
1
= Virtual Origin of Wave
T = Time From 10% to 90% of Peak
T
1
= Virtual Front Time = 1.25 t
T
2
= Virtual Time to Half Value (Impulse Duration)
Example: For an 8/20
s Current Waveform:
8
s = T
1
= Virtual Front Time
20
s = T
2
= Virtual Time to Half Value
200A
150A
100A
50A
400A
200A
150A
100A
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Surface Mount Surgector
TM
Transient Voltage Suppressors
Surgector Thyristors For Telecom Protection
Silicon Protection Circuits
238
w w w . l i t t e l f u s e . c o m
Typical Performance Curves
MODEL
NUMBER
(NOTE 5)
VARIATION OF
OF V
BO
vs TEMP
T
A
= -40
o
C TO 85
o
C
(%)
(NOTE 6)
TYPICAL V
T
AT PEAK
I
T
, T
A
= 25
o
C VOLTS
(V)
(NOTE 7)
VARIATION OF C
O
vs
FREQUENCY
(%)
(NOTE 8)
MAXIMUM CRITICAL
RATE OF RISE OF
ON-STATE CURRENT
(dl/dT) (A/
s)
(NOTE 9)
MAXIMUM I
PP
FOR
2x10
s WAVEFORM
(A)
SGT0640SBT
-6 to +6
4.2 at 50A
1
120
320
SGT0720SBT
-6 to +6
4.2 at 50A
1
120
320
SGT2300SBT
-5 to +4
3.2 at 50A
1
120
200
SGT2900SBT
-4 to +4
3.3 at 50A
1
120
200
SGT3100SBT
-4 to +4
3.3 at 50A
1
120
200
SGT0640SCT
-6 to +6
5.2 at 100A
1
250
600
SGT0720SCT
-6 to +6
5.2 at 100A
1
250
600
SGT1300SCT
-5 to +1
4.1 at 100A
1
250
600
NOTES:
5. Typical percentage shift from normalized 25
o
C value (positive coefficient).
6. Typical maximum peak forward voltage drop at specified peak current.
7. Typical percentage shift with test frequency ranging from 1kHz to 1MHz/1V
RMS
(for two constant DC bias voltages of 0V and 50V).
8. dI/dT for leading edge of sine wave where 1/2 rated I
PP
is reached at initial 30
o
of the sine.
9. Rated I
PP
value for the 2x10
s waveform above which could cause device damage.
SGT2300SCT
-5 to +4
4.9 at 100A
1
250
500
SGT2900SCT
-4 to +4
7.2 at 100A
1
250
500
SGT3100SCT
-4 to +4
7.2 at 100A
1
250
500
SGT3500SCT
-3 to +4
7.7 at 100A
2
250
500
SGT1500SCT
-5 to +1
4.1 at 100A
1
250
600
FIGURE 3. TYPICAL HOLDING CURRENT vs JUNCTION
TEMPERATURE
-40
-20
0
20
40
60
80
100
120
0
0.5
1.0
1.5
2.0
2.5
3.0
TEMPERATURE (
o
C)
NORMALIZED T
O
25
o
C V
A
LUE
SGT0640SB
SGT0720SB
I
H
/I
H
A
T
25
o
C
TABLE 1. ELECTRICAL CHARACTERISTICS
FIGURE 4. TYPICAL HOLDING CURRENT vs JUNCTION
TEMPERATURE
-40
-20
0
20
40
60
80
100
120
0
0.5
1.0
1.5
2.0
2.5
3.0
TEMPERATURE (
o
C)
SGT2300SB
NORMALIZED T
O
25
o
C V
ALUE
I
H
/I
H
A
T
25
o
C
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Surgector Thyristors For Telecom Protection
Silicon Protection Circuits
Surface Mount Surgector
TM
Transient Voltage Suppressors
239
w w w . l i t t e l f u s e . c o m
5
SILICON PR
O
TECTION
CIRCUITS
Typical Performance Curves
(Continued)
FIGURE 5. TYPICAL HOLDING CURRENT vs JUNCTION
TEMPERATURE
FIGURE 6. TYPICAL HOLDING CURRENT vs JUNCTION
TEMPERATURE
FIGURE 7. TYPICAL HOLDING CURRENT vs JUNCTION
TEMPERATURE
FIGURE 8. TYPICAL HOLDING CURRENT vs JUNCTION
TEMPERATURE
FIGURE 9. TYPICAL HOLDING CURRENT vs JUNCTION
TEMPERATURE
FIGURE 10. TYPICAL HOLDING CURRENT vs JUNCTION
TEMPERATURE
-40
0
20
60
100
120
0
0.5
1.0
1.5
2.0
3.0
TEMPERATURE (
o
C)
80
40
-20
2.5
NORMALIZED T
O
25
o
C V
ALUE
I
H
/I
H
AT
2
5
o
C
SGT2900SB
SGT3100SB
-40
0
40
80
120
150
0
0.5
1.0
1.5
2.0
2.5
TEMPERATURE (
o
C)
SGT0640SC
SGT0720SC
NORMALIZED T
O
25
o
C V
ALUE
I
H
/I
H
AT
2
5
o
C
3.0
2.5
2.0
1.5
1.0
0.5
0
-40
0
40
80
120
TEMPERATURE (
o
C)
NORMALIZED T
O
25
o
C V
ALUE
I
H
/I
H
AT
2
5
o
C
3.0
2.5
2.0
1.5
1.0
0.5
0
-40
0
40
80
120
TEMPERATURE (
o
C)
-20
20
60
100
SGT2300SC
NORMALIZED T
O
25
o
C V
ALUE
I
H
/I
H
AT
2
5
o
C
3.0
2.5
2.0
1.5
1.0
0.5
0
-40
0
40
80
120
TEMPERATURE (
o
C)
-20
20
60
100
SGT2900SC
SGT3100SC
NORMALIZED T
O
25
o
C V
ALUE
I
H
/I
H
AT
2
5
o
C
2.5
2.0
1.5
1.0
0.5
0
-40
0
40
80
120
TEMPERATURE (
o
C)
-20
20
60
100
SGT3500SC
NORMALIZED T
O
25
o
C V
ALUE
I
H
/I
H
AT
2
5
o
C
SGT1500SC
SGT1300SC
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Surface Mount Surgector
TM
Transient Voltage Suppressors
Surgector Thyristors For Telecom Protection
Silicon Protection Circuits
240
w w w . l i t t e l f u s e . c o m
Typical Performance Curves
(Continued)
FIGURE 11. TYPICAL CAPACITANCE vs BIAS VOLTAGE
FIGURE 12. TYPICAL CAPACITANCE vs BIAS VOLTAGE
FIGURE 13. TYPICAL CAPACITANCE vs BIAS VOLTAGE
FIGURE 14. TYPICAL CAPACITANCE vs BIAS VOLTAGE
FIGURE 15. TYPICAL CAPACITANCE vs BIAS VOLTAGE
FIGURE 16. TYPICAL CAPACITANCE vs BIAS VOLTAGE
1000
500
100
50
10
0.1
10
BIAS (V)
CAP
A
C
IT
ANCE (pF)
1
1
00
SGT0640SB, SGT0720SB
f = 1MHz/1V
RMS
, T
A
= 25
o
C
1000
100
10
0.1
10
BIAS (V)
CAP
A
C
IT
ANCE (pF)
1
1
00
SGT2300SB
f = 1MHz/1V
RMS
, T
A
= 25
o
C
1000
100
10
0.1
10
BIAS (V)
CAP
A
C
IT
ANCE (pF)
1
1
00
SGT2900SB, SGT3100SB
f = 1MHz/1V
RMS
, T
A
= 25
o
C
50
500
1000
100
10
0.1
10
BIAS (V)
CAP
A
C
IT
ANCE (pF)
1
1
00
SGT0640SC, SGT0720SC
f = 1MHz/1V
RMS
, T
A
= 25
o
C
50
500
1000
100
10
0.1
10
BIAS (V)
CAP
A
C
IT
ANCE (pF)
1
1
00
SGT1300SC
f = 1MHz/1V
RMS
, T
A
= 25
o
C
500
50
1000
100
10
0.1
10
BIAS (V)
CAP
A
C
IT
ANCE (pF)
1
1
00
SGT2300SC
f = 1MHz/1V
RMS
, T
A
= 25
o
C
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