
Surgector Thyristors For Telecom Protection
Silicon Protection Circuits
Surface Mount SurgectorTM Transient Voltage Suppressors
237
www.littelfuse.com
5
SILICON PROTECTION
CIRCUITS
Absolute Maximum Ratings
Continuous Reverse Voltage, VDRM ............................58V to 300V
Transient Peak Surge Current, IPP B Types C Types
8 x 20µs
10 x 160µs
10 x 560µs
10 x 1000µs
Critical Rate of Rise of Voltage, dv/dt . ....................... ..2000V/µs
Operating Conditions
Temperature Range, (TA).................................-40
oC to 85oC
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. θJA is measured with the component mounted on an evaluation PC board in free air.
Electrical Specifications TC= 25oC, Unless Otherwise Specified
Thermal Information
Thermal Resistance (Typical, Note 1) θJA (oC/W)
J-Bend Package
C Types.............................................. ..85
B Type..................................................90
Maximum Storage Temperature Range. . . ..................- 65
oC to 150oC
Maximum Junction Temperature (Plastic Package). ....................150
oC
Maximum Lead Temperature (Soldering 5s). ......................... .300
oC
NOTES:
2. dv/dt = 100V/µs.
3. Double exponential current waveform.
4. One half cycle, 50 to 60Hz sine, non repetitive.
MODEL NUMBER
VDRM (MAX)
IDRM (MAX)
AT V DRM
VT (MAX)
AT 2 A (NOTE 2)
VBO (MAX)
AT I BO = 800mA
IH (MIN) (NOTE 3)
IPP (MAX) FOR 10
x 1000µs PULSE
(NOTE 4)
ITSM
CO (Typ)
AT 1MHz /
1V
RMS, DC
VµAV VmAA ApF
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
VTVDRM
VBO
IBO
FIGURE 2. PEAK PULSE CURRENT TEST WAVEFORM
100
90
50
10
O1T
T1T2
TIME
PERCENT OF PEAK VALUE
O1 = Virtual Origin of Wave
T = Time From 10% to 90% of Peak
T1 = Virtual Front Time = 1.25 • t
T2 = Virtual Time to Half Value (Impulse Duration)
Example: For an 8/20µs Current Waveform:
8µs = T1 = Virtual Front Time
20µs = T2 = Virtual Time to Half Value
200A
150A
100A
50A
400A
200A
150A
100A