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SGT23B13, SGT27B13, SGT27B27
Data Sheet July 1999 File Number 3603.3
[ /Title (SGT2 3B13, SGT27 B13, SGT27 B27) /Subject (Bidirectional Transient Surge Suppressors (Surge ctor)) /Autho r () /Keywords (Surge ctor, TVS, Transient Suppression, Protection, Telecom,
Bidirectional Transient Surge Suppressors (TO-202 Surgector)
These surgector devices are designed to protect telecommunication equipment, data links, alarm systems, power supplies and other sensitive electrical circuits from damage by switching transients, lightning strikes, load changes, commutation spikes and line crosses. Bidirectional surgector devices are constructed with a thyristor whose gate region contains a special diffused section which acts as a zener diode. This zener diode section permits anode voltage turn on of the structure. Initial clamping by the zener diode section, and fast turn on by the thyristor, provide excellent voltage limiting even on very fast rise time transients. The thyristor also features high holding current, which allows the surgector to recover to its high impedance off state after a transient. All these devices are supplied in a 2 lead, modified TO-202 package.
Features
* Clamping Voltage . . . . . . . . . . . . . . . . . . . . . 230V or 270V * Rated for Peak Transient Surge Current * High Minimum Holding Current * Low On-State Voltage * UL Recognized File #E135010 to STD 497B
Applications
* Secondary Protectors for: - Telephone - FAX - Modem - Line Cards - SLIC * Alarm Systems
Packaging
MODIFIED TO-202
MT2 MT1
Equivalent Schematic Symbols
MT2 MT2 MT2
MT2 MT1
MT1
7-11
1-800-4-HARRIS or 407-727-9207 | Copyright
(c) Harris Corporation 1999
SGT23B13, SGT27B13, SGT27B27
Absolute Maximum Ratings
TC = 25oC SGT23B13 Continuous Off State Voltage: VDM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VRM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Transient Peak Surge Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ITSM 1s x 2s (Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8s x 20s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10s x 560s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10s x 1000s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . One Half Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50Hz to 60Hz (Note 2) One Second . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50Hz to 60Hz, Halfwave Operating Temperature (TA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Storage Temperature Range (TSTG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NOTES: 1. Unit designed not to fail open below: 900A. 2. One every 30s maximum.
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.
SGT27B13 235 235 300 200 125 100 60 30 -40 to 85 -40 to 150
SGT27B27 235 235 600 400 250 200 60 30 -40 to 85 -40 to 150
UNITS V V A A A A A A oC oC
200 200 300 200 125 100 60 30 -40 to 85 -40 to 150
Electrical Specifications
PARAMETER Off-State Current
At Case Temperature, TC = 25oC, Unless Otherwise Specified SYMBOL IDM, IRM TEST CONDITIONS Maximum Rated VDM, VRM TA = 25oC TA = 85oC IZ < 200A 270 230 270 VBO dv/dt = 100V/s IH 270 130 130 VT CO IT = 10A VDM = VRM = 50V, Frequency = 1MHz 2 mA mA mA V 345 240 345 V V V 325 270 325 V V V MIN TYP MAX UNITS
-
-
200 100
nA A
Clamping Voltage SGT27B27 SGT23B13 SGT27B13 Breakover Voltage SGT27B27 SGT23B13 SGT27B13 Holding Current SGT27B27 SGT23B13 SGT27B13 On-State Voltage Main Terminal Capacitance SGT27B27 SGT23B13 SGT27B13
VZ
-
80 50 50
-
pF pF pF
7-12
SGT23B13, SGT27B13, SGT27B27 Performance Curves
A VT 190 170 150 IT IH VBO mA CAPACITANCE (pF) 130 110 90 70 50 30 IDM V VDM VZ 10 0 20 40 60 80 100 120 140 160 180 200 VOLTAGE (V)
FIGURE 1. TYPICAL VOLT-AMPERE CHARACTERISTICS FOR ALL TYPES
FIGURE 2. TYPICAL CAPACITANCE vs VOLTAGE FOR SGT23B13 AND SGT27B13
1.2
300 270 CAPACITANCE (pF) 240 210 150 120 90 60 30 0 0 20 40 60 80 100 120 140 160 180 200
NORMALIZED ZENER VOLTAGE (V)
1.1
1
0.9
0.8 -40 -30 -20 -10 VOLTAGE (V)
0
10
20
30
40
50
60
70
80
90
AMBIENT TEMPERATURE (oC)
FIGURE 3. TYPICAL CAPACITANCE vs VOLTAGE FOR SGT27B27
FIGURE 4. NORMALIZED ZENER VOLTAGE vs TEMPERATURE FOR ALL TYPES
NORMALIZED BREAKDOWN VOLTAGE (V)
1.50 NORMALIZED HOLDING CURRENT (mA) 10 100 1,000 10,000
1.7 1.6 1.5 1.4 1.3 1.2 1.1 1 0.9 0.8 0.7 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90
1.25
1.00
0.75
0.50 RATE OF RISE OF VOLTAGE (V/s)
AMBIENT TEMPERATURE (oC)
FIGURE 5. NORMALIZED VBO vs dv/dt FOR ALL TYPES
FIGURE 6. NORMALIZED HOLDING CURRENT vs TEMPERATURE FOR ALL TYPES
7-13
SGT23B13, SGT27B13, SGT27B27 Mechanical Dimensions
ACTIVE ELEMENT
TO-202 Modified
2 LEAD JEDEC STYLE TO-202 SHORT TAB PLASTIC PACKAGE INCHES MILLIMETERS MIN 3.31 0.61 1.15 6.86 0.46 8.13 8.64 2.04 1.00 10.42 2.04 MAX 3.81 0.71 1.39 7.11 0.55 8.63 9.14 2.54 1.24 11.17 2.54 NOTES 2, 3 1, 2, 3 1, 2, 3 4 5 1
A
b2
H1 D
SYMBOL A b b1 b2 c D
MIN 0.130 0.024 0.045 0.270 0.018 0.320 0.340 0.080 0.039 0.410 0.080
MAX 0.150 0.028 0.055 0.280 0.022 0.340 0.360 0.100 0.049 0.440 0.100
L1
b1
E e1 H1 c J1 L L1
J1
0.200 BSC
5.08 BSC
L
b
1
2
e1
45o
E
NOTES: 1. Lead dimension and finish uncontrolled in L1. 2. Lead dimension (without solder). 3. Add typically 0.002 inches (0.05mm) for solder coating. 4. Position of lead to be measured 0.250 inches (6.35mm) from bottom of dimension D. 5. Position of lead to be measured 0.100 inches (2.54mm) from bottom of dimension D. 6. Controlling dimension: Inch. 7. Revision 3 dated 10-94.
Ordering Information
SGT 27 B 27
Holding Current in mA divided by 10 Type of Surgector U: Unidirectional B: Bidirectional S: SCR
Off-State Voltage Rating Divided by 10 Surgector
Terms and Symbols
VDM (Maximum Off-State Voltage) - Maximum off-state voltage (DC or peak) which may be applied continuously. VRM (Maximum Reverse Voltage) - Maximum reverseblocking voltage (DC or peak) which may be applied. ITSM (Maximum Peak Surge Current) - Maximum nonrepetitive current which may be allowed to flow for the time state. TA (Ambient Operating Temperature) - Ambient temperature range permitted during operation in a circuit. TSTG (Storage Temperature) - Temperature range permitted during storage. IDM (Off-State Current) - Maximum value of off-state current that results from the application of the maximum off-state voltage (VDM). IRM (Reverse Current) - Maximum value of reverse current that results from the application of the maximum reverse voltage (VRM). VZ (Clamping Voltage) - Off-state voltage at a specified current. VBO (Breakdown Voltage) - Voltage at which the device switches from the off-state to the on-state. IH (Holding Current) - Minimum on-state current that will hold the device in the on-state after it has been latched on. VT (On-State Voltage) - Voltage across the main terminals for a specified on-state current. CO (Main Terminal Capacitance) - Capacitance between the main terminals at a specified off-state voltage.
7-14

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