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TISP4070L3BJ, TISP4350L3BJ BIDIRECTIONAL THYRISTOR OVERVOLTAGE PROTECTORS
Copyright (c) 1999, Power Innovations Limited, UK AUGUST 1999 -- REVISED NOVEMBER 1999
FCC PART 68 AND UL 1950 OVERVOLTAGE PROTECTORS
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MODEM Protection against: -- FCC Part 68 Type A & B surge -- UL 1950, Clause 6. power cross -- CSA 22.2 No. 950, Clause 6. power cross Ring-Tip Protection ...............TISP4350L3BJ Electronics Protection ..........TISP4070L3BJ Ion-Implanted Breakdown Region Precise and Stable Voltage Low Voltage Overshoot under Surge
DEVICE `4070 `4350 VDRM V 58 275 V(BO) V 70 350
SMBJ PACKAGE (TOP VIEW)
q q q
R(B) 1
2 T(A)
MDXXBG
device symbol
T
SD4XAA
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Rated for UL 1950 and Part 68 Wave Shapes
SURGE TYPE A B STANDARD FCC Part 68 FCC Part 68 UL 1950 / ITU-T K21 WAVE SHAPE 10/160 s 10/560 s 9/720 s 10/700 s ITSP A 50 30 40
R Terminals T and R correspond to the alternative line designators of A and B
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 prevents d.c. latchup as the diverted current subsides.These protectors are guaranteed to voltage limit and withstand the listed lightning surges in both polarities. After a Type A surge the equipment can be faulty, provided that the fault mode causes the equipment to be unusable. The high current Type A surges (10/160, 200 A and 10/560, 100 A), will cause the TISP4xxxL3BJ to fail short circuit, giving a non-operational equipment pass to Type A surges. After a Type B surge the equipment must be operational. As the TISP4xxxL3BJ has a current rating of 40 A, will survive both Type B surges, metallic (differential mode 25 A, 9/720) and longitudinal (common mode 37.5 A, 9/720), giving an operational pass to Type B surges. For metallic protection, the TISP4350L3BJ is connected between the Ring and Tip conductors. For longitudinal protection two TISP4350L3BJ protectors are used; one between the Ring conductor to ground and the other between the Tip conductor to ground. The B type ringer has voltages of 56.5 V d.c. and up to
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Information is current as of publication date. Products conform to specifications in accordance with the terms of Power Innovations standard warranty. Production processing does not necessarily include testing of all parameters.
TISP4070L3BJ, TISP4350L3BJ BIDIRECTIONAL THYRISTOR OVERVOLTAGE PROTECTORS
AUGUST 1999 -- REVISED NOVEMBER 1999
150 V rms a.c., giving a peak voltage of 269 V. The TISP4350L3BJ will not clip the B type ringing voltage as it has a high impedance up to 275 V. The TISP4070L3BJ should be connected after the hook switch to protect the following electronics. As the TISP4070L3BJ has a high impedance up to 58 V, it will switch off after a surge and not be triggered by the normal exchange battery voltage These low (L) current protection devices are in a plastic package SMBJ (JEDEC DO-214AA with J-bend leads) and supplied in embossed tape reel pack. For alternative voltage and holding current values, consult the factory. For higher rated impulse currents in the SMB package, the 100 A 10/1000 TISP4xxxH3BJ series is available.
absolute maximum ratings, TA = 25 C (unless otherwise noted)
RATING Repetitive peak off-state voltage, Non-repetitive peak on-state pulse current (see Notes 1, and 2) 10/160 s (FCC Part 68, 10/160 s voltage wave shape, Type A) 5/310 s (ITU-T K21, 10/700 s voltage wave shape) 5/320 s (FCC Part 68, 9/720 s voltage wave shape, Type B) 10/560 s (FCC Part 68, 10/560 s voltage wave shape, Type A) Non-repetitive peak on-state current (see Notes 1, 2 and 3) 20 ms (50 Hz) full sine wave 16.7 ms (60 Hz) full sine wave 1000 s 50 Hz/60 Hz a.c. Initial rate of rise of on-state current, Junction temperature Storage temperature range Exponential current ramp, Maximum ramp value < 100 A diT/dt TJ Tstg ITSM 12 13 2 120 -40 to +150 -65 to +150 A/s C C A ITSP 50 40 40 30 A `4070 `4350 SYMBOL VDRM VALUE 58 275 UNIT V
NOTES: 1. Initially the TISP4xxxL3BJ must be in thermal equilibrium with TJ = 25 C. 2. The surge may be repeated after the TISP4xxxL3BJ returns to its initial conditions. 3. EIA/JESD51-2 environment and EIA/JESD51-3 PCB with standard footprint dimensions connected with 5 A rated printed wiring track widths. Derate current values at -0.61 %/C for ambient temperatures above 25 C
overload ratings, TA = 25 C (unless otherwise noted)
RATING Peak overload on-state current, Type A impulse (see Note 4) 10/160 s 10/560 s Peak overload on-state current, a.c. power cross tests UL 1950 (see Note 4) IT(OV)M 300 150 See Figure 2 IT(OV)M for current versus time NOTE 4: These electrical stress levels may damage the TIS4xxxL3BJ silicon chip. After test, the pass criterion is either that the device is functional or, if it is faulty, that it has a short circuit fault mode. In the short circuit fault mode, the following equipment is protected as the device is a permanent short across the line. The equipment would be unprotected if an open circuit fault mode developed. A A SYMBOL VALUE UNIT
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TISP4070L3BJ, TISP4350L3BJ BIDIRECTIONAL THYRISTOR OVERVOLTAGE PROTECTORS
AUGUST 1999 -- REVISED NOVEMBER 1999
electrical characteristics for the T and R terminals, TA = 25 C (unless otherwise noted)
PARAMETER IDRM V(BO) Repetitive peak offstate current Breakover voltage VD = VDRM dv/dt = 250 V/ms, RSOURCE = 300 TEST CONDITIONS TA = 25 C TA = 85 C `4070 `4350 `4070 `4350 40 120 5 TA = 85 C Vd = 1 V rms, VD = 0 VD = 1 V Coff Off-state capacitance VD = 5 V f = 100 kHz, Vd = 1 V rms, VD = 0 VD = 1 V VD = 5 V `4350 `4070 40 38 31 26 24 20 10 50 48 39 33 30 25 pF MIN TYP MAX 5 10 70 350 78 359 250 3 350 UNIT A V
dv/dt 1000 V/s, Linear voltage ramp, V(BO) Impulse breakover voltage Breakover current On-state voltage Holding current Critical rate of rise of off-state voltage Off-state current Maximum ramp value = 500 V di/dt = 20 A/s, Linear current ramp, Maximum ramp value = 10 A I(BO) VT IH dv/dt ID dv/dt = 250 V/ms, RSOURCE = 300 mA V mA kV/s A IT = 5 A, tW = 100 s IT = 5 A, di/dt = +/-30 mA/ms Linear voltage ramp, Maximum ramp value < 0.85VDRM VD = 50 V f = 100 kHz, V
thermal characteristics
PARAMETER TEST CONDITIONS EIA/JESD51-3 PCB, IT = ITSM(1000), RJA Junction to free air thermal resistance TA = 25 C, (see Note 5) 265 mm x 210 mm populated line card, 4-layer PCB, IT = ITSM(1000), TA = 25 C NOTE 52 MIN TYP MAX 115 C/W UNIT
5: EIA/JESD51-2 environment and PCB has standard footprint dimensions connected with 5 A rated printed wiring track widths.
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TISP4070L3BJ, TISP4350L3BJ BIDIRECTIONAL THYRISTOR OVERVOLTAGE PROTECTORS
AUGUST 1999 -- REVISED NOVEMBER 1999
PARAMETER MEASUREMENT INFORMATION
+i ITSP Quadrant I Switching Characteristic
ITSM IT VT IH
V(BO)
I(BO)
-v IDRM
VDRM
VD
ID ID VD VDRM
IDRM +v
I(BO)
IH
V(BO)
VT IT ITSM
Quadrant III Switching Characteristic ITSP -i
PMXXAAB
Figure 1. VOLTAGE-CURRENT CHARACTERISTIC FOR T AND R TERMINALS ALL MEASUREMENTS ARE REFERENCED TO THE R TERMINAL
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TISP4070L3BJ, TISP4350L3BJ BIDIRECTIONAL THYRISTOR OVERVOLTAGE PROTECTORS
AUGUST 1999 -- REVISED NOVEMBER 1999
THERMAL INFORMATION
PEAK OVERLOAD ON-STATE CURRENT vs CURRENT DURATION TI4LAA
IT(OV)M -- Peak Overload On-State Current -- A rms 40 35 30 25 20 15 7A 10 9 8 7 6 5 4 3.5 3 2.5 2 0*01 0*1 WIRING SIMULATOR 2.2 A TISP4xxxL3BJ WILL CARRY CURRENT OF TESTS 1 THRU 5 CLAUSE 6.6, UL 1950, FOR FULL TEST TIME
40 A
100 A2s
1 10 100 t - Current Duration - s
1000
Figure 2. PEAK OVERLOAD ON-STATE CURRENT AGAINST DURATION
APPLICATIONS INFORMATION UL 1950, CSA C22.2 No. 950 and EN 60950
These electrical safety standards for IT (Information Technology) equipment at the customer premise use the IEC (International Electro-technical Commission) 60950 standard as the core document. The IEC 60950 covers fundamental safety criteria such as creepage and isolation. The connection to a telecommunication network voltage (TNV) is covered in clause 6. Europe is harmonised by CENELEC (Comite Europeen de Normalization Electro-technique) under EN 60950 (included in the Low Voltage Directive, CE mark). US has UL (Underwriters Laboratories) 1950 and Canada CSA (Canadian Standards Authority) C22.2 No. 950. The US and Canadian standards include regional changes and additions to the IEC 60950. A major addition is the inclusion of clause 6.6, power cross withstand and annex NAC covering testing. Remarks made for UL 1950 will generally be true for CSA 22.2 No. 950.
UL 1950, clause 6.6 -- power cross
Figure 3 shows the criterion flow for UL 1950 power cross. (This is a modified version of UL1950, Figure 18b -- Overvoltage flowchart) There are many routes for achieving a pass result. For discussion, each criterion has been given a letter reference. Brief details of any electrical testing is given as a criterion note. Test pass criteria are given in the bottom table of Figure 3.
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TISP4070L3BJ, TISP4350L3BJ BIDIRECTIONAL THYRISTOR OVERVOLTAGE PROTECTORS
AUGUST 1999 -- REVISED NOVEMBER 1999
IT Equipm ent param eters
UL 1950 T hird E dition T elecommunication network connection
C lau se 6.6 -- Protection again st overvo ltag e fro m p ow er lin e cro sses F ig ure 18b -- O vervo ltag e flo w ch art An nex N AC (no rm ative) -- Po w er lin e cro sses
A
No
Test 1. 600 V, 40 A, 1.5 s
C onnects to outside cable
No overvoltage testing
Yes
Has 100 A 2 s @ 600 V )
B
No
H as m in. 26 A W G supplied cord
E
No
P ass Test 1
I
No
Test 5. 120 V, 25 A, 30 min or open circuit
Yes
Yes Yes
Has 1.3 A d.c. lim iting )
C
No
P ass 6.3.3 ground/line separation )
F
No
P ass test 5
J
No Fail
Yes
Test 2. ) 600 V, 7 A, 5 s Test 3. # ) 600 V, 2.2 A, 30 min or open circuit (3A) Test 3A. # ) 600 V, < 2.2 A, 30 min, no open circuit Test 4. # ) < Limiting voltage, < 2.2 A, 30 min, no open circuit, no overvoltage protector voltage limiting
Yes
Yes
H as fire enclosure and spacings
G
Yes
No
No
H as fire enclosure
D
No
P ass test 2 pass tests 3, 4
H
Yes Pass
Yes NOTES ) Overcurrent protector I2t must must be lower than any other equipment element which carries the same current. ) UL accepts that a fuse with a 1 A or less rating meets the 1.3 A criterion. ) Pass for 120 V a.c. between telecommunication line and ground current < 10 mA. ) Test 2 not required if the equipment d.c. breaking is 1.3 A or less, see comment ). # ) Tests 3 and 4 not required for equipment with less than 1000 m of outside cable.
August 1999 V2.3
Pass criteria No cheesecloth charring Insulation OK wiring sim ulator (fuse) OK I 2 t < 100 A 2 s @ 600 V a.c.
T est 1
T est 2
T est 3
T est 3A
T est 4
T est 5
Figure 3. UL 1950 POWER CROSS FLOW CHART
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Users must verify requirements against latest issue of UL 1950
TISP4070L3BJ, TISP4350L3BJ BIDIRECTIONAL THYRISTOR OVERVOLTAGE PROTECTORS
AUGUST 1999 -- REVISED NOVEMBER 1999
power cross pass routes
This discussion covers typical modem flows.
FLOW COMMENT
box A
A
Y
N
No tests
The criterion for box A is if the modem connects to an outside TNV line. The majority of modems will be connected to an outside line, so the answer is yes. The yes path goes to box B.
B
box B
A
Y
B
Y
N
E
C
The criterion for box B is if the equipment has a limit of 100 A2s at 600 V rms for Test 1. Many interpret this as a fuse with I2t 100 A2s and often miss the 600 V a.c. breaking requirement. However, the current loop is completed by the fuse and other equipment components. To ensure that the fuse I2t sets the equipment performance, the other current loop components, such as the printed wiring (PW), must have a higher I2t values than the fuse. Certainly the fuse I2t needs to be lower than 100 A2s but other components, for example IC packaging, may impose a hazard-free limit of 10 A 2s. (This conflicts with FCC Part 68 Type A surge pass requirement of 8 A2s.) A yes leads to box C and a no to box E.
boxes E and I
E
Y
N
I
Y
N
The criterion for box E is for a minimum telecommunications line cord of No. 26 AWG to be supplied or specified.
Fail
F
A yes leads to box F and a no to box I. The criterion for box I is to pass Test 1. If all the four pass criteria of Test 1 are met, this is a yes and the flow goes to box F. A no result fails the equipment.
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TISP4070L3BJ, TISP4350L3BJ BIDIRECTIONAL THYRISTOR OVERVOLTAGE PROTECTORS
AUGUST 1999 -- REVISED NOVEMBER 1999 FLOW COMMENT
boxes C and D
A
Y
B
Y
The criterion for box C is overcurrent protection that reduces currents above 1.3 A. This requirement is met by a 1 A fuse (a 1 A current fusing rating, not an IEC 1 A current carrying rating). Modems which pass FCC Part 68 Type B surges and nonoperationally pass Type A surges can use a fuse of 1 A or less, so the yes path to box D can be followed. High performance modems which operationally pass both Type A and B surges would need a fuse of greater than 1 A and so follow the no path to box F. The criterion for box D is a fire enclosure.
Pass
C
Y
N
F
D
Y
N
H
Few modems can afford fire enclosures. However, for an internal modem in a known computer case, the case may be evaluated as a fire enclosure. A successful case evaluation will give a yes and an equipment pass. More likely the modem will not have a fire enclosure. The no flow goes to box H.
boxes F and J
F
Y
N
J
Y
N
Fail
The criterion for box F is a pass to clause 6.3.3 requirements. A yes goes to box G and a no goes to box J. The criterion for box J is to pass Test 5. If all the three pass criteria of Test 5 are met, this is a yes and the flow goes to box G. A no result fails the equipment.
G
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TISP4070L3BJ, TISP4350L3BJ BIDIRECTIONAL THYRISTOR OVERVOLTAGE PROTECTORS
AUGUST 1999 -- REVISED NOVEMBER 1999 FLOW COMMENT
boxes G and H
Fail
The criterion for box G is a fire enclosure and spacings (See box D comments). A yes result passes the equipment and a no result leads to box H.
G
N
Y
H
N
Y
Pass
The criterion for box H is to pass Tests 2, 3 and 4. Test 2 is not required if there is overcurrent protection that reduces currents above 1.3 A (See box C). High performance modems, using fuses and without fire enclosures, must pass tests 2, 3, possibly 3A if the fuse opens, and 4. For standard modems, using fuses of 1 A or less and without fire enclosures, tests 3, 3A and 4 must be passed. If the two pass criteria of each of the tests performed are met, this is a yes and the equipment passes. A no result fails the equipment.
fuse values
There are two areas of fuse criteria; surge capability (FCC Part 68 impulse) and power cross capability (UL1950 clause 6.6 and annex NAC). To survive an impulse, a fuse must have a melting I2t rating greater than the impulse I2t. The fuse I2t rating should be specified for the impulse waveshape current as the normal d.c. rating may not result in adiabatic conditions. Alternatively, the fuse may be specified for a rated current under the impulse waveshape conditions. An exponentially decaying impulse with a current amplitude IPP and 50 % amplitude decay time of tD has an I2t value of 0.72IPP2tD. Test waveforms have tolerences and the formula can be approximated to IPP2tD, giving about an 40 % allowance to cover tolerences e.g. +5 % on IPP and +30 % on tD. Using the approximate formula, the I2t values for typical waveforms are shown in the table below.
SPECIFICATION FCC Part 68, Type A FCC Part 68, Type B UL 1950 / ITU-T K21 TELCORDIA (FORMALLY BELLCORE) GR-1089 AMPLITUDE IPP A 200 100 37.5 37.5 500 100 CURRENT WAVESHAPE tR/tD (s) 10/160 10/560 5/320 5/310 2/10 10/1000 MELTING I2t A2s 6.4 5.6 0.45 0.45 2.5 10
Fuse power cross current capability can be determined from it's time-current curve. The fuse must be rated to break the current at the applied power cross a.c. voltage level.
fuse values for FCC Part 68
Fuses must not blow on the Type B surge. To survive a 37.5 A Type B surge, the fuse needs to have an I2t of greater than 0.45 A2s. Fuses, such as the 1 A surface mount SMTelecomTM 0436001.PR or the 0.5 A axial lead 2AG Surge Withstand 230.500 (both from the Littelfuse) will meet this criteria.
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TISP4070L3BJ, TISP4350L3BJ BIDIRECTIONAL THYRISTOR OVERVOLTAGE PROTECTORS
AUGUST 1999 -- REVISED NOVEMBER 1999
To survive the Type A surges a fuse I2t value of 6.4 A2s is needed. Fuses, such as the 1.6 A 043601.6PR will meet this criteria.
fuse values for UL 1950
Fuses for the UL 1950 power cross need to break the specified currents at 600 V a.c. - ordinary fuses will not do! Fuse specification terms like short circuit capabilities to UL 1459 and UL 1950, 40 A, 7 A and 2.2 A at 600 V a.c. ensure that the 600 V breaking is met. The requirement of Figure 3, box B, limits the fuse I2t to less than 100 A2s. Box C, with its 1.3 A limit gives a flow division. Modems passing the FCC Part 68 Type A surge in a nonoperational mode, could use a 1 A fuse and satisfy the 1.3 A limit and move to box D. Modems operationally passing the Type A surge will tend to use a 1.6 A fuse a fuse and move to box F. Fuses with ratings of 2 A and above may not operate before the wiring simulator fails.
TISP4xxxL3BJ and UL 1950 power cross
The TISP4xxxL3BJ conducts current for periods greater than the power cross test times, Figure 2, so the TISP4xxxL3BJ is not a major factor in UL 1950 compliance. The main design task for UL 1950 power cross is about enclosure design and the selection of the other components that are subject to power cross. A UL specified fuse together with a TISP4xxxL3BJ gives a simple design approach to meeting the power cross requirements.
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TISP4070L3BJ, TISP4350L3BJ BIDIRECTIONAL THYRISTOR OVERVOLTAGE PROTECTORS
AUGUST 1999 -- REVISED NOVEMBER 1999
MECHANICAL DATA SMBJ (DO-214AA) plastic surface mount diode package
This surface mount package consists of a circuit mounted on a lead frame and encapsulated within a plastic compound. The compound will withstand soldering temperature with no deformation, and circuit performance characteristics will remain stable when operated in high humidity conditions. Leads require no additional cleaning or processing when used in soldered assembly.
SMB 4,57 4,06
3,94 3,30
2
Index Mark (if needed)
2,40 2,00
1,52 0,76
2,10 1,90 5,59 5,21
0,20 0,10
2,32 1,96
ALL LINEAR DIMENSIONS IN MILLIMETERS
MDXXBHA
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TISP4070L3BJ, TISP4350L3BJ BIDIRECTIONAL THYRISTOR OVERVOLTAGE PROTECTORS
AUGUST 1999 -- REVISED NOVEMBER 1999
MECHANICAL DATA recommended printed wiring footprint.
SMB Pad Size 2.54
2.40
2.16 ALL LINEAR DIMENSIONS IN MILLIMETERS
MDXXBI
device symbolization code
Devices will be coded as below. As the device parameters are symmetrical, terminal 1 is not identified.
PRODUCTION DEVICE TISP4070L3BJ TISP4350L3BJ SYMBOLIZATION CODE 4070L3 4350L3 DEVELOPMENT SYMBOLIZATION CODE TX4070 TX4350
carrier information
Devices are shipped in one of the carriers below. Unless a specific method of shipment is specified by the customer, devices will be shipped in the most practical carrier. For production quantities the carrier will be embossed tape reel pack. Evaluation quantities may be shipped in bulk pack or embossed tape.
AVAILABLE OPTIONS PACKAGE TYPE SMBJ (DO-214AA) CARRIER BULK PACK TISP4xxxL3BJ TAPE AND REEL TISP4xxxL3BJR
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TISP4070L3BJ, TISP4350L3BJ BIDIRECTIONAL THYRISTOR OVERVOLTAGE PROTECTORS
AUGUST 1999 -- REVISED NOVEMBER 1999
MECHANICAL DATA tape dimensions
SMB Package Single-Sprocket Tape
4,10 3,90 2,05 1,95
1,65 1,55 1,85 1,65 0,40 MAX.
5,55 5,45
12,30 11,70
8,20 MAX.
8,10 7,90 Direction of Feed
o 1,5 MIN. Carrier Tape Embossment 20
0 MIN.
Cover Tape 4,5 MAX.
Maximium component rotation
Index Mark (if needed)
Typical component cavity centre line Typical component centre line
ALL LINEAR DIMENSIONS IN MILLIMETERS NOTES: A. The clearance between the component and the cavity must be within 0,05 mm MIN. to 0,65 mm MAX. so that the component cannot rotate more than 20 within the determined cavity. B. Taped devices are supplied on a reel of the following dimensions:Reel diameter: 330 3,0 mm Reel hub diameter 75 mm MIN. Reel axial hole: 13,0 0,5 mm C. 3000 devices are on a reel. MDXXBJ
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TISP4070L3BJ, TISP4350L3BJ BIDIRECTIONAL THYRISTOR OVERVOLTAGE PROTECTORS
AUGUST 1999 -- REVISED NOVEMBER 1999
IMPORTANT NOTICE
Power Innovations Limited (PI) reserves the right to make changes to its products or to discontinue any semiconductor product or service without notice, and advises its customers to verify, before placing orders, that the information being relied on is current. PI warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with PI's standard warranty. Testing and other quality control techniques are utilized to the extent PI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily performed, except those mandated by government requirements. PI assumes no liability for applications assistance, customer product design, software performance, or infringement of patents or services described herein. Nor is any license, either express or implied, granted under any patent right, copyright, design right, or other intellectual property right of PI covering or relating to any combination, machine, or process in which such semiconductor products or services might be or are used. PI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, INTENDED, AUTHORISED, OR WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT APPLICATIONS, DEVICES OR SYSTEMS.
Copyright (c) 1999, Power Innovations Limited
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