Features * 1500 watts peak power dissipation * Available in ranges from 6.8V to 200V Description This specification sheet defines a series of Silicon Transient Suppressors used in applications where large voltage transients can permanently damage voltage-sensitive components. TAZ are characterized by their high surge capability, extremely fast response time, and low impedance (Ron). Because of the unpredictable nature of transients and the variation of the impedance with respect to these transients, impedance per se is not specified as a parametric value. However, a minimum voitage at low current conditions (BV) and a maximum clamping voltage (Vc) at a maximum peak pulse current is specified. In addition, a maximum clamping ratio is indicated. In some instances the thermal effect (see VC Clamping Voltage) may be responsible for 50% to 70% of the observed voltage differential when subjected to high-current pulses or severe duty cycles thus making a maximum impedance specification insignificant. Curves depicting clamping voltage vs. various current pulses are available from the factory. Extended power curves vs. pulse time are also available. The TAZ has a peak pulse power rating of 1500 watts for one millisecond and therefore can be used in applications where induced lightning on rural or remote transmission lines presents a hazard to electronic circuitry. The response time of TAZ clamping action is theoretically instantaneous (1x10"? sec); therefore, they can protect integrated circuits, MOS device, Hybrids, and other voltage-sensitive semiconductors and components. TAZ can also be used in series or paraltel to increase the peak power ratings. in case of a severe current overload or abnormal transient beyond the maximum ratings, the TAZ will initially fail short thus tripping the systems circuit breaker or fuse while protecting the entire circuit. However, if current is sustained in the shorted mode, the device may exhibit an open condition. If the shorted mode is a desirable design characteristic, we recommend the 1N5629 series of TAZ. Maximum ratings 1500 watts of peak pulse power dissipation at 25C* * tclamping (0 volts to BV min): less than 1 x 10? seconds (theoretical) * Operating and storage temperature 65C to + 175C* Forward surge rating/200 amps, 1/20 second at 25C* Steady state power dissipation: 5.0/W @TL = 25C, 3/8 from body. Lead length = 3/8 Electrical characteristics Clamping Factor: 1.33 @ full rated power 1.20 @ 50% rated power Clamping Factor: The ration of the actual Vc (Clamping Voltage) to the actual BV (Breakdown Voltage) as measured ona specific device. Mechanical characteristics Molded case * Weight: 1.5 grams (approximate) * Positive terminal marked with band 1N6267 thru IN6303A1N6267 thru 1NG303A 174 Electrical Characteristics at 25C Maximum Rated Clamping | Maxi Maxi Max! Stand-off Voitage Reverse | Peak Pulse| Temperature Voltage Breakdown @ pp Leakage | Current Coetticient sepeo (N08 oltage (msec) | @Vrm! (Fig.2) Oyz Type Vam VipR} @ It Vo IR Ipp of ViBR) Number Volts Volts mA Volts HA A iC 1N6267 5.50: 6.12 7.48 10 10.8 1000 139.0 057 1N6267A 5.80: 6.45 7.14 10 10.5 1000 143.0 057 1N6268 6.05 6.75 825 10 11.7 00 128.0 061 1N6268A 6.40 7.13 7,88 10 11.3 500 132.0 061 1N6269 6.63 7.38 9.02 10 12.5 200 120.0 065 1N6269A 7.02 7.79 8.61 10 12.1 200 124.0 065 1N6270 7.37 8.19 10.00 1 13.8 50 109.0 068 1N6270A 7.78 8.65 9.55 1 13.4 50 412.0 .068 1N6271 8.10 9.00 11.00 1 15.0 10 100.0 073 IN6271A 8.55 9.50 10.50 i 14.5 10 103.0 073 1N6272 8.92 9.90 12.10 1 16.2 5 93.0 075 1N6272A 9.40 10.50 11.60 1 15.6 5 96.0 075 1N6273A 9.72 10.80 13.20 1 17.3 5 87.0 .078 1N6273A, 10.20 11.40 12.60 1 16.7 5 90.0 078 1N6274 10.50 11.70 14.30 1 19.0 5 79.0 081 1N6274A 11.10 12.40 13,70 1 18.2 5 82.0 .081 1N6275 12.10 13.50 16.50 1 22.0 5 68.0 084 1N6275A 12.80 14.30 15.80 1 21.2 5 71.0 084 1N6276 12.90 14.40 17.60 1 23.5 5 64.0 .086 1N6276A 13.60 15.20 16.80 1 22.5 5 67.0 086 1N6277 14.50 16.20 19.80 4 26.5 5 56.5 .088 1N6277A 15.30 17.10 18.90 1 25.2 5 59.5 088 1N6278 16.20 18.00 22.00 1 29.1 5 51.5 090 1N6278A 17.10 19.00 21.00 1 27.7 5 54.0 090 1N6279 17.80 19.80 24.20 1 31.9 5 47.0 092 1N62794 18.80 20.90 23.10 1 30.6 5 49.0 092 1N6280 19,40 21.60 26.40 1 34.7 5 43.0 094 1N6280A 20.50 22.80 25.20 1 33.2 5 45.0 094 1N6281 21,80 24.30 29.70 1 39.1 5 38.5 096 1IN6281A 23.10 25.70 28.40 1 37.5 5 40.0 096 1N6282 24.30 27.00 33.00 1 43.5 5 34.5 .097 1N6282A 25.60 28.50 31.50 1 41.4 5 36.0 .097 1N6283 26.80 29.70 36.30 1 47.7 5 31.5 .098 1N6283 28.20 31.40 34.70 1 45.7 5 33.0 098 1N6284 29.10 32,40 39.60 1 52.0 5 29.0 099 1N6284A 30.80 34.20 37.80 1 49.9 5 30.0 .099 4IN6285 31.60 35.10 42.90 1 56.4 5 26.5 -100 1N6285A 33.30 37.10 41.00 1 53.9 5 28.0 -100 1N6286 34.80 38.70 47.30 1 61.9 5 24.0 101 1N6286A 36.80 40.90 45.20 1 59.3 5 25.3 .104 1N6287 38.10 42.30 51.70 1 67.8 5 22.2 1014 1N6287A 40.20 44.70 49.40 1 64.8 5 23.2 -101 1N6288 41.30 45.90 56.10 1 73.5 5 20.4 102 1N6288A 43.60 48.50 53.60 1 70.1 5 21.4 102 IN6289 45.40 50.40 61.60 1 80.5 5 18.6 103 1N6289A 47,80 3.20 58.80 1 77.0 5 19.5 103 1N6290 50.20 55.80 68.20 1 89.0 5 16.9 104 AN6290A, 3.90 58.90 85.10 1 85.0 5 V7 104 1N6291 $5.10 61.20 74.80 1 98.0 5 16.3 104 1N6291A 58.10 64.60 71.40 1 92.0 5 16.3 -104 1N6292 60.70 67.50 82.50 1 108.0 5 13.9 105 1N6292A 64.10 71.30 78.80 1 103.0 5 14.6 105 1N6293 66.40 73.80 90.20 1 118.0 5 12.7 105 1N6293A 70,10 77.90 86.10 1 113.0 5 13.3 +105 4N6294 73.70 81.90 100.00 1 131.0 5 11.4 106 1N6294A, 77,80 86.50 95.50 1 125.0 5 12.0 106 1N629: 81.00 90.00 110.00 1 144.0 5 10.4 .106 1N6295A 85.50 95.00 105.00 1 137.0 5 11.0 106 1N6296 89.20 99.00 421.00 4 168.0 5 9.5 107 1N6296A 94.00 105.00 116.00 1 162.0 5 9.9 107 1N6297 97.20 108.00 1932.00 1 173.0 5 8.7 107 1IN6297A 102.00 | 114.00 - 126.00 1 165.0 5 9.1 107 1N6298 105.00 117. 143.00 1 187.0 5 8.0 107 IN6298A =: 111.00 124.00 137.00 1 179.0 5 8.4 107 1IN6299 121.00 135.00 165.00 1 215.0 5 7.0 108 1N6299A 128.00 143.00 168.00 1 207.0 5 7.2 108 1N63I 130.00 144.00 176.00 1 230.0 5 6.5 108 1N6300A 136.00 152.00 168,00 1 219.0 5 6.8 108 1N6301 138.00 153.00 187.00 1 244.0 5 6.2 108 IN6301A = 145.00 162.00 179.00 1 234.0 5 6.4 108 1N6302 146.00 162,00 198.00 1 258.0 5 5.8 -108 1N63024 154.00 171,00 189.00 1 246.0 5 6.1 108 4IN6303 162.00 180.00 220.00 1 287.0 5 5.2 -108 1N6303A = 171.00 190.00 210.00 1 274.0 5 5.5 .108 Vf at 100 amps peak. MSEC sine wave equals 3.5 volts maximum 10,000 at Zoro Bias 1,000 Measured at 100 C - Capacitance - pica farads 10 1 10 100 BY - Braakdown Voltage - Volts 1,000 FIGURE 2 TYPICAL CAPACITANCE vs, BREAKDOWN VOLTAGE nt SS PARAMETERS ty = 104sec {ty = 1000p sec Poak Value -Ipp | | \ + 4 | TEST WAVEFORM { | ;~ r 1 T T 7 Hall-Value - [pp = ty 2 oa 3 1 Ipp - Pulse Current - %Ipp | 10 x 1000 Waveform 2 as defined by R.E.A. 1 we t | 4 ' Th 2 3 4 5 6 t- Time - msec FIGURE 3 - PULSE WAVE FORM U l fl 1 | I a 4 0 1 CAPACITOR DISCHARGE CIRCUIT FOR TESTING TRANSZOR8S RECOMMENDED PULSE CIRCUITRY c-1471 f mercury? Relay Magnacratt guy WEM ou Ef AC TIME CONSTANTS Ro = 3or 30 ohm, 10 watts C1 =400 F, (600V), 40 uF, (600V) Note 1: A TAZ is normally selected ac- cording to the rated Stand-off Voltage (VRM) which should be equal to or greater than the DC or continuous peak oper- ating voltage level. Note 2: The most significant electrical characteristic of transient suppressors is the surge handling capability. All Trans- zorbs are subjected 100% to the Maximum Peak Pulse Current (Ipp} as indicated in the electrical characteristic table and the clamping voltage is monitored. This test should be part of the customer's quality contro! incoming inspection procedure. Recommended commercial test equip- ment Keytek, Model 424 surge generator/ monitor Keytek Inst. Co.