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| NEW PRODUCT NEW PRODUCT NEW PRODUCT SM6T SERIES TRANSZORBTM SURFACE MOUNT TRANSIENT VOLTAGE SUPPRESSOR Breakdown Voltage - 6.8 to 220 Volts Peak Pulse Power - 600 Watts FEATURES DO-214AA 0.086 (2.20) 0.077 (1.95) 0.155 (3.94) 0.130 (3.30) 0.180 (4.57) 0.160 (4.06) 0.012 (0.305) 0.006 (0.152) 0.096 (2.44) 0.084 (2.13) For surface mounted applications in order to optimize board space Low profile package Built-in strain relief Glass passivated junction Low inductance Excellent clamping capability Repetition Rate (duty cycle): 0.01% Fast reponse time: typically less than 1ps from 0 volts to VBR min. Typical ID less than 1A above 10V High temperature soldering: 250C/10 seconds at terminals Plastic package has Underwriters Laboratory Flammability Classification 94V-O MECHANICAL DATA 0.060 (1.52) 0.030 (0.76) 0.220 (5.59) 0.205 (5.21) 0.008 (0.203) MAX. Dimensions in inches and (millimeters) Case: JEDEC DO-214AA (SMB) molded plastic over passivated junction Terminals: Solder plated solderable per MIL-STD-750, Method 2026 Polarity: For uni-directional types: Color band denotes positive end (cathode) Standard Packaging: 12mm tape (EIA STD RS-481) Weight: 0.003 ounces, 0.093 gram MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS Ratings at 25C ambient temperature unless otherwise specified SYMBOLS VALUE UNIT Peak Pulse Power Dissipation on 10/1000s waveform (NOTES 1, 2, Fig. 1) Peak Pulse Current on 10/1000s waveform (NOTE 1, Fig. 3) Power Dissipation on Infinite Heatsink, TA=50C Peak Forward Surge Current, 10ms Single Half Sine-wave, Undirectional Only Max. Junction Temperature Storage Temperature Range Thermal Resistance Junction to Ambient Air (NOTE 2) Thermal Resistance Junction to Leads PPPM IPPM PM(AV) IFSM TJ TSTG RJA RJL Minimum 600 See Table 1 5.0 100 150 -65 to +175 100 20 Watts Amps Watts Amps C C C/W C/W NOTES (1) Non-repetitive current pulse, per Fig. 3 and derated above TA=25C per Fig. 2 (2) Mounted on 5.0mm 2 (.013mm thick) land areas. (3) Measured on 8.3ms single half sine-wave or equivalent squarewave, duty cycle 4 pulses per minute maximum. 1/21/99 ELECTRICAL CHARACTERISTICS RATINGS at (TA=25C unless otherwise noted) Device Marking Code Standoff Leakage Voltage Current(3) VRM IRM @ VRM Uni SM6T6V8A SM6T7V5A SM6T10A SM6T12A SM6T15A SM6T18A SM6T22A SM6T24A SM6T27A SM6T30A SM6T33A SM6T36A SM6T39A SM6T68A SM6T100A SM6T150A SM6T200A SM6T220A KE7 KK7 KT7 KX7 LG7 LM7 LT7 LV7 LX7 ME7 MG7 MK7 MM7 NG7 NV7 PK7 PR7 PR8 Bi KE7 AK7 AT7 AX7 LG7 BM7 BT7 LV7 BX7 CE7 MG7 CK7 CM7 NG7 NV7 PK7 PR7 PR8 (Volts) 5.80 6.40 8.55 10.2 12.8 15.3 18.8 20.5 23.1 25.6 28.2 30.8 33.3 58.1 85.5 128 171 188 (A) 1000 500 10.0 5.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Breakdown Voltage VBR @ IT(2) (Volts) Min 6.45 7.13 9.50 11.4 14.3 17.1 20.9 22.8 25.7 28.5 31.4 34.2 37.1 64.6 95.0 143 190 209 Max 7.14 7.88 10.5 12.6 15.8 18.9 23.1 25.2 28.4 31.5 34.7 37.8 41.0 71.4 105 158 210 231 Test Current IT (mA) 10 10 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 Clamping Voltage Clamping Voltage VC @ IPP VC @ IPP 10/1000s 8/20s (Volts) 10.5 11.3 14.5 16.7 21.2 25.2 30.6 33.2 37.5 41.5 45.7 49.9 53.9 92.0 137 207 274 328 (Amps) 57.0 53.0 41.0 36.0 28.0 24 20.0 18.0 16.0 14.5 13.1 12.0 11.1 6.50 4.40 2.90 2.20 2.00 (Volts) 13.4 14.5 18.6 21.7 27.2 32.5 39.3 42.8 48.3 53.5 59.0 64.3 69.7 121 178 265 353 388 (Amps) 298 276 215 184 147 123 102 93 83 75 68 62 57 33 22.5 15 11.3 10.3 5.7 6.1 7.3 7.8 8.4 8.8 9.2 9.4 9.6 9.7 9.8 9.9 10.0 10.4 10.6 10.8 10.8 10.8 T Max 10-4/C Type (1) NOTES: (1) For bi-directional devices add "C" for 10% and "CA" for 5% tolerance of VBR (2) VBR measured after IT applied for 300s square wave pulse (3) For bipolar devices with VR=10 Volts or under, the IT limit is doubled APPLICATION NOTES A 600W (SMB) device is normally selected when the threat of transients is from lightning induced transients, conducted via external leads or I/O lines. It is also used to protect against switching transients induced by large coils or industrial motors. Source impedance at component level in a system is usually high enough to limit the current within the peak pulse current (IPP) rating of this series. In an overstress condition, the failure mode is a short circuit. RECOMMENDED PAD SIZES The pad dimensions should be 0.010" (0.25mm) longer than the contact size, in the lead axis. This allows a solder fillet to form, see figure below. Contact factory for soldering methods. 0.90 (2.28) 0.025 (2.16) 0.070 (1.78) RATINGS AND CHARACTERISTICS CURVES SM6T SERIES FIG. 1 - PEAK PULSE POWER RATING CURVE PPPM, PEAK PULSE POWER, kW NON-REPETITIVE PULSE WAVEFORM SHOWN IN FIG. 3 TA=25C PEAK PULSE POWER (PPP) or CURRENT (IPP) DERATING IN PERCENTAGE, % 100 FIG. 2 - PULSE DERATING CURVE 100 10 75 50 1.0 25 0.2 x 0.2" (0.5 x 0.5mm) COPPER PAD AREAS 0.1 0.1s 1.0s 10s 100s 1.0ms 10ms 0 0 25 50 75 100 125 150 175 200 td, PULSE WIDTH, sec. TA, AMBIENT TEMPERATURE, C FIG. 3 - PULSE WAVEFORM 150 IPPM, PEAK PULSE CURRENT, % tr=10sec. PEAK VALUE IPPM HALF VALUE - IPP 2 PULSE WIDTH (td) is DEFINED as the POINT WHERE the PEAK CURRENT DECAYS to 50% of IPPM FIG. 4 - TYPICAL JUNCTION CAPACITANCE UNIDIRECTIONAL 6,000 TJ=25 C f=1.0 MHZ Vsig=50mVp-p MEASURED at ZERO BIAS 100 CJ, JUNCTION CAPACITANCE, pF 1,000 50 10/1000sec. WAVEFORM as DEFINED by R.E.A. MEASURED at STAND-OFF VOLTAGE, VWM 0 td 0 1.0 2.0 t, TIME, ms 3.0 4.0 100 FIG. 5 - TYPICAL JUNCTION CAPACITANCE BIDIRECTIONAL 6,000 TJ=25 C f=1.0 MHZ Vsig=50mVp-p 10 1 10 100 200 VWM, REVERSE STAND-OFF VOLTAGE, VOLTS CJ, JUNCTION CAPACITANCE, pF 1,000 MEASURED at ZERO BIAS FIG. 6 - MAXIMUM NON-REPETITIVE PEAK FORWARD SURGE CURRENT IFSM, PEAK FORWARD SURGE CURRENT, AMPERES 200 8.3ms SINGLE HALF SINE-WAVE (JEDEC Method) UNIDIRECTIONAL ONLY MEASURED at STAND-OFF VOLTAGE, VWM 100 100 10 1 10 100 200 10 1 10 NUMBER OF CYCLES AT 60 HZ 100 VWM, REVERSE STAND-OFF VOLTAGE, VOLTS |
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