NEW PRODUCT NEW PRODUCT NEW PRODUCT SM6T SERIES TRANSZORB™ SURFACE MOUNT TRANSIENT VOLTAGE SUPPRESSOR Breakdown Voltage - 6.8 to 220 Volts Peak Pulse Power - 600 Watts FEATURES DO-214AA 0.086 (2.20) 0.155 (3.94) 0.130 (3.30) 0.077 (1.95) 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 1µA above 10V ♦ High temperature soldering: 250°C/10 seconds at terminals ♦ Plastic package has Underwriters Laboratory Flammability Classification 94V-O MECHANICAL DATA 0.008 (0.203) MAX. 0.060 (1.52) 0.030 (0.76) 0.220 (5.59) 0.205 (5.21) 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 25°C ambient temperature unless otherwise specified SYMBOLS VALUE UNIT Peak Pulse Power Dissipation on 10/1000µs waveform (NOTES 1, 2, Fig. 1) PPPM Minimum 600 Watts Peak Pulse Current on 10/1000µs waveform (NOTE 1, Fig. 3) IPPM See Table 1 Amps PM(AV) 5.0 Watts IFSM 100 Amps Max. Junction Temperature TJ 150 °C Storage Temperature Range TSTG -65 to +175 °C Thermal Resistance Junction to Ambient Air (NOTE 2) RΘJA 100 °C/W Thermal Resistance Junction to Leads RΘJL 20 °C/W Power Dissipation on Infinite Heatsink, TA=50°C Peak Forward Surge Current, 10ms Single Half Sine-wave, Undirectional Only NOTES (1) Non-repetitive current pulse, per Fig. 3 and derated above TA=25°C 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=25ºC unless otherwise noted) (1) Type Device Marking Code Standoff Leakage Voltage Current(3) VRM IRM @ VRM Breakdown Voltage VBR @ IT(2) (Volts) Test Current IT Clamping Voltage Clamping Voltage VC @ IPP VC @ IPP 10/1000µs 8/20µs αT Max 10-4/°C Uni Bi (Volts) (µA) Min Max (mA) (Volts) (Amps) (Volts) (Amps) SM6T6V8A KE7 KE7 5.80 1000 6.45 7.14 10 10.5 57.0 13.4 298 5.7 SM6T7V5A KK7 AK7 6.40 500 7.13 7.88 10 11.3 53.0 14.5 276 6.1 SM6T10A KT7 AT7 8.55 10.0 9.50 10.5 1.0 14.5 41.0 18.6 215 7.3 SM6T12A KX7 AX7 10.2 5.00 11.4 12.6 1.0 16.7 36.0 21.7 184 7.8 SM6T15A LG7 LG7 12.8 1.00 14.3 15.8 1.0 21.2 28.0 27.2 147 8.4 SM6T18A LM7 BM7 15.3 1.00 17.1 18.9 1.0 25.2 24 32.5 123 8.8 SM6T22A LT7 BT7 18.8 1.00 20.9 23.1 1.0 30.6 20.0 39.3 102 9.2 SM6T24A LV7 LV7 20.5 1.00 22.8 25.2 1.0 33.2 18.0 42.8 93 9.4 SM6T27A LX7 BX7 23.1 1.00 25.7 28.4 1.0 37.5 16.0 48.3 83 9.6 SM6T30A ME7 CE7 25.6 1.00 28.5 31.5 1.0 41.5 14.5 53.5 75 9.7 SM6T33A MG7 MG7 28.2 1.00 31.4 34.7 1.0 45.7 13.1 59.0 68 9.8 SM6T36A MK7 CK7 30.8 1.00 34.2 37.8 1.0 49.9 12.0 64.3 62 9.9 SM6T39A MM7 CM7 33.3 1.00 37.1 41.0 1.0 53.9 11.1 69.7 57 10.0 SM6T68A NG7 NG7 58.1 1.00 64.6 71.4 1.0 92.0 6.50 121 33 10.4 SM6T100A NV7 NV7 85.5 1.00 95.0 105 1.0 137 4.40 178 22.5 10.6 SM6T150A PK7 PK7 128 1.00 143 158 1.0 207 2.90 265 15 10.8 SM6T200A PR7 PR7 171 1.00 190 210 1.0 274 2.20 353 11.3 10.8 SM6T220A PR8 PR8 188 1.00 209 231 1.0 328 2.00 388 10.3 10.8 NOTES: (1) For bi-directional devices add “C” for ±10% and “CA” for ±5% tolerance of VBR (2) VBR measured after IT applied for 300µs 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 PPPM, PEAK PULSE POWER, kW NON-REPETITIVE PULSE WAVEFORM SHOWN IN FIG. 3 TA=25°C 10 1.0 0.2 x 0.2” (0.5 x 0.5mm) COPPER PAD AREAS 0.1 0.1µs 1.0ms 100µs 10µs 1.0µs 10ms td, PULSE WIDTH, sec. PEAK PULSE POWER (PPP) or CURRENT (IPP) DERATING IN PERCENTAGE, % FIG. 1 - PEAK PULSE POWER RATING CURVE 100 FIG. 2 - PULSE DERATING CURVE 100 75 50 25 0 0 25 50 200 MEASURED at ZERO BIAS 50 10/1000µsec. WAVEFORM as DEFINED by R.E.A. td 3.0 2.0 1.0 175 TJ=25° C f=1.0 MHZ Vsig=50mVp-p HALF VALUE - IPP 2 0 150 6,000 PULSE WIDTH (td) is DEFINED as the POINT WHERE the PEAK CURRENT DECAYS to 50% of IPPM CJ, JUNCTION CAPACITANCE, pF IPPM, PEAK PULSE CURRENT, % 125 PEAK VALUE IPPM 100 0 100 FIG. 4 - TYPICAL JUNCTION CAPACITANCE UNIDIRECTIONAL FIG. 3 - PULSE WAVEFORM 150 tr=10µsec. 75 TA, AMBIENT TEMPERATURE, °C 4.0 t, TIME, ms 1,000 MEASURED at STAND-OFF VOLTAGE, VWM 100 FIG. 5 - TYPICAL JUNCTION CAPACITANCE BIDIRECTIONAL 6,000 10 10 100 200 MEASURED at ZERO BIAS 1,000 FIG. 6 - MAXIMUM NON-REPETITIVE PEAK FORWARD SURGE CURRENT MEASURED at STAND-OFF VOLTAGE, VWM 100 10 1 VWM, REVERSE STAND-OFF VOLTAGE, VOLTS 1 10 100 200 VWM, REVERSE STAND-OFF VOLTAGE, VOLTS IFSM, PEAK FORWARD SURGE CURRENT, AMPERES CJ, JUNCTION CAPACITANCE, pF TJ=25° C f=1.0 MHZ Vsig=50mVp-p 200 8.3ms SINGLE HALF SINE-WAVE (JEDEC Method) UNIDIRECTIONAL ONLY 100 10 1 10 NUMBER OF CYCLES AT 60 HZ 100