1.5SMC6.8A THRU 1.5SMC540A 6.8V-540V 1500W Surface Mount Automotive Transient Voltage Suppressors FEATURES • Low profile package with built-in strain relief for surface mounted applications • Glass passivated junction • Low incremental surge resistance • Low inductance • Excellent clamping capability • 1500W peak pulse power capability with a 10/1000µs waveform, repetition rate (duty cycle): 0.01% • Very fast response time • Plastic package has Underwriters Laboratory Flammability Classification 94V-0 MECHANICAL DATA Case: JEDEC DO-214AB (SMC) molded plastic over passivated junction Terminals: Solder plated, solderable per MIL-STD-750, Method 2026. High temperature soldering: 250°C/10 seconds at terminals. Polarity: For uni-directional types the band denotes the cathode, which is positive with respect to the anode under normal TVS operation. Standard Packaging: 16mm tape (EIA STD RS-481) Weight: 0.007 oz., 0.21 g Packaging Codes – Options (Antistatic): 51 – 1K per Bulk box, 10K/carton 57 – 850 per 7" plastic Reel (16mm tape), 8.5K/carton 9A – 3.5K per 13" plastic Reel (16mm tape), 35K/carton MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS Parameter Symbol Value Unit PPPM 1500 W IPPM See Next Table A PM(AV) 6.5 W Peak forward surge current 8.3ms single half sine-wave uni-directional only (2) IFSM 200 A Thermal resistance junction to ambient air (3) RθJA 75 °C/W Thermal resistance junction to leads RθJL 15 °C/W TJ, TSTG –65 to +150 °C Peak power dissipation with a 10/1000µs waveform(1)(2)(Fig. 1) (1) Peak pulse current with a 10/1000µs waveform (Fig. 3) Power dissipation on infinite heatsink, TA = 50°C Operating junction and storage temperature range Notes: (1) Non-repetitive current pulse, per Fig.3 and derated above TA = 25°C per Fig. 2 (2) Mounted on 0.31 x 0.31” (8.0 x 8.0mm) copper pads to each terminal (3) Mounted on minimum recommended pad layout E-mail: [email protected] 1 of 3 Web Site: www.taychipst.com E-mail: [email protected] 2 of 3 Web Site: www.taychipst.com 1.5SMC6.8A THRU 1.5SMC540A 6.8V-540V 1500W Surface Mount Automotive Transient Voltage Suppressors RATINGS AND CHARACTERISTIC CURVES 1.5SMC6.8A 100 Peak Pulse Power (PPP) or Current (IPP) Derating in Percentage, % PPPM — Peak Pulse Power (kW) 10 1 0.31 x 0.31" (8.0 x 8.0mm) Copper Pad Areas 75 50 25 0 0.1 0.1µs 1.0µs 10µs 100µs 1.0ms 10ms 0 25 50 75 100 175 Fig. 3 – Pulse Waveform Fig. 4 – Typical Junction Capacitance Uni-Directional TJ = 25°C Pulse Width (td) is defined as the point where the peak current decays to 50% of IPPM Peak Value IPPM Half Value — IPP 2 IPPM 50 10/1000µsec. Waveform as defined by R.E.A. 1,000 VR, Measured at Stand-Off Voltage, VWM 100 Uni-Directional Bi-Directional TJ = 25°C f = 1.0MHz Vsig = 50mVp-p td 1.0 0 3.0 2.0 200 Measured at Zero Bias 10,000 CJ — Junction Capacitance (pF) tr = 10µsec. 0 150 TA — Ambient Temperature (°C) 20,000 100 125 td — Pulse Width (sec.) 150 IPPM — Peak Pulse Current, % IRSM 1.5SMC540A Fig. 2 – Pulse Derating Curve Fig. 1 – Peak Pulse Power Rating Curve 100 10 4.0 1 10 100 400 VWM — Reverse Stand-Off Voltage (V) t — Time (ms) Fig. 6 - Maximum Non-Repetitive Forward Surge Current Uni-Directional Use Only Fig. 5 – Typical Transient Thermal Impedance 100 200 Peak Forward Surge Current, Amperes Transient Thermal Impedance (°C/W) THRU 100 10 1.0 0.1 0.001 8.3ms Single Half Sine-Wave (JEDEC Method) TJ = TJ max. 10 0.01 0.1 1 10 100 1000 1 E-mail: [email protected] 10 100 Number of Cycles at 60Hz tp — Pulse Duration (sec) 3 of 3 Web Site: www.taychipst.com