Communication BUS Varistor GENERAL DESCRIPTION The CAN BUS and FlexRay varistor is a zinc oxide (ZnO) based ceramic semiconductor device with non-linear voltage-current characteristics (bi-directional) similar to back-to-back Zener diodes and an EMC capacitor in parallel (see equivalent circuit model). They have the added advantage of greater current and energy handling capabilities as well as EMI/RFI attenuation. Devices are fabricated by a ceramic sintering process that yields a structure of conductive ZnO grains surrounded by electrically insulating barriers, creating varistor like behavior. AVX Communication Bus Varistors offer the advantages of large in-rush current capability, low capacitance to minimize signal distortion, fast turn on time to conservatively clamp the energy before its maximum and off state EMI filtering through their bulk capacitance. These features coupled with an extremely low FIT rate and excellent process capability make an ideal device for today's automotive or general circuit protection. GENERAL CHARACTERISTICS • Operting Teperature: -55°C to +125°C • Working Voltage: ≤18Vdc • Case Size: 0402, 0603 0405 2xArray 0612 4xArray FEATURES APPLICATIONS • Compact footprint • High ESD capability (25kV) • High Inrush Current (8x20μs) • EMI/RFI Attenuation • Low Capacitance/Low Insertion Loss • Very Fast Response Time • High Reliability <0.1 FIT • AEC-Q200 Qualified • Communication Bus: CAN Bus, FlexRay, etc. • General I/O Protocols • Keyboard Interfaces • Datalines • Sensors • Capacitance sensitive applications and more HOW TO ORDER CAN 0001 D Style CAN = CAN BUS FLX = FlexRay Case Size 0001 = 0603 Discrete 0002 = 0405 2-Element 0004 = 0612 4-Element 0005 = 0402 Discrete 0007 = 0603 Discrete P Packaging Code Termination (Reel Size) P = Ni/Sn Alloy D = 7" reel (1,000 pcs.) (Plated) R = 7" reel (4,000 pcs.) T = 13" reel (10,000 pcs.) W = 7" reel (10,000 pcs.) 0402 only PERFORMANCE CHARACTERISTICS AVX PN VW (DC) VW (AC) VB VC IVC IL ET IP Cap Freq VJump PDiss Max Case Elements CAN0001 _ _ ≤ 18 ≤ 14 120 225 1 2 0.015 4 22 Max M 27.5 0.003 0603 1 CAN0002 _ _ ≤ 18 ≤ 14 70 145 1 2 0.015 4 22 Max M 27.5 0.003 0405 2 CAN0004 _ _ ≤ 18 ≤ 14 100 180 1 2 0.015 4 22 Max M 27.5 0.003 0612 4 1 CAN0005 _ _ ≤ 18 ≤ 14 33 55 1 2 0.05 10 37 Max M 27.5 0.01 0402 CAN0007 _ _ ≤ 32.0 ≤ 25.0 61 120 1 5 0.05 5 15 Max K 27.5 0.003 0603 1 FLX0005 _ _ ≤ 18 ≤ 14 26 45 1 5 0.02 4 17 Max M 27.5 0.004 0402 1 Termination Finish Code Packaging Code VW (DC) VW (AC) VB VC IVC 78 DC Working Voltage (V) AC Working Voltage (V) Typical Breakdown Voltage (V @ 1mADC ) Clamping Voltage (V @ IVC) Test Current for VC (A, 8x20μS) IL ET IP Cap Temp Range Maximum Leakage Current at the Working Voltage (μA) Transient Energy Rating (J, 10x1000μS) Peak Current Rating (A, 8x20μS) Maximum Capacitance (pF) @ 1 MHz and 0.5Vrms -55ºC to +125ºC Communication BUS Varistor 10.0 5 0.0 0 Insertion Loss (dB) -10.0 -20.0 -30.0 -40.0 -5 -10 -15 -20 -25 -50.0 1 0 10 100 1000 10000 Frequency (MHz) CAN0001 CAN0005 MultiLayer Varistors (MLVs) 1 FLX0005 100 1000 10000 CAN0007 TYPICAL PULSE RATING CURVE TVS Diodes BUS 10 Frequency (MHz) TYPICAL MLV IMPLEMENTATION XCVR -30 0.1 BUS XCVR EMC CAP MLV PROTECTION METHOD SINGLE COMPONENT SOLUTION DIODE PROTECTION METHOD THREE COMPONENT SOLUTION TVS & EMI TVS + EMI Typical Pulse Rating Curve 10000 Peak Power (W) Insertion Loss (dB) S21 CHARACTERISTICS 1000 100 10 10 100 1000 10000 Pulse Duration (μS) EQUIVALENT CIRCUIT MODEL Discrete MLV Model To Device Requiring Protection PCB Trace LP RV C RP Where: Rv Rp = ≥ C = Ron = = Lp Voltage Variable resistance (per VI curve) 1012 Ω defined by voltage rating and energy level turn on resistance parallel body inductance Ron Solder Pad 79 Communication BUS Varistor TYPICAL CAN BUS IMPLEMENTATION SCHEME TYPICAL FLEX RAY IMPLEMENTATION SCHEME V CC V CC TxD BP CAN_H ECU Split Vcc RxD TX BM CAN_L V1 D Transceiver V1 V2 V2 PHYSICAL DIMENSIONS Length Width Thickness Term Band Width mm (inches) 0402 Discrete 0603 Discrete 0405 Array 0612 Array 1.00 ±0.10 (0.040 ±0.004) 0.50 ±0.10 (0.020 ±0.004) 0.60 Max. (0.024 Max.) 0.25 ±0.15 (0.010 ±0.006) 1.60 ±0.15 (0.063 ±0.006) 0.80 ±0.15 (0.032 ±0.006) 0.90 Max. (0.035 Max.) 0.35 ±0.15 (0.014 ±0.006) 1.00 ±0.15 (0.039 ±0.006) 1.37 ±0.15 (0.054 ±0.006) 0.66 Max. (0.026 Max.) 0.36 ±0.10 (0.014 ±0.004) 1.60 ±0.20 (0.063 ±0.008) 3.20 ±0.20 (0.126 ±0.008) 1.22 Max. (0.048 Max.) 0.41 ±0.10 (0.016 ±0.010) SOLDER PAD DIMENSIONS mm (inches) 0405 Array 0402/0603 Discrete 0612 Array E E D D A A C B A B B C C A B 0402 Discrete 0603 Discrete 0402, 0603 Discrete 0405 Array 0612 Array 0405 Array 0612 Array 80 A B C 0.61 (0.024) 0.89 (0.035) 0.46 (0.018) 0.89 0.51 (0.020) 0.76 (0.030) 0.74 (0.029) 1.65 1.70 (0.067) 2.54 (0.100) 0.12 (0047) 2.54 D E – – – – 0.38 (0.015) 0.46 0.64 (0.025) 0.76 (0.035) (0.065) (0.100) (0.018) (0.030) Communication BUS Varistor APPLICATION = CAN0001 Lamps LEDS AVX CAN BUS and FlexRay varistors offer significant advantages in general areas of a typical CAN or FlexRay network as shown on the right. Some of the advantages over diodes include: • space savings • higher ESD capability @ 25kV contact • higher in rush current (4A) 8 x 20μS • FIT rate ≤0.1 failures (per billion hours) = Feedthru Cap = MultiGuard = Tantalum Tachometer (Stepper Motor) Gauge Motor Drvr Lamp/ LED Drvr 8V Reg BATT (Stepper Motor) NTC Based 5V Reg CAN BUS Speedometer Temp. Sensor Physical Interface F lL l MCU LCD Module DDC Wheel Node FlexRayTM CAN Wheel Node Powertrain Body Control Module/CAN Gateway X-by-Wire Master Wheel Node Smart Junction Box Instrument Cluster Door Module Dash Board Node HVAC Wheel Node 81