Controlled Capacitance Multilayer Varistor GENERAL DESCRIPTION The Controlled Capacitance TransGuard is an application specific bidirectional transient voltage suppressor developed for use in mixed signal environments. The Controlled Cap MLV has three purposes: 1) reduce emissions from a high speed ASIC, 2) prevent induced E fields from conducting into the IC, and 3) clamp transient voltages By controlling capacitance of the MLV, the center frequency and 20db range for filtering purposes can be targeted. A Controlled Cap MLV can greatly improve overall system EMC performance and reduce system size. HOW TO ORDER VCAC 0603 22 A 470 N R P Varistor Chip Automotive Capacitance Chip Size Working Voltage Energy Rating Capacitance Tolerance Packaging Termination A = 0.1J C = 0.3J N = ±30% M = ±20% R = 4k pcs 22 = 22V 26 = 26V 470 = 47pF 820 = 82pF P = Ni Barrier/ 100% Sn (matte) 0603 AVX Part Number VW (DC) VW (AC) VB VC IL ET IP Cap VCAC060322A470NRP VCAC060326C820MRP 22 26 17 20 32.5±25% 36.0±15% 50 67 10 10 0.1 0.3 30 30 47 82 VW(DC) VW(AC) VB VC DC Working Voltage [V] AC Working Voltage [V] Breakdown Votage [V @ 1mADC] Clamping Votage [V @ 1A] IL ET IP Cap W 0603 Discrete Dimensions T 1.60±0.15 0.80±0.15 0.90 MAX (0.063±0.006) (0.031±0.006) BL L 24 W (0.035 MAX) Case Size 0603 0603 Maximum leakage current at the working voltage [µA] Transient Energy Rating [J, 10x1000µS] Peak Current Rating [A, 8x20µS] Capacitance [pF] @ 1KHz specified and 0.5VRMS T L Cap Tolerance 30% 20% BW N/A mm (inches) BL 0.35±0.15 (0.014±0.006) Controlled Capacitance Multilayer Varistor V-I Curve 80 70 60 Volt (V) 50 40 30 20 10 0 1.E-09 1.E-07 1.E-05 1.E-03 1.E-01 1.E+01 1.E+03 Current (A) VCAC060322A470N VCAC060326C820M S21 0 -5 Insertion Loss (dB) -10 -15 -20 -25 -30 -35 -40 0.1 1 10 100 1000 10000 Frequency (MHz) VCAC060322A470N VCAC060326C820M 25