View stuk06i stuk5g4 series datasheet:

TH97/10561QM TW00/17276EM IATF 0060636 SGS TH07/1033 SURFACE MOUNT TRANSIENT STUK06I - STUK5G4 VOLTAGE SUPPRESSOR SMC (DO-214AB) VBR : 6.8 - 440 Volts PPK : 1500 Watts 0.060(1.52) 0.030(0.76) FEATURES : 0.008(0.203) * 1500W surge capability at 1ms 0.004(0.102) * Excellent clamping capability * Low zener impedance 0.121(3.07) * Fast response time : typically less 0.012(0.305) 0.115(2.92) then 1.0 ps from 0 volt to VBR(min.) 0.006(0.152) 0.103(2.62) 0.245(6.22) * Typical IR less then 1µA above 10V 0.220(5.59) 0.079(2.00) * Pb / RoHS Free MECHANICAL DATA * Case : SMC Molded plastic Dimensions in inches and (millimeter) * Epoxy : UL94V-O rate flame retardant * Lead : Lead Formed for Surface Mount PAD LAYOUT Inc. mm. * Polarity : Color band denotes cathode