LNBTVSx-304 Lightning protection for LNB power supply Features ■ 1 kV, 500 A protection (8/20 µs 1.2/50 µs) ■ SMC package ■ Unidirectional and low VF (VF = 1.2 V at IF = 9 A) ■ Low clamping factor ■ Fast response time A K SMC Description The LNBTVSx-304 is a dedicated lightning and electrical overstress surge protection for LNB voltage regulators in satellite set top box applications. Table 1. Characteristic This device provides lightning protection based on the IEEE C62.41.2 standard. Available in the SMC package, this device is compatible with industry standard mounting processes. April 2008 Device summary Rev 1 LNBTVS4-304S LNBTVS6-304S Lightning surge level (8/20 µs 1.2/50 µs combination wave) 700 V, 350 A 1000 V, 500 A Clamping voltage (max) 45 V @ 333 A 45 V @ 500 A 1/7 www.st.com Characteristics LNBTVSx-304 1 Characteristics Table 2. Absolute maximum ratings (Tamb = 25° C) Symbol Parameter Peak pulse power dissipation (1) Tj initial = Tamb Peak dissipation on infinite heatsink Tamb = 75° C IFSM Non repetitive surge peak forward current for unidirectional types Tp = 10 ms Tj initial = Tamb Tstg Storage temperature range PPP P Value Unit up to 3 kW W 5 W LNBTVS4-304S 250 A LNBTVS6-304S 300 A -65 to + 175 °C Tj Maximum junction temperature 150 °C TL Maximum lead temperature for soldering during 10 s at 5 mm from case 260 °C Value Unit 1. For a surge greater than the maximum values, the diode will fail in short-circuit. Table 3. Thermal resistance Symbol Parameter Rth (j-l) Junction to case 20 ° C/W Rth (j-a) Junction to ambient on printed circuit 75 ° C/W Table 4. Electrical characteristics (Tamb = 25° C) Symbol Parameter I VBR Breakdown voltage IRM Leakage current @ VRM VRM Stand-off voltage VCL Clamping voltage IPP Peak pulse current RI/O Series resistance between Input & Output Cline Input capacitance per line IF Forward current VF Forward voltage Max VF VCL VBR VRM IRM @VRM Type IF IPP PPP 10/1000 µS VBR @ IR Min V IRM IR Typ Max VCL @ Ipp 10/1000 µs VCL @ Ipp 8/20 µs (1) Max Max αT C Max Typ µA V V V V mA W V A V A 10-4/°C pF LNBTVS4-304S 1 28 30 31.5 33 1 2500 45 56 45 333 9.6 4000 LNBTVS6-304S 1 28 30 31.5 33 1 3000 45 67 45 500 9.6 5000 1. IEEE C62.41.2, R = 2 Ω 2/7 LNBTVSx-304 Figure 1. Characteristics Surge test examples at 300 A and 500 A according to IEEE C62.41.2 standard LNBTVS4-304S LNBTVS6-304S LNBTVS6-304S 3/7 Ordering information scheme 2 LNBTVSx-304 Ordering information scheme Figure 2. Ordering information scheme LNB TVS Low noise block regulator Transient voltage suppressor Lightning surge level 4 = 700 V, 350 A (8/20 µs, 1.2/50 µs combination waveform 6 = 1000 V, 500 A (8/20 µs, 1.2/50 µs combination waveform VBR (min) 30 = 30 V VCL (max) 4 = 45 V Package S = SMC 4/7 x - 30 4 S LNBTVSx-304 3 Package information Package information ● Epoxy meets UL 94, V0 In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These packages have a lead-free second level interconnect. The category of second level interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at www.st.com. Table 5. SMC dimensions Dimensions Ref. E1 D A1 C A2 E2 L b Inches Min. Max. Min. Max. A1 1.90 2.45 0.075 0.096 A2 0.05 0.20 0.002 0.008 b(1) 2.90 3.20 0.114 0.126 (1) 0.15 0.40 0.006 0.016 D 5.55 6.25 0.218 0.246 E 7.75 8.15 0.305 0.321 E1 6.60 7.15 0.260 0.281 E2 4.40 4.70 0.173 0.185 L 0.75 1.50 0.030 0.059 c E Millimeters 1. Dimensions b and c apply to plated leads Figure 3. SMC footprint, dimensions in mm (inches) 1.54 (0.061) 5.11 (0.201) 1.54 (0.061) 3.14 (0.124) 8.19 (0.322) 5/7 Ordering information 4 Ordering information Table 6. 5 Ordering information Order code Marking Package Weight Base qty Delivery mode LNBTVS4-304S LAD SMC 0.245 2500 Tape and reel LNBTVS6-304S LBC SMC 0.245 2500 Tape and reel Revision history Table 7. 6/7 LNBTVSx-304 Revision history Date Revision 1-Apr-2008 1 Changes First release LNBTVSx-304 Please Read Carefully: Information in this document is provided solely in connection with ST products. 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