Technical Data 11156 Effective September 2020 STS232120U901 TVS Diode array ESD suppressor Applications RS-232, RS-422 & RS-485 Servers, notebook, and desktop Cellular handsets and accessories Control & monitoring systems Portable electronics Wireless bus protection Set-top box Product features Environmental compliance and general 500 watts peak pulse power per line specifications (t =8/20 s) P IEC61000-4-2 (ESD) Protects two I/O lines with uni-directional 30 kV (air) Low clamping voltage 30 kV (contact) Working voltage:12 V IEC61000-4-5 (Lightning) 20 A (8/20 s) Low leakage current HALOGEN Meets moisture sensitivity level (MSL) 3 HF Pb Molding compound flammability rating: FREE UL 94V-0 Termination finish:Tin Ordering part number ST S23 2 120 U 901 Family Package (S23- SOT23) Number of channels (2-2) Operating voltage (120- 12 V) Bi/Uni directional (U- Uni) Capacitance (901- 90 pF) Pin out/functional diagramTechnical Data 11156 STS232120U901 Effective September 2020 TVS Diode array ESD suppressor Absolute maximum ratings (+25 C, RH=45%-75%, unless otherwise noted) STS232120U901 Parameter Symbol Value Unit Peak pulse power dissipation on 8/20 s waveform P 500 W pp ESD per IEC 61000-4-2 (Air) V +/-30 kV ESD ESD per IEC 61000-4-2 (Contact) +/-30 Lead soldering temperature T +260 (10 seconds) C L Operating junction temperature range T -55 to +125 C J Storage temperature range T -55 to +150 C STG Electrical characteristics (+25 C) STS232120U901 Parameter Test condition Minimum Typical Maximum Symbol (Units) Reverse working voltage - - - 12 V (V) RWM Reverse breakdown voltage I = 1 mA 13 - - V (V) T BR Reverse leakage current V = 12 V - - 0.15 I (A) RWM R Clamping voltage I = 1 A, - 14 18 V (V) PP C t = 8/20 s p I = 20 A, - 23 26 V (V) PP C t = 8/20 s p Junction capacitance V = 0 V, f = 1 MHz - 90 - C (pF)* RWM J Any I/O pin to GND V = 0 V, f = 1 MHz - 45 - C (pF)** RWM J Between I/O pins * C measured at VRWM = 0 V, 1 MHz (pin1 to pin3, pin2 to pin3). J **C measured at VRWM = 0 V, 1 MHz (pin1 to pin2, pin2 to pin1). J Mechanical parameters, pad layout- mm/inches Millimeters Inches Dimension Minimum Maximum Minimum Maximum A 0.90 1.15 0.035 0.045 A1 0.00 0.10 0.000 0.004 b 0.25 0.325 0.010 0.013 C 0.22 0.25 0.009 0.010 D 2.80 3.00 0.110 0.118 e 1.80 1.90 0.071 0.075 E 1.20 1.40 0.047 0.055 L 0.30 0.50 0.012 0.020 He 2.25 2.55 0.089 0.100 X 0.80 0.031 X1 0.95 0.037 Y 0.80 0.031 Z 2.02 0.080 Part marking 2 www.eaton.com/electronics