Additional Resources: Product Page 3D Model PCB Footprint date 01/11/2021 page 1 of 5 SERIES: VSK-S1 DESCRIPTION: AC-DC POWER SUPPLY FEATURES up to 1 W continuous power compact board mount design universal input (85~305 Vac / 120~430 Vdc) single output from 3.3~24 Vdc over current and short circuit protection UL/cUL and CE safety approvals efficiency up to 75% output output output ripple efficiency MODEL 1 voltage current power and noise max max max typ (Vdc) (mA) (W) (mVp-p) (%) VSK-S1-3R3U 3.3 300 1 200 63 VSK-S1-5U 5 200 1 200 68 VSK-S1-9U 9 111 1 200 72 VSK-S1-12U 12 83 1 200 73 VSK-S1-15U 15 67 1 200 74 VSK-S1-24U 24 42 1 200 75 Notes: 1. At full load 20 MHz bandwidth oscilloscope, see Test Configuration section. PART NUMBER KEY VSK-S1 - XX U Base Number Output Voltage cui.comAdditional Resources: Product Page 3D Model PCB Footprint CUI Inc SERIES: VSK-S1 DESCRIPTION: AC-DC POWER SUPPLY date 01/11/2021 page 2 of 5 INPUT parameter conditions/description min typ max units 85 305 Vac voltage 120 430 Vdc frequency 47 63 Hz at 115 Vac 37 mA current at 230 Vac 21 mA at 115 Vac 7 A inrush current at 230 Vac 14 A leakage current 0.15 mA no load power consumption 0.2 W OUTPUT parameter conditions/description min typ max units 3.3 and 5 Vdc output models 4,000 F 9 and 12 Vdc output models 2,200 F maximum capacitive load 15 Vdc output model 1,000 F 24 Vdc output model 680 F line regulation at full load 2 % load regulation at 10 ~ 100% load 5 % 3.3 Vdc model 6 % voltage accuracy all other models 5 % switching frequency 100 kHz PROTECTIONS parameter conditions/description min typ max units over current protection auto restart 110 % short circuit protection continuous, auto restart SAFETY & COMPLIANCE parameter conditions/description min typ max units isolation voltage input to output for 1 minute 3,000 Vac safety approvals UL 60950-1 safety class class II conducted/radiated emissions CISPR22/EN55022 Class B ESD IEC/EN61000-4-2 class B, contact 4kV, air 8kV radiated immunity IEC/EN61000-4-3 class A, 10V/m EF T/burst IEC/EN61000-4-4 class B, 2kV (external circuit required, see figure 3) surge IEC/EN61000-4-5 class B, 2kV (external circuit required, see figure 3) conducted immunity IEC/EN61000-4-6 class A, 10 Vr.m.s PFM IEC/EN61000-4-8 class A, 10 A/m voltage dips & interruptions IEC/EN61000-4-11 class B, 0%-70% MTBF as per MIL-HDBK-217F, 25C 300,000 hours RoHS 2011/65/EU ENVIRONMENTAL parameter conditions/description min typ max units operating temperature see derating curves -25 70 C storage temperature -25 85 C operating humidity non-condensing 90 % storage humidity non-condensing 95 % cui.com