Metal-Oxide Varistors (MOVs) TM Radial Lead Varistors > UltraMOV 25S Varistor Series UltraMOV 25S Varistor Series RoHS Description The UltraMOV 25S Varistor Series is designed for applications requiring high peak surge current ratings and high energy absorption capability. UltraMOV 25S varistors are primarily intended for use in AC Line Voltage applications such as Surge Protective Devices (SPD), Uninterruptable Power Supplies (UPS), AC Power Taps, AC Power Meters, or other products that require voltage clamping of high transient surge currents from sources such as lightning, inductive load switching, or capacitor bank switching. UltraMOV 25S has compact square disc which is Agency Approvals made with radial wire leads. UltraMOV 25S varistors are manufactured with recognized epoxy encapsulation Agency Agency Approval Agency File Number and are rated for ambient temperatures up to 85C with no derating. This UltraMOV 25S Series is UL1449 E320116 LASER-branded and is supplied in bulk packaging. IEC 61051-1, IEC61051-2, IEC 60950-1 (Annex Q) Features J 50479672 IEC 62368-1(Annex G) Leadfree, Halogen- 125C operating Free and RoHS temperature-phenolic compliant coating option High peak surge 10kA Nominal current rating Discharge Current (In) Additional Information (I ) 22kA, single as required by UL 1449 TM 8/20s pulse. 20kV/10kA (1.2/50 s, Maximum continuous 8/20 s) combination operating voltage pulse as required (MCOV): 115Vac by Annex G of Datasheet Resources Samples - 750Vac IEC 62368-1 Absolute Maximum Ratings For ratings of individual members of a series, see Device Ratings and Specifications chart Continuous UltraMOV 25S Varistor Series Units Steady State Applied Voltage: AC Voltage Range (V ) 115 to 750 V M(AC)RMS DC Voltage Range (V ) 150 to 970 V M(DC) Transients: Peak Pulse Current (I ) 8x20s Current Wave Single Pulse 22,000 A TM Single-Pulse Energy Capability (W ) 2ms Current Wave 230 to 890 J TM Operating Ambient Temperature Range (T ) -40 to +85 C A Storage Temperature Range (T ) -40 to +125 C STG V Temperature Coefficient (a ) of Clamping Voltage (V ) at Specified Test Current <0.01 %/C C Hi-Pot Encapsulation (COATING Isolation Voltage Capability) 2500 V Dielectic Withstand DC for 1 min per MILSTD202, Method 301 Insulation Resistance of the Epoxy Coating 1000 M Caution: Stresses above those listed inAbsolute Maximum Rating may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. 2020 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD. 12/23/20Metal-Oxide Varistors (MOVs) TM Radial Lead Varistors > UltraMOV 25S Varistor Series Ratings & Specifications Maximum Rating (85C) Specifications (25C) Continuous Transient UL 1449 Varistor Voltage Maximum Clamping Typical Capaci- Voltage Peak Surge at 1mA DC Voltage at 100A, tance Energy Protection AC Volts DC Volts Current Test Current 8 x 20s f = 1MHz Part Number Branding 2ms Rating 8 x 20s W I V V TM TM NOM NOM V V V VPR C M(AC)RMS M(DC) C 1 x Pulse 1 x Pulse Min Max (V) (V) (J) (A) (V) (V) (pF) V25S115P P25S115 115 150 230 22000 162 198 295 400 4500 V25S130P P25S130 130 170 255 22000 184.5 225.5 335 500 3900 V25S140P P25S140 140 180 285 22000 198 242 355 500 3500 V25S150P P25S150 150 200 300 22000 216 264 390 500 3200 V25S175P P25S175 175 225 315 22000 243 297 450 600 2550 V25S230P P25S230 230 300 400 22000 324 396 585 700 1900 V25S250P P25S250 250 320 435 22000 351 429 640 800 1750 V25S275P P25S275 275 350 470 22000 387 473 700 900 1610 V25S300P P25S300 300 385 500 22000 423 517 765 1000 1450 V25S320P P25S320 320 420 540 22000 459 561 825 1000 1350 V25S385P P25S385 385 505 630 22000 558 682 1010 1200 1080 V25S420P P25S420 420 560 655 22000 612 748 1100 1500 1000 V25S440P P25S440 440 585 675 22000 643.5 786.5 1160 n/a 900 V25S460P P25S460 460 615 690 22000 675 825 1220 n/a 870 V25S510P P25S510 510 670 700 22000 738 902 1335 n/a 820 V25S550P P25S550 550 745 765 22000 819 1001 1475 n/a 750 V25S625P P25S625 625 825 800 22000 900 1100 1625 n/a 660 V25S750P P25S750 750 970 890 22000 1080 1320 1950 n/a 550 Note: Average powder dissipation of transients should not exceed 1.5 watts. Transient V-I Characteristics Curves Peak Current, Energy and Power Derating Curve Peak Pulse Current Test Waveform for Clamping Voltage 100 100 80 50 60 40 20 0 t TIME O 1 t 1 t 2 0 Figure 2 55 50 60 70 80 90 100 110 120 130 AMBIENT TEMPERATURE (C) 0 = Virtual Origin of Wave 1 Figure 1 T = Time from 10% to 90% of Peak T = Rise Time = 1.25 x T 1 For applications exceeding 85C ambient temperature, the T = Decay Time 2 peak surge current and energy ratings must be reduced as Example - For an 8/20 s Current Waveform: shown above. 8s = T = Rise Time 1 20s = T = Decay Time 2 2020 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD. 12/23/20 PE RCENT OF RA TE D VAL UE PERC EN T OF PEAK VAL UE