Metal-Oxide Varistors (MOVs) Industrial High Energy Terminal Varistors > DA/DB Series DA/DB Varistor Series RoHS Description DA SERIES The DA and DB Series transient surge suppressors are heavy-duty industrial Metal-Oxide Varistors (MOVs) designed to provide surge protection for motor controls and power supplies used in oil- drilling, mining, and transportation equipment. These UL recognized varistors have identical ratings and specifications but differ in case construction to provide flexibility in equipment designs. DB SERIES DA Series devices feature rigid terminals to ensure secure wire contacts. Both the DA and DB Series feature improved creep and strike distance capability to minimize Agency Approvals breakdown along the package surface design that provides complete electrical isolation of the disc subassembly. Agency Agency Approval Agency File Number See DA/DB Series Device Ratings and Specifications UL1449 E320116 table for part number and brand information. Additional Information Features • High energy • Case design provides absorption capability complete electrical W up to 1050J isolation of disc TM Datasheet Resources Samples • Wide operating subassembly DA DA DA voltage range • 40mm diameter disc V 130V to 750V • No derating up to M(AC)RMS • Screw terminals (DA 85ºC ambient Series),quick connect • RoHS compliant Datasheet Resources Samples push-on connectors DB DB DB (DB Series) Absolute Maximum Ratings • For ratings of individual members of a series, see Device Ratings and Specifications chart Continuous DA/DB Series Units Steady State Applied Voltage: AC Voltage Range (V ) 130 to 750 V M(AC)RMS DC Voltage Range (V ) 175 to 970 V M(DC) Transients: Peak Pulse Current (I ) TM For 8/20µs Current Wave (See Figure 2) 40,000 A Single Pulse Energy Range For 2ms Current Squarewave (W ) 270 to 1050 J TM Operating Ambient Temperature Range (T) -55 to +85 ºC A Storage Temperature Range (T ) -55 to +125 ºC STG Temperature Coefficient (aV) of Clamping Voltage (V) at Specified Test Current <0.01 %/ºC C Hi-Pot Encapsulation (COATING Isolation Voltage Capability) 5000 V (Dielectric must withstand indicated DC voltage for one minute per MIL-STD 202, Method 301) COATING Insulation Resistance 1000 MΩ CAUTION: Stresses above those listed in "Absolute Maximum Ratings" 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. © 2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 09/14/17

Metal-Oxide Varistors (MOVs) Industrial High Energy Terminal Varistors > DA/DB Series DA/DB Series Ratings & Specifications Maximum Rating (85ºC) Specifications (25ºC) Continuous Transient Maximum Typical Clamping DePvaircte N Burmanbdeirng VRMS VDC E(n2emrgs)y 8C uPx er2rae0knµ st VarisDtCor T Veostl tCaguerr eant t1mA 20V0(o8A/l 2tC V0uµCr sar)et nt tCa1naMpceaH cfzi -= V V W I Min V Max V C M(AC) M(DC) TM TM NOM C DA DB (V) (V) (J) (A) (V) (V) (V) (A) (pF) V131DA40 V131DB40 130 175 270 400001 184.5 205 225.5 345 10000 V151DA40 V151DB40 150 200 300 400002 216 240 264 405 8000 V251DA40 V251DB40 250 330 370 40000 351 390 429 650 5000 V271DA40 V271DB40 275 369 400 40000 387 430 473 730 4500 V321DA40 V321DB40 320 420 460 40000 459 510 561 830 3800 V421DA40 V421DB40 420 560 600 40000 612 680 748 1130 3000 V481DA40 V481DB40 480 640 650 40000 675 750 825 1240 2700 V511DA40 V511DB40 510 675 700 40000 738 820 902 1350 2500 V571DA40 V571DB40 575 730 770 40000 819 910 1001 1480 2200 V661DA40 V661DB40 660 850 900 40000 945 1050 1155 1720 2000 V751DA40 V751DB40 750 970 1050 40000 1080 1200 1320 2000 1800 Note : Average power dissipation of transients not to exceed 2.0W. Power Dissipation Ratings Peak Pulse Current Test Waveform 100 UE 100 RATED VALUE 98760000 OF PEAK VAL 9500 ExOaTTmT112 p====l eTVVV:iiiimrrrFtttuuueoaaa rFlll arOFTonrirmmo i8gne /it12n t0t0 oio%m fHs e W ta Co=la fu9 v1Vr0er.ae2%lun5 et o • Wf ( tPIamevpaekufolsrme D: uration) PERCENT OF 54320000 PERCENT 10 208 ss == TT12 == VViirrttuuaall FTrimonet tToi mHealf Value 10 O1 T TIME 0 -55 50 60 70 80 90 100 110 120 130 140 150 T1 Figure 1 AMBIENT TEMPERATURE (oC) Figure 2 T2 NOTES: FIGURE 1. CURRENT, ENERGY AND POWER DERATING 1c.u rPreeankt icsu 3rr0eknAt Afoprp alipepsCl itcoUa tRaiopVnpEslic garteioantesr r tahteand 1u1p5 tVo. 115VRMS. Peak FIGURE 2. PEAK PULSE CURRENT TEST WAVEFORM 2. Peak current applies to applications rated up to 132VRMS. Peak 0 = Virtual Origin of Wave 1 Current is 30kA for applications greater than 132V. T = Time from 10% to 90% of Peak T = Rise Time = 1.25 x T 1 Should transients occur in rapid succession, the T = Decay Time 2 average power dissipation required is simply the energy Example - For an 8/20 µs Current Waveform: (watt- seconds) per pulse times the number of pulses 8µs = T = Rise Time 1 per second. The power so developed must be within 20µs = T = Decay Time 2 the specifications shown on the Device Ratings and Specifications table for the specific device. Furthermore, the operating values need to be derated at high temperatures as shown above. Because varistors can only dissipate a relatively small amount of average power they are, therefore, not suitable for repetitive applications that involve substantial amounts of average power dissipation. © 2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 09/14/17

Metal-Oxide Varistors (MOVs) Industrial High Energy Terminal Varistors > DA/DB Series Maximum Clamping Voltage Repetitive Surge Capability V131DA40 - V751DA40 and V131DB40 - V751DB40 V131DA40 - V751DA40 and V131DB40 - V751DB40 654,,,000000000 MD13IAS0X CTI OMS UI7ZM5E0 C 4V0LMmA(MmACP)IN RGA TVINOGLTAGEV751DA/DTBA4 =0 -55oC to 85oC 5200,,000000 1 210 VV1133D11IDDSABC44 S00 I--Z VVE77 455011mDDmAB4400 V661DA/DB40 10,000 K VOLTS (V) 32,,000000 V4V2V4158D111ADD/ADA/BD/D4B0B4400 V571DA/DB40 RRENT (A) 521,,,000000000 110032 104105106 MUM PEA 1,987600000000000 URGE CU 520000 XI 500 S 100 A M 400 50 V151DA/DB40 V321DA/DB40 300 V271DA/DB40 20 INDEFINITE V131DA/DB40 V251DA/DB40 200 10 10-2 10-1 100 101 102 103 104 105 20 100 1,000 10,000 Figure 3 PEAK AMPERES (A) Figure 4 IMPULSE DURATION (μs) FIGURE 3. CLAMPING VOLTAGE FOR V131DA40, V131DB40 - V751DA40, V751DB40 FIGURE 5. SURGE CURRENT RATING CURVES FOR NOTE: If pulse ratings are exceeded, a shift of V (at specified current) of more than N(DC) V131DA40, V131DB40 - V751DA40, V751DB40 +/-10% could result. This type of shift, which normally results in a decrease of V , may N(DC) result in the device not meeting the original published specifications, but it does not prevent the device from continuing to function, and to provide ample protection. Physical Specifications Environmental Specifications DA - Copper, Tin–plated Lead Material Operating Temperature -55°C to +85°C DB - Brass, Tin–plated Cured, flame retardant epoxy polymer Insulating Material Storage Temperature -55°C to +125°C meets UL94V–0 requirements. Marked with LF, part number and date +85°C, 85% RH, 1000 hours Device Labeling code Humidity Aging +/- 5% typical resistance change +85°C to -40°C 10 times Thermal Shock +/- 5% typical resistance change Solvent Resistance MIL–STD–202, Method 215 Moisture Sensitivity Level 1, J-STD-020 © 2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 09/14/17

Metal-Oxide Varistors (MOVs) Industrial High Energy Terminal Varistors > DA/DB Series Product Dimensions (mm) DA SERIES DB SERIES “A” DIMENSION: 60.3 ALL DIMENSIONS ARE MAXIMUM FILISTER HEAD SCREW - 51mm (2.01) (2.37) EXCEPT WHERE NOTED PAN HEAD SCREW - 53mm (2.09) 44.45 ± 0.75 (1.75 0.03) A 4.3mm 15mm (0.59) (0.170) 46.8 Max. 25.4 ± 0.75 (1.84) (1.00 0.03) 23mm 1mm M4 INTERNATIONAL (0.90 0.04) THREAD HOLES 0.23 THRU BORE 0.370 x 0.370 DP 40.5 ± 1.0 12.7 (1.6 0.04) (0.50) 12.7 1.6 (0.50) 67mm (0.06) (2.64) 6.60 2 HOLES (0.26) 57mm 6.60 (2.24) (0.26) 41 23 (1.61) (0.90) 62mm (2.44) 4.5mm (0.18) Dimensions in millimeters and (inches). Part Numbering System V XX X DA 40 VARISTOR DISC SIZE (60mm) VVV MMM(((AAACCC))) SERIES DESIGNATOR First Tw o Significant Digits* DA or DB V M(AC) Decade Multiplier* *Refer to Rating & Specifications table Example: 130 VM(AC) = 131 Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at www.littelfuse.com/disclaimer-electronics. © 2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 09/14/17

Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: L ittelfuse: V421DA40 V321DA40 V251DB40 V481DB40 V251DA40 V481DA40 V661DB40 V511DB40 V661DA40 V271DA40 V571DB40 V751DB40 V151DB40 V131DB40 V751DA40 V321DB40 V151DA40 V421DB40 V271DB40 V131DA40 V571DA40 V511DA40