BA/BB Varistor Series RoHS Description The BA and 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, transportation equipment and other heavy industrial A line applications. Agency Approvals Agency Agency Approval Agency File Number UL1449 E3116 - for only. These varistors have similar package construction but differ in size and ratings. The BA models are rated from 130 to 880V M(A). The BB models from 10 to 2800V M(A). Both the BA and feature improved creep and strike capability to minimize breakdown along the package surface, a package design that provides complete electrical isolation of the disc subassembly, and rigid terminals to ensure secure wire contacts. See BA/ Device Ratings and Specifications Table for part number and brand information. Additional Information Features Datasheet Resources Samples High energy absorption capability W TM 30J,000J Wide operating voltage range V M(A)RMS 130V to 880V 10V to 2800V Rigid terminals for secure wire contact ase design provides complete electrical isolation of disc subassembly Littelfuse largest packaged disc 60mm diameter No derating up to 85º ambient RoHS compliant Absolute Maximum Ratings For ratings of individual members of a series, see Device Ratings and Specifications chart ontinuous Units Steady State Applied Voltage: A Voltage Range (V M(A)RMS ) 130 to 880 10 to 2800 V D Voltage Range (V M(D) ) 175 to 11 1400 to 30 V Transients: Peak Pulse urrent (I TM ) For 8/µs urrent Wave (See Figure 2),000 to 70,000 70,000 A Single Pulse Energy Range For 2ms urrent Squarewave (W TM ) 4 to 30 3800 to 000 J Operating Ambient Temperature Range (T A ) -55 to +85-55 to +85 O Storage Temperature Range (T STG ) -55 to +125-55 to +125 O Temperature oefficient (a V ) of lamping Voltage (V ) at Specified Test urrent <0.01 <0.01 %/ O Hi-Pot Encapsulation (OATING Isolation Voltage apability) (Dielectric must withstand indicated D voltage for one minute per MIL STD 2, Method 301) 00 00 V OATING Insulation Resistance 00 00 MΩ AUTION: 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.
BA/ Ratings & Specifications Maximum Rating (85 ) Specifications (25 ) Part Number ontinuous V RMS V D Energy (2ms) Transient Peak urrent 8 x µs Varistor Voltage at 1mA D Test urrent Maximum lamping Volt V at 0A urrent (8/µs) Typical apacitance f = 1MHz V M(A) V M(D) W TM I TM Min V N(D) Max V (V) (V) (J) (A) (V) (V) (V) (V) (pf) V131BA60 130 175 4 000 184.5 5 225.5 340 000 V151BA60 1 0 530 000 216 240 264 400 16000 V251BA60 2 330 880 000 351 390 429 6 000 V271BA60 275 369 9 000 387 430 473 680 9000 V321BA60 3 4 10 000 459 5 561 760 70 V421BA60 4 560 10 70000 612 680 748 60 6000 V481BA60 480 640 1600 70000 675 7 825 1160 50 V511BA60 5 675 1800 70000 738 8 902 1300 00 V571BA60 575 730 70000 819 9 01 14 40 V661BA60 660 8 2300 70000 945 1155 1640 4000 V751BA60 7 970 2600 70000 80 10 13 1880 30 V881BA60 880 11 30 70000 13 10 16 2340 2700 V112BB60 10 1400 3800 70000 1665 18 35 2940 20 V142BB60 1400 17 00 70000 70 2300 2530 3600 1800 V172BB60 1700 21 6000 70000 2765 3030 4300 10 V2BB60 00 70 70000 2970 3300 3630 50 10 V242BB60 2400 3000 8600 70000 35 3900 4290 60 00 V282BB60 2800 30 000 70000 4230 4700 5170 7400 800 NOTE: Average power dissipation of transients not to exceed 2.5W. See Figures 3 and 4 for more information on power dissipation.
Power Dissipation Ratings Peak Pulse urrent Test Waveform PERENT OF RATED VALUE 0 90 80 70 60 40 30 0-55 60 70 80 90 0 1 1 130 140 1 AMBIENT TEMPERATURE ( o ) Figure 1 Figure 2 FIGURE 1. URRENT, ENERGY AND POWER DERATING URVE Should transients occur in rapid succession, the average power dissipation required is simply the energy (watt-seconds) per pulse times the number of pulses per second. The power so developed must be within the specifications shown on the Device Ratings and haracteristics Table for the specific device. Furthermore, the operating values need to be derated at high temperatures as shown in the above diagram. 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. PERENT OF PEAK VALUE 0 90 O 1 T T 1 T 2 TIME 0 1 = Virtual Origin of Wave T = Time from % to 90% of Peak T 1 = Rise Time = 1.25 x T T 2 = Decay Time Example - For an 8/ µs urrent Waveform: 8µs = T 1 = Rise Time µs = T 2 = Decay Time O 1 = Virtual Origin of T = Time From % T 1 = Virtual Front Tim T 2 = Virtual Time to H Example: For an 8/ s 8 s = T 1 = Virtual Fron s = T 2 = Virtual Time FIGURE 2. PEAK PULSE URRENT TEST WAVEF Stand by Power Dissipation vs Applied V Rms at Varied Temperatures Typical Stability of Standby Power Dissipation at Rated V RMS vs Time POWER DISSIPATION (W) PER kv OF RATED V RMS 1.0 0.8 0.6 0.4 0.2 0.1 0.08 0.06 0.04 TYPIAL TEMPERATURE OEFFIIENT OF POWER DISSIPATION = 2.2%/ o MAX AT T A = 85 o MAX AT T A = 25 o TYP AT T A = 25 o HOURS, T A = 85 o 80 90 0 1 0 0 0 PERENTAGE OF MAXIMUM RATED V RMS (%) TIME AT RATED V RMS (HOURS) Figure 3 Figure 4 FIGURE 3. STANDBY POWER DISSIPATION vs APPLIED FIGURE 4. TYPIAL STABILITY OF STANDBY POWER V RMS AT VARIED TEMPERATURES DISSIPATION AT RATED V RMS vs TIME POWER DISSIPATION (W) PER kv OF RATED V RMS 0.5 0.4 0.3 0.2 0.1
Maximum lamping Voltage V131BA60 - V881BA60 Maximum lamping Voltage V112BB60 - V282BB60 MAXIMUM PEAK VOLTS (V) 6,000 4,000 3,000 900 800 700 600 0 400 300 MAX LAMPING VOLTAGE 130 TO 880V M(A) RATING T A = -55 o TO 85 o V881BA60 V751BA60 V661BA60 V571BA60 V321BA60 V271BA60 V251BA60 V151BA60 V131BA60 V511BA60 V481BA60 V421BA60 30,000,000,000 9,000 8,000 7,000 6,000 V282BB60 V242BB60 4,000 V2BB60 V172BB60 3,000 V142BB60 V112BB60 0-2 -1 0 1 2 3 4 5-2 -1 0 1 2 3 4 5 PEAK AMPERES (A) PEAK AMPERES (A) Figure 5 Figure 6 FIGURE 5. LAMPING VOLTAGE FOR V131BA60 - V881BA60 FIGURE 6. LAMPING VOLTAGE FOR V112BB60 - V282BB60 MAX PEAK VOLTS (V) MAX LAMPING VOLTAGE 10 TO 2800V M(A) RATING T A = -55 o TO 85 o Repetitive Surge apability Repetitive Surge apability,000 0,000 1 1,000,000 2,000,000 2,000 0 0 0 2 3 4 5 6 0 0 0 2 3 4 5 6 INDEFINITE INDEFINITE 0,000 0,000 Figure 7 IMPULSE DURATION (μs) Figure 8 IMPULSE DURATION (μs) FIGURE 7. SURGE URRENT RATING URVES FOR FIGURE 8. SURGE URRENT RATING URVES FOR NOTE: If pulse ratings are exceeded, a shift of V N (D) (at specified current) of more than +/-% could result.this type of shift, which normally results in a decrease of V N (D), may 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. SURGE URRENT (A) SURGE URRENT (A) Physical Specifications Environmental Specifications Lead Material BA / BB opper with Tin Plating Operating Temperature -55 to +85 Insulating Material Device Labeling ured, flame retardant epoxy polymer meets UL94V 0 requirements. Marked with LF, Part Number and Date code Storage Temperature Humidity Aging Thermal Shock -55 to +125 +85, 85% RH, 00 hours +/- 5% typical resistance change +85 to -40 times +/- 5% typical resistance change Solvent Resistance MIL STD 2, Method 215 Moisture Sensitivity Level 1, J-STD-0
Metal-Oxide PAN HEAD SLOTTED SREW Varistors (MOVs).5 44.5 (1.752).5 Dimensions 0 (3.94) 40±2 (1.575 ± 0.08) M6 INTERNATIONAL THREAD PAN HEAD SLOTTED SREW 23.5 (0.925) 79±3 (3.11±0.12) 95 (3.74) MAX 0 (3.94) 6 (0.24) PAN HEAD SLOTTED SREW 86±2 (3.38±0.08).5 0 (3.94) Notes: Typical weight: :2g and : 600g Dimensions are in mm; inches in parentheses for reference only..5 44.5 (1.752) 0 (3.94) Part Numbering System V XX X BA60 40±2 (1.575 ± 0.08) M6 INTERNATIONAL THREAD VARISTOR V M(A) First Two Significant Digits* DIS SIZE (60mm) SERIES DESIGNATOR BA or BB 79±3 (3.11±0.12) 95 (3.74) MAX V M(A) Decade Multiplier* (1 or 2) 6 (0.24) *Refer to Rating & Specifications table Examples: 130 VM(A) = 131 2800 VM(A) = 282 86±2 (3.38±0.08) 0 (3.94)