Varistor Products High Reliability Varistors MIL QPL High Reliability Varistors Description DA Series Littelfuse High Reliability Varistors offer the latest in increased product performance, and are available for applications requiring quality and reliability assurance levels consistent with military or other standards (MIL-STD-19500, MIL-STD-750, Method 202). Additionally, Littelfuse Varistors are inherently radiation hardened compared to Silicon Diode suppressors as illustrated in Figure 1. ZA Series Littelfuse High-Reliability Varistors involve five categories: DB Series 1 DSSC Qualified Parts List (QPL) MIL-R-83530 (4 items presently available) 2 Littelfuse High Reliability Series TX Equivalents (29 items presently available) 3 Custom Types Agency Approvals t %44$"QQSPWFE t *40"QQSPWFE t 21--JTUFE t 6-3FDPHOJ[FE t $&$$$FSUJmFE t $4"$FSUJmFE Processed to customer-specific requirements - (SCD) or to Standard Military Flow 4 Commercial Item Descriptors (CID) identified for Government use: CID AA-55564-3 - Littelfuse ZA Series High Reliability MOVs CID AA-55564-2 - Littelfuse DA, DB Series (c)2008 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/za hirel.html or /db hirel.html for current information. 197 Revision: January 9, 2009 High Reliability Varistors Varistor Products High Reliability Varistors 1) DSSC Qualified Parts List (QPL) MIL-R-83530 This series of varistors are screened and conditioned in accordance with MIL-R-83530 as outlined in Table 2. Manufacturing system conforms to MIL-I-45208; MIL-Q-9858. Table 1. MIL-R-83530/1 Ratings and Characteristics Part Number M83530/ Nominal Varistor Voltage (V) Tolerance (%) 1-2000B 1-2200D 1-4300E 1-5100E 200 220 430 510 -/+10 +10, -5 +5, -10 +5, -10 Voltage Rating (V) (RMS) (DC) Energy Rating (J) 130 150 275 320 175 200 369 420 50 55 100 120 Clamping Voltage Capacitance at 100A at 1MHz (pF) (V) 325 360 680 810 3800 3200 1800 1500 Clamping Voltage At Peak Current Rating (V) 570 650 1200 1450 ITM (A) Nearest Commercial Equivalent 6000 6000 6000 6000 V130LA20B V150LA20B V275LA40B V320LA40B Table 2. Mil-R-83530 Group A, B, and C Inspections AQL (Percent Defective) Major Minor Number of Sample Units Failures Allowed High Temperature Life (Stabilization Bake) 100% - - - - Thermal Shock 100% - - - - Inspection Group A SUBGROUP 1 Power Burn-In 100% - - - - Clamping Voltage 100% - - - - Nominal Varistor Voltage 100% - - - - Visual and Mechanical Examination - 1.0% AQL 7.6% LQ 25% AQL 13.0% LQ Per Plan - Body Dimensions - Per Plan - Diameter and Length of Leads - Per Plan - Marking - Per Plan - Workmanship - Per Plan - SUBGROUP 2 SUBGROUP 3 Solderability Group B - - - Per Plan - - - - Per Plan - - - - Per Plan - Terminal Strength (Lead Fatigue) - - - Per Plan - Moisture Resistance - - - Per Plan - Peak Current - - - Per Plan - Energy - - - Per Plan - High Temperature Storage - - - 10 0 Operating Life (Steady State) - - - 10 0 Pulse Life - - - 10 0 Shock - - - 10 0 Vibration - - - 10 0 Constant Acceleration - - - 10 0 Energy - - - 10 0 SUBGROUP 1 Dielectric Withstanding Voltage SUBGROUP 2 Resistance to Solvents SUBGROUP 3 Group C EVERY 3 MONTHS High Reliability Varistors 198 Revision: January 9, 2009 (c)2008 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/za hirel.html or /db hirel.html for current information. Varistor Products High Reliability Varistors 2) Littelfuse High Reliability Series TX Equivalents TABLE 5. Available TX Model Types Model Size Device Mark (See Section 4) Nearest Commercial Equivalent V130LTX2 V130LTX10A V130LTX20B 7mm 14mm 20mm 130TX 130TX10 130TX20 V130LA2 V130LA10A V130LA20A V150LTX2 V150LTX10A V150LTX20B 7mm 14mm 20mm 150TX 150TX10 150TX20 V150LA2 V150LA10A V150LA20B V250LTX4 V250LTX20A V250LTX40B 7mm 14mm 20mm 250TX 250TX20 250TX40 V250LA4 V250LA20A V250LA40B (See Section 4) Nearest Commercial Equivalent TX Model TX Model Model Size Device Mark V8ZTX1 V8ZTX2 7mm 10mm 8TX1 8TX2 V8ZA1 V8ZA2 V12ZTX1 V12ZTX2 7mm 10mm 12TX1 12TX2 V12ZA1 V12ZA2 V22ZTX1 V22ZTX3 7mm 14mm 22TX1 22TX3 V22ZA1 V22ZA3 V24ZTX50 20mm 24TX50 V24ZA50 V33ZTX1 V33ZTX5 V33ZTX70 7mm 14mm 20mm 33TX1 33TX5 33TX70 V33ZA1 V33ZA5 V33ZA70 V420LTX20A V420LTX40B 14mm 20mm 420TX20 420TX40 V420LA20A V420LA40B V68ZTX2 V68ZTX10 7mm 14mm 68TX2 68TX10 V68ZA2 V68ZA10 V480LTX40A V480LTX80B 14mm 20mm 480TX40 480TX80 V480LA40A V480LA80B V82ZTX2 V82ZTX12 7mm 14mm 82TX2 82TX12 V82ZA2 V82ZA12 V510LTX40A V510LTX80B 14mm 20mm 510TX40 510TX80 V510LA40A V510LA80B The TX Series of varistors are 100% screened and conditioned in accordance with MIL-STD-750.Tests are as outlined in Table 6. INSPECTION LOTS FORMED AFTER ASSEMBLY > LOTS PROPOSED FOR TX TYPES > 100% SCREENING REVIEW OF DATA TX PREPARA TION FOR DELIVERY > > QA ACCEPTANCE SAMPLE PER APPLICABLE DEVICE SPECIFICATION TABLE 6. TX Equivalents Series 100% Screening MIL-STD-105 LTPD LEVEL AQL Electrical (Bidirectional) VN(DC), VC (Per Specifications Table) II 0.1 - Dielectric Withstand Voltage MIL-STD-202, Method 301, 2500V Min. at 1.0ADC - - 15 Solderability MIL-STD-202, Method 208, No Aging, Non-Activated - - 15 TABLE 7. Quality Assurance Acceptance Test Screen High Temperature Life (Stabilization Bake) MIL-STD-750 Method Condition TX Requirements 1032 24 hours min at max rated storage temperature. 100% 1051 No dwell is required at 25C. Test condition A1, 5 cycles -55C to +125C FYUSFNFT NJOVUFT 100% Humidity Life 85C, 85% RH, 168 Hrs. 100% Interim Electrical VN(DC) VC (Note 3) As specified, but including delta parameter as a minimum. (Temperature Cycling) Power Burn-In 1038 Final Electrical +VN(DC) VC (Note 3) External Visual Examination Condition B, 85C, rated VM(AC), 72 hours min. As specified - All parameter measurements must be completed within 96 hours after removal from burn-in conditions. 2071 To be performed after complete marking. (c)2008 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/za hirel.html or /db hirel.html for current information. 199 Revision: January 9, 2009 100% Screen 100% 100% Screen 100% High Reliability Varistors High Reliability MOVs Thermal Shock Varistor Products High Reliability Varistors 3) Custom Types In addition to our comprehensive high-reliability series, Littelfuse can screen and condition to specific requirements. Additional mechanical and environmental capabilities are defined in Table 8. TABLE 8. Mechanical And Environmental Capabilities (Typical Conditions) Test Name Terminal Strength Test Method Description MIL-STD-750-2036 3 Bends, 90 Arc, 16oz. Weight Drop Shock MIL-STD-750-2016 1500g's, 0.5ms, 5 Pulses, X1, V1, Z1 Variable Frequency Vibration MIL-STD-750-2056 20g's, 100-2000Hz, X1, V1, Z1 Constant Acceleration MIL-STD-750-2006 V2, 20,000g's Min Salt Atmosphere MIL-STD-750-1041 35C, 24Hr, 10-50g/m2 Day Soldering Heat/Solderability MIL-STD-750-2031/2026 260C, 10s, 3 Cycles, Test Marking Resistance to Solvents MIL-STD-202-215 Permanence, 3 Solvents Flammability MIL-STD-202-111 15s Torching, 10s to Flameout Flammability Cyclical Moisture Resistance UL1414 MIL-STD-202-106 3 ; 15s Torching 10 Days Steady-State Moisture Resistance MIL-STD-750-1021.3 85/85 96Hr Biased Moisture Resistance MIL-STD-750-1021.3 Not Recommended for High-Voltage Types Temperature Cycle MIL-STD-202-107 -55C to 125C, 5 Cycles High-Temperature Life (Nonoperating) MIL-STD-750-1032 125C, 24Hr Burn-In MIL-STD-750-1038 Rated Temperature and VRMS Hermetic Seal MIL-STD-750-1071 Condition D High Reliability Varistors 200 Revision: January 9, 2009 (c)2008 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/za hirel.html or /db hirel.html for current information.