SIOV metal oxide varistors Leaded varistors, EnergetiQ series Series/Type: B722* Date: December 2011 © EPCOS AG 2015. Reproduction, publication and dissemination of this publication, enclosures hereto and the information contained therein without EPCOS' prior express consent is prohibited. EPCOS AG is a TDK Group Company. Leaded varistors B722* EnergetiQ series Construction Square varistor element, leaded Coating: epoxy resin, flame-retardant to UL 94 V-0 Features High-EnergetiQ series Q14/Q20 Maximum load capacity at minimum component height Very high surge current ratings up to 15 kA All types duty cycle @ 6 kV/ 3 kA → 10 pulses, according to IEC 60950-1 Annex Q; IEC 61051-2 All types Inom @ 3 kA (Q14), Inom = 5 kA (Q20) → 15 impulses according to UL 1449, 3rd edition surge current generator (8/20 µs), Type 2 listed PSpice models Approvals UL CSA VDE IEC Delivery mode Bulk (standard), taped versions on reel or in Ammo pack upon request. For further details refer chapter "Taping, packaging and lead configuration" for leaded varistors. General technical data Climatic category Operating temperature Storage temperature Electric strength Insulation resistance Response time Please read Cautions and warnings and Important notes at the end of this document. to IEC 60068-1 to IEC 61051 to IEC 61051 to IEC 61051 Page 2 of 25 40/85/56 40 ... + 85 40 ... +125 ≥ 2.5 ≥ 100 < 25 °C °C kVRMS MΩ ns Leaded varistors B722* EnergetiQ series Electrical specifications and ordering codes Maximum ratings (TA = 85 °C) Ordering code B72214Q0131K101 B72220Q0131K101 B72214Q0141K101 B72220Q0141K101 B72214Q0151K101 B72220Q0151K101 B72214Q0171K101 B72220Q0171K101 B72214Q0211K101 B72220Q0211K101 B72214Q0231K101 B72220Q0231K101 B72214Q0251K101 B72220Q0251K101 B72214Q0271K101 B72220Q0271K101 B72214Q0301K101 B72220Q0301K101 B72214Q0321K101 B72220Q0321K101 B72214Q0351K101 B72220Q0351K101 B72214Q0381K101 B72220Q0381K101 B72214Q0421K101 B72220Q0421K101 B72214Q0461K101 B72220Q0461K101 Type (untaped) SIOVQ14K130 Q20K130 Q14K140 Q20K140 Q14K150 Q20K150 Q14K175 Q20K175 Q14K210 Q20K210 Q14K230 Q20K230 Q14K250 Q20K250 Q14K275 Q20K275 Q14K300 Q20K300 Q14K320 Q20K320 Q14K350 Q20K350 Q14K385 Q20K385 Q14K420 Q20K420 Q14K460 Q20K460 Please read Cautions and warnings and Important notes at the end of this document. VRMS VDC V 130 130 140 140 150 150 175 175 210 210 230 230 250 250 275 275 300 300 320 320 350 350 385 385 420 420 460 460 V 170 170 180 180 200 200 225 225 270 270 300 300 320 320 350 350 385 385 420 420 460 460 505 505 560 560 615 615 Page 3 of 25 imax (8/20 µs) A 8000 15000 8000 15000 8000 15000 8000 15000 8000 15000 8000 15000 8000 15000 8000 15000 8000 15000 8000 15000 8000 15000 8000 15000 8000 15000 8000 15000 Wmax (2 ms) J 75 100 80 110 85 120 100 135 115 165 130 180 140 195 150 215 175 235 185 255 200 280 225 315 245 340 270 380 Pmax W 0.80 1.20 0.80 1.20 0.80 1.20 0.80 1.20 0.80 1.20 0.80 1.20 0.80 1.20 0.80 1.20 0.80 1.20 0.80 1.20 0.80 1.20 0.80 1.20 0.80 1.20 0.80 1.20 Leaded varistors B722* EnergetiQ series Characteristics (TA = 25 °C) Ordering code B72214Q0131K101 B72220Q0131K101 B72214Q0141K101 B72220Q0141K101 B72214Q0151K101 B72220Q0151K101 B72214Q0171K101 B72220Q0171K101 B72214Q0211K101 B72220Q0211K101 B72214Q0231K101 B72220Q0231K101 B72214Q0251K101 B72220Q0251K101 B72214Q0271K101 B72220Q0271K101 B72214Q0301K101 B72220Q0301K101 B72214Q0321K101 B72220Q0321K101 B72214Q0351K101 B72220Q0351K101 B72214Q0381K101 B72220Q0381K101 B72214Q0421K101 B72220Q0421K101 B72214Q0461K101 B72220Q0461K101 Vv (1 mA) V 205 205 220 220 240 240 270 270 330 330 360 360 390 390 430 430 470 470 510 510 560 560 620 620 680 680 750 750 Please read Cautions and warnings and Important notes at the end of this document. ∆Vv (1 mA) % ±10 ±10 ±10 ±10 ±10 ±10 ±10 ±10 ±10 ±10 ±10 ±10 ±10 ±10 ±10 ±10 ±10 ±10 ±10 ±10 ±10 ±10 ±10 ±10 ±10 ±10 ±10 ±10 vc,max (ic) V 340 340 360 360 395 395 455 455 550 550 595 595 650 650 710 710 775 775 840 840 910 910 1025 1025 1120 1120 1240 1240 Page 4 of 25 ic A 65 130 65 130 65 130 65 130 65 130 65 130 65 130 65 130 65 130 65 130 65 130 65 130 65 130 65 130 Ctyp (1 kHz) pF 1300 2400 1200 2200 1100 2000 1000 1800 750 1500 700 1350 650 1250 600 1150 550 1050 500 950 450 870 400 780 360 710 330 650 Leaded varistors B722* EnergetiQ series Dimensional drawings Weight Nominal diameter mm 14 20 VRMS V 130 ... 460 130 ... 460 Weight g 2.4 ... 4.4 4.1 ... 8.2 The weight of varistors in between these voltage classes can be interpolated. Dimensions Ordering code B72214Q0131K101 B72220Q0131K101 B72214Q0141K101 B72220Q0141K101 B72214Q0151K101 B72220Q0151K101 B72214Q0171K101 B72220Q0171K101 B72214Q0211K101 B72220Q0211K101 B72214Q0231K101 B72220Q0231K101 B72214Q0251K101 B72220Q0251K101 B72214Q0271K101 B72220Q0271K101 B72214Q0301K101 B72220Q0301K101 B72214Q0321K101 B72220Q0321K101 B72214Q0351K101 B72220Q0351K101 B72214Q0381K101 B72220Q0381K101 B72214Q0421K101 B72220Q0421K101 B72214Q0461K101 B72220Q0461K101 [e] ±1 mm 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 Please read Cautions and warnings and Important notes at the end of this document. a ±1 mm 1.9 1.9 2.0 2.0 2.1 2.1 2.2 2.2 2.2 2.2 2.3 2.3 2.4 2.4 2.6 2.6 2.8 2.8 2.9 2.9 3.6 3.6 3.9 3.9 4.2 4.2 4.5 4.5 wmax mm 16.5 22.5 16.5 22.5 16.5 22.5 16.5 22.5 16.5 22.5 16.5 22.5 16.5 22.5 16.5 22.5 16.5 22.5 16.5 22.5 16.5 22.5 16.5 22.5 16.5 22.5 16.5 22.5 thmax mm 5.0 5.0 5.1 5.1 5.2 5.2 5.3 5.3 5.4 5.4 5.5 5.5 5.7 5.7 5.8 5.8 6.1 6.1 6.3 6.3 7.3 7.3 7.6 7.6 7.9 7.9 8.2 8.2 Page 5 of 25 hmax mm 19.5 27.0 19.5 27.0 19.5 27.0 19.5 27.0 19.5 27.0 19.5 27.0 19.5 27.0 19.5 27.0 19.5 27.0 19.5 27.0 19.5 27.0 19.5 27.0 19.5 27.0 19.5 27.0 lmin mm 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 d ±0.05 mm 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 Leaded varistors B722* EnergetiQ series Reliability data Test Test methods/conditions Requirement Varistor voltage The voltage between two terminals with To meet the specified value the specified measuring current applied is called VV (1 mADC @ 0.2 ... 2 s). Clamping voltage The maximum voltage between two terminals with the specified standard impulse current (8/20 µs) applied. To meet the specified value Endurance at upper category temperature 1000 h at UCT |∆V/V (1 mA)| ≤10% Surge current derating, 8/20 µs 10 surge currents (8/20 µs), unipolar, interval 30 s, amplitude corresponding to derating curve for 10 impulses at 20 µs Surge current derating, 2 ms 10 surge currents (2 ms), unipolar, |∆V/V (1 mA)| ≤10% interval 120 s, amplitude corresponding (measured in direction of to derating curve for 10 impulses at surge current) 2 ms No visible damage Electric strength IEC 61051-1, test 4.9.2 After having continuously applied the maximum allowable AC voltage at UCT ±2 °C for 1000 h, the specimen shall be stored at room temperature and normal humidity for 1 to 2 h. Thereafter, the change of VV shall be measured. Metal balls method, 2500 VRMS, 60 s The varistor is placed in a container holding 1.6 ±0.2 mm diameter metal balls such that only the terminations of the varistor are protruding. The specified voltage shall be applied between both terminals of the specimen connected together and the electrode inserted between the metal balls. Please read Cautions and warnings and Important notes at the end of this document. Page 6 of 25 |∆V/V (1 mA)| ≤10% (measured in direction of surge current) No visible damage No breakdown Leaded varistors B722* EnergetiQ series Test Test methods/conditions Requirement Climatic sequence The specimen shall be subjected to: a) dry heat at UCT, 16 h, IEC 60068-2-2, test Ba b) damp heat, 1st cycle: 55 °C, 93% r. H., 24 h, IEC 60068-2-30, test Db c) cold, LCT, 2 h, IEC 60068-2-1, test Aa d) damp heat, additional 5 cycles: 55 °C/25 °C, 93% r. H., 24 h/cycle, IEC 60068-2-30, test Db. |∆V/V (1 mA)| ≤10% Rins ≥100 MΩ Then the specimen shall be stored at room temperature and normal humidity for 1 to 2 h. Thereafter, the change of VV shall be measured. Thereafter, insulation resistance Rins shall be measured at V = 500 V. Rapid change of temperature IEC 60068-2-14, test Na, LCT/UCT, dwell time 30 min, 5 cycles |∆V/V (1 mA)| ≤5% No visible damage Damp heat, steady state IEC 60068-2-78, test Ca |∆V/V (1 mA)| ≤10% The specimen shall be subjected to Rins ≥100 MΩ 40 ±2 °C, 90 to 95% r. H. for 56 days without load / with 10% of the maximum continuous DC operating voltage VDC. Then stored at room temperature and normal humidity for 1 to 2 h. Thereafter, the change of VV shall be measured. Thereafter, insulation resistance Rins shall be measured at V = 500 V (insulated varistors only). Please read Cautions and warnings and Important notes at the end of this document. Page 7 of 25 Leaded varistors B722* EnergetiQ series Test Test methods/conditions Solderability IEC 60068-2-20, test Ta, Resistance to soldering heat IEC 60068-2-20, test Tb, method 1A, 260 °C, 10 s: Requirement The inspection shall be carried out under adequate method 1 with modified conditions for light with normal eyesight or lead-free solder alloys: 245 °C, 3 s: with the assistance of a After dipping the terminals to a depth of magnifier capable of giving approximately 3 mm from the body in a a magnification of 4 to soldering bath of 245 °C for 3 s, the 10 times. The dipped terminals shall be visually examined. surface shall be covered with a smooth and bright solder coating with no more than small amounts of scattered imperfections such as pinholes or un-wetted or de-wetted areas. These imperfections shall not be concentrated in one area. |∆V/V (1 mA)| ≤5% No visible damage Each lead shall be dipped into a solder bath having a temperature of 260 ±5 °C to a point 2.0 to 2.5 mm from the body of the specimen, be held there for 10 ±1 s and then be stored at room temperature and normal humidity for 1 to 2 h. The change of VV shall be measured and the specimen shall be visually examined. Tensile strength IEC 60068-2-21, test Ua1 |∆V/V (1 mA)| ≤5% After gradually applying the force specified below and keeping the unit fixed for 10 s, the terminal shall be visually examined for any damage. No break of solder joint, no wire break Force for wire diameter: 0.6 mm = 10 N 0.8 mm = 10 N 1.0 mm = 20 N Please read Cautions and warnings and Important notes at the end of this document. Page 8 of 25 Leaded varistors B722* EnergetiQ series Test Test methods/conditions Requirement Vibration IEC 60068-2-6, test Fc, method B4 Frequency range: 10 … 55 Hz Amplitude: 0.75 mm or 98 m/s2 Duration: 6 h (3 · 2 h) Pulse: sine wave After repeatedly applying a single harmonic vibration according to the table above. The change of VV shall be measured and the specimen shall be visually examined. |∆V/V (1 mA)| ≤5% IEC 60068-2-29, test Eb Pulse duration: 6 ms Max. acceleration: 400 m/s2 Number of bumps: 4000 Pulse: half sine IEC 60695-11-5 (needle flame test) |∆V/V (1 mA)| ≤5% Bump Fire hazard Severity: vertical 10 s Note: UCT = Upper category temperature LCT = Lower category temperature Rins = Insulation resistance Please read Cautions and warnings and Important notes at the end of this document. Page 9 of 25 No visible damage No visible damage 5 s max. Leaded varistors B722* EnergetiQ series v/i characteristics v = f (i) - for explanation of the characteristics refer to "General technical information", 1.6.3 A = Leakage current, B = Protection level } for worst-case varistor tolerances SIOV-Q14 ... Please read Cautions and warnings and Important notes at the end of this document. Page 10 of 25 Leaded varistors B722* EnergetiQ series v/i characteristics v = f (i) - for explanation of the characteristics refer to "General technical information", 1.6.3 A = Leakage current, B = Protection level } for worst-case varistor tolerances SIOV-Q20 ... Please read Cautions and warnings and Important notes at the end of this document. Page 11 of 25 Leaded varistors B722* EnergetiQ series Derating curves Maximum surge current imax = f (tr, pulse train) For explanation of the derating curves refer to "General technical information", section 1.8.1 SIOV-Q14K130 ... K320 SIOV-Q14K350 ... K460 Please read Cautions and warnings and Important notes at the end of this document. Page 12 of 25 Leaded varistors B722* EnergetiQ series Derating curves Maximum surge current imax = f (tr, pulse train) For explanation of the derating curves refer to "General technical information", section 1.8.1 SIOV-Q20K130 ... K320 SIOV-Q20K350 ... K460 Please read Cautions and warnings and Important notes at the end of this document. Page 13 of 25 Leaded varistors B722* EnergetiQ series Taping, packaging and lead configuration 1 EPCOS ordering code system For leaded varistors B722 10 S 2 271 K Monolithic varistor Nominal disc diameter Design: S = Leaded varistor T = ThermoFuse F = Fail-safe varistor Q = EnergetiQ Series: 0 = StandarD 1 = Automotive 2 = AdvanceD 3 = SuperioR 4 = SuperioR Max. AC operating voltage: 271 = 27 101 = 275 VAC 140 = 14 100 = 14 VAC 141 = 14 101 = 140 VAC Tolerance of varistor voltage: K = ±10% J = ±5% S = Special tolerance Lead configuration: 1 = Straight leads 2 thru 5 = Kinked form Packaging: 0 = Bulk, 1 thru 7 = Taping style Internal coding: 1 = Standard Please read Cautions and warnings and Important notes at the end of this document. Page 14 of 25 1 0 1 Leaded varistors B722* EnergetiQ series 2 Taping and packaging of leaded varistors Tape packaging for lead spacing = 5 fully conforms to IEC 60286-2, while for lead spacings = 7.5 and 10 the taping mode is based on this standard. 2.1 Taping in accordance with IEC 60286-2 for lead spacing 5.0 mm 2.2 Taping based on IEC 60286-2 for lead spacing 7.5 and 10 mm Please read Cautions and warnings and Important notes at the end of this document. Page 15 of 25 Leaded varistors B722* EnergetiQ series 2.3 Tape dimensions (in mm) Symbol w = 5.0 Tolerance th = 7.5 Tolerance = 10.0 Tolerance max. max. max. max. max. max. d P0 0.6 12.7 ±0.05 ±0.3 0.8 12.71) P1 F ∆h ∆p 3.85 5.0 0 0 ±0.7 +0.6/0.1 ±2.0 ±1.3 8.95 ±0.8 7.5 ±0.8 depends on s 0 ±2.0 W W0 18.0 5.5 ±0.5 min. 18.0 11.0 ±0.5 min. 18.0 11.0 ±0.5 min. W1 W2 H H0 9.0 3.0 18.0 16.0 (18.0) 32.2 4.0 0.9 11.0 4.0 ±0.5 max. +2.0/0 ±0.5 9.0 3.0 18.0 16.0 (18.0) 45.0 4.0 0.9 11.0 +0.75/0.5 max. +2.0/0 ±0.5 9.0 3.0 18.0 16.0 +0.75/0.5 max. +2.0/0 ±0.5 max. ±0.2 max. max. 45.0 4.0 0.9 11.0 max. ±0.2 max. max. H1 D0 t L l max. ±0.2 max. max. max. ±0.05 ±0.3 1.0 12.7 7.7 ±0.8 10.0 ±0.8 depends on s 0 ±2.0 1) Taping with P0 = 15.0 mm upon request 2) Applies only to uncrimped types 3) Applies only to crimped types (H0 = 18 upon request) Please read Cautions and warnings and Important notes at the end of this document. ±0.05 ±0.3 Page 16 of 25 Remarks see tables in each series under "Dimensions" ±1 mm/20 sprocket holes measured at top of component body Peel-off force > 5 N 2) 3) without lead Leaded varistors B722* EnergetiQ series 2.4 Taping mode Example: B72210S0271K1 5 1 | Digit 14 Digit 14 Taping Reel type mode Seating plane height H0 for crimped types mm 0 Bulk 1 G I 16 2 G2 I 18 3 G3 II 16 4 G4 II 18 5 G5 III 16 6 GA Ammo pack 16 7 G2A Ammo pack 18 Internal coding for special taping G6 III 18 G10 II 16 G11 II 18 G10A Ammo pack 16 G11A Ammo pack 18 Please read Cautions and warnings and Important notes at the end of this document. Page 17 of 25 Seating plane height H for uncrimped types mm 18 18 18 18 Pitch distance P0 mm 12.7 12.7 12.7 12.7 12.7 12.7 12.7 18 18 12.7 15.0 15.0 15.0 15.0 Leaded varistors B722* EnergetiQ series 2.5 Reel dimension Dimensions (in mm) Reel type I II III d 360 max. 360 max. 500 max. f 31 ±1 31 ±1 23 ±1 n approx. 45 approx. 55 approx. 59 w 54 max. 64 max. 72 max. If reel type III is not compatible with insertion equipment because of its large diameter, nominal disk diameter 10 mm and 14 mm can be supplied on reel II upon request (taping mode G3). 2.6 Ammo pack dimensions Please read Cautions and warnings and Important notes at the end of this document. Page 18 of 25 Leaded varistors B722* EnergetiQ series 3 Lead configuration Straight leads are standard for disk varistors. Other lead configurations as crimp style or customer-specific lead wire length according to 3.1, 3.2, 3.3 and 3.4 are optional. Crimped leads (non-standard) are differently crimped for technical reasons; the individual crimp styles are denoted by consecutive numbers (S, S2 through S5) as shown in the dimensional drawings below. The crimp styles of the individual types can be seen from the type designation in the ordering tables. 3.1 Crimp style mode Example: B72210S0271K 5 01 | Digit 13 Digit 13 of ordering code Crimp style Figure 1 Standard, straight leads 1 2 S2 2 3 S3 3 4 S4 4 5 S5 5 6 Available upon request Internal coding 3.2 Standard leads and non-standard crimp styles Standard, straight leads Non-standard, crimp style S2 Non-standard, crimp style S3 Figure 1 Figure 2 Figure 3 Please read Cautions and warnings and Important notes at the end of this document. Page 19 of 25 Leaded varistors B722* EnergetiQ series Non-standard, crimp style S4 Non-standard, crimp style S5 Figure 4 Figure 5 3.3 Component height (hmax) for crimped versions (non-standard) Due to technical reasons the component height (hmax) increases if a crimp is added. The maximum height of the crimped component can be found in the table below. Nominal diameter mm 5 5 VRMS V 11 ... 175 210 ... 460 Crimp style S2 S3 5.0 5.0 hmax mm 10.0 10.0 11 ... 175 210 ... 460 S2 S3 5.0 5.0 12.0 12.0 10 10 10 10 10 10 10 11 ... 300 320 ... 460 510 Automotive Automotive (D1 types) 11 ... 175 210 ... 460 S5 S3/S5 S3/S5 S5 S5 S4 S3 7.5 7.5 7.5 7.5 7.5 5.0 5.0 15.5 16.5 17.5 17.0 16.0 16.5 16.5 14 14 14 14 14 11 ... 300 320 ... 460 510 Automotive Automotive (D1 types) S5 S3/S5 S3/S5 S5 S5 7.5 7.5 7.5 7.5 7.5 20.0 20.0 21.5 21.0 20.0 20 20 11 ... 320 385 ... 510 S5 S5 10.0 10.0 27.0 27.5 7 7 Please read Cautions and warnings and Important notes at the end of this document. mm Page 20 of 25 Leaded varistors B722* EnergetiQ series 3.4 Trimmed leads (non-standard) Varistors with cut leads available upon request. Lead length tolerances: Straight leads Crimped leads Minimum lead length +/1.0 mm +/0.8 mm 3.5 mm Figure 6 Please read Cautions and warnings and Important notes at the end of this document. Page 21 of 25 Leaded varistors B722* EnergetiQ series Cautions and warnings General 1. EPCOS metal oxide varistors are designed for specific applications and should not be used for purposes not identified in our specifications, application notes and data books unless otherwise agreed with EPCOS during the design-in-phase. 2. Ensure suitability of SIOVs through reliability testing during the design-in phase. SIOVs should be evaluated taking into consideration worst-case conditions. 3. For applications of SIOVs in line-to-ground circuits based on various international and local standards there are restrictions existing or additional safety measures required. Storage 1. Store SIOVs only in original packaging. Do not open the package before storage. 2. Storage conditions in original packaging: Storage temperature: 25 °C ... +45 °C, Relative humidity: <75% annual average, <95% on maximum 30 days a year. Dew precipitation: is to be avoided. 3. Avoid contamination of an SIOV's during storage, handling and processing. 4. Avoid storage of SIOVs in harmful environments that can affect the function during long-term operation (examples given under operation precautions). 5. The SIOV type series should be soldered within the time specified: SIOV-S, -Q, -LS, -B, -SFS 24 months ETFV 12 months. Handling 1. SIOVs must not be dropped. 2. Components must not be touched with bare hands. Gloves are recommended. 3. Avoid contamination of the surface of SIOV electrodes during handling, be careful of the sharp edge of SIOV electrodes. Soldering (where applicable) 1. Use rosin-type flux or non-activated flux. 2. Insufficient preheating may cause ceramic cracks. 3. Rapid cooling by dipping in solvent is not recommended. 4. Complete removal of flux is recommended. Please read Cautions and warnings and Important notes at the end of this document. Page 22 of 25 Leaded varistors B722* EnergetiQ series Mounting 1. Potting, sealing or adhesive compounds can produce chemical reactions in the SIOV ceramic that will degrade the component’s electrical characteristics. 2. Overloading SIOVs may result in ruptured packages and expulsion of hot materials. For this reason SIOVs should be physically shielded from adjacent components. Operation 1. Use SIOVs only within the specified temperature operating range. 2. Use SIOVs only within the specified voltage and current ranges. 3. Environmental conditions must not harm SIOVs. Use SIOVs only in normal atmospheric conditions. Avoid use in deoxidizing gases (chlorine gas, hydrogen sulfide gas, ammonia gas, sulfuric acid gas etc), corrosive agents, humid or salty conditions.Contact with any liquids and solvents should be prevented. Please read Cautions and warnings and Important notes at the end of this document. Page 23 of 25 Leaded varistors B722* EnergetiQ series Symbols and terms Symbol Term C Capacitance Ctyp Typical capacitance i Current ic Current at which Vc, max is measured Ileak Leakage current imax Maximum surge current (also termed peak current) Imax Maximum discharge current to IEC 61643-1 Inom Nominal discharge current to IEC 61643-1 LCT Lower category temperature Ltyp Typical inductance Pmax Maximum average power dissipation Rins Insulation resistance Rmin Minimum resistance TA Ambient temperature tr Duration of equivalent rectangular wave UCT Upper category temperature v Voltage Vclamp Clamping voltage vc, max Maximum clamping voltage at specified current ic VDC DC operating voltage Vjump Maximum jump start voltage vmax Maximum voltage Vop Operating voltage VRMS AC operating voltage, root-mean-square value VRMS, op, max Root-mean-square value of max. DC operating voltage incl. ripple current Vsurge Super imposed surge voltage VV Varistor voltage ∆VV Tolerance of varistor voltage WLD Maximum load dump Wmax Maximum energy absorption Lead spacing All dimensions are given in mm. The commas used in numerical values denote decimal points. Please read Cautions and warnings and Important notes at the end of this document. Page 24 of 25 Important notes The following applies to all products named in this publication: 1. Some parts of this publication contain statements about the suitability of our products for certain areas of application. These statements are based on our knowledge of typical requirements that are often placed on our products in the areas of application concerned. We nevertheless expressly point out that such statements cannot be regarded as binding statements about the suitability of our products for a particular customer application. As a rule, EPCOS is either unfamiliar with individual customer applications or less familiar with them than the customers themselves. For these reasons, it is always ultimately incumbent on the customer to check and decide whether an EPCOS product with the properties described in the product specification is suitable for use in a particular customer application. 2. We also point out that in individual cases, a malfunction of electronic components or failure before the end of their usual service life cannot be completely ruled out in the current state of the art, even if they are operated as specified. In customer applications requiring a very high level of operational safety and especially in customer applications in which the malfunction or failure of an electronic component could endanger human life or health (e.g. in accident prevention or lifesaving systems), it must therefore be ensured by means of suitable design of the customer application or other action taken by the customer (e.g. installation of protective circuitry or redundancy) that no injury or damage is sustained by third parties in the event of malfunction or failure of an electronic component. 3. The warnings, cautions and product-specific notes must be observed. 4. In order to satisfy certain technical requirements, some of the products described in this publication may contain substances subject to restrictions in certain jurisdictions (e.g. because they are classed as hazardous). Useful information on this will be found in our Material Data Sheets on the Internet (www.epcos.com/material). Should you have any more detailed questions, please contact our sales offices. 5. We constantly strive to improve our products. Consequently, the products described in this publication may change from time to time. The same is true of the corresponding product specifications. Please check therefore to what extent product descriptions and specifications contained in this publication are still applicable before or when you place an order. We also reserve the right to discontinue production and delivery of products. Consequently, we cannot guarantee that all products named in this publication will always be available. The aforementioned does not apply in the case of individual agreements deviating from the foregoing for customer-specific products. 6. Unless otherwise agreed in individual contracts, all orders are subject to the current version of the "General Terms of Delivery for Products and Services in the Electrical Industry" published by the German Electrical and Electronics Industry Association (ZVEI). 7. The trade names EPCOS, BAOKE, Alu-X, CeraDiode, CSMP, CSSP, CTVS, DeltaCap, DigiSiMic, DSSP, FormFit, MiniBlue, MiniCell, MKD, MKK, MLSC, MotorCap, PCC, PhaseCap, PhaseCube, PhaseMod, PhiCap, SIFERRIT, SIFI, SIKOREL, SilverCap, SIMDAD, SiMic, SIMID, SineFormer, SIOV, SIP5D, SIP5K, ThermoFuse, WindCap are trademarks registered or pending in Europe and in other countries. Further information will be found on the Internet at www.epcos.com/trademarks. Page 25 of 25