VAR-18080077M3P-XK

Ring Varistors For micro-motors VAR-18 series Type: VAR-18-P (Plane surface electrode type) VAR-18-S (Side surface electrode type) Issue date: December 2010 • All specifications are subject to change without notice. • Conformity to RoHS Directive: This means that, in conformity with EU Directive 2002/95/EC, lead, cadmium, mercury, hexavalent chromium, and specific bromine-based flame retardants, PBB and PBDE, have not been used, except for exempted applications. (1/2) Varistors(SrTiO3) For Micro-motors Conformity to RoHS Directive VAR-18 Series Ring varistors are used in a wide range of applications from micro motor noise absorption to the protection of circuit contacts. TDK has greatly improved the electrical and physical performances of these varistors to meet the latest demands. This varistor line covers the traditional shapes and dimensions as well as the more varied and specialized applications. FEATURES ELECTRICAL PERFORMANCES • The temperature characteristics of the varistor voltage (E10 value) are positive. This prevents the varistor voltage from decreasing at high temperatures and from large currents flowing through the varistor. Therefore, these varistors remove design obstacles by eliminating the need for setting the room temperature varistor voltage (E10 value) higher—a measure that compromises noise reduction levels. • Furthermore, the VAR-18 series has also eliminated the problem of the noise level being amplified at low-temperatures and having a negative impact on the life of the motor. • Because the VAR-18 series has the same large capacitance as the conventional varistors, it has excellent functions to eliminate and control motor noise in high frequency bands. PHYSICAL PERFORMANCES • Because copper electrodes are used and the heat resistance of the ceramic elements has been improved, there is no concern for electrode erosion or thermal crack even at the higher soldering temperatures that are used in lead-free soldering. • The ceramic element has excellent flexure strength as is suitable for automatic motor assembly. PRODUCT LINEUP • The varistors in this series come in a wide range of dimensions and so can be accurately used for almost all motors. • This lineup includes side-surface electrode varistors that can be used with ultra-compact micro motors. PRODUCT IDENTFICATIONS VAR-18 (1) (2) (3) (4) (5) (6) – (7) (1) Series name (2) Outer diameter 080: ø8mm 107: ø10.7mm (3) Varistor voltage 053: 5.3V 157: 15.7V (4) Varistor voltage tolerance M: ±20% (5) Number of electrodes 3, 5, 7 (6) Electrode location P: Plane S: Side (7)TDK classification PERFORMANCES Operating temperature range Pulse resistance [DC.60V, ON-OFF: 50 cycles] Moisture resistance [60±2°C, 90 to 95(%)RH, 240 hours] Soldering heat resistance [320°C, 3 seconds] Flexure strength Electrode tensile strength –25 to +85°C ∆E10,∆α10±15% ∆E10,∆α10±10% ∆E10,∆α10±10% 9.8N min. 14.7N min. ∆E10(%) VARISTOR VOLTAGE TEMPERATURE CHARACTERISTICS 20 10 VAR-18 0 –40 –20 20 40 60 Temperature(°C) 0 80 –10 –20 • Conformity to RoHS Directive: This means that, in conformity with EU Directive 2002/95/EC, lead, cadmium, mercury, hexavalent chromium, and specific bromine-based flame retardants, PBB and PBDE, have not been used, except for exempted applications. • All specifications are subject to change without notice. 001-02 / 20101125 / e9c12_var.fm (2/2) SHAPES AND DIMENSIONS PLANE SURFACE ELECTRODE TYPE(3-ELECTRODE) PLANE SURFACE ELECTRODE TYPE(5-ELECTRODE) Ring-shaped resistor Electrode Ring-shaped resistor Electrode T max. øD2 øD1 Diameter Symbol 024 030 030 042 048 060 066 080 085 085 094 107 120 160 Dimensions(mm) øD1 2.45±0.1 3.0±0.15 3.0±0.12 4.2±0.15 4.8+0.1, –0.2 6.0±0.2 6.6±0.2 8.0±0.3 8.5±0.2 8.5±0.3 9.4±0.3 10.7+0.2, –0.35 12.0+0.4, –0.1 16.0±0.4 øD2 1.78±0.08 2.0±0.1 2.15±0.1 2.8+0.2, –0.1 3.5+0.2, –0.1 4.0+0.2, –0.1 4.7±0.15 5.0±0.2 5.0±0.2 5.8±0.15 5.78±0.15 6.7+0.25, –0.1 7.5±0.2 9.4±0.3 T max. 0.50 0.50 0.50 0.60 0.60 0.70 0.75 0.75 0.75 0.75 1.05 1.10 1.10 1.70 Number of electrodes 3 3 3 3 3 3 3 3 3 3 3 3 3 or 5 5 SIDE SURFACE ELECTRODE TYPE(3-ELECTRODE) SIDE SURFACE ELECTRODE TYPE(6-ELECTRODE) Ring-shaped resistor Ring-shaped resistor Electrode Electrode øD2 øD2 T max. 042 066 076 078 086 T max. øD1 øD1 Diameter Symbol T max. øD2 øD1 Dimensions(mm) øD1 4.2±0.15 6.6±0.2 7.6±0.2 7.8±0.2 8.6±0.2 øD2 2.85+0.2, –0.1 4.7±0.15 5.0±0.2 5.35±0.2 5.0±0.2 T max. 0.60 0.60 0.60 0.65 0.75 Number of electrodes 3 3 or 6 3 or 6 3 3 ELECTRICAL CHARACTERISTICS (EXAMPLE: OD ø10.7mm type) Varistor voltage Tolerance Nominal varistor voltage E10mA (V) α10[1 to 10mA] Rated power (mW) 032Y 053M 077M 115M 157M 218M 240M 320M 2.0 to 4.5 4.0 to 6.6 5.9 to 9.4 9.0 to 14.0 13.0 to 18.4 17.6 to 26.0 19.0 to 29.0 26.0 to 38.0 2.3 2.3 2.3 2.3 2.3 2.3 2.3 2.3 500 500 500 500 500 500 500 500 Varistor voltage temperature coefficient (%/°C) [25 to 50°C] ±0.2 ±0.2 ±0.2 ±0.2 ±0.2 ±0.2 ±0.2 ±0.2 Capacitance (nF) [at 1kHz] 1 to 100 1 to 100 1 to 100 1 to 100 1 to 100 1 to 100 1 to 100 1 to 100 • All specifications are subject to change without notice. 001-02 / 20101125 / e9c12_var.fm