Product division: NTC Product name: Inrush Current Limiter Product type:S234/xxx/M Ordering code:B57234S0xxxM000 Data sheet APPLICATION : NTC-thermistor for inrush current limiting in peripheral communication equipment, e.g. in switch-mode power supplies FEATURES : * Black coated thermistor disk * Coating material is flame retardant (UL 94 V-0 approved) * Kinked leads of tinned copper wire * Lead spacing 7.5 mm * Manufacturer's logo, NTC and resistance value stamped in white * High stability of electrical characteristic * Terminals solderable in accordance with IEC 60068-2-20, test ta, method 1 * ICL support to fulfill the requirements according EN 61000 of power circuits * Usable in series connections up to 265 Vrms * UL approval (E 69802) * The component is compliant with ROHS (DIRECTIVE 2002/95/EC OF THE EUROPEAN PARLIAMENT AND THE COUNCIL of 27 January 2003 on the restriction of the use of certain hazardous substances in electrical and electronic equipment * Also available on tape EPCOS AG 2005. Reproduction, publication and dissemination of this data sheet, enclosures hereto and the information contained therein without EPCOS' prior express consent is prohibited. Purchase orders are subject to the General Conditions for the Supply of Products and Services of the Electrical and Electronics Industry recommended by the ZVEI (German Electrical and Electronic Manufacturers' Association), unless otherwise agreed. ISSUE DATE 11.05.05 ISSUE b PUBLISHER KB S PE PAGE 1/19 Product division: NTC Product name: Inrush Current Limiter Product type:S234/xxx/M Ordering code:B57234S0xxxM000 Data sheet DRAWING : b h th LL LS b 15.0max mm th 7.0 max mm h LL LD LS 22.0 max +3 32 mm mm mm mm 0.05 0.8 0.8 7.5 Approx. weight : 2.0 [g] LD RATINGS AND CHARACTERISTICS Lower/upper category temperature Resistance tolerance Rated temperature B value tolerance Max. power at 25C Dissipation factor (in air) Thermal cooling time constant (in air) Heat capacity T R/RN TN B/B Pmax th th Cth R25 Imax B25/100 [] 1.0 2.2 2.5 4.7 5.0 7.0 10 15 22 33 [A] 11.5 9.0 8.4 6.6 6.4 6.0 5.0 4.0 4.0 3.3 [K] 2600 2800 2800 2900 2900 3000 3060 3000 3300 3300 ISSUE DATE 11.05.05 ISSUE -55/+170 20 25 3 3.6 approx. 17 approx. 90 approx. 1530 CT at 110 CT at 230 Parameter Parameter VAC VAC for R(I) for R(I) k n [F] [F] 2800 700 0.622 -1.27 2800 700 0.806 -1.30 2000 500 0.843 -1.30 2800 700 1.03 -1.32 2800 700 1.05 -1.32 2800 700 1.16 -1.33 2800 700 1.29 -1.34 2800 700 1.49 -1.33 2800 700 1.57 -1.37 3600 900 1.78 -1.37 Ordering Code B57234S0109M000 B57234S0229M000 B57234S0259M000 B57234S0479M000 B57234S0509M000 B57234S0709M000 B57234S0100M000 B57234S0150M000 B57234S0220M000 B57234S0330M000 [C] [%] [C] [%] [W] [mW/K] [s] [mJ/K] b PUBLISHER KB S PE PAGE 2/19 Product division: NTC Product name: Inrush Current Limiter Product type:S234/xxx/M Ordering code:B57234S0xxxM000 Data sheet Maximum continuous current Imax : The Imax denotes the maximum permissable continuous current (dc or rms values for sine-shaped ac) in the temperature range 0 to 65C. Maximum current derating (I / Imax) : I / Imax Percent of Imax = 100 1 - 1 TA - 65 C Tmax - 65 C TA = ambient temperature ( TA > 65C ) Tmax = 170C -25 0 170 65 Ta Fig. 1. - Maximum current derating (I / Imax ) Maximum switchable capacity (CT) : The maximum switchable capacity (CT) is the maximum capacity which may be discharged across the thermistor. See Fig.2 Maximum switchable capacity measuring circuit. Dependence of NTC resistance on current : The resistance effective in the usual current range can be approximated with the fit parameter k and n. 0.3 * I max < I I max RNTC = k * In RNTC k, n I Resistance value to be determined at current I [] Fit parameter, see table with ordering codes Current flowing through the NTC (insert numerical value in A) The calculated values only serve as an estimate for operation in still air at an ambient temperature of 25C. MARKING : * * * * EPCOS - logo resistance value NTC Date code with 4 digits (year and week of production): 0540 (example for week 40 in year 2005) ISSUE DATE 11.05.05 ISSUE b PUBLISHER KB S PE PAGE 3/19 Product division: NTC Product name: Inrush Current Limiter Product type:S234/xxx/M Ordering code:B57234S0xxxM000 Data sheet Resistance - Temperature Curve 100.00 B57234S0109Mxxx Resistance [Ohm] 10.00 1.00 0.10 0.01 -50.00 -25.00 0.00 25.00 50.00 75.00 100.00 125.00 150.00 175.00 Temperature [C] ISSUE DATE 11.05.05 ISSUE b PUBLISHER KB S PE PAGE 4/19 Product division: NTC Product name: Inrush Current Limiter Product type:S234/xxx/M Ordering code:B57234S0xxxM000 Data sheet Resistance - Temperature Curve 100.00 B57234S0229Mxxx Resistance [Ohm] 10.00 1.00 0.10 0.01 -50.00 -25.00 0.00 25.00 50.00 75.00 100.00 125.00 150.00 175.00 Temperature [C] ISSUE DATE 11.05.05 ISSUE b PUBLISHER KB S PE PAGE 5/19 Product division: NTC Product name: Inrush Current Limiter Product type:S234/xxx/M Ordering code:B57234S0xxxM000 Data sheet Resistance - Temperature Curve 100.00 B57234S0259Mxxx Resistance [Ohm] 10.00 1.00 0.10 -50.00 -25.00 0.00 25.00 50.00 75.00 100.00 125.00 150.00 175.00 Temperature [C] ISSUE DATE 11.05.05 ISSUE b PUBLISHER KB S PE PAGE 6/19 Product division: NTC Product name: Inrush Current Limiter Product type:S234/xxx/M Ordering code:B57234S0xxxM000 Data sheet Resistance - Temperature Curve 1,000.00 B57234S0479Mxxx Resistance [Ohm] 100.00 10.00 1.00 0.10 -50.00 -25.00 0.00 25.00 50.00 75.00 100.00 125.00 150.00 175.00 Temperature [C] ISSUE DATE 11.05.05 ISSUE b PUBLISHER KB S PE PAGE 7/19 Product division: NTC Product name: Inrush Current Limiter Product type:S234/xxx/M Ordering code:B57234S0xxxM000 Data sheet Resistance - Temperature Curve 1,000.00 B57234S0509Mxxx Resistance [Ohm] 100.00 10.00 1.00 0.10 -50.00 -25.00 0.00 25.00 50.00 75.00 100.00 125.00 150.00 175.00 Temperature [C] ISSUE DATE 11.05.05 ISSUE b PUBLISHER KB S PE PAGE 8/19 Product division: NTC Product name: Inrush Current Limiter Product type:S234/xxx/M Ordering code:B57234S0xxxM000 Data sheet Resistance - Temperature Curve 1,000.00 B57234S0709Mxxx Resistance [Ohm] 100.00 10.00 1.00 0.10 -50.00 -25.00 0.00 25.00 50.00 75.00 100.00 125.00 150.00 175.00 Temperature [C] ISSUE DATE 11.05.05 ISSUE b PUBLISHER KB S PE PAGE 9/19 Product division: NTC Product name: Inrush Current Limiter Product type:S234/xxx/M Ordering code:B57234S0xxxM000 Data sheet Resistance - Temperature Curve 1,000.00 B57234S0100Mxxx Resistance [Ohm] 100.00 10.00 1.00 0.10 -50.00 -25.00 0.00 25.00 50.00 75.00 100.00 125.00 150.00 175.00 Temperature [C] ISSUE DATE 11.05.05 ISSUE b PUBLISHER KB S PE PAGE 10/19 Product division: NTC Product name: Inrush Current Limiter Product type:S234/xxx/M Ordering code:B57234S0xxxM000 Data sheet Resistance - Temperature Curve 1,000.00 B57234S0150Mxxx Resistance [Ohm] 100.00 10.00 1.00 0.10 -50.00 -25.00 0.00 25.00 50.00 75.00 100.00 125.00 150.00 175.00 Temperature [C] ISSUE DATE 11.05.05 ISSUE b PUBLISHER KB S PE PAGE 11/19 Product division: NTC Product name: Inrush Current Limiter Product type:S234/xxx/M Ordering code:B57234S0xxxM000 Data sheet Resistance - Temperature Curve 1,000.00 B57234S0220Mxxx Resistance [Ohm] 100.00 10.00 1.00 0.10 -50.00 -25.00 0.00 25.00 50.00 75.00 100.00 125.00 150.00 175.00 Temperature [C] ISSUE DATE 11.05.05 ISSUE b PUBLISHER KB S PE PAGE 12/19 Product division: NTC Product name: Inrush Current Limiter Product type:S234/xxx/M Ordering code:B57234S0xxxM000 Data sheet Resistance - Temperature Curve 1,000.00 B57234S0330Mxxx Resistance [Ohm] 100.00 10.00 1.00 0.10 -50.00 -25.00 0.00 25.00 50.00 75.00 100.00 125.00 150.00 175.00 Temperature [C] ISSUE DATE 11.05.05 ISSUE b PUBLISHER KB S PE PAGE 13/19 Product division: NTC Product name: Inrush Current Limiter Product type:S234/xxx/M Ordering code:B57234S0xxxM000 Data sheet ROBUSTNESS OF TERMINATIONS : The leads meet the requirements of IEC 60068-2-21. Test Test conditions Remarks Tensile strength Test Ua1: Fasten body with a force applied to each lead 10 [N] for 10 [s] No visible damage Bending strength Test Ub: Fasten body with two 90-bends in opposite direction at a force of 10 [N] No visible damage (Peel off of coating along the lead accepted) RELIABILITY REQUIREMENTS : R25/R25 (typical) Remarks Storage at upper category temperature T: 170C t: 1 000 h < 10 % No visible damage Temperature of air: 40C Relative humidity of air: 93 % Duration: 21 days <5% No visible damage Lower test temperature: -55C (time: 15 min) Upper test temperature: 170C (time: 15 min) Time to change from lower to upper temperature : < 30 sec Number of cycles: 10 < 10 % No visible damage Endurance (storage at max. current) I = Imax t = 1000 h T = 25C < 10 % No visible damage Electrical cycling test * I = Imax load on: 1 min load off: 6 min Number of cycles: 1000 < 10 % No visible damage Maximum switchable capacity test ** Capacity = CT Number of cycles: 1000 <5% No visible damage Test Storage in dry heat Storage in damp heat, steady state Rapid change of temperature ISSUE DATE Standard IEC 60068-2-2 IEC 60068-2-3 IEC 60068-2-14 11.05.05 Test conditions ISSUE b PUBLISHER KB S PE PAGE 14/19 Product division: NTC Product name: Inrush Current Limiter Product type:S234/xxx/M Ordering code:B57234S0xxxM000 Data sheet Soldering of Components Process Soldering Conditions Remarks Dip soldering : 260C max, 4 sec max, 6mm min from thermistor body Iron soldering : 360C max, 2 sec max, 6 mm min from thermistor body Low resistance drift * Electrical cycling Test Each cycle has to start with parts cooled down to room temperature. It has to cover the portion of the R/T curve between room temperature and the resistance of the components as stabilized at the maximum continous current Imax (that is the minimum operating resistance). One cycle lasts 7 minutes. ** Maximum switchable capacity test The capacitor (CT) is discharged across a series fixed resistor and the thermistor, shown in Figure 2. The charge voltage is chosen so that the voltage applied to the thermistor at the beginning of discharge is 170/345 [V], corresponding to (110/230V+V)*1.41. The capacitor is discharged across a series fixed resistor and the thermistor 1 000 times at ambient temperature of between 15C and 35C. Each cycle has to start with thermistors cooled down to ambient temperature. VL CT V L ... Load voltage RS = 1 Ohm C ... Test capacitance T R S ... Fixed resistance VNTC ... Voltage drop across the NTC RNTC VNTC VNTC = 170/345 V (corresponds (110/230 V + dV) x 1.41) Fig. 2. - Maximum switchable capacity measuring circuit TAPING AND PACKING : Packing codes : The last two digits of the complete ordering code state the packing mode : Packing Code Number of Pieces Bulk packing Bulk 00 500 Reel packing Tape 51 1000 AMMO packing Tape 54 750 ISSUE DATE 11.05.05 ISSUE b PUBLISHER KB S PE PAGE 15/19 Product division: NTC Product name: Inrush Current Limiter Product type:S234/xxx/M Ordering code:B57234S0xxxM000 Data sheet Example : B57234S0100M000 B57234S0100M051 untaped taped reel packing Table 1: Package dimensions and weights of unit packages Packing Bulk Ammo Reel Pcs / unit Approx. Weight (g) Dimensions (mm) 500 1100 x=65, y=230, z=125 750 2100 x=56, y=355, z=355 1000 2500 d=500, f=231, n=approx. 59, w=72 max Dimensions x, y, z acc. to fig. 1 Dimensions d, f, n, w acc. to fig. 2 Drawings Fig. 1: AMMO packing Fig. 2: Reel packing ISSUE DATE 11.05.05 ISSUE b PUBLISHER KB S PE PAGE 16/19 Product division: NTC Product name: Inrush Current Limiter Product type:S234/xxx/M Ordering code:B57234S0xxxM000 Data sheet Shipping package Table 2: Dimensions and weights of shipping package. BULK Dimensions LxWxH (mm) 330x230x100 260x180x190 360x360x130 370x270x270 354x354x274 Pcs/package 1000 1500 4000 6000 7500 AMMO Approx. Weight (kg) 3.1 4.3 11.5 16.8 21.2 Dimensions LxWxH (mm) 354x354x58 354x354x112 354x354x166 354x354x220 354x354x274 Pcs/package 750 1500 2250 3000 3750 Approx. Weight (kg) 2.6 4.8 7.0 9.2 11.4 REEL Dimensions LxWxH (mm) 505x505x74 505x505x220 505x505x360 Pcs/package 1000 3000 5000 Approx. Weight (kg) 3.5 9.8 15.7 L x W x H acc. to fig. 3. Drawing Label of box Fig. 3: Shipping Package Packing material: Cardboard box ISSUE DATE 11.05.05 ISSUE b PUBLISHER KB S PE PAGE 17/19 Product division: NTC Product name: Inrush Current Limiter Product type:S234/xxx/M Ordering code:B57234S0xxxM000 Data sheet Label The shown label is an example for bulk packing. Type code and ordering code do not refer to the actual type. Internal Construction Ceramic Coating Metallization Solder joint The above picture shows the internal construction of EPCOS ICL's. Note: Coating may have cracks or chips due to acting mechanical force on the wire, but this does not affect the performance of the component ISSUE DATE 11.05.05 ISSUE b PUBLISHER KB S PE PAGE 18/19 Product division: NTC Product name: Inrush Current Limiter Product type:S234/xxx/M Ordering code:B57234S0xxxM000 Data sheet Taping specification : Dimensions and tolerances (taping in accordance with IEC 60286-2) : Designation Symbol Nominal size [mm] Tolerance [mm] Lead Spacing F 7.5 0.8 Pitch of holes P0 12.7 0.3 Spacing hole center P1 8.95 0.8 Slope of component h 0 2.0 Slope of component p 0 2.0 H 18.0 +2.0/-0 H0 16.0 0.5 H1 45.0 max. W 18.0 0.5 hot adhesive tape width W0 5.5 min. position of holes W1 9.0 +0.75/-0.5 position of adhesive tape W2 3.0 max. hole diameter D0 4.0 0.2 tape thickness t 0.9 max. length of remaining wire after removal of component L 11.0 max. Spacing hole center / bottom edge of component Spacing hole center / niveau NTC Spacing hole center / upper edge of component carrier type width ISSUE DATE 11.05.05 ISSUE b PUBLISHER Remarks 1 mm/20 sprocket holes measured at top of component body peel-off force 5 N without wires KB S PE PAGE 19/19