134 05/02 applications switch-mode power supplies features close resistance tolerance, improved insulation voltage useable in series connections up to 265 v rms coated thermistor disk kinked leads of tinned copper wire wide resistance range ul approval (e69802) delivery mode bulk (standard), cardboard tape, reeled or in ammo pack climatic category (iec 60068-1) max. power at 25 c p max resistance tolerance ? r n / r n rated temperature t n b value tolerance ? b / b dissipation factor (in air) th thermal cooling time constant (in air) c heat capacity c th test voltage ( t = 1 s) v t 55/170/56 2,4 15 % 25 3 % approx. 14 approx. 50 approx. 700 1000 w c mw/k s mj/k vdc r 25 ? i max (0 65 c) a no. of r / t char- acteristic b 25/100 k c t 1) 230 v f c t 1) 110 v f parameters for r(i) 1) ordering code kn 2,5 5,5 1201 2700 200 800 0,621 1,27 b57236s0259l002 3,0 5,0 1202 2800 300 1200 0,80 1,31 B57236S0309L002 5,0 4,5 1202 2800 300 1200 0,761 1,30 b57236s0509l002 8,0 3,7 1203 2900 300 1200 1,11 1,34 b57236s0809l002 dimensions in mm approx. weight 1,7 g tnt0413-s ? 11,5 max. 5 6 max. 16 max. ? 0,8 1 36 _ 1) for details on the capacitance c t as well as on the parameters k and n refer to application notes , pages 40 42. b57236 inrush current limiters s236 insulation voltage 1000 vdc for 1 s, ? r n / r n = 15 %
135 05/02 reliability data test standard test conditions ? r 25 / r 25 (typical) remarks storage in dry heat iec 60068-2-2 storage at upper category temperature t : 170 c t : 1000 h < 10 % no visible damage storage in damp heat, steady state iec 60068-2-3 temperature of air: 40 c relative humidity of air: 93 % duration: 21 days < 5 % no visible damage rapid temperature cycling iec 60068-2-14 lower test temperature: 55 c upper test temperature: 170 c number of cycles: 10 < 10 % no visible damage endurance i = i max t : 1000 h < 10 % no visible damage cyclic endurance i = i max , 1000 cycles on-time = 1 min cooling time = 6 min < 10 % no visible damage transient load capacitance = c t number of cycles: 1000 < 5 % no visible damage b57236 inrush current limiters s236 insulation voltage 1000 vdc for 1 s, ? r n / r n = 15 %
herausgegeben von epcos ag unternehmenskommunikation, postfach 80 17 09, 81617 mnchen, deutschland ++49 89 636 09, fax (0 89) 636-2 26 89 ? epcos ag 2002. vervielf?ltigung, ver?ffentlichung, verbreitung und verwertung dieser broschre und ihres inhalts ohne aus- drckliche genehmigung der epcos ag nicht gestattet. bestellungen unterliegen den vom zvei empfohlenen allgemeinen lieferbedingungen fr erzeugnisse und leistungen der elek- troindustrie, soweit nichts anderes vereinbart wird. diese broschre ersetzt die vorige ausgabe. fragen ber technik, preise und lieferm?glichkeiten rich ten sie bitte an den ihnen n?chstgelegenen vertrieb der epcos ag oder an unsere vertriebsgesellschaften im ausland. bauelemente k?nnen aufgrund technischer erfordernisse gefahrstoffe ent- halten. ausknfte darber bitten wir unter angabe des betreffenden typs ebenfalls ber die zust?ndige vertriebsgesellschaft ein - zuholen. published by epcos ag corporate communications, p.o. box 80 17 09, 81617 munich, germany ++49 89 636 09, fax (0 89) 636-2 26 89 ? epcos ag 2002. reproduction, publication and dissemination of this brochure and the information contained therein without epcos? prior express consent is prohibited. purchase orders are subject to the general conditions for the s upply of products and services of the electrical and electronics industry recommended by the zvei (german electrical and el ectronic manufacturers? associ ation), unless otherwise agreed. this brochure replaces the previous edition. for questions on technology, prices and delivery please contact the sales offices of epcos ag or the international representa- tives. due to technical requirements components may contain dangerous substances. for information on the type in question please also contact one of our sales offices.
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