speci cations which provide more details for the proper and safe use of the described product are available upon request. all speci cations are subject to change without notice. 6357_plt_plc (1/3) transformers plt, plc series for power supply smd features tdk has optimized the characteristics of ferrite cores for high frequency operation and has designed multilayer printed coils with optimized pattern designs. this has resulted in low insertion loss and low leakage inductance. the plt and plc series attains high ef?iency as well as light weight and small size. while only 5mm tall, this miniaturized planar transformer/planar choke coil combination also has a greatly reduced footprint. shielding of the printed coil by the core has greatly reduced noise. while maintaining reliability of the electrical connection between each layer of the printed coil and the l-shaped header terminal, the structure of these plt/plc series products also allows easy checking of soldered connections after board mounting. applications low-pro?e dc to dc converters for exchange switchboard power supplies, low-pro?e dc to dc converters for various types of power supplies(engine control modules, hid lamps). electrical characteristics(typical) planar transformers * only plt2725hs-001 was evaluated while using an attached aluminum heat sink. planar choke coils specifications design requirements typical circuit part no. input voltage edc (v) output voltage edc (v) output current idc (a) rated output power (w) primary inductance ( m h) primary leakage inductance ( m h) dc resistance (m w ) primary secondary plt1414eir-01 48 5 4 20 200 0.2 150 6 plt1818eir-01 48 5 6 30 90 0.1 35 1.9 plt2322eir-01 48 5 10 50 70 0.07 18 1.6 plt2725eir-01 48 5 20 100 * 60 0.08 15 1.3 part no. dc superposition current (a) inductance ( m h) dc resistance (m w ) plc1414eir-22-01 2 22 19 plc1414rir-15-01 3 15 19 plc1414eir-11-01 4 11 19 plc1818eir-15-01 4 15 16 PLC1818EIR-12-01 5 12 16 plc1818eir-10-01 6 10 16 plc2322eir-9r5-01 8 9.5 15 plc2322eir-7r5-01 10 7.5 15 withstand voltage[ac.500v, 1min] no abnormalities insulation resistance[dc.500v applied] 100m w min. winding thermal classification 105? circuit type forward circuit operating frequency 500khz board aluminum cooling method natural air cooling secondary coil primary coil control coil planar transformer planar choke coil
speci cations which provide more details for the proper and safe use of the described product are available upon request. all speci cations are subject to change without notice. 6357_plt_plc (2/3) transformers plt, plc series for power supply smd shapes and dimensions/recommended pc board patterns plt1414, plc1414 series plt1818, plc1818 series plt2322, plc2322 series plt2725 series recommended soldering conditions reflow solderings 14 0.5 15 0.5 p p p p p p 2 p: 2.54 2 10.95 14 0.5 1 0.1 9.95 3 3 15.95 9.62 2 0.54 5max. 0.25 part no., lot no. 18 0.5 18.8 0.5 p p p p p p p p p p 2 p: 2.54 2 14.8 14.7 2 13.8 3 3 19.8 0.54 18 0.5 1 0.1 0.25 5max. part no., lot no. 23.2 0.5 24.2 0.5 p p p p p p p p 5.08 p p 2 p: 2.54 220 2 19 3 3 25 0.54 22.2 0.5 1 0.1 0.25 5max. 17.24 part no., lot no. 1.6 1.6 29 27 1 32.2 0.25 25 1 1.5 0.1 5max. dimensions in mm 2.5 27.2 3.5 3.5 34.2 0.5 20.5 part no., lot no. 3 3 3 3 3 3 3 3 6 3 3 10s max. 100 to 150? preheating: 60 to 120s 20 5s 240 5? 150? 200 5? 100? time ( s )
6357_plt_plc 000308 speci cations which provide more details for the proper and safe use of the described product are available upon request. all speci cations are subject to change without notice. 6357_plt_plc (3/3) transformers plt, plc series for power supply smd precautions care should be taken since product operation can become impaired under the following circumstances. the product should not be used after undergoing the mechanical stress of being dropped, etc. there are instances when performance can become impaired due to core cracking, etc., even though visual appearance of the prod uct is unaffected. contamination, dust, fog, water droplets, and direct sunlight should be avoided during storage. inappropriate storage conditi ons can result in malfunctioning of the product. operation and storage environments should be avoided that could cause corrosion(chlorine gas, oxygen gas, alkaline, etc. environments). excessive force should not be applied to the product by metal tools, etc. during mounting. furthermore, the product should be kept bare since encasing the product in resin, etc. can possibly result in degradation of the printed coil isolation characteristics and can greatly alter inductance(lower l). the product should be used under appropriate condition. tdk recommends applications utilizing the suggested board pattern. if the product is used under other conditions, the custome r should con?m that no problems result under manufacturing conditions. required re?w conditions greatly depend upon board mounting conditions. therefore re?w conditions must be con?med by testin g. in principle, cleaning should be avoided after mounting. if cleaning is carried out, cleaning conditions should be con rmed b y reliability, etc. testing. temperature rise, isolation, and abnormal conditions. the temperature rise of this product is greatly affecting by board mounting conditions. therefore temperature rise must be co n?med by testing. caution should be used when carrying out insulation resistance testing above the rated voltage since the performance of insula tion can degrade under such conditions. since this product does not have a built-in protective function to counter abnormal conditions such as excess load, short circ uits, open circuits, etc., testing must be carried out to con?m the absence of safety problems.
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