782482 MURATA-PS | Alldatasheet
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KMP_782482C_A01 Page 1 of 2 Technical enquiries - email: mk@murata-ps.com, tel: +44 (0)1908 615232www.murata-ps.com
782482 Series
ADM2482E/ADM2487E Compatible Converter Transformers For full details go to www.murata-ps.com/rohs SELECTION GUIDE Order Code Nominal Input Voltage Nominal Output Voltage Isolation Voltage Turns Ratio Package StyleVV V DC 782482/33VC 3.3 3.3 4000 1CT:1.33CT DIL 782482/53VC 5.0 3.3 4000 1.14CT:1CT DIL CHARACTERISTICS Parameter Conditions 782482/33VC 782482/53VC UnitsMin. Max. Min. Max. Primary Inductance, LP 1 100kHz, 20mV 190 310 150 260 μH Leakage Inductance, LL 1 100kHz, 250mV 8 8 μH Interwinding Capacitance, CWW 100kHz, 250mV 8 8 pF Primary DC Resistance, RDC 1 <0.1VDC 600 600 mΩ Volt-time Product, Et2 5kHz, 5V 13 13 Vμs ABSOLUTE MAXIMUM RATINGS Operating free air temperature range -40°C to 85°C Storage temperature range -50°C to 125°C Isolation voltage (fl ash tested for 1 second) 4.0kVDC SOLDERING INFORMATION3 Peak wave solder temperature 260˚C for 10 seconds Pin fi nish Matte tin Specifi cations typical at TA = 25°C 1 L P, LL and RDC measured between pins 1-3. 2 Where pulse applied across pins 1 and 2. 3 For further information, please visit www.murata-ps.com/rohs TECHNICAL NOTES ISOLATION VOLTAGE ‘Hi Pot Test’, ‘Flash Tested’, ‘Withstand Voltage’, ‘Proof Volt- age’, ‘Dielectric Withstand Voltage’ & ‘Isolation Test Voltage’ are all terms that relate to the same thing, a test voltage, applied for a specifi ed time, across a component designed to provide electrical isolation, to verify the integrity of that isolation. All products in this series are 100% production tested at their stated isolation voltage. A question commonly asked is, “What is the continuous voltage that can be applied across the part in normal opera- tion?” For a part holding no specifi c agency approvals both input and output should normally be maintained within SELV limits i.e. less than 42.4V peak, or 60VDC. The isolation test volt- age represents a measure of immunity to transient voltages and the part should never be used as an element of a safety isolation system. The part could be expected to function cor- rectly with several hundred volts offset applied continuously across the isolation barrier; but then the circuitry on both sides of the barrier must be regarded as operating at an unsafe voltage and further isolation/insulation systems must form a barrier between these circuits and any user-acces- sible circuitry according to safety standard requirements. REPEATED HIGH-VOLTAGE ISOLATION TESTING It is well known that repeated high-voltage isolation testing of a barrier component can actually degrade isolation capability, to a lesser or greater degree depending on materials, construction and environ- ment. This series has toroidal isolation transformers, with no additional insulation between primary and secondary windings of enameled wire. While parts can be expected to withstand several times the stated test voltage, the isolation capability does de- pend on the wire insulation. Any material, including this enamel (typically polyurethane) is susceptible to eventual chemical degradation when subject to very high applied voltages thus implying that the number of tests should be strictly limited. We there- fore strongly advise against repeated high voltage isolation testing, but if it is absolutely required, that the voltage be reduced by 20% from specifi ed test voltage. This consideration equally applies to agency recog- nized parts rated for better than functional isolation where the wire enamel insulation is always supple- mented by a further insulation system of physical spacing or barriers.
FEATURES
RoHS compliant Analog Devices ADM2482E/ADM2487E compatible 4.0kVDC isolation Industry-standard pinout UL 94 V-0 package materials Low profi le Toroidal construction Fully encapsulated Industrial temperature range Surface mount versions available soon Recommended by Analog Devices, Inc. Backward compatible with Sn/Pb soldering systems
DESCRIPTION
The 782482 series of converter transformers are specifi cally designed for use with Analog Devices chipsets to provide isolated RS-485 and RS-422 interfaces. Carefully controlled turns ratios ensure consistent performance whilst a toroidal construction minimises EMI.
KMP_782482C_A01 Page 2 of 2 Technical enquiries - email: mk@murata-ps.com, tel: +44 (0)1908 615232www.murata-ps.com ADM2482E/ADM2487E Compatible Converter Transformers Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifi cations are subject to change without notice. © 2008 Murata Power Solutions, Inc. USA: Mansfi eld (MA), Tel: (800) 233 2765, email: sales@murata-ps.com Canada: Toronto, Tel: (866) 740 1232, email: toronto@murata-ps.com UK: Milton Keynes, Tel: +44 (0)1908 615232, email: mk@murata-ps.com France: Montigny Le Bretonneux, Tel: +33 (0)1 34 60 01 01, email: france@murata-ps.com Germany: München, Tel: +49 (0)89-544334-0, email: ped.munich@murata-ps.com Japan: Tokyo, Tel: 3-3779-1031, email: sales_tokyo@murata-ps.com Osaka, Tel: 6-6354-2025, email: sales_osaka@murata-ps.com Website: www.murata-ps.jp China: Shanghai, Tel: +86 215 027 3678, email: shanghai@murata-ps.com Guangzhou, Tel: +86 208 221 8066, email: guangzhou@murata-ps.com Murata Power Solutions, Inc. 11 Cabot Boulevard, Mansfi eld, MA 02048-1151 U.S.A. Tel: (508) 339-3000 (800) 233-2765 Fax: (508) 339-6356 www.murata-ps.com email: sales@murata-ps.com ISO 9001 REGISTERED PACKAGE SPECIFICATIONS MECHANICAL DIMENSIONS RECOMMENDED FOOTPRINT DETAILS 3.44±0.50 (0.135±0.02) 6.35 (0.25) 9.14 (0.360) Max. 9.77 (0.385) Max. Primary Secondary 0.30(0.012) (0.40±0.016) 0.6 (0.024) 2.54 (0.1) 782482/33VC XYYWW 2.54 (0.10) 2.54 (0.10) -0.00 (0.000) Unless otherwise stated all dimensions in mm (inches) ± 0.25 (0.01). Unless otherwise stated all dimensions in mm (inches) ±0.25 (0.01). Package Weight 1.1g TYP . TUBE OUTLINE DIMENSIONS 0.60±0.15 (0.024±0.006) 4.00 (0.16) 5.20 (0.21) 10.65 - 11.65 (0.419 - 0.459) 12.95 (0.51) 3.80 (0.15) 15.70 (0.62) Unless otherwise stated all dimensions in mm (inches) ±0.25 (0.01). Tube length: 500±2 (19.7±0.08) Tube quantity: 50 Tube material: Antistatic coated clear PVC. TOP VIEW