78601/3C

**786 Series** 

General Purpose Pulse Transformers 

## **www.murata-ps.com** 

## **FEATURES** 

- ~~__~~ a Configurationsimary inductance to 10mHHS compliant ~~_~~ Vrms isolation ~~_~~ ustry standard pinout 

- ~~a~~ rface mount option ~~a~~ 94 V-0 package materials ~~oo~~ w profile ~~oo~~ roidal construction ~~_~~ lly encapsulated 

## **DESCRIPTION** 

The 786 series is a comprehensive range of general purpose pulse transformers. Common applications include line coupling, matching or isolating. The devices can also be used in small isolated power supplies and also as commonmode chokes in filtering applications. 

## **Surface-mount parts** 

The surface-mount (M suffix) products are not recommended for new designs. For existing designs, however, Murata Power Solutions will continue to manufacture and fully support these parts. 

For recommended alternatives please refer to the 786J Series datasheet. 

Ya For full details go to 6 **www.murata-ps.com/rohs** 

|**SELECTION GUIDE**<br>Primary Min.<br>Interwinding<br>~~eee~~|**SELECTION GUIDE**<br>Primary Min.<br>Interwinding<br>~~eee~~|**SELECTION GUIDE**<br>Primary Min.<br>Interwinding<br>~~eee~~|**SELECTION GUIDE**<br>Primary Min.<br>Interwinding<br>~~eee~~|**SELECTION GUIDE**<br>Primary Min.<br>Interwinding<br>~~eee~~|**SELECTION GUIDE**<br>Primary Min.<br>Interwinding<br>~~eee~~|**SELECTION GUIDE**<br>Primary Min.<br>Interwinding<br>~~eee~~|**SELECTION GUIDE**<br>Primary Min.<br>Interwinding<br>~~eee~~|**SELECTION GUIDE**<br>Primary Min.<br>Interwinding<br>~~eee~~|
|---|---|---|---|---|---|---|---|---|
|Order Code<br> ~~eee~~|Turns<br>Ratio<br>~~eee~~|Min.<br>Primary<br>Inductance<br>~~eee~~|Primary Min.<br>Volt-time<br>Product, Et<br>~~eee~~|Typ.<br>Leakage<br>Inductance<br>~~eee~~|Typ.<br>Interwinding<br>Capacitance<br>~~eee~~|Max.<br>DC<br>Resistance<br>~~eee~~|Isolation<br>Voltage<br>~~eee~~|Winding<br>Configuration<br>~~eee~~|
|||μH|Vμs|μH|pF|Ω|Vrms||
|**78601/4C**|1:1|67|4|0.19|8|0.17|1000|1|
|**78601/3C**|1:1|200|6|0.20|14|0.25|||
|**78601/2C**|1:1|500|10|0.25|22|0.34|||
|**78601/8C**|1:1|1000|15|0.29|35|0.45|||
|**78601/1C**|1:1|2000|20|0.47|49|0.60|||
|**78601/16C**|1:1|4000|28|0.47|78|0.84|||
|**78601/9C**|1:1|10000|56|0.86|121|1.30|||
|**78602/4C**|1:1:1|67|4|0.11|12|0.18|1000|2|
|**78602/3C**|1:1:1|200|6|0.17|19|0.24|||
|**78602/2C**|1:1:1|500|10|0.27|32|0.34|||
|**78602/8C**|1:1:1|1000|15|0.35|47|0.46|||
|**78602/1C**|1:1:1|2000|20|0.60|72|0.66|||
|**78602/16C**|1:1:1|4000|28|0.71|116|0.92|||
|**78602/9C**|1:1:1|10000|56|0.71|167|1.34|||
|**78604/4C**|2:1|67|4|0.41|4|0.18|1000|1|
|**78604/3C**|2:1|200|6|0.49|9|0.25|||
|**78604/2C**|2:1|500|10|0.65|13|0.34|||
|**78604/8C**|2:1|1000|15|0.76|20|0.46|||
|**78604/1C**|2:1|2000|20|0.99|29|0.60|||
|**78604/16C**|2:1|4000|28|1.61|50|0.85|||
|**78604/9C**|2:1|10000|56|1.64|72|1.23|||
|**78613/4C**|1CT:1|67|4|0.30|7|0.20|1000|3|
|**78613/3C**|1CT:1|200|6|0.65|12|0.25|||
|**78613/2C**|1CT:1|500|10|1.07|20|0.36|||
|**78613/8C**|1CT:1|1000|15|1.13|35|0.48|||
|**78613/1C**|1CT:1|2000|20|1.53|47|0.63|||
|**78613/16C**|1CT:1|4000|28|1.98|64|0.88|||
|**78613/9C**|1CT:1|10000|56|3.83|72|1.33|||
|**78615/4C**|1CT:1CT|67|4|1.21|3|0.17|1000|4|
|**78615/3C**|1CT:1CT|200|6|3.64|5|0.24|||
|**78615/2C**|1CT:1CT|500|10|6.86|7|0.34|||
|**78615/8C**|1CT:1CT|1000|15|11.9|10|0.45|||
|**78615/1C**|1CT:1CT|2000|20|16.0|16|0.60|||
|**78615/16C**|1CT:1CT|4000|28|37.7|20|0.87|||
|**78615/9C**|1CT:1CT|10000|56|44.5|19|1.33|||



All specifications typical at TA=25°C 1 For further information, please visit www.murata-ps.com/rohs 2 For higher temperature reflow variants see 786J series datasheet 

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**KMP_786C_B08** Page 1 of 4 

**786 Series** 

General Purpose Pulse Transformers 

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a PACKAGE SPECIFICATIONS D Nl<br>MECHANICAL DIMENSIONS<br>6 Pin DIL Package Style 6 Pin SMD Package Style<br>12.70 (0.5)<br>9.52<br>(0.375) Max. 9.52 (0.375)<br>Max.<br>9.0<br>(0.354)  9.0<br>Max. 78601/1C (0.354) 78601/1MC<br>XYYWW XYYWW -<br>hd ek<br>6.35 6.35<br>(0.25) (0.25)<br>3.44±0.50 0.30 (0.012)<br>(0.135±0.02) 0.20 (0.007) 0.90 (0.04) 0.63 (0.025)<br>t p l” = dl 2.54 (0.1) l 0.53 (0.021)<br>0.30 (0.012) 0.63 (0.025)<br>0.20 (0.008) 0.53 (0.021) Unless otherwise stated all dimensions in mm (inches)<br>te 10.16 (0.4) 1 JE 5.08 (0.2) hf ±0.25 (0.01). All pins on a 2.54 (0.1) pitch and within  Ll=<br>±0.25 (0.01) of true position.<br>Package Weight: 1.1g Typ.<br>RECOMMENDED FOOTPRINT DETAILS<br>6 Pin DIL 2.54 (0.10) 6 Pin SM<br>2.54 (0.10) 1.60 (0.06)<br>2.54 (0.10)<br>Ø1.20 (0.05) [+0.15 (0.006)]<br>-0.00 (0.000)<br>1.00<br>(0.04)<br>11.50<br>(0.45)<br>Unless otherwise stated all dimensions in mm (inches)<br>±0.25 (0.01). All pins on a 2.54 (0.1) pitch and within ±<br>0.25 (0.01) of true position.<br>WINDING CONFIGURATION - 6 PIN DIL/SMD (TOP VIEW)<br>1 2 3 4<br>1 6 1 Pri 6 1 6 1 6<br>Pri Sec Pri Sec<br>2* Pri Sec 5* 2 5 2 5* 2 5<br>| | aa | | rT<br>3 4 3 Sec 1 4 3 4 3 4<br>Sec 2<br>**----- End of picture text -----**<br>


- Pins only fitted on 786XX/XMC and 786XX/XMC-R variants. 

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**KMP_786C_B08** Page 2 of 4 

**786 Series** 

General Purpose Pulse Transformers 

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TAPE & REEL SPECIFICATIONS<br>REEL OUTLINE DIMENSIONS<br>Ø382 (15.039) Min.  60 (2.36) Min. 23.9-27.4 (0.94-1.08)*<br>Ø 13.50 (0.53)<br>12.80 (0.50)<br>Leader section<br>400 (15.7) Min.<br>100 (3.9)<br>Min.<br>1.50 (0.059)<br>Min.<br>30.4<br>(1.20) Max.  �<br>Goods<br>enclosure<br>section<br>24.4 (0.96) �<br>26.4 (1.04)<br>Trailer section<br>160 (6.3) Min.<br>Unless otherwise stated all<br>dimensions in mm (inches) ± 0.25 (0.01).<br>Ø20.20 (0.80) Min.<br>*   Includes flange distortion at outer edge.<br>�   Measured at hub.<br>TAPE OUTLINE DIMENSIONS<br>1.75 (0.069) 4.00  (0.157) 2.00 (0.079) 1.50              (0.059            )+0.10-0.00 +0.004-0.000<br>Cover tape 9.37 (0.369)<br>12.00 (0.472) 0.60 (0.024) Max.<br>7.20 (0.283) Direction of unreeling<br>Unless otherwise stated all<br>dimensions in mm (inches) ± 0.25 (0.01).<br>11.50 (0.453)<br>+0.01224.00            (0.945             )-0.004<br>XYYWW<br>78601/1C<br>+0.30 -0.10<br>**----- End of picture text -----**<br>


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**KMP_786C_B08** Page 3 of 4 

**786 Series** 

General Purpose Pulse Transformers 

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es TUBE OUTLINE DIMENSIONS — ee TECHNICAL NOTES<br>10.95  ISOLATION VOLTAGE REPEATED HIGH-VOLTAGE<br>| (0.43) ‘Hi Pot Test’, ‘Flash Tested’, ‘Withstand Volt- ISOLATION TESTING<br>;<br>4.00 (0.16) age’, ‘Proof Voltage’, ‘Dielectric Withstand  It is well known that repeated high-voltage<br>Voltage’ & ‘Isolation Test Voltage’ are all terms  isolation testing of a barrier component can<br>0.60±0.15  12.95  that relate to the same thing, a test voltage,  actually degrade isolation capability, to a<br>(0.023±0.005) (0.51) applied for a specified time, across a compo- lesser or greater degree depending on ma-<br>nent designed to provide electrical isolation, to  terials, construction and environment. This<br>5.50 (0.22) verify the integrity of that isolation. series has toroidal isolation transformers,<br>a) 3.80  ' | All products in this series are 100% production  with no additional insulation between pri-<br>(0.15) tested at their stated isolation voltage. mary and secondary windings of enameled<br>1 | = 15.70 (0.62) & - A question commonly asked is, “What is the  wire.  While parts can be expected to with-<br>stand several times the stated test voltage,<br>Tube length: 465±2 (18.3±0.08). Tube quantity: 50. continuous voltage that can be applied across  the isolation capability does depend on the<br>Tube material: Antistatic coated clear pvc. the part in normal operation?” wire insulation. Any material, including this<br>Unless otherwise stated all dimensions in mm (inches) ±0.25 (0.01).<br>**----- End of picture text -----**<br>


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 environment. 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 depend 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 therefore strongly advise against repeated high voltage isolation testing, but if it is absolutely required, that the voltage be reduced by 20% from specified test voltage. 

For a part holding no specific 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 voltage 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 correctly 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-accessible circuitry according to safety standard requirements. 

This consideration equally applies to agency recognised parts rated for better than functional isolation where the wire enamel insulation is always supplemented by a further insulation system of physical spacing or barriers. 

**This product is subject to the following operating requirements and the Life and Safety Critical Application Sales Policy: Refer to: http://www.murata-ps.com/requirements/** 

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. Specifications are subject to change without notice. _**© 2018 Murata Power Solutions, Inc.**_ 

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**KMP_786C_B08** Page 4 of 4