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766 Series
Pulse Transformers
SELECTION GUIDE1
Max. DC Resistance Max. Leakage Inductance Max. Isolation Voltage Min. Primary Inductance Min. Primary Constant, ET Max. Interwinding Capacitance Pin Connection Style
A B C D 2
Order Code
Turns Ratio 2%
1:1 1:1 1:1 1:1 1:1 1:1 1:1 1:1 1:1 1:1 1:1 1:1:1 1CT:1CT 2CT:1CT
H
76600/1C 76600/2C 76600/3C 76600/4C 76601/1C 76601/2C 76601/3C 76601/6C 76601/20C 76601/23C 76601/24C 76602/1C 76615/1C 76616/3C 1916 492 219 50 1916 492 219 9.5 20.1 938 11.7mH 2060 3200 4350
Vs
17.5 8.5 5.5 4.0 17.5 8.5 5.5 6 2.5 10.5 50.5 17.5 45 23
H
0.60 0.30 0.25 0.20 0.60 0.30 0.25 0.20 0.20 0.20 0.40 0.60 2.00 3.00
pF
49 22 14 10 49 22 12 13 5 35 250 72 52 35
1.50 0.80 0.50 0.40 1.50 0.80 0.50 0.40 0.20 0.15 1.35 1.50 1.00 1.00
Vrms
FEATURES
RoHS compliant 4 Configurations Inductance to 11.7mH Up to 50 Vs ET Industry standard pinout 500VDC Isolation PCB mounting UL 94 V-0 package materials Toroidal construction Fully encapsulated
500
Please note: For additional variants please see 786 series datasheet.
ABSOLUTE MAXIMUM RATINGS
Operating free air temperature range Storage temperature range
0C to 70C -60C to 125C
DESCRIPTION
The 766 Series is a range of general purpose pulse transformers. Common applications include line coupling, impedance-matching, or isolating. The devices can also be used in small isolated power supplies or as common-mode chokes in filtering applications.
SOLDERING INFORMATION1
Peak wave solder temperature Pin finish
1 For further information, please visit www.murata-ps.com/rohs All specifications typical at TA=25C.
300C for 10 seconds Matte tin with nickel pre-plate
For full details go to www.murata-ps.com/rohs
www.murata-ps.com
Technical enquiries - email: mk@murata-ps.com, tel: +44 (0)1908 615232
KMP_766C_B02 Page 1 of 3
Mechcanical Dimensions
1
766 Series
Pulse Transformers
PACKAGE SPECIFICATIONS
MECHANICAL DIMENSIONS
1
8.89 (0.350) Max. 12.70 (0.500) Max.
2
12.70 (0.500) Max. 8.89 (0.350) Max.
1 5 610 6C
XYYWW
2 6
1 3 5
602 1C
XYYWW
2 4 6
5.84 (0.230)
10.00 (0.394)
5.84 (0.230)
10.00 (0.394)
6.35 (0.250)
0.560.05 (0.0220.002)
0.560.05 (0.0220.002)
5.08 (0.200)
2.54 (0.100)
2.54 (0.100)
10.16 (0.400)
2.54 (0.100)
10.16 (0.400)
Unless otherwise stated all dimensions in mm (inches) 0.25 (0.01). All pins on a 2.54 (0.1) pitch and within 0.25 (0.01) of true position. Package Weight: 1.1g Typ.
RECOMMENDED FOOTPRINT DETAILS
TUBE DIMENSIONS
15.25 (0.60)
6.35 (0.250)
21.25 (0.84) 11.00+0.5-0.0 (0.433+0.02-0.0)
6.9+0.5-0.0 (0.272+0.02-0.0)
Holes may be omitted for variants with fewer than 6 pins. Unless otherwise stated all dimensions in mm (inches) 0.25 (0.01). All pins on a 2.54 (0.1) pitch and within 0.25 (0.01) of true position.
0.500.15 (0.0200.006)
Tube length: 5202.0 (20.470.08) Unless otherwise stated all dimensions in mm (inches) 0.55 (0.022).
www.murata-ps.com
Technical enquiries - email: mk@murata-ps.com, tel: +44 (0)1908 615232
KMP_766C_B02 Page 2 of 3
766 Series
Pulse Transformers
PACKAGE SPECIFICATIONS (continued)
PIN CONNECTION STYLE - 6 PIN DIP (TOP VIEW)
TECHNICAL NOTES
ISOLATION VOLTAGE
`Hi Pot Test', `Flash Tested', `Withstand Voltage', `Proof Voltage', `Dielectric Withstand Voltage' & `Isolation Test Voltage' are all terms that relate to the same thing, a test voltage, applied for a specified 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 operation?" 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.
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 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. This consideration equally applies to agency recognized 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.
USA: UK: France: Japan:
Mansfield (MA), Tel: (800) 233 2765, email: sales@murata-ps.com Milton Keynes, Tel: +44 (0)1908 615232, email: mk@murata-ps.com Montigny Le Bretonneux, Tel: +33 (0)1 34 60 01 01, email: france@murata-ps.com 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 Shanghai, Tel: +86 215 027 3678, email: shanghai@murata-ps.com Guangzhou, Tel: +86 208 221 8066, email: guangzhou@murata-ps.com
Canada: Toronto, Tel: (866) 740 1232, email: toronto@murata-ps.com
Murata Power Solutions, Inc. 11 Cabot Boulevard, Mansfield, 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
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. (c) 2008 Murata Power Solutions, Inc.
Germany: Munchen, Tel: +49 (0)89-544334-0, email: ped.munich@murata-ps.com
China:
www.murata-ps.com
Technical enquiries - email: mk@murata-ps.com, tel: +44 (0)1908 615232
KMP_766C_B02 Page 3 of 3

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