muRata 766 Series Pulse Transformers Owner’s Manual
- June 13, 2024
- muRata
Table of Contents
muRata 766 Series Pulse Transformers
Product Information: 766 Series Pulse Transformers
The 766 Series is a range of general purpose pulse transformers. They are commonly used for line coupling, impedance-matching, isolating, small isolated power supplies, and as common-mode chokes in filtering applications. The transformers are RoHS compliant and come in 4 different configurations. They have a minimum primary inductance, minimum primary constant, maximum leakage inductance, maximum interwinding capacitance, maximum DC resistance, and maximum isolation voltage. The transformers have an industry standard pinout and can be mounted on a PCB. They are constructed in a toroidal shape and are fully encapsulated.
Product Usage Instructions
To use the 766 Series Pulse Transformers, follow these steps:
- Select the appropriate transformer based on the desired specifications. Refer to the order code table for different variants.
- Ensure that the operating free air temperature range and storage temperature range are within the specified limits.
- If soldering is required, follow the recommended peak wave solder temperature and pin finish information.
- Refer to the mechanical dimensions and recommended footprint details to properly install the transformer.
- For any technical enquiries or additional information, contact mk@murata-ps.com or call +44 (0)1908 615232.
Note: For more detailed information and specifications, refer to the full user manual available at www.murata-ps.com.
FEATURES
- RoHS compliant
- 4 Configurations
- Inductance to 11.7mH
- Up to 50 Vμs ET
- Industry standard pinout
- 500VDC Isolation
- PCB mounting
- UL 94 V-0 package materials
- Toroidal construction
- Fully encapsulated
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.
SELECTION GUIDE 1
Order Code
|
Turns Ratio
±2%
|
Min. Primary Inductance
|
Min. Primary Constant, ET
|
Max. Leakage Inductance
| Max.
Interwinding Capacitance
| Max.
DC Resistance
|
Max. Isolation Voltage
| Pin Connection Style| Mechcanical Dimensions
μH| Vμs| μH| pF| Ω| Vrms
76600/1C| 1:1| 1916| 17.5| 0.60| 49| 1.50|
500
|
A
|
1
76600/2C| 1:1| 492| 8.5| 0.30| 22| 0.80
76600/3C| 1:1| 219| 5.5| 0.25| 14| 0.50
76600/4C| 1:1| 50| 4.0| 0.20| 10| 0.40
76601/1C| 1:1| 1916| 17.5| 0.60| 49| 1.50|
B
76601/2C| 1:1| 492| 8.5| 0.30| 22| 0.80
76601/3C| 1:1| 219| 5.5| 0.25| 12| 0.50
76601/6C| 1:1| 9.5| 6| 0.20| 13| 0.40
76601/20C| 1:1| 20.1| 2.5| 0.20| 5| 0.20
76601/23C| 1:1| 938| 10.5| 0.20| 35| 0.15
76601/24C| 1:1| 11.7mH| 50.5| 0.40| 250| 1.35
76602/1C| 1:1:1| 2060| 17.5| 0.60| 72| 1.50| C|
2
76615/1C| 1CT:1CT| 3200| 45| 2.00| 52| 1.00| D
76616/3C| 2CT:1CT| 4350| 23| 3.00| 35| 1.00
Please note: For additional variants please see 786 series datasheet.
Please note: For additional variants please see 786 series datasheet.
ABSOLUTE MAXIMUM RATINGS
Operating free air temperature range| 0°C to 70°C
Storage temperature range| -60°C to 125°C
SOLDERING INFORMATION 1
Peak wave solder temperature| 300˚C for 10 seconds
Pin finish| Matte tin with nickel pre-plate
For further information, please visit www.murata-ps.com/rohs
All specifications typical at TA=25°C.
PACKAGE SPECIFICATIONS
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
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.
TUBE DIMENSIONS
Tube length: 520±2.0 (20.47±0.08)
Unless otherwise stated all dimensions in mm (inches) ±0.55 (0.022).
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.
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. © 2008 Murata Power
Solutions, Inc.
-
USA:
Mansfield (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
Technical enquiries
email: mk@murata-ps.com,
tel: +44 (0)1908 615232
References
Read User Manual Online (PDF format)
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