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766 Series
Pulse Transformers
SELECTION GUIDE
1
Max.
DC Resistance
Max. Leakage
Inductance
Max. Isolation
Voltage
Min. Primary
Inductance
Min. Primary
Constant, E
T
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
CT
:1
CT
2
CT
:1
CT
μH
76600/1C
76600/2C
76600/3C
76600/4C
76601/1C
76601/2C
76601/3C
76601/20C
76601/23C
76601/24C
76602/1C
76615/1C
76616/3C
1916
492
219
50
1916
492
219
20.1
700
11.7mH
2060
3200
4350
Vμs
17.5
8.5
5.5
4.0
17.5
8.5
5.5
2.5
10.5
50.5
17.5
45
23
μH
0.60
0.30
0.25
0.20
0.60
0.30
0.25
0.20
0.20
0.86
0.60
2.00
3.00
pF
49
22
14
10
49
22
12
5
35
250
72
52
35
Ω
1.50
0.80
0.50
0.40
1.50
0.80
0.50
0.20
0.20
1.35
1.50
1.00
1.00
Vrms
FEATURES
RoHS compliant
4 Configurations
Inductance to 11.7mH
Up to 50 Vμs E
T
Industry standard pinout
500V
DC
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
0°C to 70°C
-60°C to 125°C
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 INFORMATION
1
Peak wave solder temperature
Pin finish
1 For further information, please visit www.murata-ps.com/rohs
All specifications typical at T
A
=25°C.
300˚C for 10 seconds
Matte tin with nickel pre-plate
For full details go to
www.murata-ps.com/rohs
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KMP_766C_D01
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)
0.56±0.05 (0.022±0.002)
0.56±0.05 (0.022±0.002)
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.
0.50±0.15 (0.020±0.006)
Tube length: 520±2.0 (20.47±0.08)
Unless otherwise stated all dimensions in mm (inches) ±0.55 (0.022).
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KMP_766C_D01
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 speci-
fied 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.
ISO 9001 and 14001 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.
© 2013 Murata Power Solutions, Inc.
www.murata-ps.com/support
KMP_766C_D01
Page 3 of 3
