www.murata-ps.com
786 Series
General Purpose Pulse Transformers
SELECTION GUIDE
Primary Min.
Volt-time
Product, Et
Typ.
Interwinding
Capacitance
Min.
Primary
Inductance
Typ.
Leakage
Inductance
Max.
DC
Resistance
Turns
Ratio
1:1
1:1
1:1
1:1
1:1
1:1
1:1
1:1:1
1:1:1
1:1:1
1:1:1
1:1:1
1:1:1
1:1:1
2:1
2:1
2:1
2:1
2:1
2:1
2:1
1CT:1
1CT:1
1CT:1
1CT:1
1CT:1
1CT:1
1CT:1
1CT:1CT
1CT:1CT
1CT:1CT
1CT:1CT
1CT:1CT
1CT:1CT
1CT:1CT
Order Code
μH
78601/4C
78601/3C
78601/2C
78601/8C
78601/1C
78601/16C
78601/9C
78602/4C
78602/3C
78602/2C
78602/8C
78602/1C
78602/16C
78602/9C
78604/4C
78604/3C
78604/2C
78604/8C
78604/1C
78604/16C
78604/9C
78613/4C
78613/3C
78613/2C
78613/8C
78613/1C
78613/16C
78613/9C
78615/4C
78615/3C
78615/2C
78615/8C
78615/1C
78615/16C
78615/9C
67
200
500
1000
2000
4000
10000
67
200
500
1000
2000
4000
10000
67
200
500
1000
2000
4000
10000
67
200
500
1000
2000
4000
10000
67
200
500
1000
2000
4000
10000
Vμs
4
6
10
15
20
28
56
4
6
10
15
20
28
56
4
6
10
15
20
28
56
4
6
10
15
20
28
56
4
6
10
15
20
28
56
μH
0.19
0.20
0.25
0.29
0.47
0.47
0.86
0.11
0.17
0.27
0.35
0.60
0.71
0.71
0.41
0.49
0.65
0.76
0.99
1.61
1.64
0.30
0.65
1.07
1.13
1.53
1.98
3.83
1.21
3.64
6.86
11.9
16.0
37.7
44.5
pF
8
14
22
35
49
78
121
12
19
32
47
72
116
167
4
9
13
20
29
50
72
7
12
20
35
47
64
72
3
5
7
10
16
20
19
Packaging Type
Tube
Tube
Tape & Reel
Ω
0.17
0.25
0.34
0.45
0.60
0.84
1.30
0.18
0.24
0.34
0.46
0.66
0.92
1.34
0.18
0.25
0.34
0.46
0.60
0.85
1.23
0.20
0.25
0.36
0.48
0.63
0.88
1.33
0.17
0.24
0.34
0.45
0.60
0.87
1.33
Vrms
FEATURES
n
RoHS compliant
n
4 Configurations
n
Primary inductance to 10mH
n
1kVrms isolation
n
Industry standard pinout
n
Surface mount option
n
UL 94 V-0 package materials
n
Low profile
n
Toroidal construction
n
Fully encapsulated
1000
1000
1000
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 common-
mode chokes in filtering applications.
1000
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.
1000
ORDER CODE DETAILS
Order Code
786XX/XC
786XX/XMC
786XX/XMC-R
Package Type
6 Pin DIL
6 Pin SM
6 Pin SM
Quantity
50
50
500
0°C to 70°C
-60°C to 125°C
Matte tin
300°C for 10 seconds
220°C
ABSOLUTE MAXIMUM RATINGS
Operating free air temperature range
Storage temperature range
SOLDERING INFORMATION
1
Pin finish
Peak wave solder temperature
Peak reflow temperature
2
All specifications typical at T
A
=25°C
1 For further information, please visit www.murata-ps.com/rohs
2 For higher temperature reflow variants see 786J series datasheet
For full details go to
www.cd4power.com/rohs
www.murata-ps.com/rohs
For full details go to
www.murata-ps.com/support
KMP_786C_B07
Page 1 of 4
Winding
Configuration
1
2
1
3
4
Isolation
Voltage
786 Series
General Purpose Pulse Transformers
PACKAGE SPECIFICATIONS
MECHANICAL DIMENSIONS
6 Pin DIL Package Style
9.52
(0.375) Max.
6 Pin SMD Package Style
12.70 (0.5)
9.52 (0.375)
Max.
9.0
(0.354)
Max.
78601/1C
XYYWW
9.0
(0.354)
78601/1MC
XYYWW
6.35
(0.25)
3.44±0.50
(0.135±0.02)
0.30 (0.012)
0.20 (0.008)
0.63 (0.025)
0.53 (0.021)
6.35
(0.25)
0.30 (0.012)
0.20 (0.007)
0.90 (0.04)
2.54 (0.1)
0.63 (0.025)
0.53 (0.021)
10.16 (0.4)
5.08 (0.2)
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
6 Pin DIL
2.542.54 (0.10)
(0.10)
2.54 2.54 (0.10)
(0.10)
6 Pin SM
1.60 (0.06)
1.60 (0.06)
Ø1.20 (0.05) +0.15 (0.006)
Ø1.20 (0.05) +0.15 (0.006)
-0.00 (0.000)
-0.000 (0.00)
1.00
1.00
(0.04)
(0.04)
2.54 (0.10)
2.54 (0.10)
11.50
11.50
(0.45)
(0.45)
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.
WINDING CONFIGURATION - 6 PIN DIL/SMD (TOP VIEW)
1
1
2* Pri
3
6
5*
4
1
2
3
2
Pri
Sec 1
Sec 2
6
5
4
3
1
2
3
6
5*
4
4
1
2
3
6
5
4
Sec
Pri
Sec
Pri
Sec
* Pins only fitted on 786XX/XMC and 786XX/XMC-R variants.
www.murata-ps.com/support
KMP_786C_B07
Page 2 of 4
786 Series
General Purpose Pulse Transformers
TUBE OUTLINE DIMENSIONS
10.95
(0.43)
4.00 (0.16)
0.60±0.15
(0.023±0.005)
5.50 (0.22)
3.80
(0.15)
15.70 (0.62)
Tube length: 465±2 (18.3±0.08). Tube quantity: 50.
Tube material: Antistatic coated clear pvc.
Unless otherwise stated all dimensions in mm (inches) ±0.25 (0.01).
12.95
(0.51)
TECHNICAL NOTES
ISOLATION
VOLTAGE
‘Hi Pot Test’, ‘Flash Tested’, ‘Withstand Volt-
age’, ‘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 compo-
nent 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 approv-
als 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 bar-
rier; 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 ac-
cording 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 ma-
terials, construction and environment. This
series has toroidal isolation transformers,
with no additional insulation between pri-
mary and secondary windings of enameled
wire. While parts can be expected to with-
stand several times the stated test voltage,
the isolation capability does depend on the
wire insulation. Any material, including this
enamel (typically polyurethane) is suscep-
tible 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 test-
ing, 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.
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.
© 2011 Murata Power Solutions, Inc.
www.murata-ps.com/support
KMP_786C_B07
Page 4 of 4
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