www.murata-ps.com
786J Series
Surface Mount General Purpose Pulse Transformers
SELECTION GUIDE
Primary Min.
Volt-time
Product, Et
Typ.
Interwinding
Capacitance
Max.
Primary DC
Resistance
Min.
Primary
Inductance
Typ.
Leakage
Inductance
Winding
Configuration
1
2
1
3
4
Order Code
Turns Ratio
μH
78601/4JC
78601/3JC
78601/2JC
78601/8JC
78601/1JC
78601/16JC
78601/9JC
78602/4JC
78602/3JC
78602/2JC
78602/8JC
78602/1JC
78602/16JC
78602/9JC
78604/4JC
78604/3JC
78604/2JC
78604/8JC
78604/1JC
78604/16JC
78604/9JC
78613/4JC
78613/3JC
78613/2JC
78613/8JC
78613/1JC
78613/16JC
78613/9JC
78615/4JC
78615/3JC
78615/2JC
78615/8JC
78615/1JC
78615/16JC
78615/9JC
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
58
150
350
850
2000
3650
10000
53
180
380
970
1890
3350
10000
65
160
500
850
1840
3300
10000
50
190
490
980
2000
3200
10000
65
190
500
1000
1700
3700
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
0.69
0.93
0.11
0.17
0.27
0.37
0.65
0.71
0.71
0.41
0.49
0.65
0.76
0.99
1.61
2.30
0.30
0.65
1.07
1.13
1.70
2.80
3.83
1.21
3.64
6.86
11.9
16.0
37.7
52.5
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
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
1.20
1.80
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
0.92
1.45
FEATURES
n
J-STD-020D reflow
n
RoHS compliant
n
4 Configurations
n
Primary inductance to 10mH
n
1kVrms isolation
n
Industry standard pinout
n
UL 94 V-0 package materials
n
Low profile
n
Toroidal construction
DESCRIPTION
The 786J 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.
For through hole variants please see 786 Series
datasheet.
ORDER CODE DETAILS
Order Code
786XX/XJC
786XX/XJC-R
Package Type
6 Pin SM
6 Pin SM
Quantity
50
500
-40°C to 85°C
-60°C to 125°C
Matte tin
245°C
1
100s
ABSOLUTE MAXIMUM RATINGS
Operating free air temperature range
Storage temperature range
SOLDERING INFORMATION
1
Pin finish
Max. peak reflow temperature
Moisture sensitivity level
2
Max. time above liquidous (217°C)
For full details go to
www.murata-ps.com/rohs
All specifications typical at T
A
=25°C
1 For further information, please visit www.murata-ps.com/rohs
2 Representative samples of the product were subjected to the conditioning described in IPC/JEDEC J-STD-020D and passed electrical
testing, package coplanarity and visual inspection which revealed no external cracks or changes in package body flatness.
www.murata-ps.com/support
KMP_786JC_A03
Page 1 of 4
Isolation
Voltage
Vrms
1000
1000
1000
1000
1000
786J Series
Surface Mount 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.
© 2012 Murata Power Solutions, Inc.
www.murata-ps.com/support
KMP_786JC_A03
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