KMP_786JC_A04 Page 1 of 4
786J Series
Surface Mount General Purpose Pulse Transformers
www.murata-ps.com/support
www.murata-ps.com
For full details go to
www.murata-ps.com/rohs
FEATURES
J-STD-020D reflow
RoHS compliant
4 Configurations
Primary inductance to 10mH
1kVrms isolation
Industry standard pinout
UL 94 V-0 package materials
Low profile
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.
SELECTION GUIDE
Order Code Turns Ratio
Min.
Primary
Inductance
Primary Min.
Volt-time
Product, Et
Typ.
Leakage
Inductance
Typ.
Interwinding
Capacitance
Max.
Primary DC
Resistance
Isolation
Voltage
Winding
Configuration
μH Vμs μH pF Ω Vrms
78601/4JC 1:1 58 4 0.19 8 0.17
1000 1
78601/3JC 1:1 150 6 0.20 14 0.25
78601/2JC 1:1 350 10 0.25 22 0.34
78601/8JC 1:1 850 15 0.29 35 0.45
78601/1JC 1:1 2000 20 0.47 49 0.60
78601/16JC 1:1 3650 28 0.69 78 0.84
78601/9JC 1:1 10000 56 0.93 121 1.30
78602/4JC 1:1:1 53 4 0.11 12 0.18
1000 2
78602/3JC 1:1:1 180 6 0.17 19 0.24
78602/2JC 1:1:1 380 10 0.27 32 0.34
78602/8JC 1:1:1 970 15 0.37 47 0.46
78602/1JC 1:1:1 1890 20 0.65 72 0.66
78602/16JC 1:1:1 3350 28 0.71 116 1.20
78602/9JC 1:1:1 10000 56 0.71 167 1.80
78604/4JC 2:1 65 4 0.41 4 0.18
1000 1
78604/3JC 2:1 160 6 0.49 9 0.25
78604/2JC 2:1 500 10 0.65 13 0.34
78604/8JC 2:1 850 15 0.76 20 0.46
78604/1JC 2:1 1840 20 0.99 29 0.60
78604/16JC 2:1 3300 28 1.61 50 0.85
78604/9JC 2:1 10000 56 2.30 72 1.23
78613/4JC 1CT:1 50 4 0.30 7 0.20
1000 3
78613/3JC 1CT:1 190 6 0.65 12 0.25
78613/2JC 1CT:1 490 10 1.07 20 0.36
78613/8JC 1CT:1 980 15 1.13 35 0.48
78613/1JC 1CT:1 2000 20 1.70 47 0.63
78613/16JC 1CT:1 3200 28 2.80 64 0.88
78613/9JC 1CT:1 10000 56 3.83 72 1.33
78615/4JC 1CT:1CT 65 4 1.21 3 0.17
1000 4
78615/3JC 1CT:1CT 190 6 3.64 5 0.24
78615/2JC 1CT:1CT 500 10 6.86 7 0.34
78615/8JC 1CT:1CT 1000 15 11.9 10 0.45
78615/1JC 1CT:1CT 1700 20 16.0 16 0.60
78615/16JC 1CT:1CT 3700 28 37.7 20 0.92
78615/9JC 1CT:1CT 10000 56 52.5 19 1.45
ORDER CODE DETAILS
Order Code Package Type Packaging Type Quantity
786XX/XJC 6 Pin SM Tube 50
786XX/XJC-R 6 Pin SM Tape & Reel 500
ABSOLUTE MAXIMUM RATINGS
Operating free air temperature range -40°C to 85°C
Storage temperature range -60°C to 125°C
SOLDERING INFORMATION1
Pin finish Matte tin
Max. peak reflow temperature 245°C
Moisture sensitivity level21
Max. time above liquidous (217°C) 100s
All specifications typical at TA=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.
KMP_786JC_A04 Page 2 of 4
786J Series
Surface Mount General Purpose Pulse Transformers
www.murata-ps.com/support
PACKAGE SPECIFICATIONS
MECHANICAL DIMENSIONS
RECOMMENDED FOOTPRINT DETAILS
WINDING CONFIGURATION (TOP VIEW)
1243
* Pins only fitted on 786XX/XJC and 786XX/XJC-R variants.
12.70 (0.5)
9.52 (0.375)
Max.
2.54 (0.1)
0.90 (0.04)
6.35
(0.25)
9.0
(0.354)
0.63 (0.025)
0.53 (0.021)
0.30 (0.012)
0.20 (0.008)
XYYWW
78601/1JC
1
2*
34
5*
61
2
34
5
6
1
2
34
5*
6
1
2
34
5
6
11.50
(0.45)
2.54 (0.10)
1.00
(0.04)
1.60 (0.06)
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.
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.
Pri Sec
Sec 1
Sec 2
Pri
Pri Sec SecPri
KMP_786JC_A04 Page 3 of 4
786J Series
Surface Mount General Purpose Pulse Transformers
www.murata-ps.com/support
TAPE & REEL SPECIFICATIONS
REEL OUTLINE DIMENSIONS
TAPE OUTLINE DIMENSIONS
30.4
(1.20) Max.
23.9-27.4 (0.94-1.08)
13.50 (0.53)
12.80 (0.50)
1.50 (0.059)
Min.
60 (2.36) Min.
20.20 (0.80) Min.
100 (3.9)
Min.
Leader section
400 (15.7) Min.
Goods
enclosure
section
Trailer section
160 (6.3) Min.
Ø382 (15.039) Min.
Ø
Ø
*
24.4 (0.96)
26.4 (1.04)
g
g
Unless otherwise stated all
dimensions in mm (inches) ± 0.25 (0.01).
* Includes flange distortion at outer edge.
g Measured at hub.
0.60 (0.024) Max.
7.20 (0.283)
9.37 (0.369)
Direction of unreeling
1.75 (0.069)
11.50 (0.453)
4.00 (0.157) 2.00 (0.079)
12.00 (0.472)
Cover tape
1.50 (0.059 )
+0.004
-0.000
+0.10
-0.00
24.00 (0.945 )
+0.012
-0.004
+0.30
-0.10
78601/1JC
XYYWW
Unless otherwise stated all
dimensions in mm (inches) ± 0.25 (0.01).
KMP_786JC_A04 Page 4 of 4
786J Series
Surface Mount General Purpose Pulse Transformers
www.murata-ps.com/support
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. © 2018 Murata Power Solutions, Inc.
This product is subject to the following operating requirements
and the Life and Safety Critical Application Sales Policy:
Refer to: http://www.murata-ps.com/requirements/
TUBE OUTLINE DIMENSIONS
0.60±0.15
(0.023±0.005)
4.00 (0.16)
5.50 (0.22)
10.95
(0.43)
12.95
(0.51)
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).
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
recognised 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.
