KMP_1000C_B02 Page 2 of 2

www.murata-ps.com

1000 Series

Pulse Transformers

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

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

MECHANICAL DIMENSIONS

15.06 (0.593)

15.06

(0.593)

15.75±0.50

(0.620±0.02)

20.5

(0.807)

5.08 (0.20)

5.08 (0.20)

10.16 (0.40)

Ø0.71±0.05

(Ø0.028±0.002)

1003C

YYWW

15.06 (0.593)

15.06

(0.593)

15.75±0.50

(0.620±0.02)

20.5

(0.807)

10.16 (0.40)

10.16 (0.40)

Ø0.71±0.05

(Ø0.028±0.002)

1001C

YYWW

12

2

6

2

4

6

1

5

1

3

5

Pri

Sec

Pri

S2

S1

2

4

6

1

3

5

Pri

Sec

A

B

All dimensions in mm (inches). Package weight: 8.0g Typ.

C

TECHNICAL NOTES

ISOLATION

VOLTAGE

‘Hi Pot Test’, ‘Flash Tested’, ‘Withstand Voltage’, ‘Proof Voltage’, ‘Dielectric Withstand Voltage’ & ‘Isola-

tion 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 great-

er degree depending on materials, construction and environment. While

parts can be expected to withstand several times the stated test voltage,

the isolation capability does depend on the insulative materials used.

Such materials are susceptible to chemical degradation when subject

to very high applied voltages. 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 wire enamel insulation is always

supplemented by a further insulation system of physical spacing or

barriers.