782482/33VC Murata Power Solutions Inc, 782482/33VC Datasheet

782482/33VC

Manufacturer Part Number

782482/33VC

Description

XFRMR CONV ADM2482 3.3V IN

Manufacturer

Murata Power Solutions Inc

Series

782482r

Datasheet

1.78248233VC.pdf (2 pages)

Specifications of 782482/33VC

Transformer Type

Isolation and Data Interface (Encapsulated)

Inductance

310µH

Turns Ratio - Primary:secondary

1CT : 1.33CT

Mounting Type

Through Hole

Primary Voltage Rating

3.3 V

Secondary Voltage Rating

3.3 V

Mounting Style

Through Hole

Dimensions

9.77 mm L x 9.14 mm W x 6.35 mm H

Product

Toroidal Power Transformers

Height

6.35 mm

Length

9.77 mm

Width

9.14 mm

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

E.t.

Lead Free Status / Rohs Status

Lead free / RoHS Compliant

Other names

811-2153-5

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FEATURES

DESCRIPTION

The 782482 series of converter transformers are

speciﬁ cally designed for use with Analog Devices

chipsets to provide isolated RS-485 and RS-422

interfaces. Carefully controlled turns ratios

ensure consistent performance whilst a toroidal

construction minimises EMI.

www.murata-ps.com

RoHS compliant

Analog Devices ADM2482E/ADM2487E

compatible

4.0kV

Industry-standard pinout

UL 94 V-0 package materials

Low proﬁ le

Toroidal construction

Fully encapsulated

Industrial temperature range

Surface mount versions available soon

Recommended by Analog Devices, Inc.

Backward compatible with

Sn/Pb soldering systems

isolation

www.murata-ps.com/rohs

For full details go to

Speciﬁ cations typical at T

1 L

2 Where pulse applied across pins 1 and 2.

3 For further information, please visit www.murata-ps.com/rohs

ABSOLUTE MAXIMUM RATINGS

SOLDERING INFORMATION

SELECTION GUIDE

CHARACTERISTICS

Parameter

Primary Inductance, L

Leakage Inductance, L

Interwinding Capacitance, C

Primary DC Resistance, R

Volt-time Product, Et

Operating free air temperature range

Storage temperature range

Isolation voltage (ﬂ ash tested for 1 second)

Peak wave solder temperature

Pin ﬁ nish

TECHNICAL NOTES

ISOLATION VOLTAGE

‘Hi Pot Test’, ‘Flash Tested’, ‘Withstand Voltage’, ‘Proof Volt-

age’, ‘Dielectric Withstand Voltage’ & ‘Isolation Test Voltage’

are all terms that relate to the same thing, a test voltage,

applied for a speciﬁ ed 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 opera-

tion?”

For a part holding no speciﬁ c 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 volt-

age 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 cor-

rectly 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-acces-

sible circuitry according to safety standard requirements.

, L

782482/33VC

782482/53VC

Order Code

and R

measured between pins 1-3.

= 25°C

Nominal Input

Voltage

ADM2482E/ADM2487E Compatible Converter Transformers

3.3

5.0

Conditions

100kHz, 20mV

100kHz, 250mV

<0.1VDC

5kHz, 5V

Technical enquiries - email: mk@murata-ps.com, tel:

Nominal Output

Voltage

3.3

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 environ-

ment. 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 de-

pend 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 there-

fore strongly advise against repeated high voltage

isolation testing, but if it is absolutely required, that

the voltage be reduced by 20% from speciﬁ ed test

voltage.

This consideration equally applies to agency recog-

nized parts rated for better than functional isolation

where the wire enamel insulation is always supple-

mented by a further insulation system of physical

spacing or barriers.

Min.

190

782482/33VC

Isolation Voltage

4000

Max.

782482 Series

310

600

KMP_782482C_A01 Page 1 of 2

-40°C to 85°C

-50°C to 125°C

4.0kV

Min.

260˚C for 10 seconds

Matte tin

782482/53VC

150

1CT:1.33CT

1.14CT:1CT

Turns

Ratio

+44 (0)1908 615232

Max.

260

600

Package

Style

Units

DIL

mΩ

Vμs

μH

Related parts for 782482/33VC

782482/33VC Summary of contents

Page 1

... Technical enquiries - email: mk@murata-ps.com, tel: 782482 Series Isolation Voltage Turns Voltage Ratio 3.3 4000 1CT:1.33CT 3.3 4000 1.14CT:1CT 782482/33VC 782482/53VC Min. Max. Min. Max. 190 310 150 260 600 600 13 13 -40° ...

Page 2

... PACKAGE SPECIFICATIONS MECHANICAL DIMENSIONS 9.77 (0.385) Max. 9.14 (0.360) Max. 782482/33VC XYYWW 6.35 (0.25) 3.44±0.50 (0.135±0.02) 0.30(0.012) 0.20(0.008) 10.16±0.40 (0.40±0.016) 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. ...

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