76250ENC Murata Power Solutions Inc, 76250ENC Datasheet

76250ENC

Manufacturer Part Number

76250ENC

Description

XFRMR MAX250 EN60950 APPROVED

Manufacturer

Murata Power Solutions Inc

Datasheet

1.7625355ENC.pdf (4 pages)

Specifications of 76250ENC

Transformer Type

Isolation and Data Interface (Encapsulated)

Inductance

2mH

Turns Ratio - Primary:secondary

1CT : 1

Mounting Type

Through Hole

Mounting Style

Through Hole

Dimensions

15 mm L x 15 mm W x 12 mm H

Product

Toroidal Power Transformers

Height

12 mm

Length

15 mm

Number Of Outputs

Operating Temperature Range

0 C to + 70 C

Width

15 mm

Transformer Mounting

PC Board

Dc Resistance Max

2ohm

Operating Temperature Max

70Â°C

Length/height, External

15mm

Peak Reflow Compatible (260 C)

Yes

Rohs Compliant

Yes

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

E.t.

Lead Free Status / Rohs Status

Lead free / RoHS Compliant

Other names

811-1285-5

Current page: 1 of 4
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FEATURES

DESCRIPTION

The 76250ENC converter transformer is

speciﬁ cally designed for use with Maxim

chipsets to provide isolated RS232 interfaces. A

carefully controlled turns ratio ensures consistent

performance whilst a toroidal construction

minimises EMI.

The 76253/XXENC converter transformers are

speciﬁ cally designed for use with the MAX253

chip set to provide isolated power supplies. The

5V version can supply 1W and the 3.3V version

can supply 500mW. A centre tapped secondary

winding allows for full bridge, half bridge or

voltage doubling.

The devices are fully approved to BS EN 60950 for

use in telecoms applications.

RoHS compliant

Maxim MAX250/MAX251/MAX253

compatible

BS EN 60950 approved

Isolation to 6kV

Toroidal construction

Industry-standard pinout

UL 94 V-0 package materials

Fully encapsulated

Compatible with RoHS soldering systems

Backward compatible with

Sn/Pb soldering systems

www.murata-ps.com

www.murata-ps.com/rohs

For full details go to

All speciﬁ cations typical at T

1 Refer to mechanical dimensions for pin locations shown in brackets.

2 With pins 2 & 6 short circuited.

ABSOLUTE MAXIMUM RATINGS

SOLDERING INFORMATION

SELECTION GUIDE

76250ENC CHARACTERISTICS

Parameter

Primary Inductance, L

Leakage Inductance, L

Interwinding Capacitance, C

D.C. Resistance, R

Volt-time Product, E

76253/35ENC CHARACTERISTICS

Parameter

Primary Inductance, L

Secondary Inductance, L

Leakage Inductance, L

Interwinding Capacitance, C

D.C. Resistance, R

Volt-time Product, E

76253/55ENC CHARACTERISTICS

Parameter

Primary Inductance, L

Secondary Inductance, L

Leakage Inductance, L

Interwinding Capacitance, C

D.C. Resistance, R

Volt-time Product, E

Operating free air temperature range 76250EN

Operating free air temperature range 76253/XXEN

Storage temperature range

Lead temperature 1.5mm from case for 10 seconds

Peak current, I

Isolation voltage (ﬂ ash tested for 1 second)

Peak wave solder temperature

Pin ﬁ nish

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

76253/35ENC

76253/55ENC

Order Code

76250ENC

76253/XXEN

76250EN

(1&5)

=25°C

(1&5)

(2&6)

Input Voltage

(1&2)

EN Approved MAX250/251/253 Compatible Converter Transformers

3.3

5.0

Conditions

10kHz, 100mV

100kHz, 100mV

<0.1V

Conditions

100kHz, 250mV

<0.1V

Conditions

100kHz, 250mV

<0.1V

76250ENC, 76253/XXENC

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

Voltage

Output

5.0

Max. Output

Min.

140

700

142

1.0

Current

100

200

1000

Typ.

KMP_7625XENC_B03 Page 1 of 4

200

2.0

1.5

1.0

5.0

2.7

0.4

7.0

2.7

0.5

Isolation

Voltage

6000

300˚C for 10 seconds

Matte tin

0°C to 70°C

-40°C to 85°C

-50°C to 125°C

300°C

300mA

400mA

6000V

Max.

10.0

150

267

2.5

3.0

2.0

7.0

3.5

0.8

3.5

0.9

+44 (0)1908 615232

1:1.33

Turns

1CT:1

Ratio

1:√5

Units

Vμs

μH

Related parts for 76250ENC

76250ENC Summary of contents

Page 1

... Fully encapsulated Compatible with RoHS soldering systems Backward compatible with Sn/Pb soldering systems DESCRIPTION The 76250ENC converter transformer is speciﬁ cally designed for use with Maxim chipsets to provide isolated RS232 interfaces. A carefully controlled turns ratio ensures consistent performance whilst a toroidal construction minimises EMI ...

Page 2

... VOLTAGE CURVES 100 EFFICIENCY CURVES 100 100 VOLTAGE DEVIATION 110 105 100 100 76250ENC, 76253/XXENC 76253/55ENC 0 100 200 300 400 Output Current (mA) 76253/55ENC 0 100 200 300 400 Output Current (mA) 76253/55ENC -50 - 100 Temperature (ºC) Technical enquiries - email: mk@murata-ps.com, tel: KMP_7625XENC_B03 Page +44 (0)1908 615232 ...

Page 3

... TUBE DIMENSIONS Tube length: 480±2.00mm (18.90±0.079"). Tube quantity: 30 Tube material: Antistatic coated clear pvc. Unless otherwise stated all dimensions in mm (inches) -0.00 +0.50 (-0.00 +0.020). www.murata-ps.com 76250ENC, 76253/XXENC EN Approved MAX250/251/253 Compatible Converter Transformers 12.00 12.50 (0.492) (0.472) 4.10 (0.161) Ø ...

Page 4

... Speciﬁ cations are subject to change without notice. www.murata-ps.com 76250ENC, 76253/XXENC EN Approved MAX250/251/253 Compatible Converter Transformers REPEATED HIGH-VOLTAGE ISOLATION TESTING It is well known that repeated high-voltage isolation testing of a barrier component can actually degrade isolation capability lesser or greater degree depending on materi- als, construction and environment ...

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