772 datasheet(1/3 Pages) MURATA-PS

Part #	772

Description	Pulse Transformers

PDF	3 Pages

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Manufacturer	MURATA-PS [Murata Power Solutions Inc.]

Direct Link	http://www.murata-ps.com

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1 / 3 page

KMP_772C_C01 Page 1 of 3

772 Series

Pulse Transformers

www.murata-ps.com

www.murata-ps.com/support

For full details go to

www.murata-ps.com/rohs

FEATURES

RoHS compliant

Inductance to 16.3mH

Up to 482 Vμs Et rating

PCB mounting

UL 94 V-0 package materials

Up to 4000Vrms isolation

Backward compatible with

Sn/Pb soldering systems

DESCRIPTION

The 772 series of pulse transformers are intended

for medium power applications in switch mode

power supplies and thyristor/triac ﬁring (e.g.

motor control applications). The standard turns

ratios may be modiﬁed on any transformer with

three windings by connecting any two windings

in series.

SELECTION GUIDE

Parameter

Order Code

Units

Turns ratio

1:1:1

2:1:1

1:1

1:1:1

2:1:1

Primary Inductance

(Min.)

1.0

4.0

16.3

mH

Primary Et Constant

(Min.)

120

240

482

Vμs

Leakage Inductance

(Max.)

3.0

3.5

5.0

11

40

μH

Interwinding

Capacitance (Max.)

40

30

55

35

40

pF

DC Resistance (Max.)

Primary winding

0.25

0.24

0.86

0.90

3.60

3.50

Ω

DC Resistance (Max.)

Secondary1 winding

0.22

0.12

0.83

0.76

3.10

1.60

DC Resistance (Max.)

Secondary2 winding

0.28

0.15

-

1.10

4.20

2.00

Isolation voltage (ﬂash

tested for 1 second)

2.5

4.0

2.5

kVrms

SELECTION GUIDE

Parameter

Order Code

Units

Turns ratio

1:1

2:1:1

1:1:1

2:1:1

1:1

Primary Inductance

(Min.)

1.0

4.0

16.3

mH

Primary Et Constant

(Min.)

120

240

482

Vμs

Leakage Inductance

(Max.)

2.0

3.5

11

18

μH

Interwinding

Capacitance (Max.)

50

30

18

35

65

pF

DC Resistance (Max.)

Primary winding

0.25

0.24

0.90

0.84

3.50

Ω

DC Resistance (Max.)

Secondary1 winding

0.23

0.12

0.76

0.38

3.40

DC Resistance (Max.)

Secondary2 winding

-

0.15

1.10

0.50

-

Isolation voltage (ﬂash

tested for 1 second)

2.5

kVrms

Speciﬁcations typical at T

A

= 25°C

ATURES

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