B82801A0743A030 datasheet, PDF

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B82801A0743A030: DescriptionCurrent Sense Transformer, 7A, 1:30, ROHS COMPLIANT; CategoryPower management transformer; File Size504KB，9 Pages; ManufacturerTDK Corporation; Websitehttp://www.tdk.com; Environmental Compliance

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B82801A0743A030 Overview

Current Sense Transformer, 7A, 1:30, ROHS COMPLIANT

B82801A0743A030 Parametric

Parameter Name	Attribute value
Is it Rohs certified?	conform to
Maker	TDK Corporation
package instruction	CHIP
Reach Compliance Code	compliant
ECCN code	EAR99
high	3.5 mm
length	4.7 mm
Load Resistance	0.8 Ω
Installation features	SURFACE MOUNT
Maximum operating frequency	1000 kHz
Minimum operating frequency	50 kHz
Maximum operating temperature	130 °C
Minimum operating temperature	-40 °C
method of packing	TAPE & REEL
Peak primary current	7 A
physical size	L4.7XB3.5XH3.5 (mm)
primary type	WOUND PRIMARY
secondary inductance	74 µH
surface mount	YES
Transformer type	CURRENT SENSE TRANSFORMER
Turns ratio (Np:Ns)	1:30
width	3.5 mm

B82801A0743A030 Preview

SMT current sense transformers

EE 4.2 core

Series/Type:

Date:

B82801A

a~í~=pÜÉÉí

December 2012

EPCOS AG 2012. Reproduction, publication and dissemination of this publication, enclosures

hereto and the information contained therein without EPCOS’ prior express consent is prohibited.

SMT current sense transformers

SMT current sensor transformers

Applications

■

B82801A

EE 4.2

Switching power supplies

Feedback control

Overload sensing

Load drop/shut down detection

Features

■

Very low DC resistance

Different turns ratios

Very small package

RoHS compatible

Marking

No marking on component

Delivery mode and packing units

■

12 mm blister tape, 178 mm

reel

■

Carton packaging

■

Packing units: 600 pcs./reel;

3000 pcs./carton

Please read

Cautions and warnings

and

Important notes

at the end of this document.

12/12

SMT current sense transformers

SMT current sensor transformers

Dimensional drawing

B82801A

EE 4.2

Dimensions in mm

Application circuit and pinning

Please read

Cautions and warnings

and

Important notes

at the end of this document.

12/12

SMT current sense transformers

B82801A

EE 4.2

Technical data and measuring conditions

Frequency range

Hi-pot

Inductance L (1-2)

DC resistance R

max

Sensed current

Solderability

50 kHz ... 1 MHz

500 V AC, 2 s (winding to winding)

100 kHz, 100 mV, @ +25 °C

Measured at +25 °C

The max. primary current of 7 A causes approx. +40 °C

temperature rise

99.9 Sn, lead-free. Or

Sn96.5Ag3.0Cu0.5: +(245

°C, (3

r03)

Wetting of soldering area

95%

(to IEC 60068-2-58)

+(260

5) °C, (10

1) s to IEC 60068-2-58

–20 °C … +40 °C,

75% RH

50 Hz, 1 s

°C … +125 °C

Approx. 0.15 g

Resistance to soldering heat

Storage conditions

Test voltage V

test

Operating temperature range

Weight

Please read

Cautions and warnings

and

Important notes

at the end of this document.

12/12

SMT current sense transformers

B82801A

EE 4.2

max

With:

max

osc

sense

max

-----------------------------------------

osc

Maximum magnetic flux density in the ferrite core of the current sense transformer

Maximum duty cycle

Number of turns of the secondary winding of the current sense transformer

Effective magnetic area of the ferrite core

Operating frequency of the switching operator IC

sense,max

Maximum output voltage of the measurement signal

Typical value for A

: 1.44 x 10

-6

Typical B

max

: 200 mT

sense

max

----------------------------------

prim

max

With:

sense,max

prim,max

Resistance of burden resistor

Maximum output voltage of the measurement signal

Number of turns on the secondary side of the CT

Maximum primary current (peak current)

Characteristics and ordering codes

min

132

205

295

400

820

1280

1840

Turns ratio DC resistance

max

(m:)

: N

1 : 20

1 : 30

1 : 40

1 : 50

1 : 60

1 : 70

1 : 100

1 : 125

1 : 150

primary

2.5

secondary

320

800

1300

2200

3600

4600

8700

13000

21000

Voltage-

Recomm. Ordering code

time product R

μs

5.76

8.6

11.5

14.4

17.3

20.0

28.8

36.0

43.2

100

125

150

B82801A0333A020

B82801A0743A030

B82801A0134A040

B82801A0214A050

B82801A0304A060

B82801A0404A070

B82801A0824A100

B82801A0135A125

B82801A0185A150

Please read

Cautions and warnings

and

Important notes

at the end of this document.

12/12

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Description	Current Sense Transformer, 7A, 1:30, ROHS COMPLIANT	Current Sense Transformer, 7A, 1:40, ROHS COMPLIANT	Current Sense Transformer, 7A, 1:125, ROHS COMPLIANT	Current Sense Transformer, 7A, 1:50, ROHS COMPLIANT	Current Sense Transformer, 7A, 1:60, ROHS COMPLIANT	Current Sense Transformer, 7A, 1:20, ROHS COMPLIANT	Current Sense Transformer, 7A, 1:70, ROHS COMPLIANT	Current Sense Transformer, 7A, 1:100, ROHS COMPLIANT
Is it Rohs certified?	conform to	conform to	conform to	conform to	conform to	conform to	conform to	conform to
Maker	TDK Corporation	TDK Corporation	TDK Corporation	TDK Corporation	TDK Corporation	TDK Corporation	TDK Corporation	TDK Corporation
package instruction	CHIP	CHIP	CHIP	CHIP	CHIP	CHIP	CHIP	CHIP
Reach Compliance Code	compliant	compliant	compliant	compliant	compliant	compliant	compliant	compliant
ECCN code	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99
high	3.5 mm	3.5 mm	3.5 mm	3.5 mm	3.5 mm	3.5 mm	3.5 mm	3.5 mm
length	4.7 mm	4.7 mm	4.7 mm	4.7 mm	4.7 mm	4.7 mm	4.7 mm	4.7 mm
Load Resistance	0.8 Ω	1.3 Ω	13 Ω	2.2 Ω	3.6 Ω	0.32 Ω	4.6 Ω	8.7 Ω
Installation features	SURFACE MOUNT	SURFACE MOUNT	SURFACE MOUNT	SURFACE MOUNT	SURFACE MOUNT	SURFACE MOUNT	SURFACE MOUNT	SURFACE MOUNT
Maximum operating frequency	1000 kHz	1000 kHz	1000 kHz	1000 kHz	1000 kHz	1000 kHz	1000 kHz	1000 kHz
Minimum operating frequency	50 kHz	50 kHz	50 kHz	50 kHz	50 kHz	50 kHz	50 kHz	50 kHz
Maximum operating temperature	130 °C	130 °C	130 °C	130 °C	130 °C	130 °C	130 °C	130 °C
Minimum operating temperature	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C
method of packing	TAPE & REEL	TAPE & REEL	TAPE & REEL	TAPE & REEL	TAPE & REEL	TAPE & REEL	TAPE & REEL	TAPE & REEL
Peak primary current	7 A	7 A	7 A	7 A	7 A	7 A	7 A	7 A
physical size	L4.7XB3.5XH3.5 (mm)	L4.7XB3.5XH3.5 (mm)	L4.7XB3.5XH3.5 (mm)	L4.7XB3.5XH3.5 (mm)	L4.7XB3.5XH3.5 (mm)	L4.7XB3.5XH3.5 (mm)	L4.7XB3.5XH3.5 (mm)	L4.7XB3.5XH3.5 (mm)
primary type	WOUND PRIMARY	WOUND PRIMARY	WOUND PRIMARY	WOUND PRIMARY	WOUND PRIMARY	WOUND PRIMARY	WOUND PRIMARY	WOUND PRIMARY
secondary inductance	74 µH	132 µH	1280 µH	205 µH	295 µH	33 µH	400 µH	820 µH
surface mount	YES	YES	YES	YES	YES	YES	YES	YES
Transformer type	CURRENT SENSE TRANSFORMER	CURRENT SENSE TRANSFORMER	CURRENT SENSE TRANSFORMER	CURRENT SENSE TRANSFORMER	CURRENT SENSE TRANSFORMER	CURRENT SENSE TRANSFORMER	CURRENT SENSE TRANSFORMER	CURRENT SENSE TRANSFORMER
Turns ratio (Np:Ns)	1:30	1:40	1:125	1:50	1:60	1:20	1:70	1:100
width	3.5 mm	3.5 mm	3.5 mm	3.5 mm	3.5 mm	3.5 mm	3.5 mm	3.5 mm

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