BK250-145-SY datasheet, PDF - EEWORLD Datasheet

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BK250-145-SY: DescriptionPTC Thermistor,; CategoryPassive components The resistor; File Size691KB，9 Pages; ManufacturerYAGEO; Websitehttp://www.yageo.com/

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BK250-145-SY Overview

PTC Thermistor,

BK250-145-SY Parametric

Parameter Name	Attribute value
Maker	YAGEO
Reach Compliance Code	unknow
ECCN code	EAR99
Resistor type	PTC THERMISTOR

BK250-145-SY Preview

POSITIVE TEMPERATURE COEFFICIENT

AC/DC POWER SUPPLY

RoHS compliant & Halogen free

DATA SHEET

BK250 series

Product specification– July 05, 2019 V.0

Circuit Protection

POSITIVE TEMPERATURE COEFFICIENT

Product Specification

BK250

Positive TemperatureCoefficient(PTC)Data Sheet

Description

The 250V series provides radial resettable overcurrent protection with holding current from 0.03A to 2.0A. This

series is suitable for applications with higher working voltage up to 250V.

Features

■Radial

leaded devices

■

Over-current protection

■

High voltage surge capabilities

■Flame

retardant epoxy polymer insulating material meets UL94 V-0 requirement

■Available

in lead-free version

■

Meets MSL level 1, per J-STD-020

■Operating

Temperature: -40℃~+85℃

Applications

■Powered

supplies

■Industrial

controls

■

Automotive electronics control

module protection

■Security

systems

■Medical

equipment

■Intelligent

appliance

■Computer

accessories and related applications

Part Number Code and Making

250 -

Lead Shape

Z =Straight

I =Inner

O=Outer

Y=Front and Rear Curved

Body Shape

S =Square

D =Circular

Holding Current Rating

Voltage Rating

Brand BK

www.yageo.com

Jul. 05, 2019 V.0

Circuit Protection

POSITIVE TEMPERATURE COEFFICIENT

Product Specification

BK250

Brand BK

BK250

XXX

Voltage Rating

Holding Current Rating

Dimensions (Unit: mm)

Part

Number

BK250-030

BK250-040

BK250-060

BK250-080

BK250-090

BK250-110

BK250-120

BK250-145

BK250-180

BK250-200

BK250-400

BK250-600

BK250-800

BK250-1000

BK250-1500

BK250-2000

Max.

6.0

7.4

7.0

7.5

10.5

11.2

16.0

20.0

21.1

21.0

26.2

Max.

8.0

13.5 / 12.7

14.5 / 12.7

14.5 / 10.5

15.0 / 11.0

18.5 / 14.5

17.0

17.0/19.5

18.0

22.0

23.6

27.5

32.8

0.6

5.1

10.2

Max.

4.6

Typ.

0.6

0.8/0.6

0.8

Style

Min.

7.6

4.6 / 7.6

7.6

DY / DZ

SY / SZ

SY/SZ/DZ

SZ / DZ

SZ/SI

www.yageo.com

Jul. 05, 2019 V.0

Circuit Protection

POSITIVE TEMPERATURE COEFFICIENT

Product Specification

BK250

Electrical Characteristics

Part

Number

BK250-030

BK250-040

BK250-060

BK250-080

BK250-090

BK250-110

BK250-120

BK250-145

BK250-180

BK250-200

BK250-250

BK250-400

BK250-600

BK250-800

BK250-1000

BK250-1500

BK250-2000

(A)

Vmax

AC)

250

Imax

(A)

Pd typ.

(W)

0.6

0.7

0.8

1.0

1.5

2.0

2.5

2.7

2.9

3.9

4.5

Max. Time-to-trip

(A)

0.15

0.20

0.30

0.40

0.45

0.55

0.60

0.73

0.90

1.00

1.25

2.00

3.00

4.00

5.00

7.50

10.00

（S）

5.0

6.0

5.0

15.0

9.0

7.0

9.0

8.0

18.0

21.0

23.0

28.0

Rmin

(Ω)

35.0

27.0

20.0

10.0

7.0

6.0

3.5

10.0

3.0

1.6

1.0

0.6

0.4

0.3

0.2

0.1

Rmax

(Ω)

90.0

65.0

45.0

22.0

20.0

12.0

10.5

6.5

3.0

6.0

4.8

3.0

2.0

1.0

0.8

0.6

0.4

0.03

0.04

0.06

0.08

0.09

0.11

0.12

0.15

0.18

0.20

0.25

0.40

0.60

0.80

1.00

1.50

2.00

0.06

0.08

0.12

0.16

0.18

0.22

0.24

0.29

0.54

0.40

0.50

0.80

1.20

1.60

2.00

3.00

4.00

·I

= Hold current: maximum current device will pass without tripping in 25℃ still air.

·I

= Trip current: minimum current at which the device will trip in 25℃ still air.

·V

MAX

= Maximum voltage device can withstand without damage at rated current.

·I

MAX

= Maximum fault current device can withstand without damage at rated voltage.

·R

MAX

= Maximum resistance of device in initial (un-soldered) state.

·R

MIN

= Minimum resistance of device in initial (un-soldered) state.

·Pd

typ.

= Typical power dissipation from device when in the tripped state at 25℃ still air.

www.yageo.com

Jul. 05, 2019 V.0

Circuit Protection

POSITIVE TEMPERATURE COEFFICIENT

Product Specification

BK250

Polymeric PTC Selecting Guide

■Determine

the following operating parameters for the circuits:

Normal operating current (I

hold

)

Maximum interrupt current (I

max

)

Maximum circuit voltage (V

max

)

Normal operating temperature surrounding device (min℃/max℃)

■Select

the device from factor and dimension suitable for the application

■Compare

the maximum rating for V

max

and I

max

of the PPTC device with the circuit in application and make sure

the circuit’s requirement does not exceed the device rating.

■Check

that PPTC device’s trip time (time-to-trip) will protect the circuit.

■Verify

that the circuit operating temperature is within the PPTC device’s normal operating temperature range.

■Verify

that performance and suitability of the chosen PPTC device in the application.

WARNING

■Mechanical

Stress

PPTC devices will undergo a thermal expansion during fault condition. If PPTC devices are installed or placed in an application

where the space between PPTC devices and the surrounding materials (e.g., covering materials, packaging materials, encapsulate

materials and the like) is insufficient, it will cause an inhibiting effect upon the thermal expansion. Pressing, twisting, bending and

other kinds of mechanical stress will also adversely affect the performance of the PPTC devices, and shall not be used or applied.

■Chemical

Pollutants

Silicone-based oils, oils, solvents, gels, electrolytes, fuels, acids, and the like will adversely affect the properties of PPTC devices,

and shall not be used or applied.

■Electronic

and Thermal Effect

PPTC devices are secondary protection devices and are used solely for sporadic, accidental over-current or over-temperature

error condition, and shall NOT be used if or when constant or repeated fault conditions (such fault conditions may be caused by,

among others, incorrect pin-connection of a connector) or over-extensive trip events may occur.

PPTC devices are different from fuses and, when a fault condition occurs, will go into high-resistance state and do not open

circuit, in which case the voltage at such PPTC devices may reach a hazardous level.

Operation over the maximum rating or other forms of improper use may cause failure, arcing, flame and/or other damage to

the PPTC devices.

Conductive material contamination, such as metal particle, may induce shortage, flame or arcing.

Due to the inductance, the operation circuits may generate a circuit voltage (Ldi/dt) above the rated voltage of PPTC devices,

which shall not be used under such circumstances.

■General

Customers shall evaluate and test the properties of PPTC devices independently to verify and ensure that their individual

applications will be met.

The performance of PPTC devices will be adversely affected if they are improperly used under electronic, thermal and/or

mechanical procedures and/or conditions non-conformant to those recommended by manufacturer.

Customers shall be responsible for determining whether it is necessary to have back-up, failsafe and/or fool-proof protection

To avoid or minimize damage that may result from extra-ordinary, irregular function or failure of PPTC devices.

Any and all responsibilities and liabilities are disclaimed if any item under this notice of warning is not complied with.

www.yageo.com

Jul. 05, 2019 V.0

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BK250-145-SY Related Products

	BK250-145-SY	BK250-040-DZ	BK250-040-DY	BK250-145-SZ
Description	PTC Thermistor,	PTC Thermistor,	PTC Thermistor,	PTC Thermistor,
Maker	YAGEO	YAGEO	YAGEO	YAGEO
Reach Compliance Code	unknow	unknown	unknown	unknow
Resistor type	PTC THERMISTOR	PTC THERMISTOR	PTC THERMISTOR	PTC THERMISTOR

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