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NTC thermistors for

temperature measurement

Probe assemblies

Series/Type:

Date:

B57045K

March 2013

information contained therein without EPCOS' prior express consent is prohibited.

EPCOS AG is a TDK Group Company.

Temperature measurement

Probe assemblies

B57045K

K45

Applications

Temperature compensation, measurement

and control (chassis mounting)

Features

Cost-effective

Good thermal coupling through screw-type

case (thread M3)

Electrically isolated aluminum case

Tinned copper leads

Options

Tighter resistance tolerance available on

request.

Delivery mode

Bulk

Dimensional drawing

Dimensions in mm

Approx. weight 1 g

General technical data

Climatic category

Max. power

Resistance tolerance

Rated temperature

Dissipation factor

Thermal cooling time constant

Torque

Insulation resistance

Test voltage

(IEC 60068-1)

(at 25

°C)

55/125/56

450

±10

approx. 9

approx. 20

approx. 75

approx. 15

approx. 0.5

> 100

2500

(in air)

(on chassis)

(in air)

(on chassis)

(V = 100 V DC)

(t = 1 s)

∆R

ins

test

°C

mW/K

MΩ

V AC

Please read

Cautions and warnings

and

Important notes

at the end of this document.

Page 2 of 11

Temperature measurement

Probe assemblies

B57045K

K45

Electrical specification and ordering codes

Ω

2.2 k

4.7 k

6.8 k

10 k

33 k

47 k

68 k

100 k

150 k

Reliability data

Test

Storage in

dry heat

Standard

IEC

60068-2-2

Test conditions

∆R

(typical)

< 3%

Remarks

No visible

damage

No. of R/T

characteristic

1011

1013

4001

2903

2904

1012

4003

2005

25/100

3730

±3%

3900

±3%

3950

±3%

4200

±3%

4300

±3%

4300

±3%

4450

±3%

4600

±3%

4600

±3%

4600

±3%

Ordering code

B57045K0102K000

B57045K0222K000

B57045K0472K000

B57045K0682K000

B57045K0103K000

B57045K0333K000

B57045K0473K000

B57045K0683K000

B57045K0104K000

B57045K0154K000

Storage in damp

heat, steady state

Endurance

Long-term stability

(empirical value)

Note

Storage at upper

category temperature

T: 125

°C

t: 1000 h

IEC

Temperature of air: 40

°C

60068-2-78 Relative humidity of air: 93%

Duration: 56 days

max

: 450 mW

t: 1000 h

Temperature: 100

°C

t: 10000 h

< 3%

No visible

damage

No visible

damage

No visible

damage

< 3%

< 5%

Contact of NTC thermistors with any liquids and solvents shall be prevented. It must be

ensured that no water enters the NTC thermistors (e.g. through plug terminals).

Avoid dewing and condensation unless thermistor is specified for these conditions.

Please read

Cautions and warnings

and

Important notes

at the end of this document.

Page 3 of 11

Temperature measurement

Probe assemblies

B57045K

K45

R/T characteristics

R/T No.

T (°C)

55.0

50.0

45.0

40.0

35.0

30.0

25.0

20.0

15.0

10.0

5.0

0.0

5.0

10.0

15.0

20.0

25.0

30.0

35.0

40.0

45.0

50.0

55.0

60.0

65.0

70.0

75.0

80.0

85.0

90.0

95.0

100.0

105.0

110.0

115.0

120.0

125.0

1011

1012

1013

25/100

= 3730 K

25/100

= 4300 K

25/100

= 3900 K

(%/K) R

(%/K)

70.014

49.906

36.015

26.296

19.411

14.479

10.903

8.2923

6.3591

4.9204

3.8279

3.0029

2.3773

1.8959

1.5207

1.228

1.0000

0.81779

0.67341

0.55747

0.46357

0.3874

0.32368

0.272

0.23041

0.19604

0.16735

0.14342

0.12347

0.10668

0.092734

0.080903

0.070616

0.061826

0.054282

0.047793

0.042249

6.9

6.7

6.4

6.2

6.0

5.8

5.6

5.4

5.2

5.1

4.9

4.8

4.6

4.5

4.3

4.2

4.1

3.9

3.8

3.7

3.6

3.5

3.4

3.3

3.2

3.1

3.0

2.8

2.7

2.6

2.5

2.4

87.237

62.264

44.854

32.599

23.893

17.654

13.098

9.8059

7.4266

5.6677

4.3213

3.3208

2.5842

2.0238

1.5858

1.2507

1.0000

0.7964

0.64053

0.51772

0.41958

0.34172

0.27877

0.22861

0.18872

0.15645

0.13012

0.10863

0.091115

0.0767

0.064867

0.055047

0.046797

0.039904

0.034255

0.029498

0.025448

6.8

6.7

6.5

6.3

6.1

6.0

5.8

5.7

5.5

5.4

5.3

5.1

5.0

4.9

4.8

4.7

4.5

4.4

4.3

4.2

4.1

4.0

3.9

3.8

3.7

3.6

3.5

3.4

3.3

3.2

3.1

3.0

77.285

54.938

39.507

28.722

21.099

15.652

11.715

8.8541

6.7433

5.1815

4.0099

3.1283

2.4569

1.9438

1.5475

1.2403

1.0000

0.81104

0.66146

0.54254

0.44727

0.37067

0.30865

0.25825

0.21707

0.18323

0.15535

0.13223

0.11302

0.096951

0.083487

0.072139

0.062559

0.054425

0.047508

0.041594

0.036532

7.0

6.7

6.5

6.3

6.1

5.9

5.7

5.6

5.4

5.2

5.1

4.9

4.8

4.6

4.5

4.4

4.3

4.1

4.0

3.9

3.8

3.7

3.6

3.5

3.4

3.3

3.2

3.1

3.0

2.9

2.8

2.7

2.6

Please read

Cautions and warnings

and

Important notes

at the end of this document.

Page 4 of 11

Temperature measurement

Probe assemblies

B57045K

K45

R/T characteristics

R/T No.

T (°C)

55.0

50.0

45.0

40.0

35.0

30.0

25.0

20.0

15.0

10.0

5.0

0.0

5.0

10.0

15.0

20.0

25.0

30.0

35.0

40.0

45.0

50.0

55.0

60.0

65.0

70.0

75.0

80.0

85.0

90.0

95.0

100.0

105.0

110.0

115.0

120.0

125.0

130.0

135.0

140.0

145.0

150.0

155.0

2005

2903

2904

25/100

= 4600 K

25/100

= 4200 K

25/100

= 4300 K

(%/K) R

(%/K)

120.22

85.48

61.004

43.712

31.459

22.746

16.49

12.071

8.8455

6.5446

4.8852

3.6781

2.7944

2.1391

1.6507

1.2823

1.0000

0.78393

0.61822

0.49053

0.39116

0.31371

0.25338

0.20565

0.16762

0.13726

0.11279

0.093053

0.077177

0.064263

0.053678

0.044996

0.037917

0.032063

0.027161

0.023079

0.01968

7.0

6.9

6.8

6.7

6.6

6.4

6.3

6.1

6.0

5.8

5.6

5.4

5.3

5.1

5.0

4.8

4.7

4.6

4.5

4.3

4.2

4.1

4.0

3.9

3.8

3.7

3.6

3.5

3.4

3.3

3.2

120.03

82.38

57.248

40.255

28.627

20.577

14.876

10.88

8.0808

6.0612

4.5649

3.4708

2.6625

2.0599

1.6069

1.2631

1.0000

0.79593

0.63796

0.51467

0.41887

0.34272

0.28081

0.23141

0.19211

0.16027

0.13421

0.11288

0.095326

0.080828

0.068916

0.058989

0.050701

0.043735

0.037778

0.032736

0.028513

7.7

7.4

7.2

7.0

6.7

6.6

6.4

6.1

5.9

5.8

5.6

5.4

5.2

5.1

4.9

4.8

4.6

4.5

4.4

4.2

4.1

4.0

3.9

3.8

3.7

3.6

3.5

3.4

3.3

3.2

3.1

3.0

2.9

2.8

2.7

121.46

84.439

59.243

41.938

29.947

21.567

15.641

11.466

8.451

6.2927

4.7077

3.5563

2.7119

2.086

1.6204

1.2683

1.0000

0.7942

0.63268

0.5074

0.41026

0.33363

0.27243

0.2237

0.18459

0.15305

0.12755

0.10677

0.089928

0.076068

0.064524

0.054941

0.047003

0.040358

0.034743

0.030007

0.026006

0.022609

0.01972

0.017251

0.015139

0.013321

0.011754

Page 5 of 11

7.4

7.2

7.1

6.9

6.7

6.6

6.3

6.2

6.0

5.9

5.7

5.5

5.3

5.1

5.0

4.8

4.7

4.6

4.5

4.3

4.2

4.1

4.0

3.9

3.8

3.7

3.6

3.5

3.4

3.3

3.2

3.1

3.0

2.9

2.8

2.7

2.6

2.5

Please read

Cautions and warnings

and

Important notes

at the end of this document.

参数对比

与B57045K0333K000相近的元器件有：B57045K0472K000、B57045K0103K000、B57045K0682K000、B57045K0102K000、B57045K0473K000、B57045K0222K000、B57045K0104K000、B57045K0154K000、B57045K0683K000。描述及对比如下：

型号	B57045K0333K000	B57045K0472K000	B57045K0103K000	B57045K0682K000	B57045K0102K000	B57045K0473K000	B57045K0222K000	B57045K0104K000	B57045K0154K000	B57045K0683K000
描述	RESISTOR, TEMPERATURE DEPENDENT, NTC, 33000ohm, CHASSIS MOUNT	RESISTOR, TEMPERATURE DEPENDENT, NTC, 4700ohm, CHASSIS MOUNT	RESISTOR, TEMPERATURE DEPENDENT, NTC, 10000ohm, CHASSIS MOUNT	RESISTOR, TEMPERATURE DEPENDENT, NTC, 6800ohm, CHASSIS MOUNT	RESISTOR, TEMPERATURE DEPENDENT, NTC, 1000ohm, CHASSIS MOUNT	RESISTOR, TEMPERATURE DEPENDENT, NTC, 47000ohm, CHASSIS MOUNT	RESISTOR, TEMPERATURE DEPENDENT, NTC, 2200ohm, CHASSIS MOUNT	RESISTOR, TEMPERATURE DEPENDENT, NTC, 100000ohm, CHASSIS MOUNT	RESISTOR, TEMPERATURE DEPENDENT, NTC, 150000ohm, CHASSIS MOUNT	RESISTOR, TEMPERATURE DEPENDENT, NTC, 68000ohm, CHASSIS MOUNT
是否无铅	不含铅	不含铅	不含铅	不含铅	不含铅	不含铅	不含铅	不含铅	不含铅	不含铅
是否Rohs认证	符合	符合	符合	符合	符合	符合	符合	符合	符合	符合
厂商名称	EPCOS (TDK)	EPCOS (TDK)	EPCOS (TDK)	EPCOS (TDK)	EPCOS (TDK)	EPCOS (TDK)	EPCOS (TDK)	EPCOS (TDK)	EPCOS (TDK)	EPCOS (TDK)
Reach Compliance Code	compliant	compliant	compliant	compliant	compliant	compliant	compliant	compliant	compliant	compliant
JESD-609代码	e3	e3	e3	e3	e3	e3	e3	e3	e3	e3
安装特点	CHASSIS MOUNT	CHASSIS MOUNT	CHASSIS MOUNT	CHASSIS MOUNT	CHASSIS MOUNT	CHASSIS MOUNT	CHASSIS MOUNT	CHASSIS MOUNT	CHASSIS MOUNT	CHASSIS MOUNT
端子数量	2	2	2	2	2	2	2	2	2	2
最高工作温度	125 °C	125 °C	125 °C	125 °C	125 °C	125 °C	125 °C	125 °C	125 °C	125 °C
最低工作温度	-55 °C	-55 °C	-55 °C	-55 °C	-55 °C	-55 °C	-55 °C	-55 °C	-55 °C	-55 °C
封装形状	SPECIAL PACKAGE	SPECIAL PACKAGE	SPECIAL PACKAGE	SPECIAL PACKAGE	SPECIAL PACKAGE	SPECIAL PACKAGE	SPECIAL PACKAGE	SPECIAL PACKAGE	SPECIAL PACKAGE	SPECIAL PACKAGE
包装方法	BULK	BULK	BULK	BULK	BULK	BULK	BULK	BULK	BULK	BULK
额定功率耗散 (P)	0.45 W	0.45 W	0.45 W	0.45 W	0.45 W	0.45 W	0.45 W	0.45 W	0.45 W	0.45 W
额定温度	25 °C	25 °C	25 °C	25 °C	25 °C	25 °C	25 °C	25 °C	25 °C	25 °C
电阻	33000 Ω	4700 Ω	10000 Ω	6800 Ω	1000 Ω	47000 Ω	2200 Ω	100000 Ω	150000 Ω	68000 Ω
电阻器类型	NTC THERMISTOR	NTC THERMISTOR	NTC THERMISTOR	NTC THERMISTOR	NTC THERMISTOR	NTC THERMISTOR	NTC THERMISTOR	NTC THERMISTOR	NTC THERMISTOR	NTC THERMISTOR
表面贴装	NO	NO	NO	NO	NO	NO	NO	NO	NO	NO
端子面层	Tin (Sn)	Tin (Sn)	Tin (Sn)	Tin (Sn)	Tin (Sn)	Tin (Sn)	Tin (Sn)	Tin (Sn)	Tin (Sn)	Tin (Sn)
端子形状	WIRE	WIRE	WIRE	WIRE	WIRE	WIRE	WIRE	WIRE	WIRE	WIRE
热敏指数	4300 K	3950 K	4300 K	4200 K	3730 K	4450 K	3900 K	4600 K	4600 K	4600 K
热敏电阻器应用	TEMPERATURE COMPENSATION	TEMPERATURE COMPENSATION	TEMPERATURE COMPENSATION	TEMPERATURE COMPENSATION	TEMPERATURE COMPENSATION	TEMPERATURE COMPENSATION	TEMPERATURE COMPENSATION	TEMPERATURE COMPENSATION	TEMPERATURE COMPENSATION	TEMPERATURE COMPENSATION
容差	10%	10%	10%	10%	10%	10%	10%	10%	10%	10%
Base Number Matches	1	1	1	1	1	1	1	1	1	1
ECCN代码	EAR99	-	EAR99	-	EAR99	-	EAR99	-	EAR99	EAR99
制造商序列号	B57045K	B57045K	-	B57045K	B57045K	-	-	-	B57045K	B57045K