EPCOS EPC B57861-S103 Datasheet

NTC thermistors for
temperature measurement

Miniature sensors
with bendable wires

Series/Type: B57861S

Date: March 2013

© EPCOS AG 2013. Reproduction, publication and dissemination of this publication, enclosures hereto and the
information contained therein without EPCOS' prior express consent is prohibited.

Temperature measurement B57861S

Miniature sensors with bendable wires S861

Applications

Temperature measurement

Features

Dimensional drawings
Length
50 mm 350 mm

Short response time
High measuring accuracy
Tight B value tolerances
available
Epoxy resin encapsulation
PTFE-insulated leads of
silver-plated nickel wire,
AWG 30 (50 mm)
PTFE-insulated leads of
silver-plated Cu wire
(19 x 0.07 mm),
AWG 28 (350 mm)
UL approval (E69802)

Options

Alternative lead lengths on
request

Dimensions in mm

Delivery mode

Bulk

General technical data

Climatic category (IEC 60068-1) 55/155/56
Max. power (at 25 °C) P

60 mW

25

Resistance tolerance ∆RR/RR±1, ±3, ±5 %
Rated temperature T
Dissipation factor (in air) δ
Thermal cooling time constant (in air) τ
Heat capacity C

th

c

25 °C

R

approx. 1.5 / 3.2
approx. 15 / 12
approx. 22.5 / 38.41)mJ/K

th

1)

1)

mW/K
s

1) For PTFE-insulated leads of silver-plated Cu wire (19 x 0.07 mm), AWG 28 (350 mm).

Important notes at the end of this document.

Page 2 of 20Please read Cautions and warnings and

Temperature measurement B57861S

Miniature sensors with bendable wires S861

Electrical specification and ordering codes

25

Component length
mm

No. of R/T
characteristic

B
K

25/100

Ordering code

R

Ω

B value tolerance = 0.3%, resistance tolerance = ±1%

5 k 50 8016 3988 ±0.3% B57861S0502F045
10 k 50 8016 3988 ±0.3% B57861S0103F045
30 k 50 8018 3964 ±0.3% B57861S0303F045

B value tolerance = 1%, resistance tolerance = ±1%
10 k 350 8016 3988 ±1% B57861S0103A039
B value tolerance = 1.0%, resistance tolerance = ±1%, ±3% or ±5%

2 k 50 1008 3560 ±1% B57861S0202+040

3 k 50 8016 3988 ±1% B57861S0302+040

5 k 50 8016 3988 ±1% B57861S0502+040
10 k 50 8016 3988 ±1% B57861S0103+040
30 k 50 8018 3964 ±1% B57861S0303+040
50 k 50 2901 3760 ±1% B57861S0503+040

+ = Resistance tolerance

F = ±1%
H = ±3%
J = ±5%

Reliability data

Test Standard Test conditions ∆R25/R

(typical)

Storage in
dry heat

IEC
60068-2-2

Storage at upper
category temperature

< 2% No visible

T: 155 °C
t: 1000 h

Storage in damp
heat, steady state

IEC
60068-2-78

Temperature of air: 40 °C
Relative humidity of air: 93%

< 1% No visible

Duration: 56 days

Rapid temperature
cycling

IEC
60068-2-14

Lower test temperature: 55 °C
Upper test temperature: 155 °C

< 1% No visible

Number of cycles: 100

Endurance P

: 60 mW

max

< 3% No visible

t: 1000 h

Long-term stability
(empirical value)

Important notes at the end of this document.

Temperature: 70 °C
t: 10000 h

Page 3 of 20Please read Cautions and warnings and

< 2% No visible

Remarks

25

damage

damage

damage

damage

damage

Temperature measurement B57861S

Miniature sensors with bendable wires S861

Reliability data according to AEC Q200, Rev. D

Test Standard Test conditions ∆R25/R

25

Remarks

(typical)
High temperature
exposure (storage)
Biased humidity MIL-STD-202,

MIL-STD-202,
method 108

method 103

Storage at T = +125 °C
t = 1000 h
T = 85 °C
Relative humidity of air 85%

< 2% No visible

damage

< 2 %

No visible
damage

t = 1000 h
Test voltage max. 0.3 V DC on

1)

NTC

Operational life MIL-STD-202,

method 108

T = +125 °C
t = 1000 h

< 2%

No visible
damage

Test voltage max. 0.3 V DC on

1)

NTC
Temperature
cycling

JESD 22,
method JA-104

Lower test temperature: 55 °C

Upper test temperature: 125 °C

< 2% No visible

damage
1000 cycles
Dwell time: max. 30 min at each
temperature
Transition time in air: max. 1 min

Terminal strength
(leaded)

Mechanical shock MIL-STD-202,

MIL-STD-202,
method 211

method 213,
condition C

Test leaded device integrity
Condition A: 2.27 N

Acceleration: 40 g

2)

2)

Pulse duration: 6 ms
Number of bumps: 3, each

< 1%

< 1%

No visible

damage

No visible

damage

direction

Vibration MIL-STD-202,

method 204

Acceleration: 5 g
t = 20 min

< 1% No visible

damage
12 cycles in each of 3 directions
Frequency range: 10 to 2000 Hz

1) Self heating of the NTC thermistor must not exceed 0.2 K, steady state. Test conditions deviating from AEC Q200, Rev.D.

2) Deviating from AEC Q200, Rev. D.

Note

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.

Important notes at the end of this document.

Page 4 of 20Please read Cautions and warnings and

Temperature measurement B57861S

Miniature sensors with bendable wires S861

R/T characteristics

R/T No.
T (°C) B

1008 2901

= 3560 K B

25/100

RT/R

25

α (%/K) RT/R

25/100

= 3760 K

25

55.0 53.104 6.1 63.969 6.7
50.0 39.318 6.0 46.179 6.4
45.0 29.325 5.8 33.738 6.2
40.0 22.03 5.7 24.927 6.0
35.0 16.666 5.5 18.611 5.8

30.0 12.696 5.4 14.033 5.6
25.0 9.7251 5.2 10.679 5.4
20.0 7.5171 5.1 8.198 5.3
15.0 5.8353 4.9 6.3123 5.2
10.0 4.5686 4.8 4.9014 5.1

5.0 3.605 4.7 3.821 4.9

0.0 2.8665 4.5 3.0027 4.7

5.0 2.2907 4.4 2.3801 4.6

10.0 1.8438 4.3 1.9 4.5

15.0 1.492 4.1 1.5257 4.3

20.0 1.2154 4.0 1.233 4.3

25.0 1.0000 3.9 1.0000 4.1

30.0 0.82976 3.8 0.81679 4.0

35.0 0.68635 3.7 0.67166 3.9

40.0 0.57103 3.6 0.55527 3.8

45.0 0.48015 3.5 0.46095 3.8

50.0 0.40545 3.4 0.38459 3.7

55.0 0.3417 3.3 0.32184 3.6

60.0 0.28952 3.2 0.27068 3.5

65.0 0.24714 3.1 0.22907 3.3

70.0 0.21183 3.1 0.19468 3.2

75.0 0.18194 3.0 0.16607 3.1

80.0 0.1568 2.9 0.14221 3.1

85.0 0.13592 2.8 0.12218 3.0

90.0 0.11822 2.8 0.10533 2.9

95.0 0.1034 2.7 0.09123 2.8

100.0 0.090741 2.6 0.079284 2.8

105.0 0.079642 2.6 0.069062 2.7

110.0 0.070102 2.5 0.06034 2.7

115.0 0.061889 2.4 0.052886 2.6

120.0 0.054785 2.4 0.046482 2.5

125.0 0.048706 2.3 0.040985 2.5

130.0 0.043415 2.3 0.036233 2.5

135.0 0.038722 2.2 0.032101 2.4

140.0 0.034615 2.2 0.02851 2.4

145.0 0.031048 2.1 0.025373 2.3

150.0 0.02791 2.1 0.022633 2.3

155.0 0.025193 2.0 0.020231 2.3

α (%/K)

Important notes at the end of this document.

Page 5 of 20Please read Cautions and warnings and

Temperature measurement B57861S

Miniature sensors with bendable wires S861

R/T No.
T (°C) B

1008 2901

= 3560 K B

25/100

RT/R

25

160.0 0.02279 2.0

165.0 0.020667 2.0

170.0 0.01878 1.9

175.0 0.01709 1.9

180.0 0.015582 1.8

185.0 0.014227 1.8

190.0 0.013012 1.8

195.0 0.011934 1.7

200.0 0.010964 1.7

205.0 0.0101 1.7

210.0 0.0093191 1.6

215.0 0.0085949 1.6

220.0 0.0079384 1.6

225.0 0.0073411 1.5

230.0 0.006798 1.5

235.0 0.0063087 1.5

240.0 0.0058623 1.5

245.0 0.0054487 1.4

250.0 0.0050705 1.4

25/100

α (%/K) RT/R

 
 

 
 
 
 
 

 
 
 
 
 

 
 
 
 
 

 
 

= 3760 K

25

α (%/K)

Important notes at the end of this document.

Page 6 of 20Please read Cautions and warnings and