PTC thermistors
Limit temperature sensors,
SMD, EIA size 0603,
3
C tolerance
Series/Type:
B59601
Date:
July 2006
EPCOS AG 2006. Reproduction, publication and dissemination of this publication, enclosures hereto and the
information contained therein without EPCOS' prior express consent is prohibited.
Applications
DC/DC converters
Home appliances
Dimmers
Electronic ballasts
Temperature management in
automotive electronics
Over temperature protection of power
transistors and power ICs
(e.g. in battery pack, notebook)
SMPS
Features
Thermistor chip with lead-free tinned
terminations
Close tolerance
Small size
Fast and reliable response
Suitable for reflow soldering
Steep R/T curve
RoHS-compatible
Lead-free (total Pb content <0.1%),
except T
NTT
= 135
C
Options
Other T
NTT
values on request
Delivery mode
Blister tape, 180-mm reel
Dimensional drawing
Dimensions in mm
Geometry of solder pad
Recommended maximum dimensions (mm)
General technical data
Max. operating voltage
(T
A
=
40
C ... T
NTT
+15 K) V
max
32
VDC
Rated resistance
(T
A
= 25
C)
R
R
470
Tolerance of R
R
R
R
50
%
Operating temperature range
(V
V
max
)
T
op
40/ T
NTT
+15 K
C
Sensors
Limit temperature sensors, EIA size 0603, 3 C tolerance
A601
Page 2 of 9
Please read Important notes and
Cautions and warnings at the end of this document.
Electrical specifications and ordering codes
T
NTT
C
R
(T
NTT
3 K)
(V
PTC
2.5 V)
k
R
(T
NTT
+ 3 K)
(V
PTC
2.5 V)
k
R
(T
NTT
+ 10 K)
(V
PTC
7.5 V)
k
Ordering code
75
4.7
4.7
-
B59601A0075B062
85
4.7
4.7
15
B59601A0085B062
95
4.7
4.7
40
B59601A0095B062
105
4.7
4.7
40
B59601A0105B062
115
4.7
4.7
40
B59601A0115B062
125
4.7
4.7
40
B59601A0125B062
135
4.7
4.7
40
B59601A0135B062
Sensors
Limit temperature sensors, EIA size 0603, 3 C tolerance
A601
Page 3 of 9
Please read Important notes and
Cautions and warnings at the end of this document.
Reliability data
Test
Standard
Test conditions
R
25
/R
25
Electrical endurance,
constant at 85
C
IEC 60738-1
Storage at V
max
T = 85
C
Test duration : 1000 h
< 25%
Damp heat
IEC 60738-1
Temperature of air: 40
C
Relative humidity of air: 93%
Duration: 56 days
Test according to IEC 60068-2-78
< 10%
Rapid change
of temperature
IEC 60738-1
T
LCT
=
25
C, T
UCT
= 125
C
Number of cycles: 5
Test duration: 30 min
Test according to IEC 60068-2-14, Test Na
< 10%
Vibration
IEC 60738-1
Frequency: 10 - 55 - 10 Hz
Displacement amplitude: 0.75 mm
Test duration: 3 2 h
Test according to IEC 60028-2-6, Test Fc
< 5%
Bump
IEC 60738-1
Pulse shape: half-sine
Acceleration: 50 g
Pulse duration: 1 ms; 6 3 pulses
Test according to IEC 60068-2-29
< 5%
Climatic sequence
IEC 60738-1
Dry heat: T
UCT
= 125
C
Test duration: 16 h
Damp heat first cycle
Cold: T
LCT
=
25
C
Test duration: 2 h
Damp heat 5 cycles
Tests performed according to
IEC 60068-2-30
< 10%
Adhesive strength on
PCB
Shearing of the component soldered on
PCB by a force of 5 N is normal to
components longitudinal axis
No visible
damage
Sensors
Limit temperature sensors, EIA size 0603, 3 C tolerance
A601
Page 4 of 9
Please read Important notes and
Cautions and warnings at the end of this document.
Characteristics (typical)
PTC resistance R
PTC
versus
PTC temperature T
PTC
(measured at low signal voltage)
Characteristics (typical)
Sensors
Limit temperature sensors, EIA size 0603, 3 C tolerance
A601
Page 5 of 9
Please read Important notes and
Cautions and warnings at the end of this document.
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