PTC thermistors as
limit temperature sensors
SMD, EIA case sizes 0402, 0603 and 0805,
superior series
Series/Type:
Date:
B59421, B59641, B59721
July 2016
© EPCOS AG 2016. Reproduction, publication and dissemination of this publication, enclosures hereto and the
information contained therein without EPCOS' prior express consent is prohibited.
EPCOS AG is a TDK Group Company.
Sensors
Limit temperature sensors, EIA sizes 0402, 0603 and 0805
Superior series
Applications
Over-temperature protection of power components
DC/DC converters
SMPS
Notebooks
Home appliances
Dimmers
Electronic ballasts
Automotive electronics
Secondary protection of battery packs
Features
Qualification based on AEC-Q200 rev. D
Reflow soldering only
Fast and reliable response
RoHS-compatible
UL approval to UL1434
Certified in accordance with IEC 60738-1 and IEC 60730-1; Annex J15 and J17
Lead-free terminations (tinned) for EIA case sizes 0603 and 0805
Lead-free ceramics for EIA case sizes 0402 and 0805, except B59421A0135A062
Options
Other T
sense
or resistance values on request
Delivery mode
Blister tape (EIA case size 0805) or cardboard tape (EIA case sizes 0402 and 0603),
180-mm reel with 8-mm tape, taping to IEC 60286-3
Packing unit: 10.000 pcs. for EIA case size 0402, 4.000 pcs. for EIA case sizes 0805 and
0603
General technical data
Max. operating voltage
Minimum operating temperature
Maximum operating temperature
(V
≤
V
max
)
(V
≤
V
max
)
V
max
T
op,min
T
op,max
32
40
125
°C
or T
sense,1
+25
°C
whichever is higher
V DC
°C
°C
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 2 of 35
Sensors
Limit temperature sensors, EIA sizes 0402, 0603 and 0805
Superior series
Electrical specifications and ordering codes
EIA case sizes 0402 and 0603
R
R
(V
≤
V
max
)
Ω
∆R
R
%
T
sense,1
(@ 4.7 kΩ)
°C
T
sense,2
(@ 47 kΩ)
°C
Ordering code
EIA case size 0402
470
±50
75
±5
-
B59421A0075A062
470
±50
85
±5
-
B59421A0085A062
470
±50
95
±5
-
B59421A0095A062
470
±50
105
±5
-
B59421A0105A062
470
±50
115
±5
-
B59421A0115A062
470
±50
125
±5
-
B59421A0125A062
470
±50
135
±5
-
B59421A0135A062
EIA case size 0603
470
±50
75
±5
90
±7
B59641A0075A062
470
±50
85
±5
100
±7
B59641A0085A062
470
±50
95
±5
110
±7
B59641A0095A062
470
±50
105
±5
120
±7
B59641A0105A062
470
±50
115
±5
130
±7
B59641A0115A062
470
±50
125
±5
140
±7
B59641A0125A062
470
±50
135
±5
150
±7
B59641A0135A062
470
±50
145
±5
-
B59641A0145A062
Note:
In order to limit self heating effects the electrical power during measurement should be below
2 mW for EIA case size 0402 and below 4 mW for EIA case size 0603.
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 3 of 35
Sensors
Limit temperature sensors, EIA sizes 0402, 0603 and 0805
Superior series
Electrical specifications and ordering codes
EIA case size 0805
R
R
(V
≤
V
max
)
Ω
∆R
R
T
sense,1
R
R
(T
sense,1
5°C) (T
sense,1
+5°C)
%
°C
kΩ
kΩ
R
(T
sense,1
+15°C)
kΩ
Ordering code
EIA case size 0805
680
±50
70
≤
5.7
≥
5.7
≥
40
1)
B59721A0070A062
680
±50
80
≤
5.7
≥
5.7
≥
40
1)
B59721A0080A062
680
±50
90
≤
5.5
≥
13.3
≥
40
B59721A0090A062
680
±50
100
≤
5.5
≥
13.3
≥
40
B59721A0100A062
680
±50
110
≤
5.5
≥
13.3
≥
40
B59721A0110A062
680
±50
120
≤
5.5
≥
13.3
≥
40
B59721A0120A062
680
±50
130
≤
5.5
≥
13.3
≥
40
B59721A0130A062
Note:
In order to limit self heating effects the electrical power during measurement should be below
6 mW for EIA case size 0805.
1) R (T
sense,1
+25
°C)
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 4 of 35
Sensors
Limit temperature sensors, EIA sizes 0402, 0603 and 0805
Superior series
Dimensional drawings in mm
EIA case size 0402
Solder pad
Recommended maximum dimensions (mm)
EIA case size 0603
Solder pad
Recommended maximum dimensions (mm)
EIA case size 0805
Solder pad
Recommended maximum dimensions (mm)
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 5 of 35
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