PTC thermistors for
overcurrent protection
SMDs, EIA sizes 3225 and 4032, 24 V
Series/Type: B59101, B59201, B59301
Date: February 2012
© EPCOS AG 2012. Reproduction, publication and dissemination of this publication, enclosures hereto and the
information contained therein without EPCOS' prior express consent is prohibited.
Applications
Overcurrent protection
Short circuit protection
Features
Molded epoxy encapsulation,
lead-free tinned solder terminals
Suitable for wave and reflow soldering
Suitable for automatic placement
Qualification based on AEC-Q200, Rev. D
RoHS-compatible
Delivery mode
Blister tape, 330-mm reel with 16-mm tape,
taping to IEC 60286-3
Dimensional drawing
Dimensions (mm)
Type h ±0.5 w ±0.5 l ±0.5 a ±0.3 Size
Reference temperature Tref =80°C
P1101 3.3 6.3 8.0 1.7 3225
P1201 3.3 6.3 8.0 1.7 3225
P1301 3.3 8.0 10.0 2.3 4032
Reference temperature Tref = 120 °C
P1101 3.3 6.3 8.0 1.7 3225
P1201 3.3 6.3 8.0 1.7 3225
P1301 3.3 8.0 10.0 2.3 4032
Geometry of solder pads
EIA case size 3225
Recommended maximum dimensions (mm)
EIA case size 4032
General technical data
Max. operating voltage (TA=60°C) Vmax 30 V DC or V AC
Rated voltage VR24 V DC or V AC
Switching cycles N 100
Tolerance of RR∆RR±25 %
Operating temperature range (V = 0) Top 40/+125 °C
Operating temperature range (V = Vmax) Top 40/+60 °C
Overcurrent protection
SMDs, EIA sizes 3225 and 4032, 24 V
Page 2 of 6Please read Cautions and warnings and
Important notes at the end of this document.
Electrical specifications and ordering codes
Type IR
mA
IS
mA
ISmax
(V = Vmax)
A
Ir
(typ.)
(V = Vmax)
mA
RR
Ω
Rmin
Ω
Ordering code
Reference temperature Tref =80°C
P1301 205 420 1.6 38 3.1 1.85 B59301P1080A062
P1201 165 340 1.0 34 4.6 2.70 B59201P1080A062
P1101 90 185 0.7 25 13 7.80 B59101P1080A062
Reference temperature Tref = 120 °C
P1301 310 640 1.6 53 3.1 1.85 B59301P1120A062
P1201 265 545 1.0 45 4.6 2.70 B59201P1120A062
P1101 170 355 0.7 35 13 7.80 B59101P1120A062
Reliability data
Test Standard Test conditions ∆R25/R25
Electrical endurance,
cycling
IEC 60738-1 Room temperature, ISmax; Vmax
Number of cycles: 100
< 25%
Electrical endurance,
constant
IEC 60738-1 Storage at Vmax /Top,max (Vmax)
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 T1= Top,min (0 V), T2= Top,max (0 V)
Number of cycles: 5
Test duration: 30 min
Test according to IEC 60068-2-14, test Na
< 10%
Shock IEC 60738-1 Acceleration: 390 m/s2
Pulse duration: 6 ms; 6 ×4000 pulses
< 5%
Bending test IEC 60738-1 Components reflow-soldered to test board
Maximum bending: 2 mm
Test according to IEC 60068-2-21, test Ue
< 10%
Overcurrent protection
SMDs, EIA sizes 3225 and 4032, 24 V
Page 3 of 6Please read Cautions and warnings and
Important notes at the end of this document.
Characteristics (typical) for Tref =80°C
PTC resistance RPTC versus
PTC temperature TPTC
(measured at low signal voltage)
PTC current IPTC versus PTC voltage VPTC
(measured at 25 °C in still air)
Switching time tSversus switching current IS
(measured at 25 °C in still air)
Rated current IRversus ambient temperature TA
(measured in still air)
Overcurrent protection
SMDs, EIA sizes 3225 and 4032, 24 V
Page 4 of 6Please read Cautions and warnings and
Important notes at the end of this document.
Characteristics (typical) for Tref = 120 °C
PTC resistance RPTC versus
PTC temperature TPTC
(measured at low signal voltage)
PTC current IPTC versus PTC voltage VPTC
(measured at 25 °C in still air)
Switching time tSversus switching current IS
(measured at 25 °C in still air)
Rated current IRversus ambient temperature TA
(measured in still air)
Overcurrent protection
SMDs, EIA sizes 3225 and 4032, 24 V
Page 5 of 6Please read Cautions and warnings and
Important notes at the end of this document.
The following applies to all products named in this publication:
1. Some parts of this publication contain statements about the suitability of our products for
certain areas of application. These statements are based on our knowledge of typical re-
quirements that are often placed on our products in the areas of application concerned. We
nevertheless expressly point out that such statements cannot be regarded as binding
statements about the suitability of our products for a particular customer application.
As a rule, EPCOS is either unfamiliar with individual customer applications or less familiar
with them than the customers themselves. For these reasons, it is always ultimately incum-
bent on the customer to check and decide whether an EPCOS product with the properties de-
scribed in the product specification is suitable for use in a particular customer application.
2. We also point out that in individual cases, a malfunction of electronic components or
failure before the end of their usual service life cannot be completely ruled out in the
current state of the art, even if they are operated as specified. In customer applications
requiring a very high level of operational safety and especially in customer applications in
which the malfunction or failure of an electronic component could endanger human life or
health (e.g. in accident prevention or lifesaving systems), it must therefore be ensured by
means of suitable design of the customer application or other action taken by the customer
(e.g. installation of protective circuitry or redundancy) that no injury or damage is sustained by
third parties in the event of malfunction or failure of an electronic component.
3. The warnings, cautions and product-specific notes must be observed.
4. In order to satisfy certain technical requirements, some of the products described in this
publication may contain substances subject to restrictions in certain jurisdictions (e.g.
because they are classed as hazardous). Useful information on this will be found in our Ma-
terial Data Sheets on the Internet (www.epcos.com/material). Should you have any more de-
tailed questions, please contact our sales offices.
5. We constantly strive to improve our products. Consequently, the products described in this
publication may change from time to time. The same is true of the corresponding product
specifications. Please check therefore to what extent product descriptions and specifications
contained in this publication are still applicable before or when you place an order. We also
reserve the right to discontinue production and delivery of products. Consequently, we
cannot guarantee that all products named in this publication will always be available. The
aforementioned does not apply in the case of individual agreements deviating from the fore-
going for customer-specific products.
6. Unless otherwise agreed in individual contracts, all orders are subject to the current ver-
sion of the "General Terms of Delivery for Products and Services in the Electrical In-
dustry" published by the German Electrical and Electronics Industry Association
(ZVEI).
7. The trade names EPCOS, BAOKE, Alu-X, CeraDiode, CSMP, CSSP, CTVS, DeltaCap,
DigiSiMic, DSSP, FormFit, MiniBlue, MiniCell, MKD, MKK, MLSC, MotorCap, PCC,
PhaseCap, PhaseCube, PhaseMod, PhiCap, SIFERRIT, SIFI, SIKOREL, SilverCap,
SIMDAD, SiMic, SIMID, SineFormer, SIOV, SIP5D, SIP5K, ThermoFuse, WindCap are trade-
marks registered or pending in Europe and in other countries. Further information will be
found on the Internet at www.epcos.com/trademarks.
Important notes
Page 6 of 6
