PTC thermistors as heating elements
Metallized rectangular disks, 230 V
Series/Type: B59102
Date: February 2014
© EPCOS AG 2015. 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.
Applications
Home appliances
hair curlers
fan heaters
coffee machines
glue guns
Features
Aluminum metallization
Suitable for clamp contacting
Self-regulating
UL approval to UL 1434 (file number E69802),
except Tref = 240 °C. UL approval for
Tref = 220 °C and 270 °C with Vmax = 140 V
and VR= 120 V.
RoHS-compatible
Options
Other dimensions and ratings on request
Delivery mode
Packed in cardboard boxes
Dimensional drawing
Dimensions in mm
General technical data
Max. operating voltage Vmax 265 V AC
Rated voltage VR230 V AC
Operating temperature range (V = 0) Top 40/+200 °C
Operating temperature range (V = VR; Tref ≤60 °C) Top 40/+60 °C
Operating temperature range (V = VR; Tref >60°C) Top 40/+100 °C
Tolerance of RR∆RR±50 %
Curvature < 0.05 mm
Heating elements
Metallized rectangular disks, 230 V R102
Page 2 of 9Please read Cautions and warnings and
Important notes at the end of this document.
1) Measured between points
2) T (RPTC = Rmin) < 25 °C
Electrical specifications and ordering codes
Tref
(typ.)
°C
VBD
V
Rmin
(V = VR)
Ω
Tsurf 1)
(V = VR)
°C
RR
(Vmeas ≤1.5 V)
Ω
Ordering code
50 400 2252) 100 700 B59102R0050A010
70 400 130 115 700 B59102R0070A010
90 400 115 130 700 B59102R0090A010
110 400 100 145 700 B59102R0110A010
130 400 105 160 700 B59102R0130A010
150 400 90 180 700 B59102R0150A010
180 400 66 205 700 B59102R0180A010
220 400 80 240 1000 B59102R0220A010
240 400 75 255 1000 B59102R0240A010
270 340 85 280 1300 B59102R0270A010
Reliability data
Test Standard Test conditions ∆R25/R25
Electrical endurance,
cycling
IEC 60738-1 Room temperature, Vmax
Number of cycles: 10 000
< 25%
Electrical endurance,
constant
IEC 60738-1 Storage at Vmax/Top,max (VR)
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
< 25%
Heating elements
Metallized rectangular disks, 230 V R102
Page 3 of 9Please read Cautions and warnings and
Important notes at the end of this document.
Characteristics (typical)
PTC resistance RPTC versus
PTC temperature TPTC
(measured at low signal voltage)
PTC resistance RPTC versus
PTC temperature TPTC
(measured at low signal voltage)
PTC resistance RPTC versus
PTC temperature TPTC
(measured at low signal voltage)
Heating elements
Metallized rectangular disks, 230 V R102
Page 4 of 9Please read Cautions and warnings and
Important notes at the end of this document.
Cautions and warnings
General
EPCOS thermistors are designed for specific applications and should not be used for purposes
not identified in our specifications, application notes and data books unless otherwise agreed
with EPCOS during the design-in-phase.
Ensure suitability of thermistor through reliability testing during the design-in phase. The ther-
mistors should be evaluated taking into consideration worst-case conditions.
Storage
Store thermistors only in original packaging. Do not open the package before storage.
Storage conditions in original packaging: storage temperature 25 °C ... +45 °C, relative hu-
midity ≤75% annual mean, maximum 95%, dew precipitation is inadmissible.
Avoid contamination of thermistors surface during storage, handling and processing.
Avoid storage of thermistor in harmful environment with effect on function on long-term opera-
tion (examples given under operation precautions).
Use thermistor within the following period after delivery:
Through-hole devices (housed and leaded PTCs): 24 months
Motor protection sensors, glass-encapsulated sensors and probe assemblies: 24 months
Telecom pair and quattro protectors (TPP, TQP): 24 months
Leadless PTC thermistors for pressure contacting: 12 months
Leadless PTC thermistors for soldering: 6 months
SMDs in EIA sizes 3225 and 4032, and for PTCs with metal tags: 24 months
SMDs in EIA sizes 0402, 0603, 0805 and 1210: 12 months
Handling
PTCs must not be dropped. Chip-offs must not be caused during handling of PTCs.
Components must not be touched with bare hands. Gloves are recommended.
Avoid contamination of thermistor surface during handling.
Soldering (where applicable)
Use rosin-type flux or non-activated flux.
Insufficient preheating may cause ceramic cracks.
Rapid cooling by dipping in solvent is not recommended.
Complete removal of flux is recommended.
Standard PTC heaters are not suitable for soldering.
Heating elements
Metallized rectangular disks, 230 V R102
Page 5 of 9Please read Cautions and warnings and
Important notes at the end of this document.
Mounting
Electrode must not be scratched before/during/after the mounting process.
Contacts and housing used for assembly with thermistor have to be clean before mounting. Es-
pecially grease or oil must be removed.
When PTC thermistors are encapsulated with sealing material, the precautions given in chapter
"Mounting instructions", "Sealing and potting" must be observed.
When the thermistor is mounted, there must not be any foreign body between the electrode of
the thermistor and the clamping contact.
The minimum force of the clamping contacts pressing against the PTC must be 10 N.
During operation, the thermistor’s surface temperature can be very high. Ensure that adjacent
components are placed at a sufficient distance from the thermistor to allow for proper cooling at
the thermistors.
Ensure that adjacent materials are designed for operation at temperatures comparable to the
surface temperature of thermistor. Be sure that surrounding parts and materials can withstand
this temperature.
Avoid contamination of thermistor surface during processing.
Operation
Use thermistors only within the specified temperature operating range.
Use thermistors only within the specified voltage and current ranges.
Environmental conditions must not harm the thermistors. Use thermistors only in normal at-
mospheric conditions. Avoid use in deoxidizing gases (chlorine gas, hydrogen sulfide gas, am-
monia gas, sulfuric acid gas etc), corrosive agents, humid or salty conditions. Contact with any
liquids and solvents should be prevented.
Be sure to provide an appropriate fail-safe function to prevent secondary product damage
caused by abnormal function (e.g. use VDR for limitation of overvoltage condition).
This listing does not claim to be complete, but merely reflects the experience of EPCOS AG.
Heating elements
Metallized rectangular disks, 230 V R102
Page 6 of 9Please read Cautions and warnings and
Important notes at the end of this document.
Symbols and terms
Symbol Term
A Area
C Capacitance
Cth Heat capacity
f Frequency
I Current
Imax Maximum current
IRRated current
Ires Residual current
IPTC PTC current
IrResidual currrent
Ir,oil Residual currrent in oil (for level sensors)
Ir,air Residual currrent in air (for level sensors)
IRMS Root-mean-square value of current
ISSwitching current
ISmax Maximum switching current
LCT Lower category temperature
N Number (integer)
NcOperating cycles at Vmax, charging of capacitor
NfSwitching cycles at Vmax, failure mode
P Power
P25 Maximum power at 25 °C
Pel Electrical power
Pdiss Dissipation power
RGGenerator internal resistance
Rmin Minimum resistance
RRRated resistance
∆RRTolerance of RR
RPParallel resistance
RPTC PTC resistance
Rref Reference resistance
RSSeries resistance
R25 Resistance at 25 °C
R25,match Resistance matching per reel/ packing unit at 25 °C
∆R25 Tolerance of R25
T Temperature
t Time
TAAmbient temperature
Heating elements
Metallized rectangular disks, 230 V R102
Page 7 of 9Please read Cautions and warnings and
Important notes at the end of this document.
taThermal threshold time
TCFerroelectric Curie temperature
tESettling time (for level sensors)
TRRated temperature
Tsense Sensing temperature
Top Operating temperature
TPTC PTC temperature
tRResponse time
Tref Reference temperature
TRmin Temperature at minimum resistance
tSSwitching time
Tsurf Surface temperature
UCT Upper category temperature
V or Vel Voltage (with subscript only for distinction from volume)
Vc(max) Maximum DC charge voltage of the surge generator
VF,max Maximum voltage applied at fault conditions in protection mode
VRMS Root-mean-square value of voltage
VBD Breakdown voltage
Vins Insulation test voltage
Vlink,max Maximum link voltage
Vmax Maximum operating voltage
Vmax,dyn Maximum dynamic (short-time) operating voltage
Vmeas Measuring voltage
Vmeas,max Maximum measuring voltage
VRRated voltage
VPTC Voltage drop across a PTC thermistor
αTemperature coefficient
∆Tolerance, change
δth Dissipation factor
τth Thermal cooling time constant
λFailure rate
Lead spacing (in mm)
Abbreviations / Notes
Surface-mount devices
* To be replaced by a number in ordering codes, type designations etc.
+ To be replaced by a letter
All dimensions are given in mm.
The commas used in numerical values denote decimal points.
Heating elements
Metallized rectangular disks, 230 V R102
Page 8 of 9Please 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, CeraLink, CeraPlas, CSMP, CSSP,
CTVS, DeltaCap, DigiSiMic, DSSP, FilterCap, FormFit, MiniBlue, MiniCell, MKD, MKK,
MLSC, MotorCap, PCC, PhaseCap, PhaseCube, PhaseMod, PhiCap, SIFERRIT, SIFI,
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ThermoFuse, WindCap are trademarks registered or pending in Europe and in other coun-
tries. Further information will be found on the Internet at www.epcos.com/trademarks.
Important notes
Page 9 of 9
