B59204J0130B010

B59204J0130B010 Datasheet


B5920* June 2008

Part Datasheet
B59204J0130B010 B59204J0130B010 B59204J0130B010 (pdf)
Related Parts Information
B59202J0135B010 B59202J0135B010 B59202J0135B010
B59201J0140B010 B59201J0140B010 B59201J0140B010
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Self-protecting power resistors

PTC thermistors in plastic case

Series/Type Date:

B5920* June 2008

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

Self-protecting power resistors PTC thermistors in plastic case

J201, J202, J204

Applications Inrush current limiter charging resistor for smoothing and DC link capacitors To replace high-power fixed resistors for capacitor charging

Dimensional drawing

Features Self-protecting in case of malfunction of short-circuit relay or internal short-circuit of capacitor Encased thermistor disk with clamp contacts For high pulse currents and a high number of operating cycles Flame-retardant plastic case material UL-listed Sn-plated lead-free solder pins Manufacturer's logo and type designation stamped on in white RoHS-compatible

Dimensions in mm Wiring diagram

Delivery mode Packed in carton box

General technical data

Operating cycles at Vmax
charging of capacitor Nc

Switching cycles at Vmax
failure mode

Thermal cooling time constant typical

Heat capacity
typical

Operating temperature range

Operating temperature range

V = Vmax
> > 10 150 0/+85
cycles s J/K °C °C
Electrical specifications and ordering codes

Vmax1

Tref

Ipulse,max
Ordering code
> 700

B59201J0140B010
> 700

B59202J0135B010
> 900

B59204J0130B010
1 Vmax Maximum permissible DC voltage directly applied to the PTC thermistor.

Please read Cautions and warnings and Important notes at the end of this document.

Page 2 of 7

Self-protecting power resistors PTC thermistors in plastic case

Characteristics Minimum resistance of PTC thermistors versus applied voltage

J201, J202, J204

PTC resistance RPTC versus PTC temperature TPTC measured at low signal voltage

Switching time tS versus switching current IS measured at 25 °C in still air

Residual current in high ohmic state Ires as function of applied voltage VPTC measured at 25 °C in still air

Please read Cautions and warnings and Important notes at the end of this document.

Page 3 of 7

Self-protecting power resistors PTC thermistors in plastic case

J201, J202, J204

Calculation of the number of required PTC elements

Number of required PTC elements connected in parallel as function of capacitance and charging voltage of smoothing or DC link capacitor:

N C V Cth Tref TA,max

Number of required PTC thermistors connected in parallel Capacitance of smoothing or DC link capacitor in F Charging voltage of capacitor in V Heat capacity in J/K Reference temperature of PTC in °C Expected maximum ambient temperature in °C

In case of large N values the resulting resistance of the parallel PTC network might be too low for effective limitation of the charging current. In this case a combination of series and parallel connected PTC thermistors can be used.

Please read Cautions and warnings and Important notes at the end of this document.

Page 4 of 7

Self-protecting power resistors PTC thermistors in plastic case

J201, J202, J204

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 thermistors 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 °C +45 °C, relative humidity 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 operation examples given under operation precautions . Use thermistor within 6 months after delivery.

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.

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. Especially 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.

Please read Cautions and warnings and Important notes at the end of this document.

Page 5 of 7

Self-protecting power resistors PTC thermistors in plastic case

J201, J202, J204

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 atmospheric conditions. Avoid use in deoxidizing gases chlorine gas, hydrogen sulfide gas, ammonia 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 .

Please read Cautions and warnings and Important notes at the end of this document.
More datasheets: MW4024-760F-NC-WH | MW4018-760F-NC-BK | MW4012-760F-NC-WH | MW4009-760F-NC-BK | MW4015-760F-NC-WH | FMS6246MTC20 | FMS6246MTC20X | 16284300932502 | 500-526 | B59202J0135B010


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Datasheet ID: B59204J0130B010 511533