B59404J0170A062

## **PTC thermistors** 

## SMD inrush current limiter 

**Series/Type: J404 Ordering code: B59404J0170A062** Date: 2023-02-20 Version: 1 

 TDK Electronics AG 2023. Reproduction, publication and dissemination of this publication, enclosures hereto and the information contained therein without TDK Electronics' prior express consent is prohibited. 

**PTC thermistors** 

**B59404J0170A062 J404** 

**SMD inrush current limiter** 

## **Applications** 

- Inrush current limiter (charging, discharging resistor) for smoothing and DC link capacitors 

- To replace high-power fixed resistors for capacitor charging, discharging 

- Discharge resistor for DC link capacitors 

## **Features** 

- Self-protecting in case of malfunction of short-circuit relay or internal short circuit of capacitor 

- Encased PTC thermistor with clamp contacts for high reliability 

- For high pulse currents and a high number of operating cycles 

- Inrush current limiters are not damaged when directly connected to Vmax even without additional current limitation 

- Reflow solderable according to JEDEC J-STD-020D 

- Flame-retardant plastic case, case material UL-listed 

- Sn-plated lead-free solder pads 

- Manufacturer's logo, type designation and laser printed date code YYWW 

- RoHS-compatible 

## **Delivery mode** 

- Blister tape 380-mm reel with 24-mm tape, taping to IEC 60286-3 

- Packing unit: 300 pcs. per reel 

## **Ordering code** 

B59404J0170A062 

PPD PTC PD 

2023-02-20 

Please read _Cautions and warnings_ and _Important notes_ at the end of this document. 

Page 2 of 17 

**PTC thermistors** 

**B59404J0170A062 J404** 

## **SMD inrush current limiter** 

## **Dimensional drawings** 

## **Material** 

- 1 Base: High temperature resistant plastics 2 Cap: High temperature resistant plastics 3 Spring terminal: Stainless steel tinned 4 PTC thermistor: Bariumtitanate 

|**Symbol**|**Min.**|**Nom.**|**Max.**|**Unit**|
|---|---|---|---|---|
|**w**|||13.5|mm|
|**th**|||10.0|mm|
|**h**|||11.0|mm|
|**w1**|3.7|4.0|4.3|mm|
|**w2**|9.7|10.0|10.3|mm|
|**w3**|5.2|5.5|5.8|mm|



## **Circuit diagram** 

PPD PTC PD 

2023-02-20 

Please read _Cautions and warnings_ and _Important notes_ at the end of this document. 

Page 3 of 17 

## ~~OO~~ **PTC thermistors B59404J0170A062 SMD inrush current limiter J404** 

## **General technical data** 

|**General technical data**|||
|---|---|---|
|Operating cycles at Vlink, max(charging, discharging of capacitor)1)Nc<br>100 000<br>~~a~~||cycles|
|Switching cycles at Vmax(failure mode)1)<br>Nr<br>100<br>Operating temperature range (V = 0)<br>Top<br>-40 / +125<br>Operating temperature range (V = Vlink, max)<br>Top<br>-40 / +105<br>~~a~~<br>~~||~~<br>~~a~~||cycles<br>°C<br>°C|



## **Electrical specifications** 

|**Electrical specifications**||||
|---|---|---|---|
|Maximum DC link voltage2)|Vlink, max<br>~~a~~|500<br>~~a~~|VDC<br>~~a~~|
|Maximum operating voltage3)|Vmax<br>~~a~~|350<br>~~a~~|VAC<br>~~a~~|
|Rated resistance at 25 °C (Vmeas< 1 V)1)|R25<br>~~a~~|500<br>~~a~~|Ω<br>~~a~~|
|Resistance tolerance1)|ΔR25<br>~~a~~|±30<br>~~a~~|%<br>~~a~~|
|Minimum PTC resistance at Vlink, max(typical)|Rmin<br>~~a~~|150<br>~~a~~|Ω<br>~~a~~|
|Reference temperature (typical)|Tref<br>~~a~~|170<br>~~a~~|°C<br>~~a~~|
|Heat capacity (typical)1)|Cth<br>~~a~~|1<br>~~a~~|J/K<br>~~a~~|
|Thermal time constant (typical)1)|τth<br>~~a~~|100<br>~~a~~|s<br>~~a~~|



1) Specification for TA = 25 °C 

2) Vlink, max or Vmax can be applied directly to the PTC – no additional current limitation necessary. 

3) AC voltage source shall be a commercial voltage supply at f = 50/60 Hz. In case of high frequency PTC resistance and break down voltage are reduced. 

PPD PTC PD 

2023-02-20 

Please read _Cautions and warnings_ and _Important notes_ at the end of this document. 

Page 4 of 17 

**PTC thermistors B59404J0170A062 SMD inrush current limiter J404** 

## **Circuit diagrams** 

- 1) Three phases circuit 

- 2) Single phase circuit 

- 3) DC circuit                                                                4) Discharging circuit 

PPD PTC PD 

2023-02-20 

Please read _Cautions and warnings_ and _Important notes_ at the end of this document. 

Page 5 of 17 

**PTC thermistors B59404J0170A062 SMD inrush current limiter J404** 

## **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. 

K ∙C ∙V[2] 

|K|K factor<br>K = 1 for DC source<br>K = 0.96 for 3-phase bridge rectifier<br>K = 0.76 for single phase bridge rectifier|
|---|---|
|N|Number of required PTC thermistors connected in parallel|
|C|Capacitance of smoothing or DC link capacitor in F|
|V|Charging voltage of capacitor in V|
|Cth|Heat capacity in J/K|
|Tref|Reference temperature of PTC in °C|
|TA,max|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. 

In case of discharging application the below equation is to be applied. 

**==> picture [205 x 79] intentionally omitted <==**

## **Calculation of the number of applicable charging/ discharging cycles in short time** 

In case repeated charging/ discharging cycles are applied in short time, the number of cycles NC shall be limited to avoid unwanted tripping to high-resistance state. 

**==> picture [88 x 26] intentionally omitted <==**

where 

**==> picture [419 x 32] intentionally omitted <==**

PPD PTC PD 

2023-02-20 

Please read _Cautions and warnings_ and _Important notes_ at the end of this document. 

Page 6 of 17 

**PTC thermistors SMD inrush current limiter** 

**B59404J0170A062 J404** 

In case of time interval for cooling between cycles, there might be a possibility to reduce number of PTC elements N or increase number of applicable cycles Nc. PTC temperature at the beginning of charging / discharging cycle can be estimated using the below equation, which describes cooling behaviour of PTC elements over time. 

t TPTC = TA + (Ti −TA )007( ~~-—)~~ τth 

|TPTC|PTC temperature in °C|
|---|---|
|Ti|Initially elevated PTC temperature through charging /|
||discharging cycle in °C|
|t|Elapsed time in s|
|τth|Thermal time constant in s|



PPD PTC PD 

2023-02-20 

Please read _Cautions and warnings_ and _Important notes_ at the end of this document. 

Page 7 of 17 

**PTC thermistors** 

**B59404J0170A062 J404** 

**SMD inrush current limiter** 

## **Characteristics (typical)** 

PTC resistance RPTC versus PTC temperature TPTC 

## Vp: pulsed voltage 

Minimum resistance of PTC versus applied voltage (pulsed) 

PPD PTC PD 

2023-02-20 

Please read _Cautions and warnings_ and _Important notes_ at the end of this document. 

Page 8 of 17 

**PTC thermistors** 

**PTC thermistors B59404J0170A062 SMD inrush current limiter J404** 

Switching time ts versus switching current Is at 

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

PPD PTC PD 

2023-02-20 

Please read _Cautions and warnings_ and _Important notes_ at the end of this document. 

Page 9 of 17 

## ~~OO~~ **PTC thermistors B59404J0170A062 SMD inrush current limiter J404** 

## **Reliability data** 

|**Reliability data**||||
|---|---|---|---|
|**Test**|**Standard**<br>~~a~~|**Test conditions**<br>|**|ΔR25/R25| **|
|Electrical<br>endurance cycling|IEC 60738-1<br>~~aoo~~|Room temperature, V = Vlink, max,<br>applied energy < Cth·(Tref– TA)<br>Number of cycles: 100 000<br>~~oo~~|≤ 25%|
|Electrical<br>endurance cycling<br>(failure mode)|~~of~~|Room temperature, V = Vmax, RS= 0 Ω,<br>ton= 2 s, toff= 600 s<br>Number of cycles: 100<br>~~of~~|≤ 25%|
|Voltage impulse<br>cycling|~~of~~|Room temperature, V = 1000 Vpeak, trise=<br>10 µs, pulse width = 1000 µs, tinterval= 60 s,<br>number of cycles: 100<br>~~of~~|≤ 25%|
|High temperature<br>exposure|MIL-STD-202<br>Method 108<br>~~fT~~|1000 h at max. operating temperature<br>+125 °C (V = 0)<br>Measurement at 24 ± 2 h after test<br>~~fT~~|≤ 20%|
|Temperature<br>cycling|JESD22<br>Method JA-104<br>~~fT~~|1000 cycles, -55 °C to +125 °C, dwell time<br>= 15 min at each temperature extreme,<br>1 min. max. transition time<br>Measurement at 24 ± 2 h after test<br>~~fT~~|≤ 25%|
|Biased humidity|MIL-STD-202<br>Method 103<br>~~fT~~|1000 h, 85 °C/85% RH, V = 0.05 x Vmax<br>(10% rated power), measurement at 24 ±<br>2 h after test conclusion<br>~~fT~~|≤ 20%|
|Operational life|MIL-STD-202<br>Method 108<br>~~fT~~<br>~~fT~~|1000 h at max. operating temperature<br>+105 °C, V = Vlink, max, measurement at<br>24 ± 2 h after test conclusion<br>~~fT~~<br>~~fT~~|≤ 25%|
|Mechanical shock|MIL-STD-202 –<br>213 Condition F|a = 15000 m/s², d = 0.5 ms, 3 pulses per<br>axis (6 directions)|≤ 5%|
|Vibration|MIL-STD-202<br>Method 204<br>~~pf~~|f = 10 – 2000 – 10 Hz, h = 0.75 mm<br>respective a = 50 m/s² (peak value),<br>duration: 3 x 4 h (3 directions,<br>4 h/direction)<br>~~pf~~|≤ 5%|
|Resistance to<br>soldering heat|~~fT~~|Reflow soldering, T = 260 -0/+5 °C,<br>tpeak= 20 … 40 s, Pb-free EPC 260 N2,<br>soldering 3 times<br>~~fT~~|≤ 20%|
|ESD|AEC-Q200-002<br>ISO/DIS 10605<br>~~ee~~|150 pF / 300 Ω, 8 kV contact discharge,<br>polarity+/-, 10 pulses in each polarity<br>~~ee~~|≤ 5%|
|Solderability|IEC 60068-2-58<br>~~of~~|Reflow soldering, T = 235 -5/+0 °C,<br>tpeak= 30 … 40 s, Pb-free EPC 235 N2,<br>soldering 1 time<br>~~of~~|≤ 20%|
|Board flex|AEC-Q200-005|Parameters: d = 2 mm, t = 60 s<br>Remark: measuring of the R-value every<br>0.1 mm|≤ 5%<br>No<br>mechanical<br>damage|
|Terminal strength|AEC-Q200-006|F = 17.7 N, apply perpendicular to the<br>longitudinal axis of component,<br>t = 60 + 1 s|≤ 5%<br>No<br>mechanical<br>damage|



PPD PTC PD 

2023-02-20 

Please read _Cautions and warnings_ and _Important notes_ at the end of this document. 

Page 10 of 17 

**PTC thermistors SMD inrush current limiter** 

**B59404J0170A062 J404** 

## **Recommended soldering profile** 

Recommended temperature characteristic for reflow soldering following JEDEC J-STD-020D. 

|**Profile feature**||**Pb-free assembly**|
|---|---|---|
|Preheat and soak<br>- Temperature min<br>- Temperature max<br>- Time|Tsmin<br>Tsmax<br>Tsminto tsmax|+150°C<br>+200°C<br>60 ... 180 s|
|Average ramp-up rate|Tsmaxto Tp|3°C/ s max.|
|Liquidous temperature<br>Time at liquidous|TL<br>tL|+217°C<br>60 ... 150 s|
|Peak package body temperature|Tp1)|+245°C ... +260°C2)|
|Time (tp)3within 5°C of specified classification<br>temperature (Tc)|tp|30 s3)|
|Average ramp-down rate|Tpto Tsmax|6°C/ s max.|
|Time +25°C to peak temperature||max. 8 minutes|



1) Tolerance for peak profile temperature (TP) is defined as a supplier minimum and a user maximum. 

2) Depending on package thickness. For details please refer to JEDEC J-STD-020D. 

3) Tolerance for time at peak profile temperature (tP) is defined as a supplier minimum and a user maximum. Note: All temperatures refer to topside of the package, measured on the package body surface. 

PPD PTC PD 

2023-02-20 

Please read _Cautions and warnings_ and _Important notes_ at the end of this document. 

Page 11 of 17 

~~Lo~~ **PTC thermistors B59404J0170A062 SMD inrush current limiter J404** 

Number of reflow cycles: 3. soldering on PCB must be performed with lead free solder. Material with content of lead is not allowed to be used. 

**Packaging:** Blister tape, 380 mm reel, 24 mm tape, 300 pcs. per reel 

PPD PTC PD 

2023-02-20 

Please read _Cautions and warnings_ and _Important notes_ at the end of this document. 

Page 12 of 17 

**PTC thermistors SMD inrush current limiter** 

**B59404J0170A062 J404** 

## **Blister / Carrier** 

|**Description**|**Symbol**|**Measure**<br>**mm**|**Tolerance**<br>**mm**|
|---|---|---|---|
|Tape width|W|24.0|±0.3|
|Carrier tape thickness|T|0.5||
|Overall thickness|T2||max.|
|Pitch of the sprocket holes|P0*|4.0|±0.1|
|Pitch of component compartment|P1|20|±0.1|
|Dimension (centre to centre)|P2|2.0|±0.1|
|Diameter of sprocket holes|D0|1.5|+0.1|
|Distance upper edge of tape - centre sprocket hole E|Distance upper edge of tape - centre sprocket hole E|1.75|±0.1|
|Distance between centre of sprocket hole - centre<br>of cavity|F|11.5|±0.1|
|Distance cavity - end of tape|G|0.75|min.|
|Component compartment|A0|11.3|±0.2|
||B0|14.4|±0.2|
||K0|11.4|±0.2|



Material: Polystyrene, antistatic, black for blister tape Polystyrene for reel 

PPD PTC PD 

2023-02-20 

Please read _Cautions and warnings_ and _Important notes_ at the end of this document. 

Page 13 of 17 

|**PTC thermistors**|**B59404J0170A062**|
|---|---|
|**SMD inrush current limiter**|**J404**|



## **Cautions and warnings** 

## **General** 

- TDK Electronics 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 TDK Electronics 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 prior to processing. 

- Storage conditions in original packaging: storage temperature -25°C ... +45°C, relative humidity ≤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 operation (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 1210 and smaller: 12 months 

## **Handling** 

- PTCs must not be dropped. Chip-offs must not be caused during handling of PTCs. 

- The ceramic and metallization of the 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. 

PPD PTC PD 

2023-02-20 

Please read _Cautions and warnings_ and _Important notes_ at the end of this document. 

Page 14 of 17 

|**PTC thermistors**|**B59404J0170A062**|
|---|---|
|**SMD inrush current limiter**|**J404**|



## **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 and pressure of the clamping contacts pressing against the PTC must be 10 N and 50 kPa, respectively. In case the assembly is exposed to mechanical shock and/ or vibration this force should be higher in order to avoid movement of the PTC during operation. 

- 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 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). 

This listing does not claim to be complete, but merely reflects the experience of TDK Electronics AG. 

## **Display of ordering codes for TDK Electronics products** 

The ordering code for one and the same product can be represented differently in data sheets, data books, other publications, on the company website, or in order-related documents such as shipping notes, order confirmations and product labels. **The varying representations of the ordering codes are due to different processes employed and do not affect the specifications of the respective products** . Detailed information can be found on the Internet under www.tdk-electronics.tdk.com/orderingcodes. 

PPD PTC PD 

2023-02-20 

Please read _Cautions and warnings_ and _Important notes_ at the end of this document. 

Page 15 of 17 

## **Important notes** 

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 requirements 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 we are either unfamiliar with individual customer applications or less familiar with them than the customers themselves. For these reasons, it is always ultimately incumbent on the customer to check and decide whether a product with the properties described 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 Material Data Sheets on the Internet (www.tdk-electronics.tdk.com/material). Should you have any more detailed 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 foregoing for customer-specific products. 

6. Unless otherwise agreed in individual contracts, **all orders are subject to our General Terms and Conditions of Supply.** 

7. **Our manufacturing sites serving the automotive business apply the IATF 16949 standard.** The IATF certifications confirm our compliance with requirements regarding the quality management system in the automotive industry. Referring to customer requirements and customer specific requirements (“CSR”) TDK always has and will continue to have the policy of respecting individual agreements. Even if IATF 16949 may appear to support the acceptance of unilateral requirements, we hereby like to emphasize that **only requirements mutually agreed upon can and will be implemented in our Quality Management System.** For clarification purposes we like to point out that obligations from IATF 16949 shall only become legally binding if individually agreed upon. 

Page 16 of 17 

**Important notes** 

8. The trade names EPCOS, CarXield, CeraCharge, CeraDiode, CeraLink, CeraPad, CeraPlas, CSMP, CTVS, DeltaCap, DigiSiMic, ExoCore, FilterCap, FormFit, InsuGate, LeaXield, MiniBlue, MiniCell, MKD, MKK, ModCap, MotorCap, PCC, PhaseCap, PhaseCube, PhaseMod, PhiCap, PowerHap, PQSine, PQvar, SIFERRIT, SIFI, SIKOREL, SilverCap, SIMDAD, SiMic, SIMID, SineFormer, SIOV, ThermoFuse, WindCap, XieldCap are **trademarks registered or pending** in Europe and in other countries. Further information will be found on the Internet at www.tdk-electronics.tdk.com/trademarks. 

## Release 2022-07 

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