B57650H0824A001

## **NTC thermistors for temperature measurement** 

## High temperature glass-encapsulated NTC 

**Series/Type: H650/822k/A1 Ordering code: B57650H0824A001** Date: 2017-03-09 Version: 1 

 EPCOS AG 2017. 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. 

## ~~ee~~ **NTC thermistors for temperature measurement B57650H0824A001 High temperature glass-encapsulated NTC H650/822k/A1** 

## **Application** 

- Temperature measurement for high temperatures 

## **Features** 

- Glass-encapsulated, heat resistive and highly stable 

- For temperature measurement up to 650 °C 

- Short response time 

- High measurement accuracy 

**==> picture [30 x 7] intentionally omitted <==**

**----- Start of picture text -----**<br>
 ≤ 1.8<br>**----- End of picture text -----**<br>


**==> picture [127 x 154] intentionally omitted <==**

**----- Start of picture text -----**<br>
≥ 0.2<br>0.88 ±0.1  I 0.68 ±0.1<br>≤7<br>16 ±1<br>**----- End of picture text -----**<br>


Dimensions in mm 

1) Glass-encapsulation 2) Ag conductive path 3) Al2O3 rod 

## **Technical specification** 

|**Technical specification**||||
|---|---|---|---|
|Lower category temperature|~~ae~~|°C<br>~~ae~~|–40|
|Upper category temperature|~~ee~~|°C<br>~~ee~~|600|
|Mid-term temperature stability (1000 h)|~~ee~~|°C<br>~~ee~~|650|
|Rated resistance RN// Tolerance|RN<br>~~ee~~|// %<br>~~ee~~|5000 // ±2|
|Rated temperature|TN<br>~~ee~~|°C<br>~~ee~~|200|
|R/T curve no. // R25|~~ee~~|n //<br>~~ee~~|6001 // 821970|
|B-value: B(25/200)// Tolerance|BN<br>~~ee~~|K // %<br>~~ee~~|4113 // ±1|
|Dissipation factor (in air)|th<br>~~ee~~|mW/K<br>~~ee~~|approx. 1.5|
|Thermal cooling time constant (in air)|C<br>~~ee~~|s<br>~~ee~~|approx. 10|
|Heat capacity|Cth<br>~~a~~|mJ/K<br>~~a~~|approx. 15<br>~~a~~|



SEN NTC PD E 

2017-03-09 

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

Page 2 of 10 

~~eee~~ **NTC thermistors for temperature measurement B57650H0824A001 High temperature glass-encapsulated NTC H650/822k/A1** 

## **Remarks** 

The NTC sensor element is not specified for direct contact with aggressive media in any aggregate state (liquid, solid or gas) incl. water. 

Direct contact with aggressive media may lead to a defect and malfunction of the NTC sensor. Customers must take appropriate measures to avoid direct contact with aggressive media, e.g. covering or housing the NTC sensor. 

## **NTC resistance temperature curve** 

|T<br>°C|Rnom<br><br>~~a~~|Rmin<br><br>~~ee~~|Rmax<br><br>~~ee~~|R<br>±%<br>~~eee~~|T<br>±°C<br>~~eee~~|<br>%/K|
|---|---|---|---|---|---|---|
|–40|18 452 000<br>~~a~~<br>~~a~~<br>~~es~~|16 423 000<br>~~ee ~~|20 481 000<br> ~~ee ~~|11.0<br> ~~eee ~~|2.0<br> ~~eee~~|5.6|
|–35|14 011 000<br>~~es~~<br>~~Re~~|12 522 000|15 500 000|10.6|2.0|5.4|
|–30|10 709 000<br>~~es~~<br>~~Re~~<br>~~es~~|9 609 300|11 810 000|10.3|1.9|5.3|
|–25|8 239 000<br>~~Re~~<br>~~es~~|7 420 700|9 057 300|9.9|1.9|5.2|
|–20|6 378 400<br>~~es~~<br>~~es~~<br>~~es~~|5 765 800<br>~~es~~|6 991 100<br>~~es~~|9.6<br>~~es~~|1.9<br>~~es~~|5.1|
|–15|4 968 300<br>~~es~~|4 506 800|5 429 900|9.3|1.9|4.9|
|–10|3 893 000<br>~~es~~<br>~~a~~<br>~~es~~|3 543 100|4 242 900|9.0|1.9|4.8|
|–5|3 068 000<br>~~es~~|2 801 300|3 334 800|8.7|1.8|4.7|
|0|2 431 500<br>~~es~~<br>~~a~~|2 226 900|2 636 100|8.4|1.8|4.6|
|5|1 937 500<br>~~a~~|1 779 700|2 095 300|8.1|1.8|4.5|
|10|1 552 000<br>~~a~~|1 429 600|1 674 300|7.9|1.8|4.4|
|15|1 249 500<br>~~a~~<br>~~es~~|1 154 200|1 344 900|7.6|1.8|4.3|
|20|1 011 000<br>~~es~~<br>~~Re~~|936 330|1 085 700|7.4|1.8|4.2|
|25|821 970<br>~~es~~<br>~~Re~~<br>~~es~~|763 180|880 760|7.2|1.7|4.1|
|30|671 380<br>~~Re~~<br>~~es~~<br>~~Re~~|624 890|717 870|6.9|1.7|4.0|
|35|550 860<br>~~es~~<br>~~Re~~<br>~~es~~|513 930|587 790|6.7|1.7|3.9|
|40|453 950<br>~~Re~~<br>~~es~~<br>~~Re~~|424 480|483 420|6.5|1.7|3.8|
|45|375 680<br>~~es~~<br>~~Re~~<br>~~es~~|352 070|399 290|6.3|1.7|3.7|
|50|312 180<br>~~Re~~<br>~~es~~|293 190|331 180|6.1|1.7|3.7|
|55|260 450<br>~~es~~<br>~~a~~<br>~~es~~|245 110|275 800|5.9|1.6|3.6|
|60|218 140<br>~~es~~|205 700|230 580|5.7|1.6|3.5|
|65|183 380<br>~~es~~<br>~~a~~|173 260|193 500|5.5|1.6|3.4|
|70|154 720<br>~~a~~|146 460|162 990|5.3|1.6|3.4|
|75|131 010<br>~~a~~|124 230|137 780|5.2|1.6|3.3|
|80|111 310<br>~~a~~<br>~~es~~|105 740|116 880|5.0|1.6|3.2|
|85|94 883<br>~~es~~<br>~~Re~~|90 289|99 476|4.8|1.5|3.2|
|90|81 144<br>~~es~~<br>~~Re~~<br>~~es~~|77 344|84 944|4.7|1.5|3.1|
|95|69 613<br>~~Re~~<br>~~es~~|66 460|72 766|4.5|1.5|3.0|



SEN NTC PD E 

2017-03-09 

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

Page 3 of 10 

## ~~eee~~ **NTC thermistors for temperature measurement B57650H0824A001 High temperature glass-encapsulated NTC H650/822k/A1** 

|T<br>°C|Rnom<br><br>~~ee~~|Rmin<br><br>~~ee~~|Rmax<br><br>~~eee~~|R<br>±%<br>~~eee~~|T<br>±°C<br>~~eee~~|<br>%/K|
|---|---|---|---|---|---|---|
|100|59 902<br>~~ee~~<br>~~a~~<br>~~es~~|57 279<br>~~ee ~~|62 526<br> ~~eee~~|4.4<br>~~eee ~~|1.5<br> ~~eee~~|3.0|
|105|51 699<br>~~es~~<br>~~Re~~|49 510|53 888|4.2|1.5|2.9|
|110|44 747<br>~~es~~<br>~~Re~~<br>~~es~~|42 916|46 578|4.1|1.4|2.9|
|115|38 839<br>~~Re~~<br>~~es~~|37 303|40 374|4.0|1.4|2.8|
|120|33 802<br>~~es~~<br>~~a~~|32 511|35 093|3.8|1.4|2.8|
|125|29 497<br>~~a~~|28 409|30 584|3.7|1.4|2.7|
|130|25 806<br>~~a~~<br>~~es~~|24 887|26 724|3.6|1.3|2.6|
|135|22 633<br>~~es~~|21 856|23 410|3.4|1.3|2.6|
|140|19 899<br>~~es~~<br>~~a~~|19 240|20 558|3.3|1.3|2.6|
|145|17 536<br>~~a~~<br>~~es~~|16 976|18 096|3.2|1.3|2.5|
|150|15 490<br>~~es~~<br>~~Re~~|15 013|15 966|3.1|1.2|2.5|
|155|13 713<br>~~es~~<br>~~Re~~<br>~~es~~|13 306|14 119|3.0|1.2|2.4|
|160|12 167<br>~~Re~~<br>~~es~~|11 820|12 514|2.9|1.2|2.4|
|165|10 815<br>~~es~~<br>~~a~~<br>~~es~~|10 518|11 112|2.7|1.2|2.3|
|170|9632.2<br>~~es~~<br>~~Re~~|9378.0|9886.3|2.6|1.1|2.3|
|175|8595.6<br>~~es~~<br>~~Re~~<br>~~es~~|8377.7|8813.5|2.5|1.1|2.3|
|180|7685.2<br>~~Re~~<br>~~es~~|7498.2|7872.2|2.4|1.1|2.2|
|185|6883.9<br>~~es~~<br>~~a~~<br>~~es~~|6723.2|7044.6|2.3|1.1|2.2|
|190|6177.2<br>~~es~~|6039.0|6315.5|2.2|1.0|2.1|
|195|5552.8<br>~~es~~<br>~~a~~|5433.8|5671.8|2.1|1.0|2.1|
|200|5000.0<br>~~a~~|4900.0|5100.0|2.0|1.0|2.1|
|205|4509.7<br>~~a~~|4413.1|4606.2|2.1|1.0|2.0|
|210|4074.0<br>~~a~~|3983.2|4164.9|2.2|1.1|2.0|
|215|3686.2<br>~~a~~<br>~~Re~~|3600.8|3771.6|2.3|1.2|2.0|
|220|3340.5<br>~~Re~~<br>~~es~~|3260.2|3420.7|2.4|1.2|2.0|
|225|3031.7<br>~~Re~~<br>~~es~~<br>~~Re~~|2956.3|3107.0|2.5|1.3|1.9|
|230|2755.4<br>~~es~~<br>~~Re~~<br>~~es~~|2684.6|2826.2|2.6|1.4|1.9|
|235|2507.9<br>~~Re~~<br>~~es~~<br>~~Re~~|2441.4|2574.3|2.6|1.4|1.9|
|240|2285.7<br>~~es~~<br>~~Re~~<br>~~es~~|2223.4|2348.1|2.7|1.5|1.8|
|245|2086.1<br>~~Re~~<br>~~es~~|2027.6|2144.6|2.8|1.5|1.8|
|250|1906.4<br>~~es~~<br>~~a~~|1851.5|1961.3|2.9|1.6|1.8|
|255|1744.4<br>~~a~~|1692.9|1796.0|3.0|1.7|1.8|
|260|1598.2<br>~~a~~<br>~~es~~|1549.8|1646.6|3.0|1.7|1.7|
|265|1466.1<br>~~es~~|1420.6|1511.5|3.1|1.8|1.7|
|270|1346.5<br>~~es~~<br>~~a~~|1303.8|1389.2|3.2|1.9|1.7|
|275|1238.1<br>~~a~~|1198.0|1278.2|3.2|1.9|1.7|
|280|1139.7<br>~~a~~<br>~~Re~~|1102.0|1177.4|3.3|2.0|1.6|
|285|1050.3<br>~~Re~~<br>~~es~~|1014.9|1085.8|3.4|2.1|1.6|
|290|969.04<br>~~Re~~<br>~~es~~|935.71|1002.4|3.4|2.1|1.6|



SEN NTC PD E 

2017-03-09 

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

Page 4 of 10 

## ~~eee~~ **NTC thermistors for temperature measurement B57650H0824A001 High temperature glass-encapsulated NTC H650/822k/A1** 

|T<br>°C|Rnom<br><br>~~ee~~|Rmin<br><br>~~ee~~|Rmax<br><br>~~eee~~|R<br>±%<br>~~eee~~|T<br>±°C<br>~~eee~~|<br>%/K|
|---|---|---|---|---|---|---|
|295|894.99<br>~~ee~~<br>~~a~~<br>~~es~~|863.63<br>~~ee ~~|926.34<br> ~~eee~~|3.5<br>~~eee ~~|2.2<br> ~~eee~~|1.6|
|300|826.76<br>~~es~~<br>~~Re~~|797.27|856.24|3.6|2.3|1.6|
|305|764.39<br>~~es~~<br>~~Re~~<br>~~es~~|736.65|792.13|3.6|2.4|1.5|
|310|707.62<br>~~Re~~<br>~~es~~|681.51|733.72|3.7|2.4|1.5|
|315|655.83<br>~~es~~<br>~~a~~|631.24|680.42|3.7|2.5|1.5|
|320|608.52<br>~~a~~|585.35|631.70|3.8|2.6|1.5|
|325|565.23<br>~~a~~<br>~~es~~|543.37|587.08|3.9|2.6|1.5|
|330|525.55<br>~~es~~|504.93|546.18|3.9|2.7|1.4|
|335|489.14<br>~~es~~<br>~~a~~|469.68|508.61|4.0|2.8|1.4|
|340|455.68<br>~~a~~<br>~~es~~|437.29|474.07|4.0|2.9|1.4|
|345|424.89<br>~~es~~<br>~~Re~~|407.52|442.27|4.1|2.9|1.4|
|350|396.53<br>~~es~~<br>~~Re~~<br>~~es~~|380.10|412.95|4.1|3.0|1.4|
|355|370.37<br>~~Re~~<br>~~es~~|354.83|385.91|4.2|3.1|1.4|
|360|346.22<br>~~es~~<br>~~a~~<br>~~es~~|331.51|360.92|4.2|3.2|1.3|
|365|323.90<br>~~es~~<br>~~Re~~|309.98|337.81|4.3|3.2|1.3|
|370|303.25<br>~~es~~<br>~~Re~~<br>~~es~~|290.06|316.43|4.3|3.3|1.3|
|375|284.12<br>~~Re~~<br>~~es~~|271.63|296.62|4.4|3.4|1.3|
|380|266.40<br>~~es~~<br>~~a~~<br>~~es~~|254.56|278.25|4.4|3.5|1.3|
|385|249.97<br>~~es~~|238.73|261.20|4.5|3.5|1.3|
|390|234.71<br>~~es~~<br>~~a~~|224.05|245.36|4.5|3.6|1.3|
|395|220.53<br>~~a~~|210.41|230.64|4.6|3.7|1.2|
|400|207.35<br>~~a~~|197.74|216.95|4.6|3.8|1.2|
|405|195.08<br>~~a~~|185.95|204.20|4.7|3.9|1.2|
|410|183.66<br>~~a~~<br>~~Re~~|174.98|192.33|4.7|3.9|1.2|
|415|173.01<br>~~Re~~<br>~~es~~|164.77|181.26|4.8|4.0|1.2|
|420|163.09<br>~~Re~~<br>~~es~~<br>~~Re~~|155.25|170.93|4.8|4.1|1.2|
|425|153.83<br>~~es~~<br>~~Re~~<br>~~es~~|146.37|161.29|4.9|4.2|1.2|
|430|145.18<br>~~Re~~<br>~~es~~<br>~~Re~~|138.08|152.29|4.9|4.3|1.2|
|435|137.11<br>~~es~~<br>~~Re~~<br>~~es~~|130.34|143.87|4.9|4.3|1.1|
|440|129.56<br>~~Re~~<br>~~es~~|123.11|136.00|5.0|4.4|1.1|
|445|122.49<br>~~es~~<br>~~a~~|116.35|128.64|5.0|4.5|1.1|
|450|115.88<br>~~a~~|110.02|121.74|5.1|4.6|1.1|
|455|109.69<br>~~a~~<br>~~es~~|104.10|115.28|5.1|4.7|1.1|
|460|103.89<br>~~es~~|98.559|109.22|5.1|4.7|1.1|
|465|98.453<br>~~es~~<br>~~a~~|93.362|103.54|5.2|4.8|1.1|
|470|93.351<br>~~a~~|88.489|98.213|5.2|4.9|1.1|
|475|88.563<br>~~a~~<br>~~Re~~|83.918|93.208|5.2|5.0|1.0|
|480|84.066<br>~~Re~~<br>~~es~~|79.626|88.507|5.3|5.1|1.0|
|485|79.842<br>~~Re~~<br>~~es~~|75.596|84.087|5.3|5.2|1.0|



SEN NTC PD E 

2017-03-09 

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

Page 5 of 10 

## ~~eee~~ **NTC thermistors for temperature measurement B57650H0824A001 High temperature glass-encapsulated NTC H650/822k/A1** 

|T<br>°C|Rnom<br><br>~~ee~~|Rmin<br><br>~~ee~~|Rmax<br><br>~~eee~~|R<br>±%<br>~~eee~~|T<br>±°C<br>~~eee~~|<br>%/K|
|---|---|---|---|---|---|---|
|490|75.870<br>~~ee~~<br>~~a~~<br>~~es~~|71.808<br>~~ee ~~|79.931<br> ~~eee~~|5.4<br>~~eee ~~|5.3<br> ~~eee~~|1.0|
|495|72.134<br>~~es~~<br>~~Re~~|68.247|76.021|5.4|5.4|1.0|
|500|68.619<br>~~es~~<br>~~Re~~<br>~~es~~|64.898|72.340|5.4|5.5|1.0|
|505|65.309<br>~~Re~~<br>~~es~~|61.745|68.873|5.5|5.5|1.0|
|510|62.191<br>~~es~~<br>~~a~~|58.777|65.606|5.5|5.6|1.0|
|515|59.253<br>~~a~~|55.980|62.526|5.5|5.7|1.0|
|520|56.483<br>~~a~~<br>~~es~~|53.344|59.621|5.6|5.8|1.0|
|525|53.869<br>~~es~~|50.858|56.880|5.6|5.9|0.9|
|530|51.402<br>~~es~~<br>~~a~~|48.512|54.292|5.6|6.0|0.9|
|535|49.073<br>~~a~~<br>~~es~~|46.299|51.847|5.7|6.1|0.9|
|540|46.872<br>~~es~~<br>~~Re~~|44.208|49.537|5.7|6.2|0.9|
|545|44.792<br>~~es~~<br>~~Re~~<br>~~es~~|42.232|47.353|5.7|6.3|0.9|
|550|42.826<br>~~Re~~<br>~~es~~|40.365|45.286|5.7|6.4|0.9|
|555|40.965<br>~~es~~<br>~~a~~<br>~~es~~|38.599|43.331|5.8|6.5|0.9|
|560|39.204<br>~~es~~<br>~~Re~~|36.928|41.480|5.8|6.6|0.9|
|565|37.537<br>~~es~~<br>~~Re~~<br>~~es~~|35.346|39.727|5.8|6.8|0.9|
|570|35.957<br>~~Re~~<br>~~es~~|33.848|38.066|5.9|6.9|0.9|
|575|34.460<br>~~es~~<br>~~a~~<br>~~es~~|32.429|36.491|5.9|7.0|0.8|
|580|33.041<br>~~es~~|31.084|34.997|5.9|7.1|0.8|
|585|31.694<br>~~es~~<br>~~a~~|29.808|33.580|5.9|7.2|0.8|
|590|30.417<br>~~a~~|28.598|32.235|6.0|7.3|0.8|
|595|29.203<br>~~a~~|27.450|30.957|6.0|7.4|0.8|
|600|28.051<br>~~a~~|26.359|29.744|6.0|7.5|0.8|
|605|26.957<br>~~a~~<br>~~Re~~|25.323|28.590|6.1|7.7|0.8|
|610|25.916<br>~~Re~~<br>~~es~~|24.339|27.493|6.1|7.8|0.8|
|615|24.926<br>~~Re~~<br>~~es~~<br>~~Re~~|23.403|26.450|6.1|7.9|0.8|
|620|23.985<br>~~es~~<br>~~Re~~<br>~~es~~|22.513|25.457|6.1|8.0|0.8|
|625|23.089<br>~~Re~~<br>~~es~~<br>~~Re~~|21.666|24.512|6.2|8.1|0.8|
|630|22.236<br>~~es~~<br>~~Re~~<br>~~es~~|20.860|23.612|6.2|8.3|0.7|
|635|21.423<br>~~Re~~<br>~~es~~|20.092|22.754|6.2|8.4|0.7|
|640|20.649<br>~~es~~<br>~~a~~|19.361|21.937|6.2|8.5|0.7|
|645|19.911<br>~~a~~|18.664|21.158|6.3|8.7|0.7|
|650|19.207<br>~~a~~|17.999|20.414|6.3|8.8|0.7|



SEN NTC PD E 

2017-03-09 

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

Page 6 of 10 

~~LT~~ **NTC thermistors for temperature measurement B57650H0824A001 High temperature glass-encapsulated NTC H650/822k/A1** 

## **Reliability data** 

|Test|Standard|Test conditions|∆R100/R100<br>(typical)|Remarks|
|---|---|---|---|---|
|High temperature<br>exposure (storage)|~~ee~~|Temperature of air: 650 °C<br>Duration: 1000 h<br>~~ee~~|< 2%<br>~~ee~~|No visible<br>damage|
|Temperature<br>exposure (storage)|~~one~~|Temperature of air: 300 °C<br>Duration: 5000 h<br>~~one~~|< 1%<br>~~one~~|No visible<br>damage|
|Biased humidity|MIL-STD-202,<br>method 103<br>~~one~~|Temperature of air: 85 °C<br>Relative humidity of air: 85%<br>Sensor voltage: 0.3 V<br>Duration: 1000 h<br>~~one~~|< 2%<br>~~one~~|No visible<br>damage|
|Operational life|MIL-STD-202,<br>method 108<br>~~one~~|Temperature of air: 150 °C<br>Test voltage: 0.2 V<br>Duration: 1000 h<br>~~one~~|< 2%<br>~~one~~|No visible<br>damage|
|Rapid temperature<br>cycling|JESD22,<br>method JA-104|Lower test temperature: –40 °C<br>Upper test temperature: 200 °C<br>Dwell time at each temperature: 15 min<br>Maximum transition time: 1 min<br>Number of cycles: 1000|< 2%|No visible<br>damage|
|Rapid temperature<br>cycling||Lower test temperature: 105 °C<br>Upper test temperature: 500 °C<br>Dwell time at each temperature: 5 min<br>Maximum transition time: 1 min<br>Number of cycles: 1000|< 2%|No visible<br>damage|
|Mechanical shock|MIL-STD-202,<br>method 213,<br>condition C|Acceleration: 40_g_<br>Pulse duration: 6 ms<br>Number of bumps in each direction: 3|< 1%|No visible<br>damage|
|Vibration|MIL-STD-202,<br>method 204|Acceleration: 5_g_<br>Duration: 20 min<br>Number of cycles in each<br>of 3 orientations: 12<br>Frequency range: 10 … 2000 Hz|< 1%|No visible<br>damage|



SEN NTC PD E 

2017-03-09 

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

Page 7 of 10 

~~LT~~ **NTC thermistors for temperature measurement B57650H0824A001 High temperature glass-encapsulated NTC H650/822k/A1** 

## **Cautions and warnings** 

## Storage 

- Store thermistors only in original packaging. Do not open the package prior to storage. 

- Storage conditions in original packaging: storage temperature  −25 °C to 45 °C, relative humidity ≤75% annual mean, <95% maximum 30 days per annum, dew precipitation is inadmissible. 

- Do not store thermistors where they are exposed to heat or direct sunlight. Otherwise, the packing material may be deformed or components may stick together, causing problems during mounting. 

- Avoid contamination of thermistor surface during storage, handling and processing. 

- Avoid storage of thermistors in harmful environments like corrosive gases (SOx, Cl etc). 

- Use the components as soon as possible after opening the factory seals, i.e. the polyvinyl-sealed packages. 

- Solder thermistors within the time specified after shipment from EPCOS. 

- For leadless components with Ag metallization this is 12 months. 

## Handling 

- NTC thermistors must not be dropped. Chip-offs or any other damage must not be caused during handling. 

- Do not touch components with bare hands. Gloves are recommended. 

- Avoid contamination of thermistor surface during handling. 

- Washing processes may damage the product due to the possible static or cyclic mechanical loads (e.g. ultrasonic cleaning). They may cause cracks to develop on the product and its parts, which might lead to reduced reliability or lifetime. 

## Bending/ twisting leads 

- A lead (wire) may be bent at a minimum distance of twice the wire’s diameter plus 4 mm from the component head or housing. When bending ensure the wire is mechanically relieved at the component head or housing. The bending radius should be at least 0.75 mm. 

## Soldering 

- Use resin-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. 

SEN NTC PD E 

2017-03-09 

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

Page 8 of 10 

~~LT~~ **NTC thermistors for temperature measurement B57650H0824A001 High temperature glass-encapsulated NTC H650/822k/A1** 

## Mounting 

- Ensure that no thermo-mechanical stress occurs due to production processes (curing or overmolding processes) when thermistors are sealed, potted or overmolded or during their subsequent operation. The maximum temperature of the thermistor must not be exceeded. Ensure that the materials used (sealing/potting compound and plastic material) are chemically neutral. 

- Electrodes/contacts must not be scratched or damaged before/during/after the mounting process. 

- Contacts and housing used for assembly with the thermistor must be clean before mounting. 

- Ensure that adjacent materials are designed for operation at temperatures comparable to the surface temperature of the thermistor. Be sure that surrounding parts and materials can withstand the temperature. 

- Avoid contamination of the thermistor surface during processing. 

- The connections of sensors (e.g. cable end, wire end, plug terminal) may only be exposed to an environment with normal atmospheric conditions. 

- Tensile forces on cables or leads must be avoided during mounting and operation. 

- Bending or twisting of cables or leads directly on the thermistor body is not permissible. 

- Avoid using chemical substances as mounting aids. It must be ensured that no water or other liquids enter the NTC thermistors (e.g. through plug terminals). In particular, water based substances (e.g. soap suds) must not be used as mounting aids for sensors. 

## Operation 

- Use thermistors only within the specified operating temperature range. 

- Use thermistors only within the specified power range. 

- Environmental conditions must not harm the thermistors. Only use the thermistors under normal atmospheric conditions or within the specified conditions. 

- Contact of NTC thermistors with any liquids and solvents shall be prevented. It must be ensured that no water enters the NTC thermistors (e.g. through plug terminals). For measurement purposes (checking the specified resistance vs. temperature), the component must not be immersed in water but in suitable liquids (e.g. Galden). 

- Avoid dewing and condensation unless thermistor is specified for these conditions. 

- Bending or twisting of cables and/or wires is not permissible during operation of the sensor in the application. 

- Be sure to provide an appropriate fail-safe function to prevent secondary product damage caused by malfunction. 

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

## **Display of ordering codes for EPCOS products** 

The ordering code for one and the same EPCOS product can be represented differently in data sheets, data books, other publications, on the EPCOS 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.epcos.com/orderingcodes 

SEN NTC PD E 

2017-03-09 

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

Page 9 of 10 

~~Lo~~ **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, EPCOS is 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 an EPCOS 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 life-saving 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.epcos.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 the current version of the “General Terms of Delivery for Products and Services in the Electrical Industry” published by the German Electrical and Electronics Industry Association (ZVEI)** . 

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

Page 10 of 10