Datasheet

ManualsBrandsRND Components ManualsThermistorsSMD Thermistor NTC 330kOhm 3987K

RND is a trademark of Distrelec

Type

Delimeter

334

Nominal Resistance

Tolerance

3950

B Constant

RND 155QN0402: 0402

RND 155QN0603: 0603

RND 155QN0805: 0805

222 = 2.2 kΩ

333 = 33 kΩ

334 = 330 kΩ

F = ± 1%

3600 = 3600 K

3950 = 3950 K

4050 = 4050 K

4500 = 4500 K

Tolerance of B Constant

Chip NTC Thermistor

RND 155QN0805

G = ± 2%

H = ± 3%

J = ±5 %

F = ± 1%

H = ± 3%

B Constant Calculation Method

A = 25℃ & 85 ℃

B = 25℃ & 50 ℃

Electrical Characteristics

Type Resistance

@ 25 °C

B Constant

@ 25 / 50 °C

B Constant

@ 25 / 85 °C

Permissible

Operating Current

@ 25 °C

Dissipation

Factor

Thermal

Time

Constant

Rated Electric

Power @ 25 °C

Operating

Ambient

Temperature

RND 155QN0805X334F3950FB

330 kΩ ±1%

3987 K

3950 K±1%

0.07 mA

2 mW / °C

<5 s

100 mW

40 ... 125 °C

Shape and Dimensions

Recommended PCB pattern for reflow soldering

Dimensions

Type L

0402

0603

0805

1 mm

1.6 mm

2 mm

0.5 mm

0.8 mm

1.25 mm

0.5 mm

0.8 mm

0.85 mm

0.25 mm

0.3 mm

0.5 mm

0.45 ... 0.55 mm

0.6 ... 0.8 mm

1 ... 1.1 mm

0.4 ... 0.5 mm

0.6 ... 0.7 mm



ϬϰϱϬϱϱŵŵ

ϬϲϬϴŵŵ

ϭ ... ϭϮ mm

PART NUMBER

Example: RND 155QN0805X334F3950FB

Features

• ,ŝŐŚƚĞƐƚŝŶŐƉƌĞĐŝƐŝŽŶ

• ^ƚĞĂĚǇŽƉĞƌĂƚŝŶŐĨŽƌůŽŶŐƚŝŵĞ

• ZĞĨůŽǁƐŽůĚĞƌŝŶŐƉŽƐƐŝďůĞ

• ^ŚŽƌƚƌĞƐƉŽŶƐĞƚŝŵĞ

Applications

• dĞŵƉĞƌĂƚƵƌĞŵĞĂƐƵƌĞŵĞŶƚ

• ĂƚƚĞƌǇĐŚĂƌŐĞƌƐ

• dĞŵƉĞƌĂƚƵƌĞƐĞŶƐŝŶŐƉƌŽƚĞĐƚŝŽŶĂŶĚĐŽŵƉĞŶƐĂƚŝŽŶŝŶŝŶĚƵƐƚƌŝĂůƚĞůĞĐŽŵĂŶĚĐŽŶƐƵŵĞƌĂƉƉůŝĐĂƚŝŽŶƐ

• /ŶƌƵƐŚĐƵƌƌĞŶƚůŝŵŝƚŝŶŐĞŐŝŶƐǁŝƚĐŚͲŵŽĚĞƉŽǁĞƌƐƵƉƉůŝĞƐƐŽĨƚͲƐƚĂƌƚŵŽƚŽƌƐ



Summary of content (9 pages)

PAGE 1
Chip NTC Thermistor Features • ,ŝŐŚ ƚĞƐƚŝŶŐ ƉƌĞĐŝƐŝŽŶ • ^ƚĞĂĚǇ ŽƉĞƌĂƚŝŶŐ ĨŽƌ ůŽŶŐ ƚŝŵĞ • ZĞĨůŽǁ ƐŽůĚĞƌŝŶŐ ƉŽƐƐŝďůĞ • ^ŚŽƌƚ ƌĞƐƉŽŶƐĞ ƚŝŵĞ Applications • dĞŵƉĞƌĂƚƵƌĞ ŵĞĂƐƵƌĞŵĞŶƚ • ĂƚƚĞƌǇ ĐŚĂƌŐĞƌƐ • dĞŵƉĞƌĂƚƵƌĞ ƐĞŶƐŝŶŐ͕ ƉƌŽƚĞĐƚŝŽŶ ĂŶĚ ĐŽŵƉĞŶƐĂƚŝŽŶ ŝŶ ŝŶĚƵƐƚƌŝĂů͕ ƚĞůĞĐŽŵ ĂŶĚ ĐŽŶƐƵŵĞƌ ĂƉƉůŝĐĂƚŝŽŶƐ • /ŶƌƵƐŚ ĐƵƌƌĞŶƚ ůŝŵŝƚŝŶŐ͕ Ğ͘Ő͘ ŝŶ ƐǁŝƚĐŚͲŵŽĚĞ ƉŽǁĞƌ ƐƵƉƉůŝĞƐ͕ ƐŽĨƚͲƐƚĂƌƚ ŵŽƚŽƌƐ PART NUMBER Example: RND 155QN0805X334F3950FB RND 155QN0805 Type X 334 F 3950 F Delimeter Nominal Resistance Tolerance B Co
PAGE 2
Chip NTC Thermistor Test and Measurement Procedures Unless otherwise specified, the standard atmospheric conditions for measurement/test as • Ambient Temperature: 20±15℃ • Relative Humidity: 65±20% • Air Pressure: 86 kPa to 106 kPa If any doubt on the results, measurements/tests should be made within the following limits • Ambient Temperature: 20±2℃ • Relative Humidity: 65±5% • Air Pressure: 86 kPa to 106 kPa Inspection Equipment • Visual Examination: 20x magnifier • Resistance value test: Thermistor resist
PAGE 3
Chip NTC Thermistor Reliability Test Item Terminal Strength Standard IEC 60068-2-21 Solder the chip to the testing jig (glass epoxy board shown in the right) using eutectic solder. Then apply a force in the direction of the arrow. Size F Duration 0402, 0603 5N 10N 10 ± 1 s 0805 Resistance to Flexure IEC 60068-2-21 Requirements Test Methods and Remarks Solder the chip to the test jig (glass epoxy board shown in the right) using a eutectic solder.
PAGE 4
Chip NTC Thermistor Item Standard Solderability IEC 60068-2-58 Resistance to Soldering Heat Temperature Cycling IEC 60068-2-58 IEC 60068-2-14 Test Methods and Remarks • Solder temperature: 245 ± 5℃ • Duration: 10 ± 1s • Solder: Sn/3.0Ag/0.5Cu • Flux: 25% resin and 75% ethanol in weight 1. No visible damage • Solder temperature: 245 ± 5℃ • Duration: 10±1s • Solder: Sn/3.0Ag/0.
PAGE 5
Chip NTC Thermistor Notes & Warnings The RND 155QN series thermistors shall not be operated and stored under the following environmental conditions: • Corrosive or deoxidized atmospheres (such as chlorine, sulfurated hydrogen, ammonia, sulfuric acid, nitric oxide and so on) • Volatile or inflammable atmospheres • Dusty condition • Excessively high or low pressure condition • Humid site • Places with brine, oil, chemical liquid or organic solvent • Intense vibration • Places with analogously deleterious cond
PAGE 6
Chip NTC Thermistor R-T Table Temp. (℃) R_Min (Kohm) R_Cent (Kohm) R_Max (Kohm) Res TOL. Temp. TOL.(℃) -40 10,887.606 11,394.069 11,922.899 4.64% 0.67 -39 10,185.472 10,652.099 11,138.989 4.57% 0.66 -38 9,533.422 9,963.516 10,411.972 4.50% 0.66 -37 8,927.555 9,324.129 9,737.346 4.43% 0.65 -36 8,364.300 8,730.105 9,110.997 4.36% 0.65 -35 7,840.386 8,177.933 8,529.159 4.29% 0.64 -34 7,352.806 7,664.390 7,988.377 4.23% 0.64 -33 6,898.813 7,186.530 7,485.
PAGE 7
Chip NTC Thermistor 2 957.738 977.979 998.548 2.10% 0.41 3 911.073 929.859 948.937 2.05% 0.40 4 866.952 884.385 902.078 2.00% 0.40 5 825.222 841.397 857.802 1.95% 0.39 6 785.670 800.672 815.878 1.90% 0.38 7 748.245 762.156 776.248 1.85% 0.37 8 712.824 725.721 738.777 1.80% 0.37 9 679.287 691.241 703.334 1.75% 0.36 10 647.524 658.601 669.799 1.70% 0.35 11 617.451 627.711 638.078 1.65% 0.34 12 588.947 598.448 608.041 1.60% 0.33 13 561.
PAGE 8
Chip NTC Thermistor 48 125.378 127.851 130.360 1.96% 0.51 49 120.601 123.027 125.489 2.00% 0.53 50 116.031 118.410 120.826 2.04% 0.54 51 111.658 113.991 116.361 2.08% 0.55 52 107.472 109.760 112.084 2.12% 0.57 53 103.465 105.707 107.986 2.16% 0.58 54 99.628 101.825 104.059 2.19% 0.59 55 95.952 98.105 100.295 2.23% 0.61 56 92.432 94.541 96.687 2.27% 0.62 57 89.059 91.124 93.227 2.31% 0.64 58 85.826 87.848 89.908 2.35% 0.65 59 82.727 84.
PAGE 9
Chip NTC Thermistor 94 25.698 26.619 27.571 3.57% 1.21 95 24.930 25.832 26.763 3.61% 1.22 96 24.190 25.073 25.984 3.64% 1.24 97 23.477 24.341 25.233 3.67% 1.26 98 22.789 23.634 24.508 3.70% 1.27 99 22.123 22.950 23.806 3.73% 1.29 100 21.480 22.290 23.128 3.76% 1.31 101 20.860 21.653 22.473 3.79% 1.33 102 20.259 21.035 21.838 3.82% 1.34 103 19.680 20.439 21.226 3.85% 1.36 104 19.118 19.862 20.632 3.88% 1.38 105 18.577 19.305 20.059 3.