Datasheet

RND is a trademark of Distrelec
Type
X
Delimeter
104
Nominal Resistance
J
Tolerance
395 0
B Constant
RND 155QN0402: 0402
RND 155QN0603: 0603
RND 155QN0805: 0805
472 = 4.7 kΩ
683 = 68 kΩ
104 = 100 kΩ
F = ± 1%
3600 = 360 0 K
3950 = 3950 K
4050 = 4050 K
4500 = 4500 K
F
Tolerance of B Constant
Chip NTC Thermistor
RND 155QN0402
G = ± 2%
H = ± 3%
J = ±5 %
F = ± 1%
H = ± 3%
A
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 155QN0402X104J3950FA
100 kΩ ±5%
3950 K ±1%
3890 K
0.10 mA
1 mW / °C
<3 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
W
0.5 mm
0.8 mm
1.25 mm
T
0.5 mm
0.8 mm
0.85 mm
a
0.25 mm
0.3 mm
0.5 mm
A
0.45 ... 0.55 mm
0.6 ... 0.8 mm
1 ... 1.1 mm
B
0.4 ... 0.5 mm
0.6 ... 0.7 mm
0.6 ... 0.7 mm

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ϭ ... ϭϮ mm
Applications
PART NUMBER
Example: RND 155QN0402X104J3950FA
Features
• High testing precision
• Steady operating for long time
• Reflow soldering possible
• Short response time
• Temperature measurement
• Battery chargers
• Temperature sensing, protection and compensation in industrial, telecom and consumer applications
• Inrush current limiting, e.g. in switch-mode power supplies, soft-start motors