B57621C472M62 EPCOS Inc, B57621C472M62 Datasheet - Page 2

• Manufacturer Part Number: B57621C472M62
• Description: THERMISTOR NTC 4.7K OHM 20% 1206
• Manufacturer: EPCOS Inc
• Series: B57621r

Specifications of B57621C472M62

• Resistance In Ohms @ 25°c: 4.7K
• Resistance Tolerance: ±20%
• B Value Tolerance: ±3%
• B25/50: 3430K
• B25/85: 3500K
• B25/100: 3520K
• Operating Temperature: -55°C ~ 125°C
• Power - Max: 300mW
• Mounting Type: Surface Mount
• Package / Case: 1206 (3216 Metric)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• B0/50: -
• B25/75: -
• Lead Length: -
• Other names: B57621C 472M 62; B57621C0472M062

R
100 k
150 k
220 k
330 k
470 k
+: J for R
Reliability data
SMD NTC thermistors are tested in accordance with IEC 60068. The parts are mounted on a
standardized PCB in accordance with IEC 60539-1.
Test
Storage in
dry heat
Storage in damp
heat, steady state
Rapid temperature
cycling
Endurance
Solderability
Resistance drift
after soldering
Temperature Measurement
SMD NTC Thermistors with Silver Palladium Termination, Size 1206
25
K for R
M for R
N
N
N
/R
/R
/R
No. of R/T
characteristic
4901
2903
2903
1014
1014
N
N
N
=
=
=
10 %
20 %
Standard
IEC
60068-2-2
JIS C 0021
IEC
60068-2-3
JIS C 0022
IEC
60068-2-14
JIS C 0025
IEC
60068-2-58
JIS C 0054
5 %
B
K
3870
4120
4120
4090
4090
25/50
Test conditions
Storage at upper
category temperature
T: (125
t: 1000 h
Temperature of air: (40
Relative humidity of air:
(93 +2/–3) %
Duration: 21 days
Lower test temperature: – 55 C
Upper test temperature: 125 C
Number of cycles: 10
P
T: (65
t: 1000 h
Solderability:
(215
(235
Resistance to soldering heat:
(260
Reflow soldering profile
Wave soldering profile
max
: 300 mW
3) C / (3
5) C / (2
5) C / (10
2) C
2) C
B
K
3930
4190
4190
4210
4210
61
25/85
05/02
0,3) s
0,2) s
1) s
B
K
3950
4200
4200
4250
4250
2) C
25/100
(typical)
< 3 %
< 3 %
< 3 %
< 5 %
< 5 %
R
25
/R
Ordering code
B57621C0104+062
B57621C0154+162
B57621C0224+062
B57621C0334+062
B57621C0474+062
25
Remarks
No visible
damage
95 % of
terminations
wetted
B57621
C 621