58 05/02
Applications
■Temperature measurement and
compensation in
–hybrid circuits
–data systems
–telecom systems
–automotive electronics
Features
■Silver palladium termination (AgPd)
■Cost-effective
■Suitable for wave and reflow soldering
Options
Alternative resistance ratings and resistance tolerance
< 5% available on request
Delivery mode
Blister tape, 180-mm reel, PU: 4000 pcs
+: J for ∆RN/RN = ± 5 %
Kfor
∆RN/RN = ± 10 %
Mfor
∆RN/RN = ± 20 %
Climatic category (IEC 60068-1)
Max. power at 25 °C (on PCB) P25
Resistance tolerance ∆RN/RN
Rated temperature TN
B value tolerance ∆B/B
Dissipation factor (on PCB) δth1)
Thermal cooling time constant (on PCB) τc1)
Heat capacity Cth1)
55/125/21
210
± 5 %, ± 10 %, ± 20 %
25
± 3 %
approx. 3,5
approx. 10
approx. 35
mW
°C
mW/K
s
mJ/K
R25
Ω
No. of R/T
characteristic
B25/50
K
B25/85
K
B25/100
K
Ordering code
220 3207 3060 3090 3100 B57620C0221+062
330 3204 3190 3250 3250 B57620C0331+062
470 3205 3270 3290 3300 B57620C0471+062
680 3206 3420 3440 3450 B57620C0681+062
1 k 3206 3420 3440 3450 B57620C0102+062
2,2 k 1304 3250 3280 3300 B57620C0222+062
4,7 k 1010 3470 3510 3530 B57620C0472+962
Dimensions in mm
Approx. weight 13 mg
Termination
0,5±0,25
1,25±0,15
2,0±0,2
TNT0397-7-E
1,3 max.
1) Depends on mounting situation
B57620Temperature Measurement
C620
SMD NTC Thermistors with Silver Palladium Termination, Size 0805
59 05/02
+: J for ∆RN/RN = ± 5 %
Kfor
∆RN/RN = ± 10 %
Mfor
∆RN/RN = ± 20 %
R25
Ω
No. of R/T
characteristic
B25/50
K
B25/85
K
B25/100
K
Ordering code
10 k 1011 3660 3730 3730 B57620C0103+062
22 k 2003 3930 3960 3980 B57620C0223+062
47 k 2101 4030 4080 4100 B57620C0473+062
100 k 2903 4120 4190 4200 B57620C0104+162
220 k 2904 4230 4280 4300 B57620C0224+062
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 Standard Test conditions ∆R25/R25
(typical)
Remarks
Storage in
dry heat
IEC
60068-2-2
JIS C 0021
Storage at upper
category temperature
T: (125 ± 2) °C
t: 1000 h
< 3 %/
< 6 %1)
Storage in damp
heat, steady state
IEC
60068-2-3
JIS C 0022
Temperature of air: (40 ± 2) °C
Relative humidity of air:
(93 +2/–3) %
Duration: 21 days
< 3 % No visible
damage
Rapid temperature
cycling
IEC
60068-2-14
JIS C 0025
Lower test temperature: – 55 °C
Upper test temperature: 125 °C
Number of cycles: 10
< 3 %
Endurance Pmax: 210 mW
T: (65 ± 2) °C
t: 1000 h
< 5 %
Solderability IEC
60068-2-58
JIS C 0054
Solderability:
(215 ± 3) °C / (3 ± 0,3) s
(235 ± 5) °C / (2 ± 0,2) s
Resistance to soldering heat:
(260 ± 5) °C / (10 ± 1) s
95 % of
terminations
wetted
Resistance drift
after soldering
Reflow soldering profile
Wave soldering profile
< 5 %
1) The higher value applies to 220 Ω–1kΩ types.
B57620Temperature Measurement
C620
SMD NTC Thermistors with Silver Palladium Termination, Size 0805
Herausgegeben von EPCOS AG
Unternehmenskommunikation, Postfach 80 17 09, 81617 München, DEUTSCHLAND
(
++49 89 636 09, FAX (0 89) 636-2 26 89
EPCOS AG 2002. Vervielfältigung, Veröffentlichung, Verbreitung und Verwertung dieser Broschüre und ihres Inhalts ohne aus-
drückliche Genehmigung der EPCOS AG nicht gestattet.
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zuholen.
Published by EPCOS AG
Corporate Communications, P.O. Box 80 17 09, 81617 Munich, GERMANY
(
++49 89 636 09, FAX (0 89) 636-2 26 89
EPCOS AG 2002. Reproduction, publication and dissemination of this brochure and the information contained therein without
EPCOS’ prior express consent is prohibited.
Purchase orders are subject to the General Conditions for the Supply of Products and Services of the Electrical and Electronics
Industry recommended by the ZVEI (German Electrical and Electronic Manufacturers’ Association), unless otherwise agreed.
This brochure replaces the previous edition.
For questions on technology, prices and delivery please contact the Sales Offices of EPCOS AG or the international Representa-
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also contact one of our Sales Offices.
