Temperature Measurement
SMD NTC Thermistors with Silver Palladium Termination, Size 1206
Applications
I
Temperature measurement and
B57621
C 621
1,6±0,2
1,3 max.
compensation in
– hybrid circuits
– data systems
– telecom systems
– automotive electronics
Features
I
Silver palladium termination (AgPd)
I
Cost-effective
I
Suitable for wave and reflow soldering
3,2±0,2
Termination
0,5±0,25
TNT0398-F
Options
Alternative resistance ratings and resistance tolerance
<
5% available on request
Delivery mode
Dimensions in mm/Approx. weight 18 mg
Blister tape, 180-mm reel, PU: 4000 or 2000 pcs, depending on chip thickness
Climatic category (IEC 60068-1)
Max. power at 25
°
C (on PCB)
Resistance tolerance
Rated temperature
B
value tolerance
Dissipation factor (on PCB)
Thermal cooling time constant (on PCB)
Heat capacity
R
25
No. of
R/T
characteristic
1308
1309
1309
1010
1008
1008
2003
2001
2001
B
25/50
K
3010
3430
3430
3470
3480
3480
3930
3860
3860
P
25
∆
R
N
/R
N
T
N
∆
B/B
δ
th
1)
τ
c
1)
C
th
1)
B
25/85
K
3040
3500
3500
3510
3550
3550
3960
3890
3890
55/125/21
300
±
5 %,
±
10 %,
±
20 %
25
±
3%
approx. 5
approx. 10
approx. 50
B
25/100
K
3060
3520
3520
3530
3560
3560
3980
3920
3920
B57621C0222+062
B57621C0332+062
B57621C0472+062
B57621C0103+062
B57621C0153+062
B57621C0223+062
B57621C0333+062
B57621C0473+062
B57621C0683+062
mW
°
C
mW/K
s
mJ/K
Ordering code
Ω
2,2 k
3,3 k
4,7 k
10 k
15 k
22 k
33 k
47 k
68 k
+: J for
∆
R
N
/R
N
=
±
5 %
K for
∆
R
N
/R
N
=
±
10 %
M for
∆
R
N
/R
N
=
±
20 %
60
05/02
1) Depends on mounting situation
Temperature Measurement
SMD NTC Thermistors with Silver Palladium Termination, Size 1206
B57621
C 621
R
25
No. of
R/T
characteristic
4901
2903
2903
1014
1014
B
25/50
K
3870
4120
4120
4090
4090
B
25/85
K
3930
4190
4190
4210
4210
B
25/100
K
3950
4200
4200
4250
4250
Ordering code
Ω
100 k
150 k
220 k
330 k
470 k
B57621C0104+062
B57621C0154+162
B57621C0224+062
B57621C0334+062
B57621C0474+062
+: J for
∆
R
N
/R
N
=
±
5 %
K for
∆
R
N
/R
N
=
±
10 %
M for
∆
R
N
/R
N
=
±
20 %
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
Standard
IEC
60068-2-2
JIS C 0021
IEC
60068-2-3
JIS C 0022
IEC
60068-2-14
JIS C 0025
Test conditions
Storage at upper
category temperature
T:
(125
±
2)
°
C
t:
1000 h
Temperature of air: (40
±
2)
°
C
Relative humidity of air:
(93 +2/–3) %
Duration: 21 days
∆
R
25
/R
25
(typical)
<3%
Remarks
Storage in damp
heat, steady state
<3%
No visible
damage
Rapid temperature
cycling
Endurance
Lower test temperature: – 55
°
C < 3 %
Upper test temperature: 125
°
C
Number of cycles: 10
P
max
: 300 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%
61
05/02
Herausgegeben von EPCOS AG
Unternehmenskommunikation, Postfach 80 17 09, 81617 München, DEUTSCHLAND
++49 89 636 09, FAX (0 89) 636-2 26 89
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EPCOS AG 2002. Vervielfältigung, Veröffentlichung, Verbreitung und Verwertung dieser Broschüre und ihres Inhalts ohne aus-
drückliche Genehmigung der EPCOS AG nicht gestattet.
Bestellungen unterliegen den vom ZVEI empfohlenen Allgemeinen Lieferbedingungen für Erzeugnisse und Leistungen der Elek-
troindustrie, soweit nichts anderes vereinbart wird.
Diese Broschüre ersetzt die vorige Ausgabe.
Fragen über Technik, Preise und Liefermöglichkeiten richten Sie bitte an den Ihnen nächstgelegenen Vertrieb der EPCOS AG
oder an unsere Vertriebsgesellschaften im Ausland. Bauelemente können aufgrund technischer Erfordernisse Gefahrstoffe ent-
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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
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