NT73
negative tempco thermistor
EU
features
•
•
•
•
Anti-leaching nickel barrier terminations
Twelve standard resistance values
Suitable for reflow and wave soldering
Marking: 1J no marking on pink body, 2A
and 2B black three digit on pink body color
•
Products with lead-free terminations meet EU RoHS
requirements. Pb located in glass material, electrode
and resistor element is exempt per Annex 1, exemption
5 of EU directive 2005/95/EC
circuit
protection
dimensions and construction
c
L
c
Type
(Inch Size Code)
L
Dimensions
inches
(mm)
W
c
d
t
.02±.004
(0.5±0.1)
+.008
-.004
(0.5
+0.2
)
-0.1
W
Solder
Plating
t
d
Protective
Coating
Resistive Inner
Film
Electrode
Ni
Plating
1J
(0603)
2A
(0805)
2B
(1206)
.063±.008 .031±.004 .012±.004 .012±.004
(1.6±0.2)
(0.8±0.1)
(0.3±0.1)
(0.3±0.1)
.079±.008 .049±.004 .016±.008
(2.0±0.2) (1.25±0.1) (0.4±0.2)
.126±.008 .063±.008
(3.2±0.2)
(1.6±0.2)
.02±.008
(0.5±0.3)
.012
(0.3
.016
(0.4
+.008
-.004
+0.2
)
-0.1
+.008
-.004
+0.2
-0.1
)
.02
.024±.004
(0.6±0.1)
Ceramic
Substrate
ordering information
New Part #
NT73
Type
2A
Size
Code
1J: 0603
2A: 0805
2B: 1206
T
Termination
Material
T: Sn
(Other termination
styles may be
available, please
contact factory
for options)
TD
Packaging
TD: 7"
paper tape
(5,000
pieces/reel)
103
Nominal
Resistance
2 significant
figures + 1
multiplier
K
Resistance
Tolerance
J: ±5%
K: ±10%
L: ±15%
3800
B Constant
Nominal
3200
3500
3700
3800
3950
4100
J
B Constant
Tolerance
H: ±3%
J: ±5%
K: ±10%
applications and ratings
Part
Designation
Resistance
@ 25°C
6.8kΩ
10kΩ
15kΩ
10kΩ
20kΩ
22kΩ
30kΩ
33kΩ
47kΩ
68kΩ
100kΩ
47kΩ
Resistance
Tolerance
B Constant
@ 25°C/75°C
3500K
3800K
3700K
B Constant
Tolerance
±10%
Power
Rating
(mW)
Operating
Temperature
Range
±5%
±3%
NT731J
J: ±5%
K: ±10%
5
3800K
±5%
±3%
-55°C
to
+125°C
4100K
For further information on packaging,
please refer to Appendix A.
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
12/31/08
154
KOA Speer Electronics, Inc.
• 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
KOA [ KOA SPEER ELECTRONICS, INC. ]
