Document
NT73
negative tempco thermistor features • • • • • Anti-leaching nickel barrier terminations Twelve standard resistance values Suitable for reflow and wave soldering Marking: Black three-digit on pink body color Products with lead-free terminations meet RoHS requirements
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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 available, 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%
Thermal Dissipation Constant (mW/°C)
Power Rating (mW)
Operating Temperature Range
±5%
±3%
NEW
NT731J
J: ±5% K: ±10%
2
3800K
5
±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. 1/05/06
148
KOA Speer Electronics, Inc. • Bolivar Drive • P .O. Box 547 • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
NT73
negative tempco thermistor applications and ratings (continued)
Part Designation Resistance @ 25°C
1kΩ 2kΩ 2.2kΩ 2.4kΩ 3.3kΩ 4.7kΩ 5kΩ 6.8kΩ 10kΩ 15kΩ 10kΩ 20kΩ 22kΩ 30kΩ 33kΩ 47kΩ 68kΩ 100kΩ 150kΩ 50kΩ 10kΩ 15kΩ 22kΩ 30kΩ 33kΩ 47kΩ 68kΩ 100kΩ 150kΩ 1kΩ 2.2kΩ 3.3kΩ 4.7kΩ 6.8kΩ 10kΩ 22kΩ 33kΩ 47kΩ 68kΩ 100kΩ
Resistance Tolerance
B Constant @ 25°C/75°C
3200K
B Constant Tolerance
K: ±10% L: ±15%
3500K
±10%
3800K 3500K
www.DataSheet4U.com NT732A
3800K
±5%
2.8
5 -55°C to +125°C
J: ±5% K: ±10% L: ±15%
3950K
4100K
±3%
3200K
K: ±10% L: ±15% J: ±5% K: ±10% L: ±15%
3500K
±10% 3 5
NT732B
3800K
±5%
environmental applications Temperature Characteristics
10,000,000 1,000,000 Resistance (Ω) 100,000 10,000 1,000 100 10 -50 -25 0 25 50 75 Temperature (°C) 100
100kΩ 10kΩ 1kΩ
3800k
RT/R25 Ratio vs. B Constant
Resistance 1k Ω 5k Ω 10k Ω 100k Ω 10kΩ Resistance 1k Ω 5k Ω 10k Ω 100k Ω 10kΩ B Constant 3200K 3500K.