KOA SPEER ELECTRONICS, INC.
SS-250 R4
AHA 5/01/08
Thick Film Linear Positive Tempco Thermistor LA73 Type
CERTIFIED
CERTIFIED
1. Features I Anti-leaching nickel barrier terminations I Marking: Black three-digit on orange body color I Twenty-five specifiable temperature characteristics I 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 2. Dimensions
c W t L c
Table 1 Part
1J (0603)
Solder Plating Ni Plating
L
0.063±0.008 (1.6±0.2) 0.079±0.008 (2.0±0.2) 0.126±0.008 (3.2±0.2)
Dimensions - inches (mm) W c
0.031±0.004 (0.8±0.1) 0.049±0.004 (1.25±0.1) 0.063±0.008 (1.6±0.2) 0.012±0.004 (0.3±0.1) 0.016±0.008 (0.4±0.2) 0.02±0.008 (0.5±0.3)
d
t
0.02±0.004 (0.5±0.1) 0.02±0.004 (0.5±0.1) 0.024±0.004 (0.6±0.1)
0.012±0.004 (0.3±0.1)
+0.008 0.012±... .. -0.004 +0.2 (0.3± -0.1 ) +0.008 0.016±... .. -0.004 +0.2 (0.4± -0.1 )
d
Protective Coating
Resistive Inner Film Electrode
2A (0805) 2B (1206)
Ceramic Substrate
3. Type Designation The type designation shall be in the following form:
LA73
Type
1J
Size Code
1J: 0603 2A: 0805 2B: 1206
T
Termination Material
T: Sn (Other termination styles available, contact factory for options)
TD
Packaging
TP: 7" Embossed Plastic 2mm pitch TD: 7" paper (5,000 pieces/reel)
101
Resistance Value
2 significant figures + 1 multiplier
J
Tolerance
J: ±5%
3300
T.C.R.
PAGE 1 OF 4 Bolivar Drive
I
P.O. Box 547
I
Bradford, PA 16701
I
USA
I
814-362-5536
I
Fax 814-362-8883
I
www.koaspeer.com
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
KOA SPEER ELECTRONICS, INC.
SS-250 R4
4. Standard Applications Table 1
Part Designation LA731J LA732A LA732B Thermal Dissipation Constant (mW/°C) 7.6 8.2 9.0 +70°C -55°C to +125°C Rated Ambient Temp. Operating Temp. Range
Table 2
Resistance Range E-12 LA731J 1KΩ - 10KΩ 680Ω - 6.8KΩ 470Ω - 4.7KΩ 470Ω - 3.9KΩ 330Ω - 2.7KΩ 330Ω - 2.7KΩ 220Ω - 1.8KΩ 100Ω - 1.2KΩ 100Ω - 1.2KΩ 100Ω - 390Ω 68Ω - 220Ω 33Ω - 120Ω 22Ω - 82Ω LA732A 1KΩ - 10KΩ 680Ω - 6.8KΩ 470Ω - 4.7KΩ 470Ω - 3.9KΩ 330Ω - 2.7KΩ 330Ω - 2.7KΩ 220Ω - 1.8KΩ 100Ω - 1.2KΩ 100Ω - 1.2KΩ 100Ω - 390Ω 68Ω - 220Ω 33Ω - 120Ω 22Ω - 82Ω LA732B 1KΩ - 10KΩ 680Ω - 6.8KΩ 470Ω - 4.7KΩ 470Ω - 3.9KΩ 330Ω - 2.7KΩ 330Ω - 2.7KΩ 220Ω - 1.8KΩ 100Ω - 1.2KΩ 100Ω - 1.2KΩ 100Ω - 390Ω 68Ω - 220Ω 33Ω - 120Ω 22Ω - 82Ω Resistance Tolerance T.C.R. (ppm/°C) Max. 1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 3000 3300 3600 T.C.R. Tolerance
±100ppm/°C
J: ±5%
±5%
PAGE 2 OF 4 Bolivar Drive
I
P.O. Box 547
I
Bradford, PA 16701
I
USA
I
814-362-5536
I
Fax 814-362-8883
I
www.koaspeer.com
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
KOA SPEER ELECTRONICS, INC.
SS-250 R4
6. Environmental Applications 6.1 Derating Curve
100 80 % Rated Power 60 Resistance Changing Rate (∆R) 40 30 20 10 0
6.2 Temperature Characteristics
3600ppm/∞C 3000ppm/∞C 2000ppm/∞C 1000ppm/∞C
40 20 0 -60 -40 -55
-10 -20 -30 -40 -75 -50 -25 0 Ambient Temperature (∞C) 25 50 75 100 125
-20
0
70 Ambient Temperature (∞C)
20
40
60
80
100 120 140 125
7. Approximate Expression for Resistance-Temperature Characteristics
T.C.R. (x10-6/K) 3000 3300 3600 C0 0.926 0.918 0.910 C1 0.00294 0.00325 0.00359 C2 1.1 x 10-7 4.1 x 10-7 1.7 x 10-7 (Values are not guaranteed but typical) RT=R25 (C0+C1T+C2T2) RT: Resistance value at T°C R25: Resistance value at 25°C T: Ambient temperature (°C) C0, C1, C2: Constants
8. Characteristics
Parameter Resistance T.C.R. Short Time Overload Resistance to Solder Heat Solderability Bending Test Temperature Cycling Moisture Resistance Load Life Requirement ∆ R Within regulated tolerance Within specified T.C.R. ±(1.0% + 0.1Ω): 1J, 2A, 2B 95% coverage minimum ±(1.0% + 0.1Ω): 1J, 2A, 2B ±(3.0% + 0.1Ω): 1J, 2A, 2B Test Method 25°C +25°C/+75°C Rated voltage x 2.5 or max. working voltage x 2 for 5 seconds, whichever is less 260°C ± 5°C, 10 seconds ± 1 second 235°C ± 5°C, 2 seconds ± 0.5 seconds Width of holding point 90mm, bending 3mm, 1 time -55°C (30 minutes), +125°C (30 minutes), 100 cycles 40°C ± 2°C, 90 - 95% RH, 1000 hours, rated voltage load 70°C ± 3°C, 1000 hours, rated voltage load
PAGE 3 OF 4 Bolivar Drive
I
P.O. Box 547
I
Bradford, PA 16701
I
USA
I
814-362-5536
I
Fax 814-362-8883
I
www.koaspeer.com
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
KOA SPEER ELECTRONICS, INC.
SS-250 R4
9. Packaging Specifications
(Notes) Dotted lines are applicable to only "TP."
Dimensions - inches (mm)
Style 2A 2B 1J A 0.75±0.004 (1.9±0.1) 0.94±0.008 (2.4±0.2) 0.45±0.004 (1.15±0.1) B 0.043±0.004 (1.1±0.1) 0.065±0.008 (1.65±0.2) 0.026±0.004 (0.65±0.1) 0.31±0.008 (8.0±0.2) W P1 0.16±0.004 (4.0±0.1) 0.78±0.002 (2.0±0.05) T1 0.024+0.008/-0 (0.6+0.2/-0) 0.03+0.008/-0 (0.75+0.2/-0) 0.018+0.004/-0 (0.45+0.1/-0)
(Notes) Reel holes, shapes and design are examples
Dimensions - inches (mm)
Style 2A 2B 1J Tape Punched Carrier TD øa 7±.078 (178±2) B 2.36±.078 (60±2) D 0.35±.059 (9±1.5) ød .83 (21)
PAGE 4 OF 4 Bolivar Drive
I
P.O. Box 547
I
Bradford, PA 16701
I
USA
I
814-362-5536
I
Fax 814-362-8883
I
www.koaspeer.com
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
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