SOT143
4-PIN SMT Package
SOT143 Series
•
•
•
•
Ratio tolerances to ±0.05%
Small, industry standard package
Standard and custom circuits available
Standard Sn/Pb and Pb-free terminations available
Welwyn Components
Specifications
Characteristic
Package Pow er Dissipat ion
Power Derating Curve
Value
0.25 Watt s @ 70° C
0.1 Watt s @ 70° C
100 Volt s
100
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Temperature Coeff icient Tracking
±2ppm/° C
Temperature Coeff icient Absolut e
To ±25ppm/° C
Operat ing Temperature Range
-55° C t o +125° C
M aximum Volt age Rat ing
Element Pow er Dissipat ion
% Of Rated Power
50
10
25°
70°
125°
Temperature in °C
Physical Data (mm)
2.92 ± 0.1
0.1
max
1.0 ±0.1
0.56
±0.05
4
RECOMMENDED
PAD L AYOUT
1.91 ref.
1.91 BSC
3
1.45 ref.
4
3
1.0 ref.
0.43 min
0.51 max
0.076 min
0.178 max
2.36
±0.25
1
2
1.30±
0.1
2.21ref.
0.79 min.
1.02 min
1.19 max.
1
2
0.84
±0.1
0.635 ref.
0.56 ref.
General Note
Welwyn Components reserves the right to make changes in product specification without notice or liability.
All information is subject to Welwyn’s own data and is considered accurate at time of going to print.
© Welwyn Components Limited
Bedlington, Northumberland NE22 7AA, UK
A subsidiary of
TT electronics plc
SOT143 Series Issue June 2006
Telephone: +44 (0) 1670 822181 • Facsimile: +44 (0) 1670 829465 • Email: info@welwyn-tt.com • Website: www.welwyn-tt.com
SOT143
4-PIN SMT Package
Schematics
4
R1
Welwyn Components
3
4
3
4
3
4
3
R3
R2
R3
R2
R1
R3
R2
R3
R1
R2
Schematic A (series)
1
2
Schematic B (series)
1
2
Schematic C (isolated)
1
2
Schematic D (bussed)
1
2
Schematic / Circuit Detail
Circuit Details for Schematic A
Schematic/Circuit Code
Circuit Details for Schematic B
R3 (W)
50.0K
10.0K
9.0K
48.0K
40.0K
Schematic/Circuit Code
R1 (W)
500.0
10.0K
900.0
500.0
200.0
R2 (W)
50.0K
10.0K
100.0
48.0K
40.0K
R1 (W)
10.0K
900.0
1.0K
R2 (W)
10.0K
100.0
10.0K
R3 (W)
10.0K
9.0K
10.0K
A001
A002
A003
A004
A005
B001
B002
B003
Circuit Details for Schematic C
Schematic/Circuit Code
Circuit Details for Schematic D
R3 (W)
10.0K
1.0K
1.0K
750.0
40.0K
330.0
2.0K
2.0K
200.0
10.0K
Schematic/Circuit Code
R1 (W)
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
R2 (W)
10.0K
1.0K
9.0K
750.0
40.0K
33.0K
2.0K
10.0K
10.0K
2.1K
R1 (W)
121.0
2.0K
50.0K
5.4K
40.0K
10.0K
20.0K
R2 (W)
1.33K
1.0K
5.0K
5.4K
40.0K
10.0K
20.0K
R3 (W)
1.0K
2.0K
5.0K
27.5K
40.0K
20.0K
20.0K
C001
C002
C003
C004
C005
C006
C007
C008
C009
C010
D001
D002
D003
D004
D005
D006
D007
© Welwyn Components Limited
Bedlington, Northumberland NE22 7AA, UK
Telephone: +44 (0) 1670 822181 • Facsimile: +44 (0) 1670 829465 • Email: info@welwyn-tt.com • Website: www.welwyn-tt.com
SOT143 Series Issue June 2006
SOT143
4-PIN SMT Package
Environmental Data
Env i ronment al Tes t To MIL -PR F-83401
Thermal Shock
Char act er i s t i c H L i mi t
±0.5%
±0.5%
±0.1%
±0.2%
IRC Advanced Film Division
Max i mum
±0.1%
±0.1%
±0.1%
±0.1%
±0.1%
±0.1%
±0.1%
Ty pi cal Per f or mance
±0.02%
±0.03%
±0.02%
±0.05%
±0.03%
±0.03%
±0.05%
±0.02%
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Termi nal St rengt h
±0.25%
±0.1%
±0.02%
Resist ance to Solder Heat
±0.1%
±0.05%
L ife
±0.5%
M oi st ureResist ance
±0.4%
L ow Temperat ure Operat i on
±0.1%
Hi gh Temperat ure Exposure
Short Ti me Overload
Pow er Condi t i oni ng
Ordering Procedure
Style
SOT143 - 01 - A 002 - F B
Absolute TCR Code
00 = ±250ppm/°C; 01 = ±100ppm/°C
02 = ±50ppm/°C; 03 = ±25ppm/°C
Schematic Code
A, B, C, D
Circuit Number
See Schematic/Circuit Detail Tables
Absolute Tolerance Code
K = ±10%; J = ±5%; G = ±2%; F = ±1%
D = ±0.5%; C = ±0.25%; B = ±0.1%
Ratio Tolerance Code
G = ±2%; F = ±1%; D = ±0.5%
C = ±0.25%; B = ±0.1%; A = ±0.05%
Finish
Blank = pb-free
PB= SnPb
For additional information or to discuss your specific
requirements, please contact our Applications Team
© Welwyn Components Limited
Bedlington, Northumberland NE22 7AA, UK
Telephone: +44 (0) 1670 822181 • Facsimile: +44 (0) 1670 829465 • Email: info@welwyn-tt.com • Website: www.welwyn-tt.com
SOT143 Series Issue June 2006
PCB Design
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