KOA SPEER ELECTRONICS, INC.
SS-239 R6
AHA 9/29/11
Bolivar Drive
P.O. Box 547
Bradford, PA 16701
USA
814-362-5536
Fax 814-362-8883
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.
PAGE 1 OF 8
Low Resistance Flat Chip Resistors
Type SR73
1. Scope
This specification applies to chip resistors (SR73) produced by KOA Corporation.
2. Type Designation
The type designation shall be in the following form:
3. Dimensions and Structure
3-1 Dimensions
Tolerance
D: ±0.5%
F: ±1%
G: ±2%
J: ±5%
F
Termination
Material
T: Sn
(Other termination
styles may be
available, please
contact factory
for options)
G: Au (2A: 0.1Ω-
10Ω- contact
factory)
TSR73
Size Size
1H
1E
1J
2A
2B
2E
W2H
W3A
2H*
3A*
2B
Nominal
Resistance
±2%, ±5%: 2 significant figures +
1 multiplier “R” indicates decimal
on value <10Ω
±1%: 3 significant figures + 1
multiplier “R” indicates decimal
on value <100Ω
All values less than 0.1Ω (100mΩ)
are expressed in mΩ with “L” as
decimal Example: 20mΩ = 20L0
1R00
Packaging
TCM: 0201 only: 7" 2mm pitch pressed paper
TPL:0402 only: 2mm pitch punch paper
TP: 0402, 0603, 0805: 7" 2mm pitch
punch paper
TD: 0603, 0805, 1206, 1210:
7" 4mm pitch punched paper
TDD: 0603, 0805, 1206, 1210: 10" paper tape
TE: 0805, 1206, 1210, 2010 & 2512:
7" punched plastic
TED: 0805, 1206, 1210, 2010 & 2512:
10" punched plastic
TD
CERTIFIED
CERTIFIED
* Not recommended for new designs
Type
L
.039 +.004
-.002
(1.0 +0.1 )
-0.05
.01±.004
(0.25±0.1)
.012 +.008
-.004
(0.3 +0.2)
-0.1
.016 +.008
-.004
(0.4 +0.2)
-0.1
.016 +.008
-.004
(0.4 +0.2)
-0.1
.014±.002
(0.35±0.05)
.018±.004
(0.45±0.1)
.014±.004
(0.35±0.1)
.02±.004
(0.5±0.1)
.024±.004
(0.6±0.1)
.01±.004
(0.25±0.1)
.014±.004
(0.35±0.1)
.016±.008
(0.4±0.2)
.02±.012
(0.5±0.3)
.009±.001
(0.23±0.03)
.006±.002
(0.15±0.05)
.026±.006
(0.65±0.15)
.026±.006
(0.65±0.15)
.004±.002
(0.1±0.05)
.063±.008
(1.6±0.2)
.102±.008
(2.6±0.2)
.098±.008
(2.5±0.2)
.126±.008
(3.2±0.2)
.049±.004
(1.25±0.1)
.031 +.006
-.004
(0.8 +0.15)
-0.1
.02 +.004
-.002
(0.5 +0.1 )
-0.05
.063±.008
(1.6±0.2)
.079±.008
(2.0±0.2)
.197±.008
(5.0±0.2)
.024±.001
(0.6±0.03)
1E
(0402)
1J
(0603)
2A
(0805)
2B
(1206)
.012±.001
(0.3±0.03)
1H
(0201)
2H
(2010)
W2H
(2010)
.122±.008
(3.1±0.2)
.248±.008
(6.3±0.2)
3A
(2512)
W3A
(2512)
(Inch Size Code) Wc d t
Dimensions inches (mm)
2E
(1210)
Protective
Coating Inner
Electrode
Resistive
Film
Ceramic
Substrate
Solder
Plating
Ni
Plating
Lcc
W
t
d
Bolivar Drive
P.O. Box 547
Bradford, PA 16701
USA
814-362-5536
Fax 814-362-8883
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.
PAGE 2 OF 8
KOA SPEER ELECTRONICS, INC.
SS-239 R6
5. Rating
5-1 Rating
For temperature in excess of 70°C,
the load shall be derated in accordance
with the following figure.
4. Standard Applications
Derating Curve Surface Temperature Rise
% Rated Power
100
80
60
40
20
-60 -40 0 40 60 80 100 160
70
20
Ambient Temperature
(°C)
0
-55
120
125
-20 140
150
1H
1E, 1J,
2A, 2B, 2E,
2H, 3A,
W2H, W3A
Temperature Rise
(°C)
180
160
120
80
40
25 50 75 100
% Rated Power
W3A (1W)
W2H (.75W)
2E (.5W)
2A (.25W)
)
0
0
140
100
60
20
2E (.66W)
2B (.5W)
2A (.33W)
1J (.2W)
1E (.166W)
2B (.33W)
Measuring Point
1E (.125W
1H (.1W)
* Parentheses indicate EIA package size codes. ** 1H, 1E (F: ±1%) E-24 values only.
1Please contact factory for limitation of Surface Mount Temperature Rise.
2SR73W3AS (2010 size, 1 Watt) with limited Resistance Range - contact factory for details.
Absolute
Maximum
Working
Voltage
E-24, E-96
(F±1%)
E-24
(G±2%)
E-24
(J±5%)
Part
Designation*
Maximum
Overload
Voltage
(5 Secs. Max.)
Operating
Temperature
Range
Power
Rating
@ 70°C
SR731E
(0402)
SR731J
(0603)
0.51Ω - 10Ω**
0.22Ω - 0.47Ω**
0.1Ω - 0.2Ω**
0.51Ω - 10Ω
0.22Ω - 0.47Ω
0.1Ω - 0.2Ω
0.1Ω - 10Ω0.1Ω - 10Ω0.1Ω - 10Ω
0.51Ω - 10Ω
0.22Ω - 0.47Ω1.11V 2.79V
1.41V 3.53V
0.1Ω - 0.2Ω
±200
±250
1/8W (.125W)
1/6W (.166W1)
1/5W (.2W)
SR732A
(0805) 1.58V 3.95V
1/4W (.25W)
1/3W (.33W1)
±300
±200
Resistance RangeT.C.R.
(ppm/°C)
Max.
-55°C
to
+150°C
-55°C to
+125°C
0.1Ω - 10Ω
±100
0.1Ω - 10Ω±200 0.1Ω - 10Ω
±500 0.051Ω - 0.091Ω
±800 0.030Ω - 0.047Ω
SR732B
(1206) 1.81V 4.54V
1/3W (.33W)
1/2W (.5W1)
0.1Ω - 10Ω±100
0.1Ω - 10Ω±200 0.1Ω - 10Ω
±500 0.056Ω - 0.091Ω
±800 0.030Ω - 0.051Ω
SR732H/W2H2
(2010) 2.73V 6.84V3/4W (.75W)
0.1Ω - 10Ω±100
0.1Ω - 10Ω±200 0.1Ω - 10Ω
±500 0.056Ω - 0.091Ω
±800 0.033Ω - 0.051Ω
SR733A/W3A
(2512) 3.16V 7.90V1W
0.1Ω - 10Ω±100
0.1Ω - 10Ω±200 0.1Ω - 10Ω
±500 0.056Ω - 0.091Ω
±800 0.039Ω - 0.051Ω
SR732E
(1210) 2.23V 5.59V
1/2W (.5W)
2/3W (.66W1)
0.1Ω - 10Ω±100
0.1Ω - 10Ω±200 0.047Ω - 10Ω
±500 0.036Ω - 0.043Ω
±1000 0.024Ω - 0.033Ω
E-24, E-96
(D±0.5%)
SR731H
(0201) 1Ω - 10Ω**
0.18Ω - 0.24Ω
0.27Ω - 10Ω1.0V 2.5V0.1W 0 - ±500
0 - ±400
0.15Ω - 10Ω
0.15Ω - 10Ω
KOA SPEER ELECTRONICS, INC.
SS-239 R6
Bolivar Drive
P.O. Box 547
Bradford, PA 16701
USA
814-362-5536
Fax 814-362-8883
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.
PAGE 3 OF 8
5-2 Voltage Rating
Resistors shall have a rated direct-current (DC)
continuous working voltage or approximate
sine-wave root-mean-square (RMS) continuous
working voltage at commercial-line frequency
and waveform corresponding to the power rating,
as determined from the following formula:
Where:
E= Rated voltage (V)
E =
P x R P= Rated power (W)
R= Nominal resistance (Ω)
In no case shall be rated DC or R.M.S. continuous
working voltage be greater than the applicable
maximum value.
6. Body and Marking
Type Tolerance Coating Marking
Color Color
SR73 D (±0.5%) Indigo White/ 4 digit
F (±1%)
SR73 G (±2%) Indigo White/ 3 digit
J (±5%)
Marking: a effective number and a multiplier. R means a decimal point.
7. Marking Method
This character indicate Ω unit and
D, F 4 digit express 4 effective numbers.
R means a decimal point.
This character indicate Ω unit and
G, J 3 digit express 3 effective numbers.
R means a decimal point.
0.2 Ω
3 Digit
R20
4.7 Ω
R200
4R7 4R70
4 Digit
Bolivar Drive
P.O. Box 547
Bradford, PA 16701
USA
814-362-5536
Fax 814-362-8883
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.
PAGE 4 OF 8
KOA SPEER ELECTRONICS, INC.
SS-239 R6
Item Requirement Test Methods (JIS C 5202)
Resistance Within tolerance 5.1
Measuring Voltage A, 25 °C
Resistance of Within specified R.T.C 5.2 Condition B
Temperature Coefficient -55°C/125°C
Short Time Overload ± 2.0% 5.5 Condition A
Intermittent Overload ± 5.0% 5.8
Applied Voltage: RV x 2.5
Insulation Above 104 MΩ5.5 500V DC
The following sketch:
\
8-2 Electrical Characteristics
Item Requirement Test Methods (JIS C 5202)
Withstanding No visual damage 6.10
Soldering Heat ± 1.0% 260°C ± 5°C
10 ± 1 sec.
Solderability More than 95% of the surface of the termination 6.11
must be covered new solder 230°C ± 5°C
3 ± 0.5 sec.
Termination Strength ± 1.0% 6.1.4
1) Bending 2A, 2B
Circuit board bending 5mm
Circuit board bending 2mm
2) Shear
3) Pull-off strength
Vibration ± 0.5% 6.3 Condition A
Each direction / 2hrs
Withstanding Solvent No visual & mechanical damage 1) 4.2 and 4.9
2) MIL-STD-202F
Test method 215
8. Characteristics
8-1 Mechanical Characteristics
KOA SPEER ELECTRONICS, INC.
SS-239 R6
Bolivar Drive
P.O. Box 547
Bradford, PA 16701
USA
814-362-5536
Fax 814-362-8883
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.
PAGE 5 OF 8
Item Requirement Test Methods (JIS C 5202)
Thermal Shock ± 1.0% -40°C 30 minutes
(Air to Air) 125°C 30 minutes
100 cycles
High Temperature ± 1.0% 7.2
Exposure 125 ± 3°C
1000 hrs.
Load Life in Humidity ± 2.0% 7.9
40 ± 2°C
90 ~ 95% RH
1000 hrs.
Load Life ± 2.0% 7.10
70 ± 3°C
1000 hrs.
8-3 Environmental Characteristics
Item Requirement Test Methods (JIS C 5202)
Insulation Above 103 MΩ5.6 500V DC
The following sketch:
Withstanding Voltage ± 0.5% 5.7 500V DC
60 ± 10/0 sec.
The following sketch:
Temperature Rise 1) Surface temp. rise: 100°C5.4
(Rated Load) 2) R ± 0.5% 1) Test board 90mm x 10mm x 1.6mm
2) Recommended land dimensions
\
8-2 Electrical Characteristics (Continued)
10. Taping
10-1 Taped Configuration Dimensions in inches (mm)
End tape
(Empty) (Empty)Leader tape
15.75
(400) min.
7.87 (200) min. 1.96 (50) min.
(Top tape)
Bolivar Drive
P.O. Box 547
Bradford, PA 16701
USA
814-362-5536
Fax 814-362-8883
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.
PAGE 6 OF 8
KOA SPEER ELECTRONICS, INC.
SS-239 R6
Dimensions in inches (mm)
Type Style Resistor Size AB CD
0.039 x 0.020 0.020 0.051 0.012 0.016
1 E (1.0 x 0.5) (0.5) (1.3) (0.3) (0.4)
0.063 x 0.031 0.039 0.079 0.024 0.020
1 J (1.6 x 0.8) (1.0) (2.0) (0.6) (0.5)
0.079 x 0.049 0.051 0.098 0.041 0.024
2 A (2.0 x 1.25) (1.3) (2.5) (1.05) (0.6)
0.126 x 0.063 0.087 0.157 0.055 0.035
SR73 2 B (3.2 x 1.6) (2.2) (4.0) (1.4) (0.9 )
0.126 x 0.098 0.087 0.157 0.091 0.035
2 E (3.2 x 2.5) (2.2) (4.0) (2.3) (0.9 )
0.197 x 0.098 0.138 0.248 0.091 0.055
2 H (5.0 x 2.5) (3.5) (6.3) (2.3) (1.4 )
0.252 x 0.126 0.181 0.315 0.118 0.067
3 A (6.4 x 3.2) (4.6) (8.0) (3.0) (1.7)
9-2 Reflow Soldering
B
C
AD
Soldering Pad
Chip Resistor
Dimensions in inches (mm)
Type Style Resistor Size AB CD
0.039 x 0.020 0.020 0.059 0.020 0.020
1 E (1.0 x 0.5) (0.5) (1.5) (0.5) (0.5)
0.063 x 0.031 0.039 0.094 0.031 0.028
1 J (1.6 x 0.8) (1.0) (2.4) (0.8) (0.7)
0.079 x 0.049 0.051 0.122 0.049 0.035
2 A (2.0 x 1.25) (1.3) (3.1) (1.25) (0.9)
0.126 x 0.063 0.087 0.173 0.063 0.043
SR73 2 B (3.2 x 1.6) (2.2) (4.4) (1.6) (1.1 )
0.126 x 0.098 0.087 0.173 0.098 0.043
2 E (3.2 x 2.5) (2.2) (4.4) (2.5) (1.1 )
0.197 x 0.098 0.138 0.248 0.098 0.055
2 H (5.0 x 2.5) (3.5) (6.3) (2.5) (1.4 )
0.252 x 0.126 0.181 0.315 0.126 0.067
3 A (6.4 x 3.2) (4.6) (8.0) (3.2) (1.7)
9. Recommended Land Dimensions
9-1 Flow Soldering
B
C
AD
Soldering Pad
Chip Resistor
Bolivar Drive
P.O. Box 547
Bradford, PA 16701
USA
814-362-5536
Fax 814-362-8883
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.
PAGE 7 OF 8
KOA SPEER ELECTRONICS, INC.
SS-239 R6
10-2 Dimensions of
Punched Paper Tape
Type
Component Size (mm)
LWT
Quantity/
Reel
(Pieces)
Taping (mm)
Reel
Size
ABW P1 T1
Carrier
Tape
1E 1 0.5 0.35 TP 10000 1.15±0.1 0.65±0.1 8.0±0.2 2±0.05 0.45+0.2/-0 178
TP 10000 1.9±0.1 1.1±0.1 8.0±0.2 2±0.05 0.6+0.2/-0 178
1J 1.6 0.8 0.45 TD 5000 1.9±0.1 1.1±0.08 8.0±0.2 4.0±0.1 0.6+0.2/-0 178
TDD 10000 1.9±0.1 1.1±0.1 8.0±0.2 4.0±0.1 0.6+0.2/-0 255
TP 10000 2.4±0.2 1.65±0.2 8.0±0.2 2±0.05 0.75+0.2/-0 178
TD 5000 2.4±0.2 1.65±0.2 8.0±0.2 4.0±0.1 0.75+0.2/-0 178
2A 2 1.25 0.5 TE 4000 2.4±0.2 1.6±0.2 8.0±0.2 4.0±0.1 0.9±0.1 178
TDD 10000 2.4±0.1 1.65±0.1 8.0±0.2 4.0±0.1 0.75+0.2/-0 255
TED 10000 2.4±0.2 1.45±0.15 8.0±0.2 4.0±0.1 0.65±0.1 255
TD 5000 3.5±0.2 2±0.2 8.0±0.2 4.0±0.1 0.75+0.2/-0 178
2B 3.2 1.6 0.6 TE 4000 3.5±0.2 1.9±0.2 8.0±0.2 4.0±0.1 1.0±0.1 178
TDD 10000 3.5±0.1 1.9±0.1 8.0±0.2 4.0±0.1 0.75+0.2/-0 255
TED 10000 3.5±0.1 1.9±0.2 8.0±0.2 4.0±0.1 1.0±0.1 255
TD 5000 3.5±0.2 2.85±0.2 8.0±0.2 4.0±0.1 0.75+0.2/-0 178
2E 3.2 2.6 0.6 TE 4000 3.5±0.2 2.85±0.2 8.0±0.2 4.0±0.1 1.0±0.15 178
TDD 10000 3.5±0.1 2.8±0.1 8.0±0.2 4.0±0.1 0.75+0.2/-0 255
TED 10000 3.6±0.15 2.9±0.15 8.0±0.2 4.0±0.1 1.0±0.1 255
2H 5 2.5 0.6 TE 4000 5.35±0.2 2.9±0.2 12.0±0.1 4.0±0.1 1.0±0.15 178
TED 10000 5.4±0.2 2.9±0.2 12.0±0.1 4.0±0.1 0.85±0.1 255
3A 6.3 3.1 0.6 TE 4000 6.65±0.2 3.44±0.2 12.0±0.1 4.0±0.1 1.0±0.15 178
TED 10000 6.9±0.2 3.6±0.2 12.0±0.1 4.0±0.1 0.85±0.1 255
SR73
(Notes) Dotted lines are applicable to only "TP" and "TB."
(TP)
Carrier Tape
T1
P1
B
A
1.5 +0.1
-0
P12.0 4.0±0.1 Direction of feed
1.75±0.1
W
T1T1
KOA SPEER ELECTRONICS, INC.
SS-239 R6
Bolivar Drive
P.O. Box 547
Bradford, PA 16701
USA
814-362-5536
Fax 814-362-8883
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.
PAGE 8 OF 8
11-5 Dimensions of Reel
Size øa max.
Code 7" 10" øb wtøc ød e
1 H (0201)
1 E (0402) 3.150 0.394 1.063 .118
1 J (0603) (80 ± 2.0) (10 ± 1.0) (27 ± 2.0) (3.0 ± 0.5)
2 A (0805) 7.008 10.039 .059 0.512
2 B (1206) (178) (255) (1.5 ± 0.05) (13 ± 0.5)
2 E (1210) 2.362 0.551 .827 .079
2 H (2010) (60 ± 2.0) (14 ± 1.0) (21 ± 2.0) (2.0 ± 0.5)
3 A (2512)
Dimensions in inches (mm)
Quantity per reel or reel size are requested to designate at the time of ordering.
Contents on label:
(1) Article number (SR73K2ATD J) (4) Customer’s code number (subject to change)
(2) Quantity (5) Production lot number
(3) Nominal Resistance and the (6) Manufacturer’s name
chip marking [Ex: 0.2 Ω (R20)]
w
t
øa
øb
øc ød
e
10. Packing
89 12 3001
Production Date Additional
year, month day number
41~52 January 2006 ~ December 2006
53~64 January 2007 ~ December 2007
Lot number (8 digits)
11. Packaging Method
Size TE 7" Embossed TP 7" Punched TD Punched TED 10" Embossed TDD 10" Punched
Code Plastic Paper Paper Plastic Paper
1 E (0402) ––––– 10,000 ––––– ––––– –––––
1 J (0603) ––––– 10,000 5,000 ––––– 10,000
2 A (0805) 4,000 10,000 5,000 10,000 10,000
2 B (1206) 4,000 ––––– 5,000 10,000 10,000
2 E (1210) 4,000 ––––– 5,000 10,000 10,000
2 H (2010) 4,000 ––––– ––––– 10,000 –––––
3 A (2512) 4,000 ––––– ––––– 10,000 –––––