24 KOA Speer Electronics, Inc. • Bolivar Driv e • 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.
SR73
lo-ohm 1%, 2%, 5% tolerance thick film
current sense resistor
features
•RuO2thick film resistor element
•Anti-leaching nickel barr ier ter minations
•90/10 solder plated ter minations, standard
•Lead-free ter minations available
•Meets or exceeds EIA 575, EIA PDP-100, MIL-R-55342F
•Marking: Three or four digits on indigo protective coat,
1E size: no marking
ordering information
SR73
F: ±1%
G:±2%
J: ±5%
L: SnPb
T: Sn
±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 mΩwith “L” as decimal
Example: 20mΩ, 1% = 20L0
1E
1J
2A
2B
2E
2H
3A
TP:
2mm pitch punched paper
(0402 & 0603 only)
TD: 7" paper tape
TDD: 10" paper tape
TE: 7" embossed plastic
TED: 10" embossed plastic
H
SR73
Type Tempco Size Nominal
Resistance Tolerance
Termination
Material Packaging
Old Part #
New Part #
2B
2B
T
TD
1R00
1R00
F
FL
dimensions and construction
Protective
Coating Inner
Electrode
Resistive
Film
Ceramic
Substrate
Solder
Plating
Ni
Plating
Lcc
W
t
d
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
.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)
.063±.008
(1.6±0.2)
.102±.008
(2.6±0.2)
.098±.008
(2.5±0.2)
.122±.008
(3.1±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)
.248±.008
(6.3±0.2)
1E
(0402)
1J
(0603)
2A
(0805)
2B
(1206)
2H
(2010)
3A
(2512)
(Inch Size Code) Wcd t
Dimensions inches (mm)
2E
(1210)
For further information
on packaging, please refer
to Appendix A.
current
sense
resistors
1218 Reader's Spreads 6/19/02 1:51 PM Page 23
25
KOA Speer Electronics, Inc. • Bolivar Driv e • 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.
SR73
lo-ohm 1%, 2%, 5% tolerance thick film
current sense resistor
* Parenthesis indicate EIA package size codes. ** See Appendix D for available decade values. *** 1E (F: ±1%) E-24 values only.
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
applications and ratings
SR731E
(0402)
SR731J
(0603)
0.51Ω- 10Ω***
0.2Ω- 0.47Ω***
0.1Ω- 0.18Ω***
0.51Ω- 10Ω
0.2Ω- 0.47Ω
0.1Ω- 0.18Ω
0.2Ω- 1.0Ω
0.1Ω- 0.196Ω0.1Ω- 0.18Ω
0.2Ω- 1.0Ω0.2Ω- 1.0Ω
0.51Ω- 10Ω
0.2Ω- 0.47Ω0.79V 1.98V
0.32V 0.79V
0.1Ω- 0.18Ω
±200
±300
0.063W
0.1W
SR732A
(0805) 1.11V 2.79V0.125W
±500
±200
±250
Resistance Range**T.C.R.
(ppm/°C)
Max.
-55°C
to
+155°C
0.1Ω- 10Ω—
±100 —
— 0.1Ω- 10Ω±200 0.1Ω- 10Ω
——±500 0.051Ω- 0.091Ω
——±800 0.030Ω- 0.047Ω
SR732B
(1206) 1.58V 3.95V0.25W 0.1Ω- 10Ω—±100 —
— 0.1Ω- 10Ω±200 0.1Ω- 10Ω
——±500 0.056Ω- 0.091Ω
——±800 0.030Ω- 0.051Ω
SR732H
(2010) 2.73V 6.84V0.75W 0.1Ω- 10Ω—±100 —
— 0.1Ω- 10Ω±200 0.1Ω- 10Ω
——±500 0.056Ω- 0.091Ω
——±800 0.033Ω- 0.051Ω
SR733A
(2512) 3.16V 7.90V1.0W 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 5.59V0.5W 0.1Ω- 10Ω—±100 —
— 0.1Ω- 9.1Ω±200 0.047Ω- 10Ω
——±500 0.036Ω- 0.043Ω
——±1000 0.024Ω- 0.033Ω
* RCWV = Rated Continuous Working Voltage.
Derating Curve
Performance Characteristics
Surface T emperature Rise
environmental applications
% Rated Power
100
80
60
40
20
-60 -40 0 40 60 80 100 160
70
20
Ambient Temperature
(°C)
0
-55 120 155
-20 140
Temperature Rise
(°C)
125
100
75
50
25
25 50 75 100
% Rated Power
2B
3A
2H
2E
2A
1J
1E
0
0
Parameter
Thermal Shock MIL-STD-202, Method 107, -55°C to +125°C, 100 cycles
±1.0%
Low Temperature Operation MIL-R-55342 π4.7.4, 1 hour @ -55°C followed by 45 minutes of RCWV*
±1.0%
High Temperature Exposure MIL-R-55342 π4.7.6, 100 hours @ 125°C
±1.0%
Short Time Overload MIL-R-55342 π4.7.5, 2.5 x RCWV for 5 seconds
±2.0%
Resistance to Solder Heat MIL-R-55342 π4.7.7, 260°C for 10 seconds
±1.0%
Ter minal Strength-Bend 2mm min. deflection in either direction for 10 seconds
±1.0%
Moisture Resistance MIL-STD-202, Method 103, 40°C, 90 - 95% RH, 1000 hours
±2.0%
Life
Dielectric Withstanding Voltage
1E, 1J, 2A, 2B, 2E, 2H, 3A
Pulse Limitation Curves are available at www.koaspeer.com MIL-STD-202, Method 108, 70°C,
1000 hours @ RCWV, 1.5 hr ON, 0.5 hr OFF
MIL-STD-202, Method 301
±2.0%
100V, 100V, 400V, 400V, 400V, 400V, 400V
Insulation Resistance 10,000 MΩMinimum
Maximum ∆R Test Method
0.1Ω- 0.18Ω
—
current
sense
resistors
PMS 300 neg. Black neg.
1218 Reader's Spreads 6/19/02 1:51 PM Page 24
