resistors
SR73-RT
low resistance flat chip resistors
(anti sulfuration)
EU
features
• Excellent anti-sulfuration characteristic due to using
high sulfuration-proof inner top electrode material
• Current detecting resistors for power supply, motor circuits, etc
• High reliability and performance with resistance tolerance
±1.0, T.C.R. ±100×10-6/K
• Suitable for both reflow and flow solderings
• Products with lead free termination meet EU RoHS requirements.
EU RoHS regulation is not intended for Pb-glass contained in
electrode, resistor element and glass.
• AEC-Q200 Tested
Type
(Inch Size Code)
dimensions and construction
1E (0402)
Resistance
Range (Ω)
1 - 10
Dimensions inches (mm)
W
c
d
L
.039
+.004
-.002
+0.1)
(1.0 -0.05
.020
.008±.004
(0.2±0.1)
.063±.008
(1.6±0.2)
.031
+.006
-.004
+0.15
-0.1 )
(0.35 +0.15
-0.1 )
+0.2)
(0.35 -0.1
.014±.004
(0.35±0.1)
.014±.004
(0.35±0.1)
.014
L
c
0.1 - 0.43
c
1J (0603)
0.47 - 10
W
(0.8
+.006
-.004
.049±.004
(1.25±0.1)
.016±.008
(0.4±0.2)
0.47 - 10
Ni
Plating
t
.079±.008
(2.0±0.2)
2A (0805)
.010±.004 .014±.002
(0.25±0.1) (0.35±0.05)
.014
+.008
-.004
+0.2
(0.4 -0.1 )
.012 +.008
-.004
(0.3 +0.2
-0.1 )
.02
d
Protective
Coating
Resistive Inner
Film
Electrode
0.1 - 0.43
2B (1206)
Ceramic
Substrate
.126±.008
(3.2±0.2)
.063±.008
(1.6±0.2)
.02±.012
(0.5±0.3)
.126±.008
(3.2±0.2)
.102±.008
(2.6±0.2)
.02±.012
(0.5±0.3)
0.47 - 10
0.1 - 0.39
2E (1210)
0.43 - 10
Derating Curve
.018±.004
(0.45±0.1)
+.008
-.004
(0.5 +0.2
-0.1 )
+.008
-.004
+0.2
(0.4 -0.1 )
.02 +.008
-.004
(0.5 +0.2
)
-0.1
.016 +.008
-.004
(0.4 +0.2
-0.1 )
.016
.02±.004
(0.5±0.1)
.024±.004
(0.6±0.1)
.024±.004
(0.6±0.1)
SR73 2A (0.5W), SR73 2B (0.5W), SR73 2E (0.66W)
For resistors operated at an ambient temperature of 70°C
or above, a power rating shall be derated in accordance
with the derating curve.
ordering information
SR73
2B
Type
Size
1E: 0.166W
1J: 0.2W
2A: 0.33W, 0.5W
2B: 0.33W, 0.5W
2E: 0.5W, 0.66W
RT
Termination
Material
RT: Sn
Anti-Sulfur
For resistors operated at a terminal part temperature of described for each size or above, a power rating shall be
derated in accordance with the derating curve.
Please refer to “Introduction of the derating curve based on the terminal part temperature” in the beginning of our
catalog before use.
TD
Packaging
TD: 7" 4mm pitch punch paper
TP: 0402 only, 7" 2mm pitch paper
TPL: 0402 only, 2mm pitch paper
For further information on packaging,
please refer to Appendix A
R10
Nominal
Resistance
±2%, ±5%: 2 significant
figures + 1 multiplier “R”
indicates decimal on
values
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