RK73N
resistors
trimmable chip resistor
features
•
•
•
•
•
•
•
Same quality thick film construction as type RM
Glass passivated, supplied without protective coat
Anti-leaching nickel barrier terminations
Trimmable in circuit 2x original value
Replaces trimmer in critical circuit adjustments
Marking: Black body with no marking
Products with lead-free terminations meet
RoHS requirements. Pb located in glass material,
electrode and resistor element is exempt per Annex 1,
exemption 5 of EU directive 2005/95/EC
dimensions and construction
c
L
c
Type
(Inch Size Code)
L
.039
+.004
-.002
+0.1
)
(1.0
-0.05
Dimensions
inches
(mm)
W
c
d
.02±.002 .008±.004
(0.5±0.05) (0.2±0.1)
.01
+.002
-.004
(0.25
+0.05
)
-0.1
t
.013±.002
(0.33±0.05)
W
Solder
Plating
Ni
Plating
1E
(0402)
1J
(0603)
2A
(0805)
2B
(1206)
2E
(1210)
2H
(2010)
3A
(2512)
t
d
Protective
Coating
Resistive Inner
Film
Electrode
.063±.008 .031±.004 .012±.004 .012±.004 .018±.004
(1.6±0.2)
(0.8±0.1)
(0.3±0.1) (0.45±0.1)
(0.3±0.1)
.079±.008 .049±.004 .016±.008
(2.0±0.2) (1.25±0.1) (0.4±0.2)
.063±.008
.126±.008
(1.6±0.2)
(3.2±0.2)
.102±.008
(2.6±0.2)
.197±.008 .098±.008
(5.0±0.2)
(2.5±0.2)
.248±.008 .122±.008
(6.3±0.2)
(3.1±0.2)
.012
(0.3
.016
(0.4
.02±.012
(0.5±0.3)
+.008
-.004
+0.2
)
-0.1
+.008
-.004
+0.2
-0.1
)
.02±.004
(0.5±0.1)
Ceramic
Substrate
.024±.004
(0.6±0.1)
.025±.005
(0.65±0.15)
ordering information
New Part #
RK73N
Type
2B
Size
1E
1J
2A
2B
2E
2H
3A
T
Termination
Material
T: Sn
L: SnPb
(Other termination
styles may be
available, please
contact factory
for options)
TD
Packaging
TP: 2mm pitch punched paper
(0402, 0603 & 0805)
TD: 7" paper tape
(0603, 0805, 1206 &1210)
TDD: 10" paper tape
(0603, 0805, 1206 &1210)
TE: 7" punched plastic
(0805, 1206, 1210,
2010 & 2512)
TED: 10" punched plastic
(0805, 1206, 1210,
2010 & 2512)
102
Nominal
Resistance
2 significant
figures + 1
multiplier
W
Tolerance
N: 0 ~ -20%
P: 0 ~ -30%
W: ±10%
M: ±20%
For further information
on packaging, please refer
to Appendix A.
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
1/26/07
18
KOA Speer Electronics, Inc.
• Bolivar Drive • P Box 547 • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
.O.
RK73N
trimmable chip resistor
applications and ratings
Part
Designation*
RK73N1E
(0402)
RK73N1J
(0603)
RK73N2A
(0805)
RK73N2B
(1206)
RK73N2E
(1210)
RK73N2H
(2010)
RK73N3A
(2512)
Power
Rating
@ 70°C
1/16W (.063W)
50V
1/10W (.10W)
1/8W (.125W)
1/4W (.25W)
1/3W (.33W)
3/4W (.75W)
1W
±200
10Ω - 1MΩ
N: 0 ~ -20%
P: 0 ~ -30%
W: ±10%
M: ±20%
100V
200V
-55°C to +125°C
100V
T.C.R.
(ppm/°C)
Max.
Resistance
Range
E-12**
Resistance
Tolerance
Absolute
Maximum
Working
Voltage
Absolute
Maximum
Overload
Voltage
Operating
Temperature
Range
resistors
200V
400V
* Parenthesis indicate EIA package size codes.
** See Appendix D for available decade values.
environmental applications
Derating Curve
100
Resistance Rising Rate
Initial resistance increase of magnification
Single cut
Δ
R/R Magnification
80
2
% Rated Power
L cut
Double
reverse cut
Double cut
60
40
20
0
-60 -40
-55
1.5
W
1
-20
0
20
40
60
80
100 120
140
125
W
1
0
0.5
1
70
Ambient Temperature
(°C)
W
1
/ W (W
1
= Total Trimmed Length)
For complete environmental specifications,
please refer to pages 30-31.
The Trimmable chip resistor is suitable for the circuit demanding high
stability as a replacement of variable resistors for adjusting circuit.
Please note that customers need laser trimming equipment.
Trimming by laser increases the initial resistance. Amount of resistance
increase is dependent on the laser cut configuration as shown.
W
1
must not exceed 1/2W to ensure power rating of the unit.
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
1/26/07
KOA Speer Electronics, Inc.
• Bolivar Drive • P Box 547 • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
.O.
19
