Ro VE LEA
HS RS D
C ION FRE
OM S E
PL AR
IA E
NT
*
Features
n
D
2
PAK housing
n
Low inductance
n
Resistor electrically isolated from the
n
RoHS compliant*
backplate
n
High power rating
n
Compatible with lead free solder reflow
temperatures
Applications
n
Power supplies
n
Motor drives
n
Test and measurement
n
Rectifiers
General Information
PWR263S-20 Series Power Resistor
Bourns
®
PWR263S-20 Series is a TO263 DPAK style power resistor. Manufactured using thick film on alumina ceramic technology, it
is used in current measurement, snubber, bleeder and discharge circuits.
Electrical & Thermal Characteristics
Parameter
Resistance
(See table of standard values)
Power Rating @ 25 ˚C Case Temperature
Tolerance
TCR
0.02
Ω<R<130.0K Ω
Thermal Resistance - Rthj
Inductance
Operating Voltage
Dielectric Strength
Insulation Resistance
Operating Temperature
Value(s)
0.02
Ω
to 130 KΩ
20 W
±1 %**,
±5 %
Material Characteristics
Resistor .................................. Thick film
Substrate ......................Alumina (AL203)
Housing ........................................Epoxy
Pins....................Tinned Copper (Sn/Cu)
Flammability ........Conforms to UL-94V0
Standard Resistance Values
Code
Resistance
Value
Code
Resistance
Value
±100 PPM/˚C
6.5 ˚C/W
0.1 µH maximum
√P*R
with a maximum of 250 V
2 KV AC
10 GΩ
-55 ˚C to 155 ˚C
R020
R050
R100
R500
R750
1R00
1R50
2R00
2R20
2R50
3R00
3R30
4R70
5R00
7R50
8R20
10R0
15R0
** Available for most values. Check Standard Resistance Values table.
Reliability Characteristics
Parameter
Short Term Overload (2x Pr for R < 2
Ω,
1.6 x Pr for R
≥
2
Ω,
V < 1.5 x Operating Voltage)
Load Life (1000 hours at rated power)
Thermal Shock (-55 ˚C to 155 ˚C, 5 cycles)
Resistance to Soldering Heat (10 seconds at 270 ˚C)
Vibration (20 G 10-2000 Hz .06 ” D.A.)
Moisture Sensitivity Level
Specification
ΔR
ΔR
ΔR
±0.25 %
±1.0 %
±0.5 %
0.02***
0.05***
0.1
0.5
0.75
1
1.5
2
2.2
2.5
3
3.3
4.7
5
7.5
8.2
10
15
20R0
30R0
33R0
47R0
50R0
56R0
75R0
1000
2000
3300
4700
7500
1001
3301
1002
3002
1003
1303
20
30
33
47
50
56
75
100
200
330
470
750
1000
3300
10000
33000
100000
130000
ΔR
±0.5 %
ΔR
±0.25 %
1
*** 5 % Tolerance
Typical Part Marking
RESISTANCE
CODE
MODEL
NUMBER
TOLERANCE
DATE CODE
COUNTRY
OF ORIGIN
Derating Curve
120
100
80
60
40
20
0
25
263 20
XXXX X%
YYY
C OS TA RICA
MANUFACTURER'S
TRADEMARK
Power Ratio (%)
50
85
100
115
130
145
155
Temperature of Backplate (°C)
*RoHS Directive 2002/95/EC Jan 27, 2003 including Annex.
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
PWR263S-20 Series Power Resistor
Product Dimensions
10.1 10.1
(0.398)
(0.398)
7.8 7.8
(0.307)
(0.307)
48 ° 48 °
1.6 1.6
(0.063)
(0.063)
4.5 4.5
(0.177)
(0.177)
Recommended Pad Layout
1.3 1.3
(.051)
(.051)
11.0 11.0
(.433)
(.433)
4.02 4.02
(0.158)
(0.158)
10.52
10.52
(0.414)
(0.414)
2.25 2.25
(0.089)
(0.089)
0.26 0.26
(0.10)
(0.10)
10.4 10.4
(0.409)
(0.409)
REF. REF.
8.8 8.8
(0.347)
(0.347)
15.39
15.39
(0.606)
(0.606)
5.08 5.08
(0.20)
(0.20)
1.4 1.4
(0.055)
(0.055)
1.92 1.92
(0.076)
(0.076)
0.25 0.25
(0.010)
(0.010)
3.1 3.1
(0.122)
(0.122)
4.23 4.23
(0.166)
(0.166)
2.4 2.4
(0.095)
(0.095)
8.0 8.0
(.315)
(.315)
MM
DIMENSIONS:
(INCHES)
±0.38
UNLESS OTHERWISE NOTED
TOLERANCE:
(±0.015)
LEAD
0.102 MAX AT MOUNTING
COPLANARITY: (0.004) SURFACE
Soldering Profile
275
+245 °C and +260 °C
225
220 °C
Temperature (°C)
190 °C
175
150 °C
60 - 90
seconds
Ramp Down
6 °C/second
60 - 120 seconds
10 seconds minimum
75
Ramp Up
3 °C/second maximum
25
<1>
Maximum of 20 seconds between
<1>
245 °C
How to Order
PWR 263 S - 20 - 10R0 F E
260 °C peak
Model
PWR = Power
Resistor
Package
263 = D
2
PAK
Pin Style
S = Surface Mount
Power
20 = 20 W
Resistance Value
<100 ohms ... “R” represents decimal
point (examples: 7R50 =
7.5
Ω;
R500 = 0.5
Ω)
≥100
ohms ... First three digits are
significant, fourth digit
represents number of
zeros to follow (exam-
ples: 2000 = 200 ohms;
3002 = 30K ohms)
Absolute Tolerance
J=5%
F=1%
Packaging
E = Tape & Reel
Blank = Tubes
125
0
50
100
150
Time (seconds)
200
250
300
Power dissipation is 2.8 W at an ambient temperature of 25 ˚C when mounted on a
double-sided copper board using FR4 standard, 70 µm of copper, 39 x 30 x 1.6 mm.
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
PWR263S-20 Series Power Resistor
Pulse Power Rating
100
Energy in Joules
10
1
0.1
0.01
10 -7
10 -6
10 - 5
10 - 4
10 - 3
10 - 2
10 - 1
Overload Duration in Seconds
The energy absorbed by the resistor expressed in Joules can be calculated by multiplying the peak power of the pulse in watts times
the length of the pulse in seconds.
The energy should not exceed the limits shown in the graph. The overload voltage should not exceed 1.5 times the maximum
operating voltage.
Packaging Specifications
5.3
(0.209)
0.38 ± 0.20
(0.015 ± 0.008)
24.0
(0.945)
MM
DIMENSIONS:
(INCHES)
±0.38
UNLESS OTHERWISE NOTED
TOLERANCE:
(±0.015)
0.5 ± 0.18
(0.020 ± 0.007)
Asia-Pacific:
Tel: +886-2 2562-4117 • Fax: +886-2 2562-4116
Europe:
Tel: +41-41 768 5555 • Fax: +41-41 768 5510
The Americas:
Tel: +1-951 781-5500 • Fax: +1-951 781-5700
www.bourns.com
REV. 09/11
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
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