Datasheet

Features
■ D
2
PAK housing
■ Low inductance
■ Resistor electrically isolated from the
backplate
■ High power rating
■ Compatible with lead free solder refl ow
temperatures
■ RoHS compliant*
Applications
■ Power supplies
■ Motor drives
■ Test and measurement
■ Rectifi ers
Electrical & Thermal Characteristics
PWR263S-35 Series Power Resistor
*RoHS Directive 2002/95/EC Jan 27, 2003 including Annex.
Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications.
General Information
Bourns
®
PWR263S-35 Series is a TO263 DPAK style power resistor. Manufactured using thick fi lm on alumina ceramic technology, it
is used in current measurement, snubber, bleeder and discharge circuits.
Parameter Value(s)
Resistance
(See table of standard values)
0.02 Ω to 130 KΩ
Power Rating @ 25 ˚C Case Temperature
35 W
Tolerance
±1 %**, ±5 %
TCR
0.02 Ω<R<130.0K Ω ±100 PPM/˚C
Thermal Resistance - R
thj
3.7 ˚C/W
Inductance 0.1 µH maximum
Operating Voltage
√P*R with a maximum of 250 V
Dielectric Strength 2 KV AC
Insulation Resistance
10 GΩ
Operating Temperature -55 ˚C to 155 ˚C
Material Characteristics
Resistor .................................. Thick fi lm
Substrate ......................Alumina (AL203)
Housing ........................................Epoxy
Pins ....................Tinned Copper (Sn/Cu)
Flammability ........Conforms to UL-94V0
Derating Curve
Reliability Characteristics
Parameter Specifi cation
Short Term Overload (2x Pr for R < 2 Ω,
1.6 x Pr for R ≥ 2 Ω, V < 1.5 x Operating Voltage)
ΔR ±0.25 %
Load Life (1000 hours at rated power)
ΔR ±1.0 %
Thermal Shock (-55 ˚C to 155 ˚C, 5 cycles)
ΔR ±0.5 %
Resistance to Soldering Heat (10 seconds at 270 ˚C)
ΔR ±0.5 %
Vibration (20 G 10-2000 Hz .06 ” D.A.)
ΔR ±0.25 %
Moisture Sensitivity Level 1
Power Ratio (%)
Temperature of Backplate (°C)
100
120
80
60
40
20
0
25 50 11510085 130 145 155
Typical Part Marking
Standard Resistance Values
Code
Resistance
Value Code
Resistance
Value
R020 0.02*** 20R0 20
R050 0.05*** 30R0 30
R100 0.1 33R0 33
R500 0.5 47R0 47
R750 0.75 50R0 50
1R00 1 56R0 56
1R50 1.5 75R0 75
2R00 2 1000 100
2R20 2.2 2000 200
2R50 2.5 3300 330
3R00 3 4700 470
3R30 3.3 7500 7500
4R70 4.7 1001 1000
5R00 5 3301 3300
7R50 7.5 1002 10000
8R20 8.2 3002 33000
10R0 10 1003 100000
15R0 15 1303 130000
** Available for most values. Check Standard Resistance Values table.
*** 5 % Tolerance
263 35
XXXX X%
YYY
COSTA RICA
MODEL
NUMBER
TOLERANCE
DATE CODE
COUNTRY
OF ORIGIN
RESISTANCE
CODE
MANUFACTURER'S
TRADEMARK
*RoHS COMPLIANT