Features
■ Fuses safely at 220/240 mains voltage
■ Resistance values as high as 2.2K ohms
■ Flame-proof silicone coating
■ Low TCR
■ RoHS compliant*
■ Agency approval:
Applications
■ White goods
■ Inverters
■ Lighting
■ Metering
PWR4522 Fusible Power Resistors
*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications.
Power Derating Curve
DIMENSIONS: MM
(INCHES)
Electrical Characteristics
Model
Characteristic PWR4522
Power 3 W
Resistance Range 8.2 ohms to 2.2K ohms (E12)
Tolerance 5 %
Temperature Coeffi cient ±90 PPM/°C
Operating Temperature Range -55 °C to +350 °C
Maximum Voltage √P*R
Fusing Point 16X Rated Power
Fusing Time 45 Seconds Max.**
Product Dimensions
General Introduction
The PWR4522A Series of axial leaded wirewound resistors in a fl ame-proof silicone coating are designed to fuse under abnormal
conditions such as sudden surges in voltage or circuit malfunctions. The resistor will fuse instantly upon the application of 220/240
mains voltage without fl ame or incandescent particles.
** The resistor will fuse safely if 220/240 mains voltage is applied. The time to fuse depends
on the resistance value.
Materials
Resistor ................ Wirewound around a
ceramic core
Lead Frame .....................Tinned copper
Housing ........... Flame-proof thermocoat
00 50 100 150 200 250 300 350
20
40
Power (%)
Ambient Temperature (°C)
60
80
100
120
11.5
(0.45)
MAX.
38.0 ± 1.5
(1.50 ± 0.06)
5.5
(0.22)
MAX. 0.8 ±0.05
(0.03 ± 0.002)
How to Order
PWR 4522 A S 8R20 J A
Model
PWR = Power Resistor
Package
4522 = Size (0.45 x 0.22 inches)
Pin Style
A = Axial Through-hole
Version
S = Safety Version (Fuses without fl ames or explosion when 220/240 mains voltage is applied)
Resistance Value
R<100 ohms “R” represents decimal point
R≥100 ohms First three digits are signifi cant, fourth digit represents number of zeros to follow
Resistance Tolerance
J = ±5 %
Packaging
A = Ammo Pack (1500 pcs. per pack)
For Standard Values Used in Capacitors, Inductors, and Resistors, click here.
*RoHS COMPLIANT
Agency Approval
Description
UL File Number: E349323
UL Approved at 120 Vac
Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications.
PWR4522 Fusible Power Resistors
REV. 08/12
DIMENSIONS: MM
(INCHES)
Environmental Characteristics
Test Description Specifi cation
Dielectric Withstanding Voltage Based on limiting voltage x 2 for 60 seconds ΔR ± (1 % +0.05 Ω) - No fl ashover, mechani-
cal damage, arcing or insulation breakdown
Thermal Shock
-55 °C +0 °C/-3 °C to room temperature to
+200 °C +3 °C/-0 °C, 5 cycles, with minimum
15 minutes at each cycle
±(2.0 % +0.05 Ω)
Short Time Overload Five times rated power for 5 seconds ±(2.0 % +0.05 Ω)
Solderability As per IEC 60068 – 2 -20 Must meet all requirements
Resistance to Solder Heat Immersion in solder +260 °C to +270 ˚C for 10
±0.5 seconds ±(0.5 % +0.05 Ω)
Dielectric Strength Test voltage >2X maximum voltage for greater
than 1 minute ±(2.0 % +0.05 Ω)
Insulation Resistance Test voltage greater than 500 V rms for one
minute >1000 GΩ
Humidity +40 ˚C at 93 % RH for 1000 hours no load
+5 ˚C ±(5.0 % +0.05 Ω)
Load Life
Rated continuous voltage for 1000 hours
1 hour on and 0.5 hours off at a test
temperature of +70 °C ±2 °C
±(5.0 % +0.05 Ω)
Packaging Specifi cations
63.0 ± 2.0
(2.5 ± 0.08)
10.0 ± 0.5
(0.39 ± 0.02)
75.0 ± 2.0
(2.95 ± 0.08)
6.0 ± 1.0
(0.24 ± 0.04)
Ammo Pack Box Master Box
Quantity
Ammo
Pack
Master
Box
275 x 100 x 110
(10.8 x 3.94 x 4.33)
450 x 290 x 330
(17.72 x 11.42 x 12.99) 1500 12000
Asia-Pacifi c:
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
