Features

Applications

PWR4522 Fusible Power Resistors

*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.

Specifications are subject to change without notice.

The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.

Users should verify actual device performance in their specific 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 Coefficient

±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 flameproof 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 flame 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 ............ Flameproof thermocoat

0

0

50

100

150

200

250

300

350

20

40

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 flames 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 significant, fourth digit represents number of zeros to follow

Resistance Tolerance

J = ±5 %

Packaging

A = Ammo Pack (750 pcs. per pack)

For Standard Values Used in Capacitors, Inductors, and Resistors, click here.

Agency Approval

Description

UL

File Number: E349323

UL Approved at 120 Vac