Datasheet

Features
■ Fuses at 120 V or 240 V
■ E24 resistance values
■ RoHS compliant*
■ UL Listed
Applications
■ White goods
■ Inverters
■ Lighting
■ Metering
FWxxA Series 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.
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 specifi c applications.
DIMENSIONS:
MM
(INCHES)
Electrical Characteristics
Characteristic FW Series
Power 1, 2, 3, 5, 7** W
Resistance Range 4.7 ohms to 100 ohms (E24 values)
UL Listed Resistance Range 4.7 ohms to 47 ohms
Tolerance 5 %
Temperature Coeffi cient ±200 PPM/°C
Operating Temperature Range -55 °C to +155 °C
Maximum Voltage √P*R
Fusing Point See Fusing Performance Chart
Fusing Time See Fusing Performance Chart
Product Dimensions
General Introduction
The FWxxA Series of axial leaded wirewound resistors is designed to fuse under abnormal conditions such as sudden surges in
voltage or circuit malfunctions. The resistor will fuse upon application of 120 or 240 voltages.
The resistor will fuse safely if 120 or 240 V is applied. The time to fuse depends on the
resistance value.
** 7 W = 240 Vac only.
Materials
Resistor ............... Wire wound around a
ceramic core
Lead Wire ........................Tinned copper
Housing .......................... Insulated resin
*RoHS COMPLIANT
Agency Listing
Description
UL File Number: E349323
HL
D
d
(DIA.)
H
Model
Dimensions
D
(Max.)
L
(Max.)
Hd
FW10A (1 W)
5.5
(.217)
12
(.472)
28 ± 3.0
(1.102 ± .118)
0.55 ± 0.05
(.022 ± .002)
FW20A (2 W)
6.0
(.236)
12
(.472)
28 ± 3.0
(1.102 ± .118)
0.65 ± 0.05
(.026 ± .002)
FW30A (3 W)
6.5
(.256)
16
(.630)
28 ± 3.0
(1.102 ± .118)
0.75 ± 0.05
(.030 ± .002)
FW50A (5 W)
7.5
(.295)
18
(.709)
28 ± 3.0
(1.102 ± .118)
0.75 ± 0.05
(.030 ± .002)
FW70A (7 W)
9.5
(.374)
26
(1.024)
38 ± 3.0
(1.496 ± .118)
0.75 ± 0.05
(.030 ± .002)
How to Order
FW 10 A 7R50 J A
Model
FW = Fusible
Wirewound
Rated Power
10 = 1.0 Watts
20 = 2.0 Watts
30 = 3.0 Watts
50 = 5.0 Watts
70 = 7.0 Watts
Pin Style
A = Axial
Resistance Code
• R<100 ohms:
“R” represents decimal point
(examples: 7R50 = 7.5 ohms)
• R≥100 ohms:
First three digits are signifi cant,
fourth digit represents number of
zeros to follow
(example: 1000 = 100 ohms)
Resistance Tolerance
J = ±5 %
Packaging
A = Ammo Pack
• 1,000 pcs./box: FW10, FW20, FW30
• 500 pcs./box: FW50, FW70
Resistance Value
(Ohms)
Resistance
Code
4.7 4R70
5.1 5R10
5.6 5R60
6.2 6R20
6.8 6R80
7.5 7R50
8.2 8R20
9.1 9R10
10 10R0
Popular Values