FW10A7R50JA Datasheet, PDF (1/4 Pages) Bourns Electronic Solutions – Fusible Power Resistors

*RoHS ^COMPLIANT
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
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.
Electrical Characteristics
Characteristic
Power
Resistance Range
UL Listed Resistance Range
Tolerance
Temperature Coefficient
Operating Temperature Range
Maximum Voltage
Fusing Point
Fusing Time
FW Series
1, 2, 3, 5, 7** W
4.7 ohms to 100 ohms (E24 values)
4.7 ohms to 47 ohms
5%
±200 PPM/°C
-55 °C to +155 °C
√P*R
See Fusing Performance Chart
See Fusing Performance Chart
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.
Product Dimensions
H
L
H
D
DIMENSIONS:
MM
(INCHES)
Model
FW10A (1 W)
FW20A (2 W)
FW30A (3 W)
FW50A (5 W)
FW70A (7 W)
D
(Max.)
5.5
(.217)
6.0
(.236)
6.5
(.256)
7.5
(.295)
9.5
(.374)
L
(Max.)
12
(.472)
12
(.472)
16
(.630)
18
(.709)
26
(1.024)
Dimensions
H
28 ± 3.0
(1.102 ± .118)
28 ± 3.0
(1.102 ± .118)
28 ± 3.0
(1.102 ± .118)
28 ± 3.0
(1.102 ± .118)
38 ± 3.0
(1.496 ± .118)
d
(DIA.)
d
0.55 ± 0.05
(.022 ± .002)
0.65 ± 0.05
(.026 ± .002)
0.75 ± 0.05
(.030 ± .002)
0.75 ± 0.05
(.030 ± .002)
0.75 ± 0.05
(.030 ± .002)
*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.
Agency Listing
Description
UL
File Number: E349323
Materials
Resistor ............... Wire wound around a
ceramic core
Lead Wire ........................Tinned copper
Housing .......................... Insulated resin
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 significant,
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
Popular Values
Resistance Value
(Ohms)
4.7
5.1
5.6
6.2
6.8
7.5
8.2
9.1
10
Resistance
Code
4R70
5R10
5R60
6R20
6R80
7R50
8R20
9R10
10R0