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

*RoHS ^COMPLIANT
LEAD ^FREE
Features
n Fuses at 120 V or 240 V
n E24 resistance values
n RoHS compliant*
n UL 1412 recognized
n Coating material meets UL 94V-0
requirements
Applications
n White goods
n Inverters
n Lighting
n Metering
FWxxA Series Fusible Power Resistors
General Introduction
v^To^h_El^eta_le^Fg_c^We_tro^x_i^xr_c^A_aci_lr^Sc_C^eu_h^ritⁱ_a^em_r^s_aa^o_cl^f_tfu_e^an_r^x_ic_s^iat_ti^lo_ic^ln^e_ss^a.^dT^eh^de^wrⁱe^resi^wst^o_Lo_VER^u_EAr_oRⁿDHSw_SFI^d_ORCiNEOl^rSEl_M^eAf_PRu^sLEI^iAs^sNe^Tt*ou^rspo^isn
designed to
application
fuse under abnormal conditions such as sudden
of 120 or 240 voltages.
Agency Recognition
surges
in
Characteristic
Power
Resistance Range
UL 1412 Recognized 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.)
5.0
(.197)
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
(1.00.30 0± 0±.5.002)
(0.39 ± 0.02)
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 da⁶t³a^.0sh^±e²e^.0t can and do vary in different applica⁶t^.i⁰on^±s^1.a⁰nd actual device
performance may vary over time.
(2.5 ± 0.08)
(0.24 ± 0.04)
Users should verify actual device performance in th₇e₅ir_.0s_±pe₂c_.0ific applications.
(2.95 ± 0.08)
UL 1412
Description
File Number: E349323
Materials
Resistor................ Wire wound around a

ceramic core
Lead Wire.........................Tinned copper
Housing........................... Insulated resin
Coating Material............Meets UL 94V-0

requirements
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)
Resistance
Code
4.7
4R70
5.1
5R10
5.6
5R60
6.2
6R20
6.8
6R80
Resistance
Value
(Ohms)
Resistance
Code
7.5
7R50
8.2
8R20
9.1
9R10
10.0 10R0