Features
Applications
■ Smart meters
■ Renewable energy
■ Industrial
■ Low thermal resistant ceramic core
■ E24 resistance values
■ RoHS compliant*
■ Wide power range (1~10 W)
■ Coating material meets UL 94V-0
requirements
■ Power supplies/chargers
■ Lighting
■ Instruments/gauges
■ White goods
W Series Wirewound Power Resistor
Electrical Characteristics
How to Order
Resistance Range................................................ See Popular Resistance Values Table
Tolerance....................................................................................................................5 %
Operating Temperature.........................................................................-55 °C to +200 °C
Temperature Coefficient ..............................................................................±±00 ppmꢀ°C
Maximum Voltage....................................................................................................√P*R
W 3 M 22R0 J
Product Series
W = Wirewound
Power Rating
ꢂ = ꢂ Watt
2 = 2 Watts
± = ± Watts
5 = 5 Watts
7 = 7 Watts
9 = 9 Watts
ꢂ0 = ꢂ0 Watts
Non-inductive version is available upon request.
Popular Resistance Values
Pin Style
Code
ꢂ5R0
22R0
±±R0
±9R0
47R0
R Value
ꢂ5 Ω
22 Ω
±± Ω
±9 Ω
47 Ω
Code
56R0
82R0
ꢂ000
ꢂ200
ꢂ500
R Value
56 Ω
82 Ω
ꢂ00 Ω
ꢂ20 Ω
ꢂ50 Ω
M = Axial Miniaturized Version
Resistance Code
• R<ꢂ00 ohms:
“R” represents decimal point
ꢁexamples: 56R0 = 56 ohms)
• R≥ꢂ00 ohms:
First three digits are significantꢃ
fourth digit represents number of
zeros to follow
Other E24 resistance values available upon request.
ꢁexample: ꢂ500 = ꢂ50 ohms)
Resistance Tolerance
J = ±5 %
Physical Characteristics
Resistor .................................................................... Low thermal resistant ceramic core
Lead Wire......................................................................................Tin-plated copper wire
Coating Material ............................................................... Meets UL 94V-0 requirements
Packaging Specifications
Min.
Qty. per
Box
Order
Quantity
(Pcs.)
Style
Model
Environmental Characteristics
(Pcs.)
Test
Conditions
Specification
WꢂM
W2M
W±M
W5M
W7M
W9M
Wꢂ0M
Ammo
Pack
2.5 times rated voltage
ꢂꢃ000
5ꢃ000
Short Time Overload
Solderability
ΔRꢀR≤±ꢁ2 % ± 0.05 Ω)
for 5 seconds.
245 ±± °C for 2.5 ±0.5 seconds.
260 ±5 °C for ꢂ0 ± ꢂ seconds.
Over 95 % coverage
Ammo
Pack
Resistance to
500
2ꢃ000
2ꢃ000
ΔRꢀR≤±ꢁꢂ % + 0.05 Ω)
Solder Heat
Test voltage >500 Vrms for
>ꢂ minute.
Bulk in
Box
Dielectric Strength
Pass
25 ꢀ 200
Test voltage >500 Vrms for
Insulation Resistance
>ꢂ09 Ω
ꢂ minute.
40 ±2 °Cꢃ 90 to 95 %.
Load Life Humidity
Load Life
ꢂ.5 hours ONꢃ 0.5 hours OFF for
ΔRꢀR≤ ±ꢁ5 % + 0.05 Ω)
ΔRꢀR≤±ꢁ5 % + 0.05 Ω)
ꢂ000 hours at rated power.
70 ±2 °C.
ꢂ.5 hours ONꢃ 0.5 hours OFF for
ꢂ000 hours at rated power.
*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.