Datasheet
Anti Surge Wire Wound Fixed Resistors
Structure
Derating Curve
Type
Max Working
Voltage
Max overload
voltage
Dielectric
Withstanding
Voltage
Operating
Temperatur
e Range
Low Maximum Medium Maximum High Maximum
Resistance Surge Resistance Surge Resistance Surge
D (Max) L (Max) d ± 0.05 H ± 3.0 Range Voltage Range Voltage Range Voltage
KNPA 1/2W 3.5 10 0.54 28 10Ω ~ 40Ω 2KV 43Ω ~ 240Ω 3kV 270Ω ~ 560Ω 4kV
KNPA 1W 5 12 0.7 28 10Ω ~ 50Ω 3KV 51Ω ~ 240 Ω 4kV 270Ω ~ 1kΩ 5kV
KNPA 2W 5.5 16 0.7 28 10Ω ~ 100Ω 4KV 110Ω ~ 240Ω 5kV 270Ω ~ 2kΩ 6kV
KNPA 3W 6.5 17.5 0.75 28 10Ω ~ 100Ω 6KV 110Ω ~ 680Ω 7kV 750Ω ~ 3kΩ 8kV
KNPA 5W 8.5 25 0.75 38 10Ω ~ 160Ω 7KV 180Ω ~ 680Ω 8kV 750Ω ~ 5kΩ 9kV
KNPA 7W 8.5 30 0.75 38 10Ω ~ 160Ω 8KV 180Ω ~ 680Ω 9kV 750Ω ~ 6kΩ 10kV
KNPA 8W 8.5 40 0.75 38 10Ω ~ 160Ω 9KV 180Ω ~ 680Ω 10kV 750Ω ~ 10kΩ 10kV
KNPA 9W 8.5 53 0.75 38 10Ω ~ 160Ω 10KV 180Ω ~ 680Ω 10kV 750Ω
~ 15kΩ 10kV
KNPA 1W 3.5 10 0.54 28 10Ω ~ 40Ω 2KV 43Ω ~ 240Ω 3kV 270Ω ~ 560Ω 4kV
KNPA 2W 5 12 0.7 28 10Ω ~ 50Ω 3KV 51Ω ~ 240 Ω 4kV 270Ω ~ 1kΩ 5kV
KNPA 3W 5.5 16 0.7 28 10Ω ~ 100Ω 4KV 110Ω ~ 240Ω 5kV 270Ω ~ 2kΩ 6kV
KNPA 5W 6.5 17.5 0.75 28 10Ω ~ 100Ω 6KV 110Ω ~ 680Ω 7kV 750Ω ~ 3kΩ 8kV
KNPA 7W 8.5 25 0.75 38 10Ω ~ 160Ω 7KV 180Ω ~ 680Ω 8kV 750Ω ~ 5kΩ 9kV
KNPA 8W 8.5 30 0.75 38 10Ω ~ 160Ω 8KV 180Ω ~ 680Ω 9kV 750Ω ~ 6kΩ 10kV
KNPA 9W 8.5 40 0.75 38 10Ω ~ 160Ω 9KV 180Ω ~ 680Ω 10kV 750Ω ~ 10kΩ 10kV
KNPA 10W 8.5 53 0.75 38 10Ω ~ 160Ω 10KV 180Ω ~ 680
Ω 10kV 750Ω ~ 15kΩ 10kV
Surge Waveform (1.2/50µs)
Characteristic
∆R/R ≤ ±(2.0%+0.05Ω)
Min. 95% coverage
Test Item Standard
ROYAL ELECTRONIC FACTORY (THAILAND) CO.,LTD.
500V 1,000V 500V
-55℃ ~
+155℃
KNPA
Series
Temperature cycling
Dielectric
withstanding
volta
g
e
Standard
<20Ω: ±400 PPM/Ԩ;
≥20Ω: ±300PPM/Ԩ
Type
Dimension (mm)
Normal Size
Small Size
∆R/R ≤ ±(1.0%+0.05Ω)
∆R/R ≤ ±(2.0%+0.05Ω)
Non-Flame No evidence of flaming or arcing
Pulse overload ∆R/R ≤ ±(5.0%+0.05Ω)
No evidence of flashover,
mechanical damage ,arcing or
insulation breakdown
Test Item
Short time overload
Solder ability
sistance to solderin
g
h
e
Temperature
coefficient
Surge Immunity
(IEC61000-4-5)
∆R/R ≤ ±(5.0%+0.05Ω)
Load Life in humidity ∆R/R ≤ ±(5.0%+0.05Ω)
Terminal strength ∆R/R ≤ ±(1.0%+0.05Ω)
Load Life ∆R/R ≤ ±(5.0%+0.05Ω)