Wire wound fuse resistance FKNP series current protector Thermal
Fuse Resistor
FEATURES
Function as a resistor in normal condition.
Quick fusing protects circuit from excessive overload.
Low resistance value.
Flame retardant coating.
RoHS compliant / lead-free available.
MAIN SPECIFICATION
Type
| WORKING | MAX OVERLOAD | RatedPowerat70℃ | RESISTANCE VALUE RANGE |
| FKNP 1/2W | 8V | 20V | 1/2W | 0.1Ω－60Ω |
| FKNP 1W / 1WS | 15V | 38V | 1W | 0.1Ω－100Ω |
| FKNP 2W / 2WS | 20V | 50V | 2W | 0.1Ω－100Ω |
| FKNP 3W / 3WS | 25V | 60V | 3W | 0.1Ω－150Ω |
| FKNP 5WS | 30V | 75V | 5W | 0.1Ω－150Ω |
Power rating is defined as maximum power rating continuously
applied under ambient temperature at 70℃.when the ambient
temperature exceeds 70℃.
Fusing characteristics
Shall comply with the following provisions under the condition of
overload fuse time at rated current rate specified (0.25W R<1
rated current ratio for 30 times. The R more than 1 ohm rated
current ratio for 36 times. The fuse time less than 60 seconds.
0.5-3W R<1 rated current ratio for 30 times. The R more than 1
ohm rated current ratio for 36 times. The fuse time less than 60
seconds. 1WS-3WS R<1 rated current ratio for 30 times. The R
more than 1 ohm rated current ratio for 36 times. The fuse time
less than 60 seconds. Note: the fusing characteristics can be made
according to the requirements of the customer and the product which
is required to be struck by lightning does not examine the time of
fusing or according to the requirements of the customer.
PERFORMANCE
ITEM |
PERFORMANCE AND QUALIITY ACCEPTANCE
|
TEST METHOD
|
Resistance to temperature
coefficient
|
1. Rx ＜ 100KΩ
PPM/℃ ＜ +350~500 PPM/℃
2. 100KΩ＞ Rx ＜1MΩ
PPM/℃ ＜ 0 ~ -700PPM/℃
Rx ＞1MΩ
PPM/℃ ＜ 0 ~ -1500PPM/℃
|
R – RO 106
  PPM/℃ = *
RO T- T0
R = Measured resistance(Ω)at T
T ℃
Ro = Measured resistance (Ω)at To
To ℃
T = Measured test temperature(℃)
To = Measured base temperature( ℃)
|
Short time overload
|
≤ ±(2%R + 0.05ohm)
Shall be no mechanical breakage
|
AC or DC voltage 2.5times the rated
Voltage for 5 seconds .
|
Voltage endurance
|
No breakdown or flashover
|
Lay the resistor on the 90° angle metal “V” peak is 1.42 times as
much as insulate voltage .
|
Terminal strength
|
Shall be no mechanical breakage
|
Pull test apply 3.5KG force to the lead in the direction of lead
axis for 30±5 seconds.
|
Heat resistively
against soldering
|
≤ ± (2%R + 0.05ohm)
Shall be no mechanical breakage
|
Dip the lead in to a solder bath having a temperature of 350℃ ± 10℃
up to 3±0.05mm from the body of the resistor and hold it for
3.5±0.5seconds leave the resistor ,at room temperature 1 hours
after ,then Measure.
|
Load life test
|
≤ ±(5%R + 0.05ohm)
Shall be no mechanical breakage
|
In the constant temperature chamber 70℃ ,apply rated voltage for 1
hour and shut voltage for 0.5 hour and repeat this cycle for 1000
hours,
|
Solder ability
|
≥95%
|
Dip the lead in to a solder bath having a temperature of 260℃±5℃.
Time:5± 0.5seconds.
|
Humidity load test
|
≤± (5% R+ 0.1ohm)
Shall be no mechanical breakage
|
In temperature chamber 40℃±2℃,relative humidity 90 – 95%,Apply
rated voltage 1.5hour and shut voltage 0.5 hour repeat this cycle
for 1000 hours, leave in room temperature for 1 hour after test,
|
Vibration
|
Shall be no mechanical breakage
|
set a resistor at the vibration table and vibrate 10HZ—55HZ 10HZ/s.
with 1.5mm amplitude in 1 min. when the change of frequency shall
be completed uniformly. the vibration shall apply to 3
directions,vertical and horizontal to the axis of resistor each for
3h.
|
Endurance at upper-limit temperature
|
≤±(5%R+0.1Ω)
|
At 125 ℃ temperature, duration of 1000h
|
Dimension
| TYPE | L | D | H | d | PULLING(Kg) |
| 1/6W 1/8W 1/4WS | 3.2±0.3 | 1.8±0.3 | 28±2.0 | 0.40±0.05 | 2.5Kg-30S |
| 1/4W / 1/2WS | 6.0±0.5 | 2.3±0.3s | 27±2.0 | 0.43±0.05 | 2.5Kg-30S |
| 1/2W / 1WS | 9.0±1.0 | 3.5±0.5 | 26±2.0 | 0.50±0.05 | 2.5Kg-30S |
| 1W / 2WS | 11.0±1.0 | 4.5±0.5 | 30±2.0 | 0.60±0.05 | 3Kg-30S |
| 2W / 3WS | 15.0±1.0 | 5.0±0.5 | 32±2.0 | 0.65±0.05 | 5Kg-30S |
| 3W /5WS | 17.0±1.0 | 6.0±0.5 | 31.5±2.0 | 0.70±0.05 | 5Kg-30S |
| 5W | 24.0±1.0 | 8.0±1.0 | 28±2.0 | 0.75±0.05 | 5Kg-30S |
FAQ
Q: Can I have a sample order?
A: Yes, we welcome sample order to test and check quality. Mixed
samples are acceptable.
Q: Can we have our logo or company name to be printed on your
products or the package?
A: Yes, for container order, we have OEM packing service, you need
to inform us your logo or
company information in details. For bulk cargo, we will use neutral
packing.
Q: What adventages do you have?
A: Fast delivery and good service.
Stable quality with competitive price.
Strict management system.
Please tell me:
What product specifications do you need? when you ask for a
quotation.I will give you the most
competitive price per as your requirements. And we have many types
for you to choose.
P.S.:If you can't find any products to meet your requirements.
welcome to send us the details
drawings so that we can provide us our professional & best service
to you.
