High Precision Carbon Film Fixed Resistor CF Series Environmental
Winding Resistance
FEATURES
STANDARD TOLERANCES: ±2%,±5%(1% IS AVAILABLE ON REQUEST)
ROHS COMPLIANT / LEAD-FREE AVAILABLE.
MAIN SPECIFICATION
Type
| WORKING | MAX OVERLOAD | RatedPowerat70℃ | RESISTANCE VALUE RANGE |
| CF1/16W / 1/8W. | 200V | 400V | 1/6W | 0.1Ω－10MΩ |
| CF1/4W / I/4WS | 250V | 500V | 1/4W | 0.1Ω－10MΩ |
| CF1/2W / 1/2WS | 350V | 700V | 1/2W | 0.1Ω－10MΩ |
| CF1W / 1WS | 500V | 1000V | 1W | 0.1Ω－10MΩ |
| CF2W / 2WS | 600V | 1000V | 2W | 0.1Ω－10MΩ |
| CF3W / 3WS | 700V | 1000V | 3W | 0.1Ω－10MΩ |
| CF5W/ 5WS | 800V | 1000V | 5W | 0.1Ω－10MΩ |
Power rating is defined as maximum power rating continuously
applied under ambient temperature at 70℃.when the ambient
temperature exceeds 70℃.
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
|
≤ ±(1%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
|
≤ ± (1%R + 0.5ohm)
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.
|
ITEM
|
PERFORMANCE AND QUALIITY ACCEPTANCE
|
TEST METHOD
|
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 ±0.02m | 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±0.3 | 27±2.0 | 0.40±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 | 26±2.0 | 0.65±0.05 | 3Kg-30S |
| 2W / 3WS | 15.0±1.0 | 5.0±0.5 | 31.5±2.0 | 0.68±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.
