Ohmalloy Material Co.,Ltd
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1/2W/ 1/4W High strength, high voltage and high resistance carbon film resistor
Dimension
| Dimension(mm) | L | ΦD | l | Φd CU |
| Value | 17±1.5 | 6±0.5 | ≥28 | 0.7±0.05 |
Rated Value
| Style | RX21 |
| Rated Power | 5W |
| Derating Curve | |
| Rated Voltage | |
| Maximum Voltage | 500V |
| Maximum Overload Voltage | 700V |
| Tolerance | J(±5%) |
| Resistance Range | 47R |
| Operating Temperature Range | -55℃ ~ +155℃ |
Performance
| Description | Performance Requirements | Test Method | |
| Resistance Temperature Coefficient | T.C.R. ±350ppm/℃ | Test temperature +20℃/-55℃/+20℃/+125℃/+20℃ | |
| Short-time Overload | ΔR≤±1%R No visible damage,Markings legible | 2.5 times rated voltage or maximum overload voltage (the lower) 5 seconds | |
| Wiith Standing Voltage | No flasheover or breakdown | AC 700V 1 minute | |
| Terminal Strength | Pulled | ΔR≤±1%R+0.05R No visible damage | Φd 0.7mm;Load 10N 10s |
| Winded | Φd 0.7mm;Load 10N 900 | ||
| Twisted | 3600 in opposite direction | ||
| Resistance to Vibration | ΔR≤±1%+0.05R No visible damage | 10~500Hz 3 direction 2 hours each | |
| Solder-heat Resistance | ΔR≤±1%R Marks legible, | 350℃ 2mm from the body,3 seconds | |
| Solderability | At least 95% of the dipping surface must be covered by new solder, no flaws gathered. | 235℃ 2mm from the body, 2 seconds | |
| Temperature Cycle | ΔR≤±1%R+0.05R No visible damage | -55/+155℃ for 5 cycles | |
| Humidity | ΔR≤±5%R+0.05R No visible damage | 40℃ 95%RH 1344 hours | |
| Load Life | ΔR≤±5%R+0.05R No visible damage, marks legible | rated voltage or maximum voltage,1.5 hours on, 0.5 hours off, 70 centigrade temperature 1000 hours | |
How to order
Taping and Forming
Axial Lead Taping
Color for each numeral
FAQ
1. What's the minimum quantity customer can order?
If we have your size in stock, we can provide any quantity you want.
If we do not have, for spool wire, we can produce 1 spool, about 2-3kg. For coil wire, 25kg.
2. How can you pay for small sample amount?
We have account, wire transfer for sample amount also ok.
3. Customer do not have express account. How will us arrange the delivery for sample order?
Just need to provide your address information, we will check the express cost, you can arrange the express cost together with sample value.
4. What's our payment terms?
We can accept LC T/T payment terms, it also depending on delivery and total amount. Let's talk more in details after getting your detailed requirements.
5. Do you provide free samples?
If you want several meters and we have stock of your size, we can provide, customer need to bear the International express cost.
6. What's our working time?
We will give you reply through email/phone Online contact tool within 24 hours. No matter working day or holidays.