PTC Thermistor for Telecom Overload Overcurrent Protection, Leaded Disk Coated 10 Ohm 250V 1A
Ceramic PTC thermistor help telecom equipment provide protection against power cross, power induction surges and lighting surge defined in ITU, Telcordia, UL. Compliant with ITU-T K20 K21 K45. Suitable for continuous connection to main voltage 110/230 VAC in tripped (high ohmic) condition. Negligible resistance drift after soldering or switching.
AMWEI PTC Thermistor for Telecom Overcurrent Protection Leaded Coated Outlook Dimension
PTC Thermistor Radial Kinked Lead Resin Coated Drawing
- Silicon resin coated ceramic body, grey color
- Coated ceramic body outer diameter D : 7.5mm max.
- Coated ceramic body thickness T: 5.0mm max.
- Pin wire diameter d: 0.6mm
- 2 Tinned pin wire space F: 6.0± 1mm
- Pin wire length L: 25mm min.
- Coated ceramic body to wire length H: 14mm max.
AMWEI PTC Thermistor for Telecom Overcurrent Protection Leaded Coated 250V 10Ω 1A Application
Overcurrent protection for telecom applications
Suitable for line card applications e.g. POTS, access networks,
customer premises equipment (CPE) or integrated voice data (IVD)
AMWEI PTC Thermistor for Telecom Overcurrent Protection Leaded Coated Features
Compliant with ITU-T standards
- basic-level lightning surges (10/700 µs)
- basic level power induction (600 V, 1 A, 0.2 s)
- power contact criteria A/B (230 V, 15 min.)
Matching available with narrow resistance tolerance.
Tight resistance matching maintained after switching.
Negligible resistance drift after soldering or switching.
AMWEI PTC Thermistor for Telecom Overcurrent Protection Leaded Coated Specifications
- Resistance @25C R25 : 10Ω,
- Standard R25 tolerance +/- 20%.
- Rated voltage (RMS) : 220 V
- Maximum operating voltage Vmax: 250 V
- Maximum withstanding voltage: 350V
- Maximum permissible repetitive turn over current Imax: 1 A
- Non-trip Current at +25C : 130 mA
- Non-trip Current at +40C: 110 mA
- PTC Thermistor Trip Current, Operating Current at +25℃ It :300 mA
- Tripping time at +25C: 1A→ 0.5A: < 2 seconds.
- Reference Temperature (Curie temperature, Switch temperature) : 110C
- Operating ambient temperature range (V=0): -40~+125C
- Operating ambient temperature range (V=230V) : 0~60C
AMWEI PTC Thermistor for Telecom Overcurrent Protection Leaded Coated 10Ω 1A Reliability Data
| Test Item | Standard | Test conditions | |ΔR25/R25| |
|---|---|---|---|
| Electrical endurance, cycling |
IEC 60738-1 | Room temperature, 1A; 230V Number of cycles: 100 |
<25% |
| Electrical endurance, constant |
IEC 60738-1 | storage at Voltage: 230V Ambient temperature: +60C Test duration: 1000 h |
<25% |
| Damp heat | IEC 60738-1 | Temperature of air: 40℃, Relative humidity of air: 93%, Duration: 56 days Test according to IEC 60068-2-78 |
<10% |
| Lead wire tensile | IEC60068-2-21 | Test Ua: pull strength 10N, 10 seconds, Test Ub: bending 90°, pull strength 5N, successively twice. Test Uc: revolving 180°, successively twice. |
<20% |
| Rapid change of temperature |
IEC 60738-1 | T1 = Top,min (0 V), T2 = Top,max (0 V) Number of cycles: 5 Test duration: 30 min Test according to IEC 60068-2-14, test Na |
<10% |
| Climatic sequence | IEC 60738-1 | Dry heat: T = Top,max (0 V) Test duration: 16 h Damp heat first cycle Cold: T = Top,min (0 V) Test duration: 2 h Damp heat 5 cycles Tests performed according to IEC 60068-2-30 |
<10% |
AMWEI PTC Thermistor for Telecom Overcurrent Protection Leaded Coated 10Ω 1A ITU Performance
| Test Item | Condition | Test Method | Performance Requirement |
|---|---|---|---|
| Over Current Withstanding | 220V/1A, 20 cycles |
Max. voltage of supply: 220VAC, Initial current: 1A. ON 60S, OFF 600S , Cycle:20 times, |
No damage, 4 hours after the conditioning then re-test Rn. Zero power resistance at 25℃ ΔR/Rn≤20%. |
| Lightning Surge Current Withstanding | 10/1000μs, 30 cycles |
Duration: 30 times, Temperature: 25℃ Short circuit current wave:10/1000μs, Minimum open voltage: 1.5 KV Short circuit current peak value: 25A Interval time: 3min |
No damage, 4 hours after the conditioning then re-test Rn. Zero power resistance at 25℃ ΔR/Rn≤20%. |
| Power Line Contact (Over Voltage Withstanding) |
250V/1A, 15 minutes |
Duration: 1 cycle Ambient Temperature: 25 ± 2 ℃ Voltage: 250 Vrms Frequency: 50Hz Current: 1A, 15 minutes On |
No damage, 4 hours after the conditioning then re-test Rn. Zero power resistance at 25℃ ΔR/Rn≤20%. |
| Fail Model | 250V/10A, 15 minutes |
Voltage of power supply: 250VAC. Initial current: 10Arms. Energized time: 15min. |
High resistance or open circuit is allowable. Low resistance state or firing is not allowed |
Packaging Information
Production tape package or loose bulk in plastic package.