PTC Thermistors for Overcurrent Protection in Telecom Applications, Leaded Disk Coated 25 Ohm 250V 1A
AMWEI Ordering Code: AMZ23-25RM085
Appearance and Dimension
Leaded Coated PTC Telecom Protect Outlook Dimension
- Silicon resin coated ceramic body, green color
- Coated ceramic body outer diameter D : 6.5mm max.
- Coated ceramic body thickness T: 5.0mm max.
- Pin wire diameter d: 0.6mm
- 2 Tinned pin wire space F: 5.0± 1mm
- Pin wire length L: 25mm min.
- Coated ceramic body to wire length H: 9.0mm max.
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)
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.
Cross to EPCOS obsolete B59069B1120A051, GE RL1605-25-120-50-PTF.
Electrical Specifications
- Resistance @25C R25 : 25Ω,
- Standard R25 tolerance +/- 20%, tight tolerance +/- 15% can be supplied upon request.
- Rated voltage (RMS) : 230 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 : 85 mA
- Non-trip Current at +40C: 75 mA
- PTC Thermistor Trip Current, Operating Current at +25℃ It : 170 mA
- Tripping time at +25C: 1A→ 0.5A: < 0.7 seconds.
- Operating ambient temperature range (V=0): -40~+125C
- Operating ambient temperature range (V=230V) : 0~60C
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% |
Packaging Information
Production tape package or loose bulk in plastic package.