| |
PTC thermistors for overcurrent protection
Features:
Small size .
Lead-free terminals.
No noise generated.
Low power consumption.
Short response times.
Suitable for automatic placement.
Excellent long-term reliability.
With a complete range of articles ,the over-current
and over-heat protection thermistor of all kinds of
electricity parameters can be ordered according of
the requirements of the user.
Applications：Ceramic PTC have applied widely in over-current and over-heat protection for computer peripheral equipment ,telecommunication and network equipment ,battery, motors. portable electronic products, consuming products , automobiles ,and industrial electronics products.
Approvals：
Type Designation Code：
Construction&Dimensions：
Major electric characteristics：
Over-current protection for general circui
Over-current protection for telecommunication applications
Type Item |
MZ2G—AⅡL180M |
MZ2Y(J)—BOL120M |
MZ2Y(J)—BOL500M |
R25（Ω） |
18±20% |
12±20% |
50±20% |
Non-operation
Current |
40℃，110mA
60min |
40℃，60mA
60min |
40℃，60mA
60min |
Current
Characteristics
|
3A/0.5A ≤0.2S |
|
|
2A/0.5A ≤0.5S |
|
|
1A/0.5A ≤1.4S |
1A/0.5A ≤1.2S |
1A/0.5A ≤0.65S |
0.75A/0.15A ≤5S |
0.75A/0.15A≤5S |
0.75A/0.15A ≤1S |
0.5A/0.15A ≤15S |
0.5A/0.15A ≤15S |
0.5A/0.15A ≤3S |
0.35A/0.15A ≤20S |
0.35A/0.15A≤20S |
0.35A/0.15A ≤5S |
Recovery time |
≤60S |
≤60S |
≤60S |
Lightning Surge
|
Waveform 10/310μS,
Minimum open-circuit peak voltage 1.5KV,
Short-circuit Impulse Current 37.5A,
Interval 1min,10 times.
|ΔR|/R25≤50% |
Waveform 10/310μS,
Minimum open-circuit peak voltage 1.5KV,,
Short-circuit Impulse Current 37.5A,
Interval 1min,10 times.
|ΔR|/R25≤50% |
Waveform 10/310μS,
Minimum open-circuit peak voltage 1.5KV,
Short-circuit Impulse Current 37.5A,,
Interval 1min,10 times.
|ΔR|/R25≤50% |
Over Current Withstanding
|
220V/3A,
ON 60S,OFF 600S,
20 times
|ΔR|/R25≤20% |
220V/3A,
ON 60S,OFF 600S,
20 times
|ΔR|/R25≤20% |
250V/3A,
ON 60S,OFF 600S,
20 times
|ΔR|/R25≤20% |
Over Voltage Withstanding
|
250V/3A,
ON 15min,1 times
|ΔR|/R25≤20% |
250V/3A,
ON 15min,1 times
|ΔR|/R25≤20% |
650V/10A,
ON 30min,1 times
|ΔR|/R25≤50% |
Reliability Test：
Item |
Test condition |
Standard |
Specification |
Damp heat，steady state |
Ta=40℃,R.H.=80%-90%, Duration: 24Hr |
IEC 60068-2-3 |
∣ΔR25∣<10% |
Humidity load test |
-40℃/15min→55℃/15min, 50times |
IEC 60068-2-14 |
∣ΔR25∣<25% |
High temperature storage test |
PTCR shall be exposed to a temperature of 55±3℃ for 48 hours with no loading |
IEC 60738-1 |
∣ΔR25∣<10% |
Low temperature storage test |
PTCR shall be exposed to a temperature of -40±3℃ for 48 hours with no loading |
IEC 60738-1 |
∣ΔR25∣<10% |
Item |
Test condition |
Standard |
Specification |
Solder ability |
Dipping the PTC terminals to a depth of 15mm in a soldering bath of 230±5℃ and to the place of 2-2.5mm far from PTC body for 5±0.5s |
IEC 60068-2-20/GB2423.28 Tb |
Min.95% terminal covered |
Resistance to soldering heat |
Dipping the terminals to a depth of 15mm in a soldering bath of 250±5℃ and to the place of 2-2.5mm far from PTC body for 5±0.5s. After recovering for 4-5 hours under normal termperature. The resistance shall be measured. |
IEC 60068-2-20/GB2423.28 Tb |
No visible mechanical damage
△R/R②≤ 20% |
Strength of lead terminal |
Fasten the body and apply a force gradually to each lead until 10N and then keep for 10sec, hold the body and apply a force to each lead until 90º slowly at 5N in the direction of lead axis and then keep for 10sec. And do this in the opposite direction repeat for other terminal. |
IEC 60068-2-21/GB2423.29 Ua/Ub |
No break out
|
|
|
