Preheating Starting MZ3 1200 Ohm PTC Thermistor 800V 75C PTC Current Limiter
Preheating Starting PTC Thermistor MZ3 800~1200 Ohm 800V 75C For Energy Saving Lamps
I Description Of The Preheating Starting PTC Thermistor MZ3
Delay life and energy-saving is avaiable for electronic light and ballast.
One of restricting current unite in digital multimeter Ac circuit thermal protection.
Environmental temperature: -10 ~ +125℃
Relative humidity:93%( -40±2℃ )
Vibration frequency:10-55Hz
Acceleration:98m/s2
High ageing cofficient
Superior withstanding voltage oxidation-resistance.
II Size Of The Preheating Starting PTC Thermistor MZ3(Unit:mm)
| Number | Name | Technical Requirements | Leads |
| D | Diameter | 4.8max | □ Straight □ Axis Formed ■ In-Forming |
| T | Thickness | 4.8max |
| L | Lead Length | Min20 |
| W | Distance between fuses | 5.0±0.5 |
| d | Diameter of lead | 0.5±0.05 |
III Coating Details Of The Preheating Starting PTC Thermistor MZ3
| Coating | Material | Color |
□ No coating ■ Coating | ■ PF resin □ Silicon | ■ Yellow □ Green |
IV Electrical Performances Of The Preheating Starting PTC Thermistor MZ3
Number | Items | Technical Requirements | Test Conditions |
| 3-1 | Resistant for Zero Rated Power | 800-1200Ω | Atmosphere Temperature:25±2℃ Accuracy of the Test:±0.5% |
| 3-2 | Over Voltage Withstanding | ≥800V ΔR/Rn≤20% No visual damage | Starting Current:≥200mA, Starting Voltage:220VAC,hold on for 7s,and then change to high voltage800VAC,for 6s.the is shown as follows: Stay under the conditions of regular temperature and humidity for 4-5 hours, and then check the Rn again. |
| 3-3 | Over Current withstanding | ≥200mA ΔR/Rn≤20% No visual damage | Starting Current:≥200mA,Voltage 220VAC, switch on the circuit for 1 minute after every 5minutes, switch-off, and repeat this operation for 20 times. Put it under the conditions of regular temperature and humidity for 4-5 hours and then check the Rn again |
| 3-5 | Curie Temperature | 75℃ | Check the temperature at 2 times Rn. |
V APPLICATION CIRCUIT Of The Preheating Starting PTC Thermistor MZ3
VI Other Performance Of The Preheating Starting PTC Thermistor MZ3
Number | Items | Technical Requirements | Test Conditions |
| 4-1 | Appearance | No noticeable defect, such as, bubbles and micro holes, etc; NO visible damage that may reduce its performance; the symbol is clear | Visual Check |
| 4-2 | Welding | It's tinned evenly and with smooth welds, and the tinned area 95% | Do the test according GB2423-28 of Ta, put welding aid on the faze end and soaked it into the 230℃ tin solution with only 5mm distance to the PTC body above the solution, and maintain for 3-5s. |
| 4-3 | Heat Resistance | Check the variation rate of resistance before and after the test ΔR/Rn≤20% | Do the test according to GB2423-28 of Tb stsy under the regular temperature and humidity for 4-5 hours, and then check the Rn again.Dipping terminals to a depth of 15mm in a soldering bath of 255℃±10℃,and to the place of 6mm far from PTC boby for 3±0.5s |
| 4-4 | Intensity of terminal | Check the variation rate of resistance before and after the test ΔR/Rn≤20% No Visual Damage No break out | Do the test according to GB2423-29 of U Test Ua: 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 90° slowly at 5N in the direction of lead axis and then keey for 10sec,and do this in the opposite direction repeat for other terminal. |
VII CHARACTERISTICS Of The Preheating Starting PTC Thermistor MZ3
VIII Instrument small current protection series Specification
| Item | withstand voltage (V) | Current when don’t oprate at 40 ℃(mA) | Operating current (mA) | Resistance when temperature at 25℃ (ohm) | Curie point(℃) | Ontology diameter (Dmax)(mm) | thickness (Tmax)(mm) | lead spacing (W)(mm) | Terminal diameter (phi d)(mm) |
| MZ3B03D75C2500RM | 800 | 4 | 8 | 2.5K±30% | 75 | 4.5 | 4.5 | 5.0 | 0.5 |
| MZ3B03D75C2000RM | 800 | 5 | 10 | 2.0K±30% | 75 | 4.5 | 4.5 | 5.0 | 0.5 |
| MZ3B03D75C1500RM | 800 | 6 | 12 | 1.5K±20% | 75 | 4.5 | 4.5 | 5.0 | 0.5 |
| MZ3B03D75C1000RM | 800 | 8 | 16 | 1.0K±20% | 75 | 4.5 | 4.5 | 5.0 | 0.5 |
| MZ3B03D75C500RM | 800 | 10 | 20 | 500±20% | 75 | 4.5 | 4.5 | 5.0 | 0.5 |
| MZ3B03D75C400RM | 800 | 12 | 24 | 400±20% | 75 | 4.5 | 4.5 | 5.0 | 0.5 |
| MZ5B05D75C300RM | 800 | 15 | 30 | 300±20% | 75 | 5.0 | 4.5 | 5.0 | 0.5 |
| MZ5B05D75C250RM | 800 | 20 | 40 | 250±20% | 75 | 5.0 | 4.5 | 5.0 | 0.5 |
| MZ6B06D120C400RM | 800 | 25 | 50 | 400±20% | 120 | 6.0 | 4.5 | 5.0 | 0.6 |
| MZ6B06D120C200RM | 800 | 30 | 60 | 200±20% | 120 | 6.0 | 4.5 | 5.0 | 0.6 |
| MZ6B06D120C150RM | 800 | 35 | 70 | 150±20% | 120 | 6.0 | 4.5 | 5.0 | 0.6 |
| MZ6B06D120C100RM | 600 | 40 | 80 | 100±20% | 120 | 6.0 | 4.5 | 5.0 | 0.6 |
| MZ6B06D120C90RM | 600 | 45 | 90 | 90±20% | 120 | 6.0 | 4.5 | 5.0 | 0.6 |
| MZ6B06D120C80RM | 500 | 50 | 100 | 80±20% | 120 | 6.0 | 4.5 | 5.0 | 0.6 |
| MZ6B06D120C70RM | 500 | 55 | 110 | 70±20% | 120 | 6.0 | 4.5 | 5.0 | 0.6 |
| MZ6B06D120C60RM | 400 | 60 | 120 | 60±20% | 120 | 6.0 | 4.5 | 5.0 | 0.6 |
| MZ6B06D120C50RM | 400 | 65 | 130 | 50±20% | 120 | 6.0 | 4.5 | 5.0 | 0.6 |
| MZ8B08D120C55RM | 400 | 70 | 140 | 55±20% | 120 | 8.0 | 4.5 | 5.0 | 0.6 |
| MZ8B08D120C45RM | 400 | 80 | 160 | 45±20% | 120 | 8.0 | 4.5 | 5.0 | 0.6 |
| MZ8B08D120C30RM | 350 | 90 | 180 | 30±20% | 120 | 8.0 | 4.5 | 5.0 | 0.6 |
| MZ8B08D120C25RM | 300 | 100 | 200 | 25±20% | 120 | 8.0 | 4.5 | 5.0 | 0.6 |
MOQ>/=1000PCS,Resistance can be set by customers from range, in principle is not less than 20%.
Owing to space constraints, listed above is only commonly used models, the company according to clients provide more different types of products.
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