over current protection component WEILIN WMZ12A-115B68RXAP055F16-G6B silicon resin coated thermistor
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Product Description
Product Overview
This document specifies the WMZ12A series of PTC Thermistors designed for over-current protection. These components offer reliable protection against excessive current, ensuring the safety and longevity of electronic devices.
Product Attributes
- Brand: WEILIN
- Manufacturer: ZHONGHAO ELECTRONICS CO., LTD. / WEILIN CO., LTD.
- Origin: China
- Coating Material: Silicon Resin (Green)
- Leads: Tin-plating line
- Application: For over Current Protection
Technical Specifications
| Item | Specification | Test Conditions & Methods |
|---|---|---|
| 1. APPEARANCE | ||
| Marking | WMZ12A 68R | |
| Coating | Coating | Material: Silicon; Color: Green |
| 2. RATINGS | ||
| Rated Operating Voltage (UR) | 220Vrms | |
| Max Working Voltage (Umax) | 265 Vrms | |
| Max Working Current (Imax) | 0.6A | |
| Operating Temperature | -40+85(U=0) -10+60(U=Umax) | |
| 3. MECHANICAL CHARACTERISTICS | ||
| Solder-ability | The terminals shall be uniformly tinned, and its area95% | Dipping the PTC terminals to a depth of 15mm in a soldering bath of 26010 and to the place of 6mm far from PTC body for 30.5s (See IEC68-2-20 /GB2423.28 Ta) |
| Resistance To Soldering Heat | No visible mechanical damage. R/RN 20% | Dipping the terminals to a depth of 15mm in a soldering bath of 35010 and to the place of 6mm far from PTC body for 3 0.5s. After recovering for 4~5 hours under normal temperature. (See IEC68-2-20 /GB2423.28 Tb) |
| Strength of lead terminal | No break out R/RN 20% | Fasten the body and apply a force gradually to each lead until 10 N and then keep for 10sec, Hold the body and apply a force to each lead until 90slowly at 5 N in the direction of lead axis and then keep for 10sec, and do this in the opposite direction repeat for other terminal. (See IEC68-2-21/GB2423.29 Ua / Ub) |
| 4. ELECTRICAL CHARACTERISTICS | ||
| Rated Zero-power Resistance (RN) | 55-88 | Ambient temp. TA: 252; Testing voltage: 1.5VDC |
| Curie Temperature (TC) | 1157 (For information only) | The resistance at TC is twice of RN |
| Non-operating Current (IN) | 55mA | Ambient temp. Range: 602; In static air; Voltage of power supply: 220Vrms; Energized time: 60min |
| Trip Current (ISW) | 140mA | Ambient temp. Range: 252; In static air; Voltage of power supply: 220Vrms; Energized time: 5min |
| Tripping Time (Tt) | 10Sec | TA252; In static air; Testing voltage: 220Vrms, 50~60Hz; Hold current: 0.6A |
| Over-Vol. Withstanding (Ub) | 500VAC | TA: 252; Initial Current Imax: 0.6A; Test vol.: 220Vrms / 10sUb/ 15s |
| The residual current (Ir) | 10mA | TA252; Voltage of power supply: 265Vrms; Hold current: 0.6A; Testing time: 30S |
| Steady state damp heat test | No visible mechanical damage. R/ RN20% | According to IEC68-2-3 (GB/T2423.3) Test Ca. Temp: 402, RH: 90%95%, No voltage applied. Time: 504 hours. |
| 5. Inspection | ||
| Appearance | 1.5 | |
| Dimensions | 0.65 | |
| Rated Zero-power Resistance (RN) | 0.65 | |
| Trip Current (ISW) | 0.65 | |
| Tripping Time (Tt) | 0.65 | |
| Non-operating Current (IN) | 5PCS/Lot | 0 |
| Over Voltage Withstanding | 8PCS/Lot | 0 |
| Solder-ability | 10 PCS/Lot | 0 |
| Strength of lead terminal | 8PCS/Lot | 0 |
| 6. NUMBERING SYSTEM AND PACKING | ||
| Part Numbering | WMZ12A-115B68RXAP055F16-G6B | |
| Series | WMZ12A-WEILIN-ZHONGHAO PTC thermistors for over-current protection | |
| Curie temperature | 115: 115 | |
| Diameter | B: 8.5mm | |
| Rated zero power resistance | 68R: 68 | |
| Tolerance | X: Else | |
| Leads form | A: Axis wind | |
| Leads material | P: Tin-plating line | |
| Non-operating current | 055: 55mA | |
| Packing Type | F: Foldable Tape | |
| Leads length | 16: 161mm | |
| Coating Material | G Green Silicone | |
| Leads Diameter | 6 0.6mm | |
| Leads Distance | B 5.0mm | |
| Lot Numbering | 115 B A 1703226 - 1/2 | |
| Taping Dimensions | Dmax 8.5mm, Tmax 5.5mm, d0.05 0.6mm, L1max 14.5mm, P0.5 5.0mm, P00.3 12.7mm, P10.3 3.85mm, H01.0 16.0mm, H1max 34mm, W1.0 18.0mm, W01.0 10.0mm, W11.0 9.0mm, W21.0 1.5mm, Pmax 1.0mm, hmax 2.0mm | |
| PACKING TYPE | Foldable Tape: 1000 Pcs / Reel | |
| 7. STORAGE CONDITIONS | ||
| Temperature | -40+85 | |
| Humidity | 95%RH | |
| Term | 6 months (First-in/ First-out) | |
| Place | Do not expose to corrosive gas, flammable/explosive gases, oil, water, chemical liquid, or direct sunlight. | |
| Handling after seal open | Reseal promptly or store in a sealed container with a drying agent. | |
| 8. WARNING | ||
| Do not apply components exceeding Imax, Vmax, rated temperature range, or under conditions of inferior thermal dissipation to avoid deterioration, destruction, or fire. | ||
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