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1、 Sea-star Science & Technology Co., Ltd. Tel:0755-27883985 27883920 Fax:27883203Spec. No. WWS71/2-55SL-03 Page (s): 2/6PART NO. 料 号 WMZ72-9RM270 PTC THERMISTOR9.0REV NO. 版 本 0/A( Apr. 17, 06 )1. PART NO NUMBERING料号及编号说明 : MZ72-12RM270MZ72 - 9R M 270 Series系列： WMZ71 Soldering Coating Leads Type 焊封引线型
2、 MZ72 - Encased Type（ Single-element）壳装型（单片）MZ73 - Encased Type（ Double-elements）壳装型（双片） Rated Zero Power Resistance额定零功率电阻： 9R0 - 9.0 4R5 - 4.5 Tolerance of Resistance阻值允差： M - 20% V - 25% X - +30% / - 20% Max. Operating Vol. 最大工作电压 : 270 - 270VAC 290 - 290VAC 140 - 140VAC2. APPEARANCE AND DIMENSIO
3、NS外观及尺寸 (mm) 2-1.WMZ72 SeriesItems项目Materials 材料 Cap盖板PF Resin 酚醛树脂 Case外壳PF Resin 酚醛树脂 Spring Terminal簧片Phosphide-bronz Sn-Ce Patingat Surface磷青铜 ， 表面镀锡 -铈合金2-1-1. Dimensions尺寸 Thermistor Dise.热敏电阻芯片BaTiO3 etc. 钛酸钡等2-1-2. Marking标志Part No.料号 Marking标志MZ72-9RM270 WMZ729RM270 Sea-star Science & Techn
4、ology Co., Ltd. Tel:0755-27883985 27883920 Fax:27883203Spec. No. WWS71/2-55SL-03 Page (s): 3/6PART NO. 料 号 WMZ71/2-9RM270 PTC THERMISTOR9.0 REV NO. 版 本 0/A (Apr. 17, 06 )3. ELECTRICAL CHARACTERISTICS电气性能参数No. Item项目 Spec.规格值 Test conditions and methods测试条件及方法3-1.Rated Zero Power Resistance额定零功率电阻(RN
5、)9.0 20%TA： 252Testing voltage： DC 2.0 Vmax After placing for 12 hours under TA, the resistance value shall be measured.环境温度： 252测试电压： DC 2.0 Vmax在常温 TA条件下，放置 12小时后，测得阻值 RN3-2.Rated Voltage额定电压(VN)AC 220Vrms TA： -10+603-3.Max. Operating Voltage最大工作电压(Vmax)AC 270Vrms TA： -10+603-4.Min. Resistance of
6、Degaussing Coil最小消磁线圈阻值103-5.I-T Decay Curve电流衰减特性Inrush current（I 0）浪涌电流 19 Ap-p After 60 seconds60 秒后Residual Current（ I60）残余电流 7.0mArmsTA： 252Testing voltage测试电压： 220VAC, 5060HzIn static air静止空气中 . Fig.1. Sea-star Science & Technology Co., Ltd. Tel:0755-27883985 27883920 Fax:27883203Spec. No. WWS
7、71/2-55SL-03 Page (s): 4/6PART NO. 料 号 WMZ71/2-9RM270 PTC THERMISTOR9.0 REV NO. 版 本 0/A (Apr. 17, 06 )No. Item项目 Spec.规格值 Test conditions and methods测试条件及方法3-6. Voltage Withstanding耐电压No damage. The resistance change ratio within 30%无可见损伤，电阻变化率小于 30%TA： 252Voltage： AC 220Vrms (5060Hz) for 60 sec.AC
8、420Vrms for 120sec. Test Circuit： See Fig. 1. 环境温度 : 252电压： AC220V (5060Hz)持续 60 秒 , AC420V, 持续 120秒。测试电路：见图 1.。3-7. Recovery Characteristics恢复特性 RN 2 RNTA： 252 (Still air) Voltage: AC220VrmsTest circuit： See fig.1. The resistance value RN shall be measured after on 4 min. / off 6 min.环境温度 : 252 电压：
9、 AC220Vrms测试电路：见图 1.通电 4 分钟 / 断电 6 分钟后测得电阻值RN.4.TECHNICAL CHERACTERISTICS 机械性能No. Item项目 Spec.规格值 Test conditions and methods测试条件及方法4-1. Terminal Strength引出端强度No damage未损坏Fasten the body and apply a force gradually to each lead until 20 N and then keep for 10sec. Hold the body and apply a force to e
10、ach lead until 90slowly at 10N 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)根据 IEC68-2-21（ GB2423 .29）试验 U 进行试验。试验 Ua：拉力 20N，持续 10 sec.试验 Ub：弯曲 90，拉力 10N，连续两次；扭转 180 ，拉力 10N，连续两次。Spec. No. WW
11、S71/2-55SL-03 Page (s): 5/6PART NO. 料 号 WMZ71/2-9RM270 PTC THERMISTOR9 0 REV NO. 版 本 0/A (Apr. 17, 06 )No. Item项目 Spec.规格值 Test conditions and methods测试条件及方法4-2. Vibration振动No break out mechanically.无可见损伤The resistance change ratio* within20% 电阻变化率小于 20%After the PTC is soldered on the printed wirin
12、g board. Only endurance conditioning by a frequency sweep shall be made. The entire frequency range. From 10 to 55Hz and return to 10 Hz. Shall be transferred in 1 min.Amplitude(total excursion):1.5mm.This motion shall be applied for a period of 2 hours in each of 3 mutually perpendicular axis (a to
13、tal of 6 hours)频率范围： 10Hz55Hz10Hz振幅： 0.75mm(全振幅 1.5mm)振动方向：一个方向平行于引出端 ,两个方向垂直于第一个方向 ,其中一个平行于引出端的相应平面 ,三方向共 6 小时。4-3. Solder Ability可焊性The terminations shall be uniformly tinned, above 95% of wire shall be tinned. 浸润部分上锡均匀，上锡面积 95%Dipping the PTC terminals to a depth of 15mm in a soldering bath of 25
14、0 10 and to the place of 6mm far from PTC body for 50.5s(See IEC68-2-20 /GB2423.28 Ta )将引出端沾助焊剂后，浸入到温度为 250 10 、深度为 15mm的锡槽中锡面距 PTC本体下端 6mm处，持续 30.5秒。 （参见 IEC68-2-20 /GB2423.28试验 Ta）4-4.Resistance toSoldering Heat耐焊接热The resistance change ratiowithin20%.电阻变化率小于 20%Dipping the terminals to a depth of 15mm in a soldering bath of 250 5 and to the place of 6mm far from PTC body for 30.5s. After recovering for 45 hours under normal temperature. The resistance (RN) shall be measured. (See IEC68-2-20 /GB2423.28 Tb)将引出端沾助焊剂后，浸入到温度为 250 5 、深度为 15mm的锡槽中锡面距 PTC本体下端 6mm处，持续30.5秒。在常温条
