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热敏503J 5%电阻温度表R25=50K B25/50=4350KTRTRTRTRTRTRTR-5510583.3-291260.33-3226.8272355.2014916.87756.151012.578-549659.64-281171.92-2213.7522452.5395016.179765.9341022.499-538823.97-271090.36-1201.522550.0005115.521775.7261032.423-528067.32-261015.080190.072647.6425214.893785.5271042.35-517381.62-25945.551179.3462745.3895314.295795.3361052.279-506759.67-24881.2822169.32843.2575413.723805.1521062.211-496195.08-23821.8493159.8832941.2385513.178814.9761072.145-485682.11-22766.8524151.0523039.3265612.658824.8061082.081-475215.67-21715.9325142.7673137.5145712.161834.6441092.02-464791.19-20668.7586134.9913235.7965811.686844.4871101.961-454404.58-19625.0297127.693334.1685911.233854.341111.903-444052.19-18584.4718120.8323432.6236010.8864.1931121.848-433730.73-17546.8339114.3863531.1586110.385874.0541131.795-423437.26-16511.88510108.3273629.767629.989883.921141.743-413169.14-15479.41611102.6273728.447639.611893.7921151.693-402924-14449.2361297.2653827.193649.249903.6681161.645-392699.71-13421.1661392.2173926.002658.902913.5491171.598-382494.33-12395.0471487.4634024.87668.571923.4351181.553-372306.13-11370.7291582.9854123.795678.253933.3251191.51-362133.57-10348.0761678.7654222.772687.949943.2191201.468-351975.22-9326.9651774.7874321.799697.658953.1171211.427-341829.81-8307.2791871.0344420.873707.38963.0181221.388-331696.2-7288.9131967.4944519.992717.112972.9241231.349-321573.34-6271.7712064.1524619.154726.856982.8321241.313-311460.3-5255.7632160.9974718.355736.611992.7441251.277-301356.22-4240.8072258.0174817.595746.3761002.66002、材料包封材料引线材质本体颜色标识颜色环氧树脂镀锡钢线黑色白色3、型号说明MF11503J温度补偿型NTC热敏电阻器电阻值阻值允差50 103=50K 5%4、电气性能项目符号测试条件单位性能要求4.125℃的零功率电阻值R25Ta=25 0.05℃测试功率 0.1mWK 50 5%4.2B值B25/50B=[(Ta Tb)/(Tb-Ta)] ln(Ra/Rb)K4350 5%4.3耗散系数 Tb=50℃ 0.1℃mW/℃静止空气中 64.4时间常数 Tb=50℃ 0.1℃sec静止空气中 304.5绝缘电阻/100V/DC 1minM 1004.6工作温度范围//℃-55 ~ 1255、可靠性能试验项目测试条件及方法技术要求5.1可焊性将引线浸入235 5℃的锡液中，锡面距本体下端6mm处，时间2~3秒焊料在引线浸入部分表面涂布均匀、光滑，面积在95%以上5.2耐焊接热将引线浸入265 5℃的锡液中，液面距电阻体6mm，时间5 1秒无可见性损伤，R25 R/R 2%5.3引出端强度拉力：10N，时间：10 1秒无可见性损伤，R25 R/R 2%5.4温度快速变化-55℃30min 25℃5min 125℃30min 25℃5min，反复5次无可见性损伤，标志清晰，R25 R/R 3%5.5高温温度：125℃，时间：16小时无可见性损伤，标志清晰，R25 R/R 3%5.6寒冷温度：-55℃，时间：2小时无可见性损伤，标志清晰，R25 R/R 3%5.7低气压气压：40 0.1Kpa，时间:4小时无可见性损伤，R25 R/R 3%5.8稳态温热温度：40℃，湿度：93%，时间：48 2小时无可见性损伤，标志清晰，R25 R/R 5%，耐电压 700/AC 1min绝缘电阻 100M 5.9交变湿热温度：25~40℃，湿度：90%，时间：24小时无可见性损伤，标志清晰，R25 R/R 3%，耐电压 700/AC 1min绝缘电阻 100M 5.10上限类别温度下零功耗的耐久性温度: 125℃ 2℃,时间:1000 24小时无可见性损伤，标志清晰R25 R/R 5%5.11振动频率范围：10~500HZ，振幅：0.75mm或100m/S2，时间2小时无可见性损伤，R25 R/R 3%5.12碰撞加速度：250m/S2，脉冲持续时间：6mS，碰撞次数：4000次无可见性损伤，R25 R/R 3%6、焊接条件焊接时，焊接处距电阻体根部至少6mm，焊接温度应低于350℃，焊接时间应尽量短。7、储存条件7.1储存温度：-10℃ ～ 40℃；7.2储存湿度： 75% RH；7.3避免存放在具有腐蚀性气体及光照的环境下；7.4包装打开后需重新密封保存；