PDF《WK73-RT》

Q'

ty/Reel (pcs) F: ±1% E24 ? E96 J: ±5% E24 TD TE WK73S2B 0.75W (1.0W2 ) ±100 1~9.76 1~9.1 200V 400V 70℃ 105℃ 5,000 C WK73R2B 0.75W ±100 10~9.76k 10~9.1k ±200 10k~1M 10k~1M WK73S2H 1.0W ±100 1~9.76 1~9.1 200V 400V 100℃ C 4,000 WK73R2H ±100 10~430k 10~430k ±200 432k~1M 470k~1M WK73S2J 1.0W ±100 1~9.76 1~9.1 200V 400V C 4,000 WK73R2J ±100 10~510k 10~510k ±200 511k~1M 560k~1M WK73S3A 1.5W (2.0W2 ) ±100 1~9.76 1~9.1 200V 400V 90℃ C 4,000 WK73R3A ±100 10~330k 10~330k ±200 332k~1M 360k~1M NEW NEW NEW THICKFILM(WIDETERMINALTYPE) Mar.

2015 矩形片式电阻器 Flat Chip Resistors 本样本手册中记载的产品规格如有变更,恕不一一奉告.订购以及使用之前,请仔细确认规格表的内容. 用于车载设备、医疗设备、航空设备以及其它涉及人身安全、或可能引起重大损失的设备上时,请务必事先与我公司联系.这些产品在这类用途中出现故障或失灵可能导致人身事故或严重损坏. Speci?cations given herein may be changed at any time without prior notice. Please con?rm technical speci?cations before you order and/or use. Contact our sales representatives before you use our products for applications including automotives, medical equipment and aerospace equipment. Malfunction or failure of the products in such applications may cause loss of human life or serious damage. www.koaglobal.com 性能 Performance 负荷减轻特性曲线 Derating Curve 在环境温度70℃以上使用时,应按照上图负荷减轻特性曲线,减小额定功率. For resistors operated at an ambient temperature of 70℃ or above, a power rating shall be derated in accordance with the derating curve. 超过上述端子部温度使用时,请根据负荷减轻特性曲线减小额定功率后使用. 有关使用方法,请参照卷首的 端子部温度负荷减轻特性曲线的说明 . For resistors operated terminal part temperature of described for each size or above, a power rating shall be derated in accordance with derating curve. Please refer to Introduction of the derating curves based on the terminal part temperature on the beginning of our catalog before use.

100 80

60 40

20 0 -60 -60 -40 -20

0 20

40 60

70 155 -55

80 100

120 140

160 Percent rated power 环境温度 Ambient temperature (℃) 额定功率比(%)

100 90

80 70

60 50

40 30

20 10

0 -60 -60 -40 -20

0 20

40 60

155 -55

80 100

120 140

160 Percent rated power 端子部温度 Terminal part temperature (℃)

105 90 额定功率比(%) 2H,2J(100℃) 2B(105℃) 3A(90℃) 试验项目 Test Items 标准值 Performance Requirements ΔR± (%+0.005Ω) 试验方法 Test Methods 保证值 Limit 代表值 Typical 电阻值 Resistance 在规定的允许偏差内 Within specified tolerance ― 25℃ 电阻温度系数 T.C.R. 在规定值以内 Within specified T.C.R ― +25℃/-55℃ and +25℃/+125℃ 过载(短时间) Overload (Short time)

2 0.2 额定电压*2.5倍施加5秒钟 Rated voltage*2.5 for 5s 耐焊接热 Resistance to soldering heat

1 0.2 260℃±5℃, 10s±1s 端子强度 Bending test

1 0.1 挠曲强度:保持点间距90mm,挠曲一次,弯曲5mm Holding point 90mm, Bending 1time. Bending 5mm 温度突变 Rapid change of temperature 0.5 0.1 -55℃ (30min.) /+155℃ (30min.)

5 cycles 耐湿负荷 Moisture resistance

2 0.2 40℃±2℃, 90%~95%RH, 1000h 1.5小时ON、0.5小时OFF的周期 1.5h ON/0.5h OFF cycle 在70℃时的耐久性 Endurance at 70℃

2 0.2 70℃±2℃, 1000h 1.5小时ON、0.5小时OFF的周期 1.5h ON/0.5h OFF cycle 高温放置 High temperature exposure 1:another 0.2:another +155℃, 1000h 硫化试验 Sulfuration test