器件名称: W20
功能描述: Vitreous Enamelled Wirewound Resistors
文件大小: 100.73KB 共2页
简 介:Vitreous Enamelled Wirewound Resistors
W20 SERIES
● All welded construction ● High purity ceramic substrate ● Impervious lead free vitreous enamel coating ● High power dissipation for size ● High stability and reliability ● Suitable for harsh environments ● Overload characteristics ideal for protection circuits
Electrical Data
Commercial Power rating at 25°C Resistance range at 1% tolerance 2% tolerance 5% tolerance watts ohms ohms ohms pp/°C Style watts watts ohms ohms ohms ppm/°C W21 3.0 1 to 10k 0.5 to 10k 0.1 to 10k W215 5.0 1 to 15k 0.5 to 15k 0.1 to 15k Typically: <+75 W22 7.0 1 to 22k 0.5 to 22k 0.1 to 22k W23 W24 10.0 14.0 1 to 60k 1 to 100k 1 to 60k 1 to 100k 0.15 to 60k 0.2 to 100k Maximum: +200
TCR (-55° to 200°C) Approved BS CECC 40-201-002 Power rating at 25°C Power rating at 70°C Resistance range at 1% tolerance 2% tolerance 5% tolerance TCR (-55° to 200°C)
JB HB KB LB MB 2.9 5.0 7.0 10.0 14.0 2.5 4.3 6.0 9.0 12.0 1 to 10k 1 to 15k 1 to 20k 1 to 56k 1 to 100k 0.5 to 10k 0.5 to 15k 0.5 to 20k 1 to 56k 1 to 100k 0.1 to 10k 0.1 to 15k 0.1 to 20k 0.15 to 56k 0.2 to 100k ≥5 ohms < 10 ohms: ±400 ≥10 ohms: ±200
Applicable to commercial and approved ranges Limiting element voltage volts Standard values Thermal impedance °C/watt Ambient temperature range °C
100 160 200 500 E24 preferred. Other values to special order 88 58 44 29 -55 to 200
750 22
Physical Data
Dimensions Type W21 W215 W22 W23 W24
400
(mm) & weight (g) L max D max 12.7 5.6 22.0 7.0 22.0 8.0 38.0 8……
