RYG7W-惠州市众佳电子有限公司

RYG7W

Rated power: 7W

Resistance range: 0.1 Ω~100K Ω

Maximum accuracy: ± 1%

Resistance Technology: Membrane Resistors

Packaging material: alloy metal

Packaging method: Vacuum evaporation

Installation method: Welding installation

Working temperature range: -55~125 ℃

Dimensions: L=29.5mm D=8.5mm

Application areas: Home appliances, communications, instruments and meters

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Product Introduction

Metal oxide film resistors are resistors made of special metals or alloys as resistance materials, which are formed by vacuum evaporation or sputtering on ceramic or glass substrates to form an oxidized resistance film layer. Metal film resistors are generally made using vacuum evaporation technology, which heats the alloy in a vacuum, evaporates the alloy, and forms a conductive metal film on the surface of the ceramic rod. Etching and changing the thickness of the metal film can control the resistance value. Its electrical properties such as heat resistance, noise potential, temperature coefficient, and voltage coefficient are superior to carbon film resistors. The manufacturing process of metal film resistors is relatively flexible. Not only can its material composition and film thickness be adjusted, but the resistance value can also be adjusted through grooves, thus making it possible to produce resistors with good performance and a wide range of resistance values.

Structural diagram

External dimensions and main technical indicators

Dimensions Unit: mm

model	External dimensions(mm)
	L	D	l	d
RYG7W	29.5±1.0	8.5±1.0	27±2	1.0±0.05

Main technical indicators

model	Rated power(W)	Resistance range(Ω)	accuracy(%)	Element limit resistance(V)	Voltage endurance(V)	temperature coefficient(PPM/℃)
RYG7W	7	0.1Ω～100KΩ	±1% ±2% ±5%	500	800	±250%

Power consumption reduction curve chart

Main inspection items, test methods, and performance requirements

Inspection items	performance requirement	test method
Weldability	Infiltration area≥95%	Welding groove method 235±5℃，2s
Terminal tensile strength	ΔR≤±(1%R 0.05Ω)	10N，30s
Steady damp-heat	ΔR≤±(5%R 0.1Ω)	40±2℃，93±3%RH，1000h
Vibration	ΔR≤±(1%R 0.05Ω)	10～500Hz，0.75mmm or 98m/s²，6h
Resistance to welding heat	ΔR≤±(1%R 0.05Ω)	260±5℃ 10±1s
Temperature Rapid Culture	ΔR≤±(1%R 0.05Ω)	-55℃，30min/125℃，30min，5cycles
Durability at 70 ℃	ΔR≤±(5%R 0.1Ω)	70±2℃，P_R，1000h
overload	ΔR≤±(1%R 0.05Ω)	2.5 V_R，5s

Customer selection example: RJ 1/4W 20 Ω± 5%, model: RJ-14-20R-J

20R

code

Rated power

resistance

accuracy

RY series
RYG series

14/14S=1/4W

15/15S=1/2W

16/16S=1W

17/17S=2W

18/18S=3W

S5/5=5W

7=7W

0R1=0.1Ω

0R22=0.22Ω

100R=100Ω

F=±1%
G=±2%
J=±5%

Suggestions for using resistors

It is best to leave 1.5 times the power margin for resistors in circuits. For example, if the voltage in the circuit is 100V and the current is 0.01A, the calculated power P=100 * 0.01=1W. At this time, a resistor of 1W cannot be used, and 1 * 1.5=1.5W is calculated. If there is no 1.5W resistor, a resistor of 2W is needed.
Resistors should not exceed their maximum operating voltage during use

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