Wirewound resistors
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Product Name: RX21-type paint wirewound resistors
Product Category: wirewound resistors
Release Date: 2012-02-08
Product description:
Product Description
The RX21 Leaded Wirewound not flammable coating resistance
Model: RX21
Features: surface coating of high temperature coatings, power, heat resistance, excellent low temperature coefficient; short-term ultra-strong load capacity, resistance did not change for many years, non-flammable coating, or may choose a non-sense type wound
Applications: Suitable for AC DC, pulse voltage divider circuit, current limiting and load
Use of the environment: rated power temperature (+70 ° C); temperature range (-55 ° C ~ +375 ° C)
Structure: Axial Lead solder-free installation
Applicable standards: GB/T5729-2003 SJ1331-78
■ Dimensions
Model Rated Power (W) outside the type size (mm)
Dmax
Lmax
d l The
RX21 1W 4.5 ± 0.5 10.5 ± 0.1 0.8 ± 0.05 30 ± 3
2W/3W 6.5 ± 0.5 16.0 ± 0.1 0.8 ± 0.05
5W/6W 7.5 ± 0.5 23.5 ± 0.1 0.8 ± 0.05
7W/8W 8.5 ± 0.5 32.5 ± 0.1 0.8 ± 0.05
10W 8.5 ± 0.5 39.5 ± 0.1 0.8 ± 0.05
12W/15W 8.5 ± 0.5 47.0 ± 0.1 0.8 ± 0.05
■ The main technical indicators
Model Rated Power (W) temperature coefficient of resistance range (Ω) Resistance tolerance (%) (x 10-6 / ° C)
Maximum working voltage (V) the maximum overload voltage (V)
RX21 1W 0.1 ~ 680 ± 1
± 5
± 250
300 600
2W/3W 0.1 3K 350 650
5W/6W 0.1 5K 500 800
7W/8W 0.1 ~ 6.8K 500 800
10W 0.1 ~ 8K 500 800
12W/15W 0.1 10K 500 800
■ The main test items, test methods and performance requirements
The test item performance requirements, test methods
The temperature coefficient of resistance ≤ ± 250 (× 10-6 / ° C)
-55 ° C / +20 ℃ 20 ℃ / +155 ℃
Terminal intensity R ≤ ± (1% R +0.05 Ω)
Bent twice in a row in tension 5N or 10N
Withstanding voltage breakdown or arcing V-shaped block method, the AC voltage, the peak of insulation voltage of 1.42 times, 1min
The weldability of solder to flow freely and lead wetting 235 ± 5 ° C 2 ± 0.5s
Resistance to soldering heat ΔR ≤ ± (1% R +0.05 Ω)
260 ± 5 ℃ 10 ± 1s
Overload ΔR ≤ ± (2% R +0.1 Ω)
2.5VR 5s
Rapid change of temperature ΔR ≤ ± (1% R +0.05 Ω)
-55 ° C / +125 ° C 5 cycles
Vibration ΔR ≤ ± (1% R +0.05 Ω)
10 ~ 500Hz 98m/s2
Long-term load ΔR ≤ ± (2% R +0.05 Ω)
+40 ± 2 ° C VR, 1000h
Incombustible not burning, respectively, according to 5,10,16 times the rated power AC voltage for 5 minutes
Surface temperature ≤ 210 ° C rated power is applied load
Damp ΔR ≤ ± (5% R +0.1 Ω)
To +40 ± 2 ° C and humidity 95 to 98% of 240h