Vitreous Enameled Power Wirewound Resistors

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Vitreous Enameled Power Wirewound Resistors - DRB20

Power Wirewound Enameled Resistor (DRB20) Is a cylindrical ceramic tube at both ends clips to fixed terminals. Ceramic tube winding copper nickel or nickel-chromium alloy resistance wire. Surface coated with moisture-resistant, heat-resistant, non-corrosive, non-flammable coatings (such as silicone, epoxy, cement, glazed porcelain, etc.). After high temperature treatment, the resistor dried and insulation fixed, then fitted with fixed foot frame.

Due to good flexibility, (DRB20) can be made of multi-terminal, low inductive resistance, semi-adjustable type of various types of resistors. Resistance range from 1.7Ω to 75KΩ, with power ranges from 8W to 500W, and optional tolerance accuracy of ±1%、±5%、±10%. Size of cylindrical ceramic tube matches with industry standards .

Tubular series power-glaze wire wound resistor (DRB20) widely used as brake resistors, bleeder resistors, aging resistors, brake resistors. According to different occasions, but also can be called brake resistors, discharge resistors, load resistors, current limiting resistors, charging resistors or discharge resistors. Non-inductance series adopts Ayrton Perry winding method to eliminate inductance parasitic effect, so as to minimize inductance, suitable for high energy consumption, high-temperature environment.

Be glazed coating protection, not afraid of external mechanical strength and dust environment. Not only large power and strong, shock-resistant, but also features good heat dissipation. This (DRB20) is easy to install and use. This is suitable for a variety of applications. More than 1.2 times the same specifications or requirements of peer production, more power, can be long time loading and impact. Applications include industrial machinery, load testing, power distribution, instrumentation and automation control devices.

DeMint Electronics (DRB20) vitreous enameled power wirewound resistors meet RoHS compliant, lead-free standard and short production cycle. Those Products widely used in power tools, switch applications, power supplies, welding machines, high voltage applications, consumer product applications, home entertainment, home appliances products. For the customized special applications, please contact our sales to discuss the details.

Download complete datasheet: Vitreous Enameled Power Wirewound Resistors (DRB20)。
Link to more tube-mounted power wirewound resistor series: Smooth Wirewound Tubular Power Resistor (DR) and Smooth Wound Power Adjustable Resistors (DRS)

Features:

Small size, high power.
Glaze coating, simple structure, easy to install.
Fixed resistance and adjustable resistance optional.

Applications:

Electric tools, Consumer product applications.
Power supply, high voltage applications.
Welding machine, switch applications.

Power Wirewound Vitreous Enameled Resistors (DRB20) Specification
Type	Rating Power (W)	Resistance (Ω)		Weight (g)
Type	Rating Power (W)	DRB20	DRB20-T	Fixed	Adjustable
DRB20 (DRB20T)	8	5.1-3.3K		23
	10	5.1-10K	5.1-200	17	34
	16	5.1-15K	5.1-220	36	42
	20	5.1-20K	5.1-430	44	52
	25	10-24	10-510	57	68
	30	10-30K	10-1K	80	90
	40	20-51K	20-1.2K	98	110
	50	24-56K	20-1.5K	132	150
	75	20-51K	24-2K	253	270
	100	24-62K	20-4.3K	286	200
	150	20-75K	20-4.3K	385	300
	200	4.7-68K	5.1-4.3K	475	400
	250	4.7-68K	5.1-4.3K	510	530
	300	1.7-68K	5.1-4.3K	630	650
	400	4.7-75K	6.2-5.1K	1000	1050
	500	4.7-75K	6.2-5.1K	1340	1400

Power Wirewound Enameled Resistor (DRB20) Performance
Test Item	Characteristics	Test Methods
Solderability	Even sticky tin	HiSnPb39, 75W Soldering iron method, tinning
Insulation resistance	>20MΩ/cm²	500V DC test voltage
Insulation voltage	No breakdown, arcing	2000V DC or 50Hz AC peak with the same
Body strength	ΔR ≤ ± (1%R + 0.05Ω)	≤40W Loading 30N, ≥50W Loading 100N
Vibration	ΔR ≤ ± (1%R + 0.05Ω)	Frequency 10-500Hz, Acceleration 98m/s², 1h
Collision test	ΔR ≤ ± (1%R + 0.05Ω)	Frequency 40-80 次/min, Acceleration 245m/s², 2000 times
Temperature Rise	<325°C	Apply rated power Load
Rapid temperature changes	ΔR ≤ ± (2%R + 0.1Ω)	θ A=-55°C θ B=+200°C, 5 Cycles
Constant Damp Heat	ΔR ≤ ± (2%R + 0.1Ω)	Temperature 40±2°C, Temperature 93±2%RH, 96h
Over loading	ΔR ≤ ± (2%R + 0.1Ω)	Apply 10 times the rated power load 5s
Room temperature durability	ΔR ≤ ± (5%R + 0.1Ω)	Apply rated power load 1000h

Power Wirewound Glaze Resistors (DRB20) Dimensions (Unit: mm)
Power Wirewound Glaze Resistors (DRB20) Dimensions (Unit: mm) Power Wirewound Glaze Adjustable Resistors (DRB20-T) Dimensions (Unit: mm)
Type	Dimensions (mm)
Type	L	D	d	H	h	L₁	K	b	t	d₁
DRB20(T^*)-8	35±1.5	14±2	5.5±0.5		28.5±2.5			3.5±0.8	4.5±1	2±0.8
DRB20(T)-10	41±1.5	14±2	5.5±0.5	31±3	28.5±2.5	20±2	6±2	3.5±0.8	4.5±1	2±0.8
DRB20(T)-16	45±1.5	17±2	8±0.5	34±3	31±2.5	23±2	6±2	3.5±0.8	4.5±1	2±0.8
DRB20(T)-20	51±2	17±2	8±0.5	34±3	31±2.5	30±3	6±2	3.5±0.8	4.5±1	2±0.8
DRB20(T)-25	51±2	21±2.5	12±0.6	39±3	35±2.5	30±3	6±2	3.5±0.8	4.5±1	2±0.8
DRB20(T)-30	71±2.2	21±2.5	12±0.6	39±3	35±2.5	44±3	6±2	3.5±0.8	4.5±1	2±0.8
DRB20(T)-40	87±2.2	21±2.5	12±0.6	39±3	35±2.5	57±3		3.5±0.8	4.5±1	2±0.8
DRB20(T)-50	91±2.4	29±3	20±1.1	47±3	43±2.5	60±3	7±2	4.5±1	6±1	2.5±0.8
DRB20(T)-75	140±3.2	29±3	20±1.1	47±3	43±2.5	110±3	7±2	4.5±1	6±1	2.5±0.8
DRB20(T)-100	170±3.5	29±3	20±1.1	47±3	43±2.5	140±3	7±2	4.5±1	6±1	2.5±0.8
DRB20(T)-150	215±4	29±3	20±1.1	47±3	43±2.5	185±3	7±2	4.5±1	6±1	4±0.8
DRB20(T)-200	215±4	38±3	38±3	61±3	58±2	160±3	7±2	8±1	9±1	4±0.8
DRB20(T)-250	266±4	30±2	30±2	50±3	50±2	210±4	7±2	8±1	9±1	4±0.8
DRB20(T)-300	266±4	36±2	36±2	58±3	58±2	210±4	8±2	8±1	9±1	4±0.8
DRB20(T)-400	250±4	54±2	54±2	76±3	77±3	180±4	10±2	8±1	16±1	8±1
DRB20(T)-500	300±4	54±2	30±2	76±3	77±3	230±4	10±2	8±1	16±1	8±1
T^* : Adjustable Wirewound Resistors。

Vitreous Enameled Power Wirewound Resistors - DRB20

Power Wirewound Glaze Resistors (DRB20) Dimensions (Unit: mm)

Power Wirewound Glaze Adjustable Resistors (DRB20-T) Dimensions (Unit: mm)