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Thick Film Chip Resistors KOA RK73B2ETTD183J Rectangular Ceramic Substrate Metal Glaze Construction

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Thick Film Chip Resistors KOA RK73B2ETTD183J Rectangular Ceramic Substrate Metal Glaze Construction

Power(Watts) : 500mW

Resistance : 18kΩ

Voltage Rating : 200V

Temperature Coefficient : ±200ppm/℃

Operating Temperature : -55℃~+155℃

Type : Thick Film Resistor

Tolerance : ±5%

Description : 500mW 18kΩ 200V ±200ppm/℃ Thick Film Resistor ±5% 1210 Chip Resistor - Surface Mount RoHS

Mfr. Part # : RK73B2ETTD183J

Model Number : RK73B2ETTD183J

Package : 1210

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THICK FILM CHIP RESISTORS RK73B

The RK73B series offers a robust lineup of thick film chip resistors, available in sizes from 0402 to 6432. Featuring a metal glaze thick film for excellent heat and weather resistance, these resistors are suitable for both reflow and wave soldering. They are RoHS compliant, with exceptions for lead glass in electrodes, resistance film, and glass. AEC-Q200 data is available for most models.

Product Attributes

Brand: KOA
Product Type: Thick Film Chip Resistors
Construction: Rectangular Chip Resistor
Appearance Color: Black
Material: Ceramic Substrate, Metal Glaze Thick Film
Certifications: EU RoHS compliant (excluding lead glass), AEC-Q200 (except 1F)
Reference Standards: IEC 60115-8, JIS C 5201-8, EIAJ RC-2134C

Technical Specifications

Model (Size Code)	Dimensions (mm) L x W x t	Rated Power (at 70)	Max. Operating Temp.	Resistance Range ()	Max. Operating Voltage	Max. Overload Voltage	Resistance Tolerance	TCR (x10^-6/K)	Packaging (pcs/reel)
1F (0402/01005)	0.4 x 0.2 x 0.13	0.03W	125	1 to 10M	20V	30V	2%, 5%	200, 250, 0 to +300	40,000 (TCM)
1H (0603/0201)	0.6 x 0.3 x 0.23	0.05W	125	1 to 10M	25V	50V	2%, 5%	200, 400	15,000 (TBL/TCM)
1E (1005/0402)	1.0 x 0.5 x 0.35	0.1W	125	1 to 10M	75V	100V	2%, 5%	200, 400	10,000 (TP) / 20,000 (TPL)
1J (1608/0603)	1.6 x 0.8 x 0.45	0.1W / 0.125W	125	1.1k to 22M	-	-	2%, 5%	200, 400	10,000 (TP)
2A (2012/0805)	2.0 x 1.25 x 0.5	0.25W	125	1 to 10M	150V	200V	2%, 5%	200, 400	10,000 (TP) / 5,000 (TD) / 4,000 (TCM)
2B (3216/1206)	3.2 x 1.6 x 0.6	0.25W	125	1 to 22M	200V	400V	2%, 5%	200, 400	5,000 (TD) / 4,000 (TCM)
2E (3225/1210)	3.2 x 2.5 x 0.6	0.5W	125	1 to 10M	-	-	2%, 5%	200, 400	5,000 (TD) / 4,000 (TCM)
W2H (5025/2010)	5.0 x 2.5 x 0.65	0.75W	125	1 to 22M	-	-	2%, 5%	200, 400	4,000 (TCM)
W3A (6432/2512)	6.3 x 3.1 x 0.7	1.0W	125	1 to 22M	200V	400V	2%, 5%	200, 400	4,000 (TCM)
W3A2 (6432/2512)	6.3 x 3.1 x 0.7	2.0W	95	1 to 22M	200V	400V	2%, 5%	200, 400	4,000 (TCM)

Performance

The RK73B resistors are designed for various environmental conditions, including overload, solder heat, temperature cycling, humidity load, and high-temperature storage. Derating curves are provided for operation at elevated terminal temperatures.

Usage Precautions

The ceramic substrate has a different thermal expansion coefficient than mounting boards, which can cause solder joint cracking under thermal stress. Larger sizes (W2H/W3A/W3A2) are more prone to this due to greater expansion and self-heating. Careful design consideration is needed for applications with significant temperature variations or load cycling.
RK73B1F resistors are susceptible to damage from static electricity during assembly.
When using at ambient temperatures of 70 or higher, rated power must be derated according to the power derating curve.
When operating above the rated terminal temperature, derating is also required.
For applications involving human safety or significant potential loss, contact KOA Global before use.

2403141437_KOA-RK73B2ETTD183J_C830162.pdf

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