KOA RK73H Flat Chip Resistors (Precision Grade)
The KOA RK73H series offers high-reliability flat chip resistors designed for precision applications. These resistors feature a metal glaze thick film for excellent heat and weather resistance, and a triple-layer electrode structure for enhanced stability. They are suitable for automated mounting and soldering processes, and comply with EU-RoHS requirements for lead-free terminations. Applications include automotive, medical, and aerospace equipment where high performance and safety are critical.
Product Attributes
- Brand: KOA
- Product Type: Flat Chip Resistors (Precision Grade)
- Coating Color: Black (1F, 1H), Blue (1E, 1J, 2A, 2B, 2E, W2H, W3A, W3A2)
- Material: Metal glaze thick film, Alumina substrate
- Certifications: EU-RoHS compliant (lead-free termination), AEC-Q200 qualified (Exemption 1F)
- Soldering: Suitable for flow and reflow soldering
- Termination: Lead-free
Technical Specifications
| Type (Inch Size Code) | Dimensions (mm) L x W x c x d x t | Weight (g/1000pcs) | Power Rating | Rated Ambient Temp. | Rated Terminal Part Temp. | T.C.R. (10-6/K) | Resistance Range () | Max. Working Voltage | Max. Overload Voltage | Packaging & Q'ty/Reel (pcs) | ||
| 1F (01005) | 0.40.02 x 0.20.02 x 0.100.03 x 0.110.03 x 0.130.02 | 0.04 | 0.03W | 70 | 200 | 100k1M4 | 20V | 30V | 40,000 | |||
| 1H (0201) | 0.60.03 x 0.30.03 x 0.10.05 x 0.150.05 x 0.230.03 | 0.14 | 0.05W | 70 | 200 | 101M, 1010M4 | 25V | 50V | 35,000 | |||
| 1E (0402) | 1.0+0.1-0.05 x 0.50.05 x 0.20.1 x 0.25+0.05-0.1 x 0.350.05 | 0.68 | 0.1W | 70 | 125 | 100 | 101M, 101M | 75V | 100V | |||
| 1J (0603) | 1.60.2 x 0.80.1 x 0.30.1 x 0.30.1 x 0.450.1 | 2.14 | 0.1W | 70 | 125 | 100 | 1.02k1M, 1.02k1M | TP 10,000 | ||||
| 2A (0805) | 2.00.2 x 1.250.1 x 0.40.2 x 0.3+0.2-0.1 x 0.50.1 | 4.54 | 0.25W | 70 | 125 | 100 | 101M, 101M | 150V | 200V | TP 10,000 | ||
| 2B (1206) | 3.20.2 x 1.60.2 x 0.50.3 x 0.4+0.2-0.1 x 0.60.1 | 9.14 | 0.25W | 70 | 125 | 100 | 101M, 101M | 200V | 400V | 5,000 | ||
| 2E (1210) | 2.60.2 x 15.5 (Note: Dimensions for 2E and subsequent sizes are incomplete in source) | W2H (2010) 1 | 5.00.2 x 2.50.2 x 0.650.15 | 24.3 | 0.75W | 70 | 125 | 100 | 101M, 101M | 4,000 | ||
| W3A (2512) 1 | 6.30.2 x 3.10.2 | 37.1 | 1W | 70 | 125 | 100 | 101M, 101M | 200V (500V5) | 400V (500V5) | 4,000 | ||
| W3A2 (2512) 1 | (See W3A) | (See W3A) | 2W | 95 | 100 | 101M, 101M | 200V | 400V | 4,000 |
Note: Dimensions for 2E, W2H, W3A, and W3A2 are incomplete in the provided text. RK73H 2H, 3A and 3A2 are also available with different "d" dimensions (0.4 +0.2 0.1 mm).
2410121533_KOA-RK73H2BTTD1781F_C880176.pdf
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