KOA RK73H Flat Chip Resistors (Precision Grade)
The KOA RK73H series are precision-grade flat chip resistors designed for high reliability in demanding applications. Featuring a small size, light weight, and excellent heat and weather resistance due to their metal glaze thick film construction, these resistors offer high stability with a triple-layer electrode structure. They are compatible with automatic mounters and suitable for both flow and reflow soldering. Terminations are lead-free, meeting EU-RoHS requirements. AEC-Q200 qualified (except for 1F models). Applications include automotive, medical, and aerospace equipment where failure could lead to significant loss.
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 (resistive film), Alumina (substrate)
- Certifications: EU-RoHS compliant (lead-free termination), AEC-Q200 qualified (Exemption 1F)
- Origin: Japan (implied by company name and language)
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 | 75V | 100V | TPL:20,000, TP:10,000 |
| 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 | TP:5,000 | ||
| 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 | 150V | 200V | TP:5,000, 4,000 |
| 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 | 200V | 400V | 5,000, 4,000 |
| 2E (1210) | 2.60.2 x 1.50.2 x 0.60.1 x 0.4+0.2-0.1 x 0.60.1 | 15.5 | 0.5W | 70 | 125 | 100 | 101M | 5,000, 4,000 | ||
| W2H (2010) | 5.00.2 x 2.50.2 x 0.650.15 x 0.50.15 x 0.750.15 | 24.3 | 0.75W | 70 | 125 | 100 | 101M | 4,000 | ||
| W3A (2512) | 6.30.2 x 3.10.2 x 0.80.15 x 0.60.15 x 0.80.15 | 37.1 | 1W | 70 | 125 | 100 | 101M | 200V (500V5) | 400V (500V5) | 4,000 |
| W3A2 (2512) | 6.30.2 x 3.10.2 x 0.80.15 x 0.60.15 x 0.80.15 | 37.1 | 2W | 95 | 100 | 101M | 200V | 400V | 4,000 |
Note: 4 RK73H1F (F:1%) and RK73H1H (1R9.1, 1MR10M) nominal resistance value is E24. 5 Please consult for Max. working voltage and Max. overload voltage in parentheses.
2410121533_KOA-RK73H2BTTD38R3F_C880211.pdf
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