Product Overview
The WK73R series are wide terminal type flat chip resistors featuring high reliability and performance. They offer a resistance tolerance of 0.5% and a temperature coefficient of 10010-6/K. These resistors are suitable for both reflow and flow solderings and comply with EU-RoHS requirements. They are AEC-Q200 qualified and designed for applications such as power supply circuits and ECUs, particularly in automotive environments.
Product Attributes
- Brand: KOA
- Product Type: Flat Chip Resistors (Wide Terminal Type)
- Coating Color: Black
- Certifications: EU-RoHS compliant (excluding Pb-glass in electrode, resistor element, and glass), AEC-Q200 qualified
- Reference Standards: IEC 60115-8, JIS C 5201-8, EIAJ RC-2134C
Technical Specifications
| Type | Size (Inch) | Dimensions (mm) L x W x t | Power Rating | Rated Ambient Temp. | Rated Terminal Part Temp. | T.C.R. (10-6/K) | Resistance Range () | Max. Working Voltage | Max. Overload Voltage | Taping & Q'ty/Reel (pcs) |
| WK73R1E | 0204 | 1.0 x 0.5 x 0.35 | 0.33W*1 | - | 125 | 100 | 101M | 75V | 100V | TP: 10,000 |
| WK73R1J | 0306 | 1.6 x 0.8 x 0.45 | 0.5W*1 | - | 125 | 100 | 101M | 150V | 200V | TD: 5,000 |
| WK73R2A | 0508 | 2.0 x 1.25 x 0.55 | 0.75W*1 | - | 125 | 100 | 20.5k1M | 200V | 400V | TD: 5,000 |
| WK73R2A | 0508 | 2.0 x 1.25 x 0.55 | 1W*1 | - | 125 | 100 | 1020k | 200V | 400V | TD: 5,000 |
| WK73R2B | 0612 | 3.2 x 1.6 x 0.6 | 0.75W | 70 | 125 | 100 | 101M | - | - | TP: 5,000 |
| WK73R2B | 0612 | 3.2 x 1.6 x 0.6 | 1W*1 | - | 115 | 100 | 109.76k | - | - | TP: 5,000 |
| WK73R2H | 1020 | 5.0 x 2.5 x 0.75 | 1W | 70 | 125 | 100 | 10430k | - | - | TE: 4,000 |
| WK73R2H | 1020 | 5.0 x 2.5 x 0.75 | 1W | 70 | 125 | 200 | 432k1M | - | - | TE: 4,000 |
| WK73R2J | 1218 | 4.6 x 3.1 x 0.4 | 1W | 70 | 100 | 100 | 10510k | - | - | TE: 4,000 |
| WK73R2J | 1218 | 4.6 x 3.1 x 0.4 | 1W | 70 | 100 | 200 | 511k1M | - | - | TE: 4,000 |
| WK73R3A | 1225 | 6.3 x 3.1 x 0.45 | 1.5W | 70 | 125 | 100 | 10330k | - | - | TE: 4,000 |
| WK73R3A | 1225 | 6.3 x 3.1 x 0.45 | 1.5W | 70 | 125 | 200 | 332k1M | - | - | TE: 4,000 |
| WK73R3A | 1225 | 6.3 x 3.1 x 0.45 | 2W*1 | - | 115 | 100 | 10330k | - | - | TE: 4,000 |
| WK73R3A | 1225 | 6.3 x 3.1 x 0.45 | 2W*1 | - | 115 | 200 | 332k1M | - | - | TE: 4,000 |
Note: Rated voltage is the lower of (Power RatingResistance value) or Max. working voltage. Refer to derating curves for usage at rated power of *1. Priority should be given to Rated Terminal Part Temperature over Rated Ambient Temperature if unsure.
2410121658_KOA-WK73R2BTTD1301F_C515002.pdf
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