Product Overview
The WK73R series are wide terminal type flat chip resistors featuring high reliability and performance. They are suitable for both reflow and flow solderings and meet EU-RoHS requirements. These resistors are designed for applications such as power supply circuits and ECUs, particularly in automotive and industrial equipment.
Product Attributes
- Brand: KOA
- Product Type: Flat Chip Resistors (Wide Terminal Type)
- Coating Color: Black
- Certifications: EU-RoHS compliant, AEC-Q200 qualified
- Materials: Thick Film, Ceramic substrate, Ni plating, Sn plating (lead-free terminals)
Technical Specifications
| Type | Power Rating | Resistance Range () | Resistance Tolerance | T.C.R. (106/K) | Max. Working Voltage | Max. Overload Voltage | Taping & Q'ty/Reel (pcs) | Rated Ambient Temp. | Rated Terminal Part Temp. |
| WK73R1E | 0.33W*1 | 101M | D:0.5%, F:1%, J:5% | 100 | 75V | 100V | TP: 10,000 | - | 125 |
| WK73R1J | 0.5W*1 | 101M | D:0.5%, F:1%, J:5% | 100 | 150V | 200V | TD: 5,000 | - | 125 |
| WK73R2A | 0.75W*1 | 20.5k1M (D:0.5%), 22k1M (F:1%) | D:0.5%, F:1%, J:5% | 100 | 200V | 400V | TD: 5,000 | - | 125 |
| WK73R2A | 1W*1 | 1020k | D:0.5%, F:1%, J:5% | 100 | - | - | TD: 5,000 | - | 125 |
| WK73R2B | 0.75W | 101M | D:0.5%, F:1%, J:5% | 100 | - | - | TE: 5,000 | 70 | 125 |
| WK73R2B | 1W*1 | 109.76k (D:0.5%), 109.1k (F:1%) | D:0.5%, F:1%, J:5% | 100 | - | - | TE: 5,000 | - | 115 |
| WK73R2H | 1W | 10430k | D:0.5%, F:1%, J:5% | 100 | - | - | BK: 4,000 | 70 | 125 |
| WK73R2H | - | 432k1M (200) | 200 | 200 | - | - | BK: 4,000 | 70 | 125 |
| WK73R2J | 1W | 10510k | D:0.5%, F:1%, J:5% | 100 | - | - | BK: 4,000 | 70 | 100 |
| WK73R2J | - | 511k1M (200) | 200 | 200 | - | - | BK: 4,000 | 70 | 100 |
| WK73R3A | 1.5W | 10330k | D:0.5%, F:1%, J:5% | 100 | - | - | BK: 4,000 | 70 | 125 |
| WK73R3A | - | 332k1M (200) | 200 | 200 | - | - | BK: 4,000 | 70 | 125 |
| WK73R3A | 2W*1 | 10330k | D:0.5%, F:1%, J:5% | 100 | - | - | BK: 4,000 | - | 115 |
| WK73R3A | - | 332k1M (200) | 200 | 200 | - | - | BK: 4,000 | - | 115 |
2409300002_KOA-WK73R3ATTE180J_C340339.pdf
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