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Specifications
Power(Watts):
1.5W
Resistance:
18kΩ
Voltage Rating:
200V
Temperature Coefficient:
±100ppm/℃
Operating Temperature:
-55℃~+155℃
Type:
Thick Film Resistor
Tolerance:
±5%
Mfr. Part #:
WK73R3ATTE183J
Package:
2512
Key Attributes
Model Number:
WK73R3ATTE183J
Product Description
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 are RoHS compliant. They are qualified to AEC-Q200 standards, making them ideal for demanding applications.
Product Attributes
- Brand: KOA
- Product Type: Flat Chip Resistors (Wide Terminal Type)
- Coating Color: Black
- Certifications: EU-RoHS, AEC-Q200 qualified
- Material: Thick Film, Ceramic substrate, Ni plating, Sn plating
Technical Specifications
| Type | Power Rating | Resistance Range () | Resistance Tolerance | T.C.R. (10-6/K) | Max. Working Voltage | Max. Overload Voltage | Taping & Q'ty/Reel (pcs) |
| WK73R1E | 0.33W*1 | 101M | D: 0.5% F: 1% | 100 | 75V | 100V | TP: 10,000 |
| WK73R1J | 0.5W*1 | 101M | D: 0.5% F: 1% | 100 | 150V | 200V | TD: 5,000 |
| WK73R2A | 0.75W*1 | 20.5k1M | D: 0.5% F: 1% | 100 | 200V | 400V | TE: 5,000 |
| WK73R2A | 1W*1 | 1020k | D: 0.5% F: 1% | 100 | 200V | 400V | TE: 5,000 |
| WK73R2B | 0.75W | 101M | D: 0.5% F: 1% | 100 | - | - | TP: 5,000 |
| WK73R2B | 1W*1 | 109.76k | D: 0.5% F: 1% | 100 | - | - | TP: 5,000 |
| WK73R2H | 1W | 10430k | D: 0.5% F: 1% | 100 | - | - | TD: 4,000 |
| WK73R2H | 1W | 432k1M | 200 | 100 | - | - | TD: 4,000 |
| WK73R2J | 1W | 10510k | D: 0.5% F: 1% | 100 | - | - | TE: 4,000 |
| WK73R2J | 1W | 511k1M | 200 | 100 | - | - | TE: 4,000 |
| WK73R3A | 1.5W | 10330k | D: 0.5% F: 1% | 100 | - | - | TP: 4,000 |
| WK73R3A | 1.5W | 332k1M | 200 | 100 | - | - | TP: 4,000 |
| WK73R3A | 2W*1 | 10330k | D: 0.5% F: 1% | 100 | - | - | TP: 4,000 |
| WK73R3A | 2W*1 | 332k1M | 200 | 100 | - | - | TP: 4,000 |
Applications
- Power supply, ECU, and automotive-related equipment.
Performance
| Test Items | Performance Requirements | Limit | Typical | Test Methods |
| Resistance | Within specified tolerance | - | - | At 25 |
| T.C.R. | Within specified T.C.R. | - | - | +25/55 and +25/125 |
| Overload (Short time) | R(2%+0.2) for WK73R1E, WK73R2A(0.75W, 1W), WK73R2B(1W), WK73R3A(2W) R(1%+0.2) for others | 2 | 0.2 | Rated voltage2.5 for 5s (for above types) Rated voltage2.0 for 5s (for others) |
| Resistance to soldering heat | R1% | 1 | 0.2 | 2605, 10s1s |
| Terminal strength (Bending test) | R0.1% | 1 | 0.1 | Holding point 90mm, Bending 1 time. Bending 5mm |
| Rapid change of temperature | R0.5% | 0.5 | 0.3 | -55 (30min.) /+125 (30min.) 100 cycles |
| Moisture resistance | R3% (for 1E) R2% (for others) | 3:1E 2:others | 1:1E 0.2:others | 402, 90%95%RH, 1000h (1.5h ON/0.5h OFF cycle) |
| Endurance at 70 | R3% (for 1E) R2% (for others) | 3:1E 2:others | 1:1E 0.2:others | 702, 1000h (1.5h ON/0.5h OFF cycle) |
| High temperature exposure | R1% | 1 | 0.2 | +155, 1000h |
2410121658_KOA-WK73R3ATTE183J_C515006.pdf
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