RK73H Precision Thick Film Chip Resistor
The RK73H series are precision thick film chip resistors offering 0.5% and 1% tolerances. These resistors feature lead-free terminations meeting EU RoHS requirements, with the exception of Pb-glass contained in the electrode, resistor element, and glass. They are AEC-Q200 Qualified and suitable for various applications requiring reliable and accurate resistance values.
Product Attributes
- Brand: KOA Speer Electronics, Inc.
- Certifications: EU RoHS, AEC-Q200 Qualified
- Termination Material: Sn (Standard), SnPb, Au (Optional)
Technical Specifications
| Type (Inch Size Code) | L (mm) | W (mm) | t (mm) | d (mm) | c (mm) | Power Rating (W) | Max. Working Voltage (V) | Operating Temperature Range (C) | T.C.R. (x10-6/K) | Resistance Range |
| 1F (01005) | 0.4 (0.016) | 0.2 (0.008) | 0.1 (0.004) | 0.11 (0.004) | 0.13 (0.005) | 0.03 | 20 | -55 to +125 | 250 | 10 - 91k |
| 1H (0201) | 0.6 (0.024) | 0.3 (0.012) | 0.1 (0.004) | 0.1 (0.004) | 0.1 (0.004) | 0.05 | 25 | -55 to +125 | 200 | 10 - 1M |
| 1E (0402) | 1.0 (0.039) | 0.5 (0.02) | 0.15 (0.006) | 0.23 (0.009) | 0.2 (0.008) | 0.1 | 30 | -55 to +155 | 200 | 10 - 1M |
| 1J (0603) | 1.6 (0.063) | 0.8 (0.031) | 0.2 (0.008) | 0.3 (0.012) | 0.3 (0.012) | 0.125 | 50 | -55 to +155 | 200 | 10 - 1M |
| 2A (0805) | 2.0 (0.079) | 1.25 (0.049) | 0.25 (0.01) | 0.4 (0.016) | 0.4 (0.016) | 0.25 | 75 | -55 to +155 | 200 | 10 - 1M |
| 2B (1206) | 2.6 (0.102) | 1.6 (0.063) | 0.3 (0.012) | 0.5 (0.02) | 0.5 (0.02) | 0.25 | 100 | -55 to +155 | 200 | 10 - 1M |
| 2E (1210) | 3.2 (0.126) | 2.5 (0.098) | 0.4 (0.016) | 0.65 (0.026) | 0.65 (0.026) | 0.5 | 150 | -55 to +155 | 200 | 10 - 1M |
| 2H/W2H (2010) | 5.0 (0.197) | 2.5 (0.098) | 0.5 (0.02) | 0.65 (0.026) | 0.65 (0.026) | 0.75 | 200 | -55 to +155 | 200 | 10 - 1M |
| 3A/W3A (2512) | 6.3 (0.248) | 3.1 (0.122) | 0.5 (0.02) | 0.65 (0.026) | 0.65 (0.026) | 1.0 | 400 | -55 to +155 | 200 | 10 - 1M |
| W3A2 (2512) | 6.3 (0.248) | 3.1 (0.122) | 0.5 (0.02) | 0.65 (0.026) | 0.65 (0.026) | 2.0 | 400 | -55 to +155 | 200 | 10 - 1M |
Performance Characteristics
| Parameter | Requirement | Limit | Test Method |
| Resistance T.C.R. | 25C +25C/-55C and +25C/+125C | Within specified tolerance Within specified T.C.R. | |
| Overload (Short time) | Rated Voltage x 2.5 for 5 seconds (1E, 2B, W3A2: Rated Voltage x 2 for 5 seconds) | 2% 1%: 1F 0.5% | |
| Resistance to Soldering Heat | 260C 5C, 10 seconds 1 second | 1%: 1F ~ W3A2 (10R1M); 3%: 1H ~ W3A2 (R<10, R>1M) 0.5%: 1F ~ W3A2 (10 | |
| Rapid Change of Temperature | -55C (30 minutes), +125C (30 minutes), 100 cycles | 1%: 1F 0.5% Another 0.5%: 1F 0.3% Another | |
| Moisture Resistance | 40C 2C, 90%-95% RH, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle | 2%: 1J, 2A, 2B 3%: Another 0.75%: 1J, 2A, 2B; 1.5%:1F, 1%: Another | |
| Endurance at 70C | 70C 2C, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle | 2%: 1J, 2A, 2B 3%: Another 0.75%: 1J, 2A, 2B 1% Another | |
| High Temperature Exposure | +125C, 1000 hours: 1F; +155C, 1000 hours: 1E, 1H, 1J, 2A, 2B, 2E, 2H/W2H, 3A/W3A/W3A2 | 1% 0.5%: 1F 0.3% Another |
Derating Curves
For resistors operated at an ambient temperature of 70C or above, a power rating shall be derated in accordance with the ambient temperature derating curve. For resistors operated at a terminal part temperature of described for each size or above, a power rating shall be derated in accordance with the terminal part temperature derating curve.
2410121530_KOA-RK73H1HTTC1211F_C830280.pdf
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