Metal glaze thick film chip resistor KOA RK73B1JTTD750J with ceramic substrate and EU RoHS compliance
THICK FILM CHIP RESISTORS RK73B
The RK73B series are thick film chip resistors featuring a robust product lineup from 0402 to 6432 sizes. Constructed with a metal glaze thick film protective coating, these resistors offer excellent heat and weather resistance. They are compatible with reflow and wave soldering processes. Terminal-free lead products comply with EU RoHS directives, with lead glass in electrodes, resistance film layers, and glass being exempt. AEC-Q200 data is available for most models (excluding 1F). These resistors are suitable for various applications including automotive, medical, and aerospace equipment where safety and significant loss prevention are critical.
Product Attributes
- Brand: KOA
- Structure: Rectangular chip resistor
- Appearance Color: Black
- Material: Metal glaze thick film (protective coating), Ceramic substrate
- Certifications: EU RoHS compliant, AEC-Q200 (excluding 1F)
- Reference Standards: IEC 60115-8, JIS C 5201-8, EIAJ RC-2134C
- Terminal Surface Material: T:Sn, G:Au (for 1E, 1J, 2A), L:Sn/Pb (for 1F, 1H, W2H, W3A, W3A2)
- Secondary Processing: TX, TBL, TCM, TPL, TP, TD, TE, BK (Bulk)
- Packaging: TD (4mm pitch paper tape) as standard for secondary processing. TCM (15,000pcs/reel) recommended over TC (10,000pcs/reel).
Technical Specifications
| Model (Size Code) | Dimensions (mm) L x W x t | Rated Power | Operating Temp. Range | Resistance Range | Tolerance | Max. Working Voltage | Max. Overload Voltage | Weight (g/1000pcs) |
| 1F (0402/01005) | 0.4 x 0.2 x 0.13 | 0.03W | -55+125 | 19.1 (250), 1091k (250), 100k10M (200) | G:2%, J:5% | 20V | 30V | 0.04 |
| 1H (0603/0201) | 0.6 x 0.3 x 0.23 | 0.05W | -55+155 | 19.1 (400), 1010M (200) | G:2%, J:5% | 25V | 50V | 0.14 |
| 1E (1005/0402) | 1.0 x 0.5 x 0.35 | 0.1W | -55+155 | 110M (200) | G:2%, J:5% | 75V | 100V | 0.68 |
| 1J (1608/0603) | 1.6 x 0.8 x 0.45 | 0.1W / 0.125W | -55+155 | 1.1k10M (200), 11M22M (400), 11k (0.125W, 200) | G:2%, J:5% | - | - | 2.14 |
| 2A (2012/0805) | 2.0 x 1.25 x 0.5 | 0.25W | -55+155 | 11M (200), 1.1M10M (400) | G:2%, J:5% | 150V | 200V | 4.54 |
| 2B (3216/1206) | 3.2 x 1.6 x 0.6 | 0.25W | -55+155 | 15.6M (200), 6.2M22M (400) | G:2%, J:5% | 200V | 400V | 9.14 |
| 2E (3225/1210) | 3.2 x 2.5 x 0.4 | 0.5W | -55+155 | 15.6M (200), 6.2M10M (400) | G:2%, J:5% | - | - | - |
| W2H (5025/2010) | 5.0 x 2.5 x 0.65 | 0.75W | -55+155 | 15.6M (200), 6.2M22M (400) | G:2%, J:5% | - | - | 24.3 |
| W3A (6432/2512) | 6.3 x 3.1 x 0.4 | 1.0W | -55+155 | 15.6M (200), 6.2M22M (400) | G:2%, J:5% | 200V | 400V | 37.1 |
| W3A2 (6432/2512) | 6.3 x 3.1 x 0.4 | 2.0W | -55+95 | 15.6M (200), 6.2M22M (400) | G:2%, J:5% | 200V | 400V | 37.1 |
Performance
| Test Item | Guaranteed Value | Typical Value | Test Method |
| Resistance Value | Within specified tolerance | - | 25 |
| Temperature Coefficient of Resistance | Within specified value | - | +25/-55, +25/+125 |
| Overload (Short time) | 1 (1F), 0.5 (others) | - | 2.5x rated voltage for 5s (2x for 1E, 2B, W3A2) |
| Resistance to Soldering Heat | 0.5 (10R1M), 1 (R10, R1M) | - | 2605, 10s1s |
| Temperature Cycling | 1 (1F), 0.5 (others) | 0.5 (1F), 0.3 (others) | -55(30min.)/+125(30min.), 100 cycles (Standard), 1000 cycles (HS) |
| Damp Heat Load | 2 (1J, 2A, 2B), 3 (others) | 0.75 (1J, 2A, 2B), 1 (others), 1.5 (1F) | 402, 90%95%RH, 1000h (1.5h ON, 0.5h OFF cycle) |
| Endurance | 2 (1J, 2A, 2B), 3 (others) | 0.75 (1J, 2A, 2B), 1 (others) | 702 or rated terminal temp. 2, 1000h (1.5h ON, 0.5h OFF cycle) |
| High Temperature Exposure | 1 | 0.5 (1F), 0.3 (others) | +125, 1000h (1F); +155, 1000h (others) |
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