Thick film chip resistors KOA RK73B1HTTC274J offering robust performance and compatibility with reflow soldering processes
THICK FILM CHIP RESISTORS RK73B
The RK73B series of thick film chip resistors offers a robust product lineup from 0402 to 6432 sizes. Featuring a metal glaze thick film protective layer, these resistors provide excellent heat and weather resistance. They are compatible with reflow and wave soldering processes. Terminal products are lead-free and comply with EU RoHS directives, with lead glass in electrodes, resistive film, and glass exempt from RoHS. AEC-Q200 data is available for most models (excluding 1F). These resistors are suitable for applications requiring high reliability, including automotive, medical, and aviation equipment.
Product Attributes
- Brand: RK73B
- Appearance Color: Black
- Material: Metal glaze thick film (protective layer), Ceramic substrate
- Certifications: EU RoHS compliant (terminals lead-free), AEC-Q200 (excluding 1F)
- Reference Standards: IEC 60115-8, JIS C 5201-8, EIAJ RC-2134C
Technical Specifications
| Model (Size Code) | Dimensions (mm) L x W x t | Weight (g/1000pcs) | Rated Power (at 70C) | Operating Temp. Range | Resistance Value Range () | Max. Operating Voltage | Max. Overload Voltage | TCR (10/K) | Packaging (pcs/reel) |
|---|---|---|---|---|---|---|---|---|---|
| 1F (0402/01005) | 0.4x0.2x0.13 | 0.04 | 0.03W | -55+125 | 19.1 (250), 1091k (250), 100k1M (200), 100k10M (250) | 20V | 30V | 200, 250, 0+300 | 40,000 (TCM) |
| 1H (0603/0201) | 0.6x0.3x0.23 | 0.14 | 0.05W | -55+155 | 19.1 (400), 1010M (200) | 25V | 50V | 200, 400 | 15,000 (TBL/TCM) |
| 1E (1005/0402) | 1.0x0.5x0.35 | 0.68 | 0.1W | -55+155 | 110M (200), 110M (400) | 75V | 100V | 200, 400 | 20,000 (TPL), 10,000 (TP) |
| 1J (1608/0603) | 1.6x0.8x0.45 | 2.14 | 0.1W | -55+155 | 1.1k10M (200), 11M22M (400) | - | - | 200, 400 | 10,000 (TP) |
| 1J AT (1608/0603) | 1.6x0.8x0.45 | 2.14 | 0.125W | -55+155 | 11k (200) | - | - | 200 | 10,000 (TP) |
| 2A (2012/0805) | 2.0x1.25x0.5 | 4.54 | 0.25W | -55+155 | 11M (200), 1.1M10M (400) | 150V | 200V | 200, 400 | 10,000 (TP) |
| 2B (3216/1206) | 3.2x1.6x0.6 | 9.14 | 0.25W | -55+155 | 15.6M (200), 6.2M22M (400) | 200V | 400V | 200, 400 | 5,000 (TPL/TP) |
| 2E (3225/1210) | 3.2x2.5x0.6 | 15.5 | 0.5W | -55+155 | 15.6M (200), 6.2M10M (400) | - | - | 200, 400 | 5,000 (TPL/TP) |
| W2H (5025/2010) | 5.0x2.5x0.65 | 24.3 | 0.75W | -55+155 | 15.6M (200), 6.2M22M (400) | - | - | 200, 400 | 4,000 (TD) |
| W3A (6432/2512) | 6.3x3.1x0.65 | 37.1 | 1.0W | -55+155 | 15.6M (200), 6.2M22M (400) | 200V | 400V | 200, 400 | 4,000 (TD) |
| W3A2 (6432/2512) | 6.3x3.1x0.65 | 37.1 | 2.0W | -55+95 | 15.6M (200), 6.2M22M (400) | 200V | 400V | 200, 400 | 4,000 (TD) |
Performance
| Test Item | Guaranteed Value | Representative 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 (R1M) | - | 2605, 10s1s |
| Temperature Cycling | 1 (1F, Performance "A"), 0.5 (others) | 0.5 (1F, Performance "A"), 0.3 (others) | -55(30min.)/+125(30min.), 100 cycles (standard), 1000 cycles (Performance "A") |
| Damp Heat Load | 2 (1J, 2A, 2B), 3 (others) | 0.75 (1J, 2A, 2B), 1.5 (1F), 1 (others) | 402, 90%95%RH, 1000h (1.5h ON, 0.5h OFF cycle) |
| Durability | 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 Storage | 1 | 0.5 (1F), 0.3 (others) | +125, 1000h (1F); +155, 1000h (others) |
Power Derating Curves
Refer to the provided graphs for power derating based on terminal temperature and ambient temperature.
Temperature Rise Data
Refer to the provided graphs for temperature rise data under various conditions.
Single Pulse Limiting Power Curve
Refer to the provided graphs for single pulse limiting electric power.
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