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 for excellent heat and weather resistance, these resistors are suitable for reflow and wave soldering. They are RoHS compliant with lead-free terminals, and lead glass in electrodes, resistive film, and glass are exempt from EU RoHS directives. AEC-Q200 data is available for most models.
Product Attributes
- Brand: RK73B
- Structure: Rectangular Chip Resistors
- Appearance Color: Black
- Material: Metal Glaze Thick Film (Resistive Film), Ceramic Substrate
- Certifications: AEC-Q200 (excluding 1F), EU RoHS compliant terminals
- 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)
Technical Specifications
| Model (Size Code) | Dimensions (mm) L x W x t | Weight (g/1000pcs) | Rated Power (at 70C) | Rated Voltage | Resistance Range () | Resistance Tolerance | Temp. Coefficient (x10^-6/K) | Operating Temp. Range | Packaging (pcs/reel) |
|---|---|---|---|---|---|---|---|---|---|
| 1F (0402/01005) | 0.4 x 0.2 x 0.13 | 0.04 | 0.03W | 20V | 1~9.1 (250), 10~91k (250), 100k~10M (200) | G:2%, J:5% | 250, 200 | -55+125 | 40,000 (TCM) |
| 1H (0603/0201) | 0.6 x 0.3 x 0.23 | 0.14 | 0.05W | 25V | 1~9.1 (400), 10~10M (200) | G:2%, J:5% | 400, 200 | -55+155 | 15,000 (TBL/TCM) |
| 1E (1005/0402) | 1.0 x 0.5 x 0.35 | 0.68 | 0.1W | 75V | 1~10M (200) | G:2%, J:5% | 200 | -55+155 | 10,000 (TP) |
| 1J (1608/0603) | 1.6 x 0.8 x 0.45 | 2.14 | 0.1W | - | 1.1k~10M (200), 11M~22M (400) | G:2%, J:5% | 200, 400 | -55+155 | 10,000 (TP) |
| 1J (0.125W) | 1.6 x 0.8 x 0.45 | 2.14 | 0.125W | - | 1~1k (200) | G:2%, J:5% | 200 | -55+155 | 10,000 (TP) |
| 2A (2012/0805) | 2.0 x 1.25 x 0.5 | 4.54 | 0.25W | 150V | 1~1M (200), 1.1M~10M (400) | G:2%, J:5% | 200, 400 | -55+155 | 10,000 (TP) |
| 2B (3216/1206) | 3.2 x 1.6 x 0.6 | 9.14 | 0.25W | 200V | 1~5.6M (200), 6.2M~22M (400) | G:2%, J:5% | 200, 400 | -55+155 | 5,000 (TP) |
| 2E (3225/1210) | 3.2 x 2.5 x 0.6 | 15.5 | 0.5W | - | 1~5.6M (200), 6.2M~10M (400) | G:2%, J:5% | 200, 400 | -55+155 | 5,000 (TP) |
| W2H (5025/2010) | 5.0 x 2.5 x 0.65 | 24.3 | 0.75W | - | 1~5.6M (200), 6.2M~22M (400) | G:2%, J:5% | 200, 400 | -55+155 | 4,000 (TD) |
| W3A (6432/2512) | 6.3 x 3.1 x 0.7 | 37.1 | 1.0W | 200V | 1~5.6M (200), 6.2M~22M (400) | G:2%, J:5% | 200, 400 | -55+155 | 4,000 (TD) |
| W3A2 (6432/2512) | 6.3 x 3.1 x 0.7 | 37.1 | 2.0W | 200V | 1~5.6M (200), 6.2M~22M (400) | G:2%, J:5% | 200, 400 | -55+95 | 4,000 (TD) |
Performance
| Test Item | Guarantee Value | Test Method |
|---|---|---|
| Resistance Value | Within allowable tolerance | 25 |
| Temperature Coefficient of Resistance | Within specified value | +25/55, 25/125 |
| Overload (Short time) | 1:1F, 0.5:others | Apply 2.5 times rated voltage for 5 seconds (1E, 2B, W3A2: 2 times rated voltage) |
| Resistance to Soldering Heat | 1:1FW3A2 (10R1M), 3:others | 2605, 10s1s |
| Temperature Cycling | 1:1F, Performance "A" (Heat Shock Resistance) 0.5:others | -55 (30min.)/+125 (30min.), 100 cycles (Performance "A": 1000 cycles) |
| Damp Heat Load | 2:1J, 2A, 2B, 3:others | 402, 90%95%RH, 1000h (1.5h ON, 0.5h OFF cycle) |
| Endurance | 2:1J, 2A, 2B, 3:others | 702 or rated terminal temp. 2, 1000h (1.5h ON, 0.5h OFF cycle) |
| High Temperature Storage | 1:1F, 0.5:others | +125, 1000h (1F); +155, 1000h (others) |
Power Derating Curve
Power derating is required when operating above the rated ambient temperature or exceeding the rated terminal temperature. Refer to the derating curves for specific models.
Single Pulse Limiting Power Curve
Provides limiting electric power for single pulse durations. Continuous pulse endurance requires consultation.
Temperature Rise Data
Reference data for temperature rise under specific measurement conditions (Room temp: 25, Substrate: FR-4 t=1.6mm, Cu foil: 35m).
2403141437_KOA-RK73B2ETTD273J_C830177.pdf
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