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 superior heat and weather resistance, these resistors are compatible with reflow and wave soldering processes. 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 (excluding 1F).
Product Attributes
- Brand: KOA
- Product Type: Thick Film Chip Resistors
- Structure: Rectangular Chip Resistor
- Appearance Color: Black
- Material: Ceramic substrate, Metal glaze thick film
- Certifications: AEC-Q200 (excluding 1F), EU RoHS compliant
Technical Specifications
| Model (Size Code) | Dimensions (mm) L x W x d x t | Weight (g/1000pcs) | Rated Power (at 70C) | Rated Voltage (Max) | Resistance Value Range () | Tolerance | Temp. Coefficient (x10/K) | Operating Temp. Range | Packaging (pcs/reel) |
|---|---|---|---|---|---|---|---|---|---|
| 1F (0402/01005) | 0.4x0.2x0.11x0.13 | 0.04 | 0.03W | 20V | 1~9.1 (250), 10~91k (250), 100k~1M (200), 100k~10M (250) | G:2%, J:5% | 200, 250, 0~+300 | -55+125 | 40,000 (TCM) |
| 1H (0603/0201) | 0.6x0.3x0.15x0.23 | 0.14 | 0.05W | 25V | 1~9.1 (400), 10~10M (200) | G:2%, J:5% | 200, 400 | -55+155 | 15,000 (TBL/TCM) |
| 1E (1005/0402) | 1.0x0.5x0.25x0.35 | 0.68 | 0.1W | 75V | 1~10M (200), 1~10M (400) | G:2%, J:5% | 200, 400 | -55+155 | TPL: 20,000, TP: 10,000 |
| 1J (1608/0603) | 1.6x0.8x0.3x0.45 | 2.14 | 0.1W / 0.125W | - | 1.1k~10M (200), 1.1k~22M (400), 1~1k (0.125W) (200) | G:2%, J:5% | 200, 400 | -55+155 | TP: 10,000 |
| 2A (2012/0805) | 2.0x1.25x0.3x0.5 | 4.54 | 0.25W | 150V | 1~1M (200), 1.1M~10M (400) | G:2%, J:5% | 200, 400 | -55+155 | TP: 10,000, TD: 5,000 |
| 2B (3216/1206) | 3.2x1.6x0.4x0.6 | 9.14 | 0.25W | 200V | 1~5.6M (200), 6.2M~22M (400) | G:2%, J:5% | 200, 400 | -55+155 | TP: 10,000, TD: 5,000 |
| 2E (3225/1210) | 3.2x2.5x0.4x0.6 | 15.5 | 0.5W | - | 10~5.6M (200), 6.2M~10M (400) | G:2%, J:5% | 200, 400 | -55+155 | TP: 10,000, TD: 5,000 |
| W2H (5025/2010) | 5.0x2.5x0.65x- | 24.3 | 0.75W | - | 10~5.6M (200), 6.2M~22M (400) | G:2%, J:5% | 200, 400 | -55+155 | TD: 4,000 |
| W3A (6432/2512) | 6.3x3.1x-x- | 37.1 | 1.0W | 200V | 10~5.6M (200), 6.2M~22M (400) | G:2%, J:5% | 200, 400 | -55+155 | TD: 4,000 |
| W3A2 (6432/2512) | 6.3x3.1x-x- | 37.1 | 2.0W | 200V | 10~5.6M (200), 6.2M~22M (400) | G:2%, J:5% | 200, 400 | -55+95 | TD: 4,000 |
Performance
| Test Item | Test Method | Guaranteed Value | Representative Value |
|---|---|---|---|
| Resistance Value | Within the specified tolerance | (1% + 0.1) at 25 | |
| Temperature Coefficient of Resistance | Within the specified value | 25/-55, 25/+125 | |
| Overload (Short time) | Apply 2.5 times rated voltage for 5 seconds (2 times for 1E, 2B, W3A2) | 1: 1F 0.5: others | |
| Soldering Heat Resistance | 2605, 10s1s | 1: 1FW3A2 (10R1M) 3: 1FW3A2 (R10, R1M) | 0.5: 1FW3A2 (10R1M) 1: 1FW3A2 (R10, R1M) |
| Temperature Cycling | 100 cycles (-55 (30min.)/+125 (30min.)) | 1: 1F, Performance "A" (Heat Shock Resistance) 0.5: others | 0.5: 1F, Performance "A" (Heat Shock Resistance) 0.3: others |
| Humid Load | 402, 90%95%RH, 1000h (1.5h ON, 0.5h OFF cycle) | 2: 1J, 2A, 2B 3: others | 0.75: 1J, 2A, 2B 1.5: 1F 1: others |
| Endurance | 702 or rated terminal temp. 2, 1000h (1.5h ON, 0.5h OFF cycle) | 2: 1J, 2A, 2B 3: others | 0.75: 1J, 2A, 2B 1: others |
| High Temperature Storage | +125, 1000h: 1F +155, 1000h: others | 1 | 0.5: 1F 0.3: others |
Power Derating Curves
Power derating is required when operating above rated ambient temperature or exceeding rated terminal temperatures. Refer to the provided curves for specific derating ratios based on terminal temperature and model series.
Temperature Rise Data
Temperature rise data under specific measurement conditions (25 ambient, FR-4 substrate, 35m Cu foil) is provided for reference.
Single Pulse Limiting Power Curve
Curves show the single-pulse limiting electric power based on pulse duration for different model groups. The upper limit for applied voltage is the maximum overload voltage. Continuous pulse tolerance requires consultation.
2403141437_KOA-RK73B1JTTD473J_C131712.pdf
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