Thick Film Chip Resistor KOA RK73B1ETTP241J Featuring Metal Glaze Film and Rectangular Black Appearance
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, excluding lead glass in electrodes, resistance film, and glass which are exempt from EU RoHS directives. AEC-Q200 data is available for most models.
Product Attributes
- Brand: RK73B
- Structure: Rectangular Chip Resistor
- Appearance Color: Black
- Material: Ceramic Substrate, Metal Glaze Thick Film
- Certifications: AEC-Q200 (excluding 1F)
- RoHS Compliance: EU RoHS Compliant (terminals lead-free)
Technical Specifications
| Model (Size Code) | Dimensions (mm) L x W x d x t | Weight (g/1000pcs) | Rated Power | Operating Temp. Range | Resistance Value Range () | Max. Operating Voltage | Max. Overload Voltage | TCR (10/K) | Packaging (pcs/reel) |
|---|---|---|---|---|---|---|---|---|---|
| 1F (0402/01005) | 0.40.02 x 0.20.02 x 0.110.03 x 0.130.02 | 0.04 | 0.03W | -55+125 | 19.1 (250, 250), 1091k (250), 100k10M (200) | 20V | 30V | 200, 250, 0+300 | 40,000 (TCM), 20,000 (TBL) |
| 1H (0603/0201) | 0.60.03 x 0.30.03 x 0.150.05 x 0.230.03 | 0.14 | 0.05W | -55+155 | 19.1 (400), 1010M (200) | 25V | 50V | 200, 400 | 15,000 (TCM) |
| 1E (1005/0402) | 1.00.1 x 0.50.05 x 0.250.05 x 0.350.05 | 0.68 | 0.1W | -55+155 | 110M (200) | 75V | 100V | 200 | 20,000 (TPL), 10,000 (TP) |
| 1J (1608/0603) | 1.60.2 x 0.80.1 x 0.30.1 x 0.450.1 | 2.14 | 0.1W / 0.125W | -55+155 | 1.1k10M (200), 11M22M (400), 11k (0.125W, 200) | - | - | 200, 400 | 10,000 (TP) |
| 2A (2012/0805) | 2.00.2 x 1.250.1 x 0.30.2 x 0.50.1 | 4.54 | 0.25W | -55+155 | 11M (200), 1.1M10M (400) | 150V | 200V | 200, 400 | 10,000 (TP), 5,000 (TD) |
| 2B (3216/1206) | 3.20.2 x 1.60.2 x 0.50.3 x 0.60.1 | 9.14 | 0.25W | -55+155 | 15.6M (200), 6.2M22M (400) | 200V | 400V | 200, 400 | 5,000 (TD) |
| 2E (3225/1210) | - x - x 0.50.3 x 0.40.2 | 15.5 | 0.5W | -55+155 | 15.6M (200), 6.2M10M (400) | - | - | 200, 400 | 5,000 (TD) |
| W2H (5025/2010) | 5.00.2 x 2.50.2 x 0.650.15 x - | 24.3 | 0.75W | -55+155 | 15.6M (200), 6.2M22M (400) | - | - | 200, 400 | 4,000 (TD) |
| W3A (6432/2512) | 6.30.2 x 3.10.2 x - x - | 37.1 | 1.0W | -55+155 | 15.6M (200), 6.2M22M (400) | 200V | 400V | 200, 400 | 4,000 (TD) |
| W3A2 (6432/2512) | 6.30.2 x 3.10.2 x 0.40.2 x - | - | 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) R(%) | - | 2.5x rated voltage for 5s (2x for 1E, 2B, W3A2) |
| Resistance to Soldering Heat | 0.5 (10R1M), 1 (R10, R1M) R(%) | - | 2605, 10s1s |
| Temperature Cycling | 1 (1F, Perf. "A"), 0.5 (others, standard) R(%) | 0.5 (1F, Perf. "A"), 0.3 (others, standard) R(%) | -55(30min.)/+125(30min.) 100 cycles (standard), 1000 cycles (Perf. "A") |
| Damp Heat Load | 2 (1J, 2A, 2B), 3 (others) R(%) | 0.75 (1J, 2A, 2B), 1 (others) R(%) | 402, 90%95%RH, 1000h (1.5h ON, 0.5h OFF cycle) |
| Durability | 2 (1J, 2A, 2B), 3 (others) R(%) | 0.75 (1J, 2A, 2B), 1 (others) R(%) | 702 or rated terminal temp. 2, 1000h (1.5h ON, 0.5h OFF cycle) |
| High Temperature Storage | 1 R(%) | 0.5 (1F), 0.3 (others) R(%) | +125, 1000h (1F); +155, 1000h (others) |
Power Derating Curve
The power derating curves illustrate the reduction in rated power based on ambient and terminal temperatures. Use the curves to determine the derated power when operating outside standard conditions.
Temperature Rise Data
Temperature rise data provides reference values for surface temperature increase under specific measurement conditions (Room Temp: 25, Substrate: FR-4 t=1.6mm, Cu foil: 35m).
Single Pulse Limiting Power Curve
These curves indicate the single-pulse limiting electric power based on pulse duration for different model series.
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